DNSSEC Analyzer - columbia.edu

Domain Name:

Time: 2023-03-23 19:52:50 UTC, NTP stratum 4

Analyzing DNSSEC problems for columbia.edu

DS=20326/SHA-256 is now in the chain-of-trust

	Checking DS between Trust Anchor and .
	`. IN DS ( 20326 8 2 e06d44b80b8f1d39a95c0b0d7c65d08458e880409bbc683457104237c7f8ec8d )`
	Query to d.root-servers.net for ./DNSKEY
	Received 1139 bytes from 199.7.91.13
	;; Response received from 199.7.91.13 (1139 octets) ;; HEADER SECTION ;; id = 20736 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 4 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1450 ;; option: ;; QUESTION SECTION (1 record) ;; . IN DNSKEY ;; ANSWER SECTION (4 records) . 172800 IN DNSKEY ( 256 3 8 AwEAAbF1LAxEQPtClEQno48k6u7JjCOfVfwdENOxQUrX0JbpN5DnKGMAKIfdiWa5oDeKQ3OoQ58y CC8vjtaaGFDgpJxoLwqzhBYHPGFgins5HIERcCQPGAJKWu/ku4XLh+Fu7UyBubDCelxKTbnj26Ew bochltRqGIE8hbwSXEzRNo4g+NXkaRMq2FFbaBtEE82yTmZUgFRYAFUvfGTPWblyZGtkepVuHyNb 0w/u24dpsz+uyCZZR04cHfRrWOKvqD3lDOwC4+sqd6f7F841R0N2tqSh/WDUZzWdvPBaBOz0FWFL b9porIeZ3Jm08tAMHa+3SGRXfK4RAmxVCmIQQypGabE= ) ; Key ID = 60955 . 172800 IN DNSKEY ( 256 3 8 AwEAAcVnO2jZFx4756Rb/yAhJnsl72eemsObU43nclmXwqdJlp+kC5WQjGYkqLT5xkaUCPhkr4NK LLrIBZXeSGazc6gx/yrrMtUpXcQvax6kfDJPTu974OmeEbtjyyP7ZG5tUfSwNWt/4EuxDNmZTESG 8jU0ZLjYIB11pK0gSXQbMVPyIyGtFGHMPx6UxWn6zUzpECWRFbqEvkA6Y13zeJ1jG2Rki/zs7a/o 13FTl/kI9013Eh6l6Kc2zxbc14GS8fpM0/xQIrZZyeiXj/2C4RcsPeqWuNj9m0qSQrbrCZtLHb20 U8x1uue4iwSX9y7LpwZd6vjYd1d6dgBa1Xxgc/TC+m8= ) ; Key ID = 951 . 172800 IN DNSKEY ( 257 3 8 AwEAAaz/tAm8yTn4Mfeh5eyI96WSVexTBAvkMgJzkKTOiW1vkIbzxeF3+/4RgWOq7HrxRixHlFlE xOLAJr5emLvN7SWXgnLh4+B5xQlNVz8Og8kvArMtNROxVQuCaSnIDdD5LKyWbRd2n9WGe2R8PzgC mr3EgVLrjyBxWezF0jLHwVN8efS3rCj/EWgvIWgb9tarpVUDK/b58Da+sqqls3eNbuv7pr+eoZG+ SrDK6nWeL3c6H5Apxz7LjVc1uTIdsIXxuOLYA4/ilBmSVIzuDWfdRUfhHdY6+cn8HFRm+2hM8AnX GXws9555KrUB5qihylGa8subX2Nn6UwNR1AkUTV74bU= ) ; Key ID = 20326 . 172800 IN RRSIG ( DNSKEY 8 0 172800 20230412000000 20230322000000 20326 . XSxf/IWwVx/BM4ekFQBxNAPnhPs89l7Cr2M1OiNKNd4rC/kNmD/VOJ/06K69XTHE2SwlDAm+NiF9 CMXfRO1hB2KTpS70GiO9BXnHBlHcJF5ggV6rsaSRt924eGGEcsahkgoi/fgHCOtGIveKJPQ2xOKg RmNsix/jDSfdweyjH71AbE2lvcmPAJ3VhuFlx+mvzW8iak/unW4IySBYRVuFCdV3cVQKmXTqDpd2 ycCcmYM5xRb4YpCq5dsZBCaHVhuknii7dMV7I86TPCPFJoiiBLTqzMoc5ObhLZnkHDdTjiOgeIBJ Dw5X5w7M0wK36+5WDqm2JV6NqIc2XiiXDI1/7Q== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1450 ;; option:
	Found 3 DNSKEY records for .
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAbF1LAxEQPtClEQno48k6u7JjCOfVfwdENOxQUrX0JbpN5DnKGMAKIfdiWa5oDeKQ3OoQ58y CC8vjtaaGFDgpJxoLwqzhBYHPGFgins5HIERcCQPGAJKWu/ku4XLh+Fu7UyBubDCelxKTbnj26Ew bochltRqGIE8hbwSXEzRNo4g+NXkaRMq2FFbaBtEE82yTmZUgFRYAFUvfGTPWblyZGtkepVuHyNb 0w/u24dpsz+uyCZZR04cHfRrWOKvqD3lDOwC4+sqd6f7F841R0N2tqSh/WDUZzWdvPBaBOz0FWFL b9porIeZ3Jm08tAMHa+3SGRXfK4RAmxVCmIQQypGabE= ) ; Key ID = 60955`
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAcVnO2jZFx4756Rb/yAhJnsl72eemsObU43nclmXwqdJlp+kC5WQjGYkqLT5xkaUCPhkr4NK LLrIBZXeSGazc6gx/yrrMtUpXcQvax6kfDJPTu974OmeEbtjyyP7ZG5tUfSwNWt/4EuxDNmZTESG 8jU0ZLjYIB11pK0gSXQbMVPyIyGtFGHMPx6UxWn6zUzpECWRFbqEvkA6Y13zeJ1jG2Rki/zs7a/o 13FTl/kI9013Eh6l6Kc2zxbc14GS8fpM0/xQIrZZyeiXj/2C4RcsPeqWuNj9m0qSQrbrCZtLHb20 U8x1uue4iwSX9y7LpwZd6vjYd1d6dgBa1Xxgc/TC+m8= ) ; Key ID = 951`
	`. 172800 IN DNSKEY ( 257 3 8 AwEAAaz/tAm8yTn4Mfeh5eyI96WSVexTBAvkMgJzkKTOiW1vkIbzxeF3+/4RgWOq7HrxRixHlFlE xOLAJr5emLvN7SWXgnLh4+B5xQlNVz8Og8kvArMtNROxVQuCaSnIDdD5LKyWbRd2n9WGe2R8PzgC mr3EgVLrjyBxWezF0jLHwVN8efS3rCj/EWgvIWgb9tarpVUDK/b58Da+sqqls3eNbuv7pr+eoZG+ SrDK6nWeL3c6H5Apxz7LjVc1uTIdsIXxuOLYA4/ilBmSVIzuDWfdRUfhHdY6+cn8HFRm+2hM8AnX GXws9555KrUB5qihylGa8subX2Nn6UwNR1AkUTV74bU= ) ; Key ID = 20326`
	DNSKEY=20326/SEP is now in the chain-of-trust
	DS=20326/SHA-256 verifies DNSKEY=20326/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`. 172800 IN RRSIG ( DNSKEY 8 0 172800 20230412000000 20230322000000 20326 . XSxf/IWwVx/BM4ekFQBxNAPnhPs89l7Cr2M1OiNKNd4rC/kNmD/VOJ/06K69XTHE2SwlDAm+NiF9 CMXfRO1hB2KTpS70GiO9BXnHBlHcJF5ggV6rsaSRt924eGGEcsahkgoi/fgHCOtGIveKJPQ2xOKg RmNsix/jDSfdweyjH71AbE2lvcmPAJ3VhuFlx+mvzW8iak/unW4IySBYRVuFCdV3cVQKmXTqDpd2 ycCcmYM5xRb4YpCq5dsZBCaHVhuknii7dMV7I86TPCPFJoiiBLTqzMoc5ObhLZnkHDdTjiOgeIBJ Dw5X5w7M0wK36+5WDqm2JV6NqIc2XiiXDI1/7Q== )`
	RRSIG=20326 and DNSKEY=20326/SEP verifies the DNSKEY RRset
	DNSKEY=60955 is now in the chain-of-trust
	DNSKEY=951 is now in the chain-of-trust
	Query to g.root-servers.net for columbia.edu/A
	Received 1171 bytes from 192.112.36.4
	;; Response received from 192.112.36.4 (1171 octets) ;; HEADER SECTION ;; id = 57844 ;; qr = 1 aa = 0 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 0 nscount = 15 arcount = 27 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (15 records) edu. 172800 IN NS h.edu-servers.net. edu. 172800 IN NS b.edu-servers.net. edu. 172800 IN NS e.edu-servers.net. edu. 172800 IN NS l.edu-servers.net. edu. 172800 IN NS k.edu-servers.net. edu. 172800 IN NS f.edu-servers.net. edu. 172800 IN NS d.edu-servers.net. edu. 172800 IN NS a.edu-servers.net. edu. 172800 IN NS g.edu-servers.net. edu. 172800 IN NS j.edu-servers.net. edu. 172800 IN NS c.edu-servers.net. edu. 172800 IN NS i.edu-servers.net. edu. 172800 IN NS m.edu-servers.net. edu. 86400 IN DS ( 28065 8 2 4172496cde85534e51129040355bd04b1fcfebae996dfdde652006f6f8b2ce76 ) edu. 86400 IN RRSIG ( DS 8 1 86400 20230405170000 20230323160000 951 . iNH7xOGuEcyBH9BMatdWxnGKfh7imIGDY/SpR7N+EbA9SbQFxV2ZzsZoBkmLPnMnl+KVoqzUeELi T+Ofqwk/CKBSxqz4g18+XrjtS6hG/rcd3NwoLPJ60frSv5+1grW8Hu/mxqfCcZUnWoecpOPgstQd uePtGisuwm3laBJMs3cBh1ifQNyvU0ieKPtdOzD/8WL7mluNbehXpXh+3l8hv/aJrZn7BqrD9YYA 4Z/jPueFSR4jNoDSCPoP55PD9WLY0Y4odzekjrX2W7mhJ0JOOhTv3rKo7arKp0oqXm6sPQSucwsZ zC7JaveCTVM6XNiGMHftmolTdRYiLfZLrxFyPw== ) ;; ADDITIONAL SECTION (27 records) m.edu-servers.net. 172800 IN A 192.55.83.30 l.edu-servers.net. 172800 IN A 192.41.162.30 k.edu-servers.net. 172800 IN A 192.52.178.30 j.edu-servers.net. 172800 IN A 192.48.79.30 i.edu-servers.net. 172800 IN A 192.43.172.30 h.edu-servers.net. 172800 IN A 192.54.112.30 g.edu-servers.net. 172800 IN A 192.42.93.30 f.edu-servers.net. 172800 IN A 192.35.51.30 e.edu-servers.net. 172800 IN A 192.12.94.30 d.edu-servers.net. 172800 IN A 192.31.80.30 c.edu-servers.net. 172800 IN A 192.26.92.30 b.edu-servers.net. 172800 IN A 192.33.14.30 a.edu-servers.net. 172800 IN A 192.5.6.30 m.edu-servers.net. 172800 IN AAAA 2001:501:b1f9::30 l.edu-servers.net. 172800 IN AAAA 2001:500:d937::30 k.edu-servers.net. 172800 IN AAAA 2001:503:d2d::30 j.edu-servers.net. 172800 IN AAAA 2001:502:7094::30 i.edu-servers.net. 172800 IN AAAA 2001:503:39c1::30 h.edu-servers.net. 172800 IN AAAA 2001:502:8cc::30 g.edu-servers.net. 172800 IN AAAA 2001:503:eea3::30 f.edu-servers.net. 172800 IN AAAA 2001:503:d414::30 e.edu-servers.net. 172800 IN AAAA 2001:502:1ca1::30 d.edu-servers.net. 172800 IN AAAA 2001:500:856e::30 c.edu-servers.net. 172800 IN AAAA 2001:503:83eb::30 b.edu-servers.net. 172800 IN AAAA 2001:503:231d::2:30 a.edu-servers.net. 172800 IN AAAA 2001:503:a83e::2:30 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Query to f.root-servers.net for edu/DNSKEY
	Received 1162 bytes from 192.5.5.241
	;; Response received from 192.5.5.241 (1162 octets) ;; HEADER SECTION ;; id = 37399 ;; qr = 1 aa = 0 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 0 nscount = 15 arcount = 27 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1472 ;; option: ;; QUESTION SECTION (1 record) ;; edu. IN DNSKEY ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (15 records) edu. 172800 IN NS e.edu-servers.net. edu. 172800 IN NS b.edu-servers.net. edu. 172800 IN NS a.edu-servers.net. edu. 172800 IN NS d.edu-servers.net. edu. 172800 IN NS i.edu-servers.net. edu. 172800 IN NS f.edu-servers.net. edu. 172800 IN NS j.edu-servers.net. edu. 172800 IN NS k.edu-servers.net. edu. 172800 IN NS c.edu-servers.net. edu. 172800 IN NS g.edu-servers.net. edu. 172800 IN NS h.edu-servers.net. edu. 172800 IN NS l.edu-servers.net. edu. 172800 IN NS m.edu-servers.net. edu. 86400 IN DS ( 28065 8 2 4172496cde85534e51129040355bd04b1fcfebae996dfdde652006f6f8b2ce76 ) edu. 86400 IN RRSIG ( DS 8 1 86400 20230405170000 20230323160000 951 . iNH7xOGuEcyBH9BMatdWxnGKfh7imIGDY/SpR7N+EbA9SbQFxV2ZzsZoBkmLPnMnl+KVoqzUeELi T+Ofqwk/CKBSxqz4g18+XrjtS6hG/rcd3NwoLPJ60frSv5+1grW8Hu/mxqfCcZUnWoecpOPgstQd uePtGisuwm3laBJMs3cBh1ifQNyvU0ieKPtdOzD/8WL7mluNbehXpXh+3l8hv/aJrZn7BqrD9YYA 4Z/jPueFSR4jNoDSCPoP55PD9WLY0Y4odzekjrX2W7mhJ0JOOhTv3rKo7arKp0oqXm6sPQSucwsZ zC7JaveCTVM6XNiGMHftmolTdRYiLfZLrxFyPw== ) ;; ADDITIONAL SECTION (27 records) e.edu-servers.net. 172800 IN A 192.12.94.30 e.edu-servers.net. 172800 IN AAAA 2001:502:1ca1::30 b.edu-servers.net. 172800 IN A 192.33.14.30 b.edu-servers.net. 172800 IN AAAA 2001:503:231d::2:30 a.edu-servers.net. 172800 IN A 192.5.6.30 a.edu-servers.net. 172800 IN AAAA 2001:503:a83e::2:30 d.edu-servers.net. 172800 IN A 192.31.80.30 d.edu-servers.net. 172800 IN AAAA 2001:500:856e::30 i.edu-servers.net. 172800 IN A 192.43.172.30 i.edu-servers.net. 172800 IN AAAA 2001:503:39c1::30 f.edu-servers.net. 172800 IN A 192.35.51.30 f.edu-servers.net. 172800 IN AAAA 2001:503:d414::30 j.edu-servers.net. 172800 IN A 192.48.79.30 j.edu-servers.net. 172800 IN AAAA 2001:502:7094::30 k.edu-servers.net. 172800 IN A 192.52.178.30 k.edu-servers.net. 172800 IN AAAA 2001:503:d2d::30 c.edu-servers.net. 172800 IN A 192.26.92.30 c.edu-servers.net. 172800 IN AAAA 2001:503:83eb::30 g.edu-servers.net. 172800 IN A 192.42.93.30 g.edu-servers.net. 172800 IN AAAA 2001:503:eea3::30 h.edu-servers.net. 172800 IN A 192.54.112.30 h.edu-servers.net. 172800 IN AAAA 2001:502:8cc::30 l.edu-servers.net. 172800 IN A 192.41.162.30 l.edu-servers.net. 172800 IN AAAA 2001:500:d937::30 m.edu-servers.net. 172800 IN A 192.55.83.30 m.edu-servers.net. 172800 IN AAAA 2001:501:b1f9::30 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1472 ;; option:
	Found child zone edu

edu

	Checking DS between . and edu
	Query to f.root-servers.net for edu/DS
	Received 367 bytes from 192.5.5.241
	;; Response received from 192.5.5.241 (367 octets) ;; HEADER SECTION ;; id = 51163 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 2 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1472 ;; option: ;; QUESTION SECTION (1 record) ;; edu. IN DS ;; ANSWER SECTION (2 records) edu. 86400 IN DS ( 28065 8 2 4172496cde85534e51129040355bd04b1fcfebae996dfdde652006f6f8b2ce76 ) edu. 86400 IN RRSIG ( DS 8 1 86400 20230405170000 20230323160000 951 . iNH7xOGuEcyBH9BMatdWxnGKfh7imIGDY/SpR7N+EbA9SbQFxV2ZzsZoBkmLPnMnl+KVoqzUeELi T+Ofqwk/CKBSxqz4g18+XrjtS6hG/rcd3NwoLPJ60frSv5+1grW8Hu/mxqfCcZUnWoecpOPgstQd uePtGisuwm3laBJMs3cBh1ifQNyvU0ieKPtdOzD/8WL7mluNbehXpXh+3l8hv/aJrZn7BqrD9YYA 4Z/jPueFSR4jNoDSCPoP55PD9WLY0Y4odzekjrX2W7mhJ0JOOhTv3rKo7arKp0oqXm6sPQSucwsZ zC7JaveCTVM6XNiGMHftmolTdRYiLfZLrxFyPw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1472 ;; option:
	Found 1 DS records for edu in the . zone
	DS=28065/SHA-256 has algorithm RSASHA256
	Found 1 RRSIGs over DS RRset
	`edu. 86400 IN RRSIG ( DS 8 1 86400 20230405170000 20230323160000 951 . iNH7xOGuEcyBH9BMatdWxnGKfh7imIGDY/SpR7N+EbA9SbQFxV2ZzsZoBkmLPnMnl+KVoqzUeELi T+Ofqwk/CKBSxqz4g18+XrjtS6hG/rcd3NwoLPJ60frSv5+1grW8Hu/mxqfCcZUnWoecpOPgstQd uePtGisuwm3laBJMs3cBh1ifQNyvU0ieKPtdOzD/8WL7mluNbehXpXh+3l8hv/aJrZn7BqrD9YYA 4Z/jPueFSR4jNoDSCPoP55PD9WLY0Y4odzekjrX2W7mhJ0JOOhTv3rKo7arKp0oqXm6sPQSucwsZ zC7JaveCTVM6XNiGMHftmolTdRYiLfZLrxFyPw== )`
	RRSIG=951 and DNSKEY=951 verifies the DS RRset
	DS=28065/SHA-256 is now in the chain-of-trust
	`edu. 86400 IN DS ( 28065 8 2 4172496cde85534e51129040355bd04b1fcfebae996dfdde652006f6f8b2ce76 )`
	Query to j.edu-servers.net for edu/DNSKEY
	Received 775 bytes from 192.48.79.30
	;; Response received from 192.48.79.30 (775 octets) ;; HEADER SECTION ;; id = 49458 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 3 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4096 ;; option: ;; QUESTION SECTION (1 record) ;; edu. IN DNSKEY ;; ANSWER SECTION (3 records) edu. 86400 IN DNSKEY ( 257 3 8 AQOluvuVWACqSUX6EZr3d5YIIv13SDXBpDeGRCIET3T0l1wp0NprtJhfc1YVehIlNqucijLnEhSL N2i0Txnh3bU5aQJLRf/qm21etL35ozAIlnfSgY5D0nxLPoBIRq++8Mxvr+2YCSRaCNyrqaU4TnHa PiHLuKe7sGyHQ8K8rXst7HxF5zgG+gIeytYIxpy4/bAaKCNVvGaYHxuNSBJBiYSrxjiZk268EP6E 3T+bSdi2HepB3ZuBWyOewsmHO8aoHmzIH049vBNI7iFZByRKY9yAJ8TshANtiUHHwAF7JJtWLW9o O10BqygYG+zS4weKGtkcNpzOUDWs41FWM8aFs4L1 ) ; Key ID = 28065 edu. 86400 IN DNSKEY ( 256 3 8 AQOg/vZq47addii610nWMN/Ru6cngPoC2iVGe8qCHMiHumpRfqeHEmgck4mymjeFJcPlQDjmpjMW 3vuOWKWnwPTkPY30OKO0GT+vZIxpxyDIEKIjg/dxfcdf1rX462B4qtheGdktELQMRYta6+bE+lpk 7y50dSEysZarK1VDmLF261wzujMdO0ar+qoHfLL3pAK5MRy4uBQIWypGLEwDbRQ9 ) ; Key ID = 34085 edu. 86400 IN RRSIG ( DNSKEY 8 1 86400 20230404185303 20230320184803 28065 edu. OEZAwlFQiT9j6osSDg9XMNY3nA7jMGHZaXYzzd9WSlAXxSvsTfqGJdsnO2XoKvIxlmQMYxVt02/7 Q/kxLafkAcrrStRB/uTqwgfkE407QxZbd6hZU9BzTZRDiwJRAJPCoxnegcinvFAHDubVZ14MZEjY OOxuXoEJ0XFtvD6Z6QNdvgiOramCJ7umPHRryE6tHdAAOSyd/IxmFjDRMMEV3RGHWcFsQTn+ZHLP rUcE5uIAbaIGR51LtCCVfYLvK/THhTAnLVvk/b//3LdEOADChcf8d+4eg0BVBFO9jOCdY5Z3qH05 0LlYXBe0KelGklyYr2X3QBzQhmar9D7tXcfMwQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4096 ;; option:
	Found 2 DNSKEY records for edu
	`edu. 86400 IN DNSKEY ( 257 3 8 AQOluvuVWACqSUX6EZr3d5YIIv13SDXBpDeGRCIET3T0l1wp0NprtJhfc1YVehIlNqucijLnEhSL N2i0Txnh3bU5aQJLRf/qm21etL35ozAIlnfSgY5D0nxLPoBIRq++8Mxvr+2YCSRaCNyrqaU4TnHa PiHLuKe7sGyHQ8K8rXst7HxF5zgG+gIeytYIxpy4/bAaKCNVvGaYHxuNSBJBiYSrxjiZk268EP6E 3T+bSdi2HepB3ZuBWyOewsmHO8aoHmzIH049vBNI7iFZByRKY9yAJ8TshANtiUHHwAF7JJtWLW9o O10BqygYG+zS4weKGtkcNpzOUDWs41FWM8aFs4L1 ) ; Key ID = 28065`
	`edu. 86400 IN DNSKEY ( 256 3 8 AQOg/vZq47addii610nWMN/Ru6cngPoC2iVGe8qCHMiHumpRfqeHEmgck4mymjeFJcPlQDjmpjMW 3vuOWKWnwPTkPY30OKO0GT+vZIxpxyDIEKIjg/dxfcdf1rX462B4qtheGdktELQMRYta6+bE+lpk 7y50dSEysZarK1VDmLF261wzujMdO0ar+qoHfLL3pAK5MRy4uBQIWypGLEwDbRQ9 ) ; Key ID = 34085`
	DNSKEY=28065/SEP is now in the chain-of-trust
	DS=28065/SHA-256 verifies DNSKEY=28065/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`edu. 86400 IN RRSIG ( DNSKEY 8 1 86400 20230404185303 20230320184803 28065 edu. OEZAwlFQiT9j6osSDg9XMNY3nA7jMGHZaXYzzd9WSlAXxSvsTfqGJdsnO2XoKvIxlmQMYxVt02/7 Q/kxLafkAcrrStRB/uTqwgfkE407QxZbd6hZU9BzTZRDiwJRAJPCoxnegcinvFAHDubVZ14MZEjY OOxuXoEJ0XFtvD6Z6QNdvgiOramCJ7umPHRryE6tHdAAOSyd/IxmFjDRMMEV3RGHWcFsQTn+ZHLP rUcE5uIAbaIGR51LtCCVfYLvK/THhTAnLVvk/b//3LdEOADChcf8d+4eg0BVBFO9jOCdY5Z3qH05 0LlYXBe0KelGklyYr2X3QBzQhmar9D7tXcfMwQ== )`
	RRSIG=28065 and DNSKEY=28065/SEP verifies the DNSKEY RRset
	DNSKEY=34085 is now in the chain-of-trust
	Query to l.edu-servers.net for columbia.edu/A
	Received 796 bytes from 192.41.162.30
	;; Response received from 192.41.162.30 (796 octets) ;; HEADER SECTION ;; id = 12623 ;; qr = 1 aa = 0 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 0 nscount = 11 arcount = 3 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4096 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (11 records) columbia.edu. 172800 IN NS dns2.itd.umich.edu. columbia.edu. 172800 IN NS auth1.dns.cogentco.com. columbia.edu. 172800 IN NS auth2.dns.cogentco.com. columbia.edu. 172800 IN NS auth4.dns.cogentco.com. columbia.edu. 172800 IN NS auth5.dns.cogentco.com. columbia.edu. 172800 IN NS ns1.lse.ac.uk. columbia.edu. 172800 IN NS ext-ns1.columbia.edu. 9DHS4EP5G85PF9NUFK06HEK0O48QGK77.edu. 86400 IN NSEC3 ( 1 1 0 - 9dql407ijb4jhadmf7cjmufnqmr4df7m NS SOA RRSIG DNSKEY NSEC3PARAM ) 9DHS4EP5G85PF9NUFK06HEK0O48QGK77.edu. 86400 IN RRSIG ( NSEC3 8 2 86400 20230329062209 20230322051209 34085 edu. ezSSu1G8V/H4eqQGDLkZCEgD2BEBXmiOxCTIai0v4ipngNAMOJQrvDyfIz8aqmu+8r4RjLmEobk9 TJkFGuuhTVDwTTNeXgtJlRmwypUQ86Xwf1T2CSUmtXh19DBNNSpGxl/fsCtBSO/6rvi8yckU84n6 608/gsGUiFWT/zzVYuarRu9QI6VR+Nhgt5EhF1eslSN4m+cnuxlCV0RvPzYD6g== ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN NSEC3 ( 1 1 0 - 84r3vll0i0qrhsi5n9sj2knksff0jnmp NS DS RRSIG ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN RRSIG ( NSEC3 8 2 86400 20230327062307 20230320051307 34085 edu. WuQq4PIb0qHuYzgZmSVWQiuXny1WjyrZ4eycThX7lWu77LwDo85KqjcXwhTmbcPyOPgZWsQP0oV2 Vs7LFjhEmmOkZMs21wALGnvZuUzmJNWT3Jp5APzC5BPiVVWWzqpRfcl94cUV5A/D1Wl7CaHmsYkM +L3zPEaYEwiK8CRkPuj1+5gZeRtxUpL0gOH5sfcw2Ya8O2ibK5w77fTTgCdbeA== ) ;; ADDITIONAL SECTION (3 records) dns2.itd.umich.edu. 172800 IN A 192.12.80.222 ext-ns1.columbia.edu. 172800 IN A 128.59.1.1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4096 ;; option:
	Query to l.edu-servers.net for columbia.edu/DNSKEY
	Received 796 bytes from 192.41.162.30
	;; Response received from 192.41.162.30 (796 octets) ;; HEADER SECTION ;; id = 51662 ;; qr = 1 aa = 0 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 0 nscount = 11 arcount = 3 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4096 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN DNSKEY ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (11 records) columbia.edu. 172800 IN NS dns2.itd.umich.edu. columbia.edu. 172800 IN NS auth1.dns.cogentco.com. columbia.edu. 172800 IN NS auth2.dns.cogentco.com. columbia.edu. 172800 IN NS auth4.dns.cogentco.com. columbia.edu. 172800 IN NS auth5.dns.cogentco.com. columbia.edu. 172800 IN NS ns1.lse.ac.uk. columbia.edu. 172800 IN NS ext-ns1.columbia.edu. 9DHS4EP5G85PF9NUFK06HEK0O48QGK77.edu. 86400 IN NSEC3 ( 1 1 0 - 9dql407ijb4jhadmf7cjmufnqmr4df7m NS SOA RRSIG DNSKEY NSEC3PARAM ) 9DHS4EP5G85PF9NUFK06HEK0O48QGK77.edu. 86400 IN RRSIG ( NSEC3 8 2 86400 20230329062209 20230322051209 34085 edu. ezSSu1G8V/H4eqQGDLkZCEgD2BEBXmiOxCTIai0v4ipngNAMOJQrvDyfIz8aqmu+8r4RjLmEobk9 TJkFGuuhTVDwTTNeXgtJlRmwypUQ86Xwf1T2CSUmtXh19DBNNSpGxl/fsCtBSO/6rvi8yckU84n6 608/gsGUiFWT/zzVYuarRu9QI6VR+Nhgt5EhF1eslSN4m+cnuxlCV0RvPzYD6g== ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN NSEC3 ( 1 1 0 - 84r3vll0i0qrhsi5n9sj2knksff0jnmp NS DS RRSIG ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN RRSIG ( NSEC3 8 2 86400 20230327062307 20230320051307 34085 edu. WuQq4PIb0qHuYzgZmSVWQiuXny1WjyrZ4eycThX7lWu77LwDo85KqjcXwhTmbcPyOPgZWsQP0oV2 Vs7LFjhEmmOkZMs21wALGnvZuUzmJNWT3Jp5APzC5BPiVVWWzqpRfcl94cUV5A/D1Wl7CaHmsYkM +L3zPEaYEwiK8CRkPuj1+5gZeRtxUpL0gOH5sfcw2Ya8O2ibK5w77fTTgCdbeA== ) ;; ADDITIONAL SECTION (3 records) dns2.itd.umich.edu. 172800 IN A 192.12.80.222 ext-ns1.columbia.edu. 172800 IN A 128.59.1.1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4096 ;; option:
	Found child zone columbia.edu

columbia.edu

	Checking DS between edu and columbia.edu
	Query to d.edu-servers.net for columbia.edu/DS
	Received 860 bytes from 192.31.80.30
	;; Response received from 192.31.80.30 (860 octets) ;; HEADER SECTION ;; id = 32968 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 0 nscount = 6 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4096 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN DS ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (6 records) 9DHS4EP5G85PF9NUFK06HEK0O48QGK77.edu. 86400 IN NSEC3 ( 1 1 0 - 9dql407ijb4jhadmf7cjmufnqmr4df7m NS SOA RRSIG DNSKEY NSEC3PARAM ) 9DHS4EP5G85PF9NUFK06HEK0O48QGK77.edu. 86400 IN RRSIG ( NSEC3 8 2 86400 20230329062209 20230322051209 34085 edu. ezSSu1G8V/H4eqQGDLkZCEgD2BEBXmiOxCTIai0v4ipngNAMOJQrvDyfIz8aqmu+8r4RjLmEobk9 TJkFGuuhTVDwTTNeXgtJlRmwypUQ86Xwf1T2CSUmtXh19DBNNSpGxl/fsCtBSO/6rvi8yckU84n6 608/gsGUiFWT/zzVYuarRu9QI6VR+Nhgt5EhF1eslSN4m+cnuxlCV0RvPzYD6g== ) edu. 900 IN SOA ( a.edu-servers.net. nstld.verisign-grs.com. 1679601148 ;serial 1800 ;refresh 900 ;retry 604800 ;expire 86400 ;minimum ) edu. 900 IN RRSIG ( SOA 8 1 900 20230330195228 20230323184228 34085 edu. atdaRwOjUGqXnmf3upGtSHU0FJeu8IcI26PyjTvZEWpNk4LfiJ1swX+3r7cR/FKyTPK+IkwK53rm TzIBFJQ/7qsuCq1q61qPhdP6Qqn8PUuW9xvD7Mu1sqIjtfYj86SFMe0794yrPMLZ7KvK3GjP8C8V imuqUV01DsVIo5QnWraaG0QPNvm65QfLdy0JP7XR+zPHOHBGJzvm1tK8PEEkdQ== ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN NSEC3 ( 1 1 0 - 84r3vll0i0qrhsi5n9sj2knksff0jnmp NS DS RRSIG ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN RRSIG ( NSEC3 8 2 86400 20230327062307 20230320051307 34085 edu. WuQq4PIb0qHuYzgZmSVWQiuXny1WjyrZ4eycThX7lWu77LwDo85KqjcXwhTmbcPyOPgZWsQP0oV2 Vs7LFjhEmmOkZMs21wALGnvZuUzmJNWT3Jp5APzC5BPiVVWWzqpRfcl94cUV5A/D1Wl7CaHmsYkM +L3zPEaYEwiK8CRkPuj1+5gZeRtxUpL0gOH5sfcw2Ya8O2ibK5w77fTTgCdbeA== ) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4096 ;; option:
	No DS records found for columbia.edu in the edu zone
	Query to dns2.itd.umich.edu for columbia.edu/DNSKEY
	Received 96 bytes from 192.12.80.222
	;; Response received from 192.12.80.222 (96 octets) ;; HEADER SECTION ;; id = 63562 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 0 nscount = 1 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN DNSKEY ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (1 record) columbia.edu. 300 IN SOA ( ext-ns1.columbia.edu. hostmaster.columbia.edu. 76586 ;serial 3600 ;refresh 1800 ;retry 2419200 ;expire 300 ;minimum ) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	No DNSKEY records found
	Query to auth1.dns.cogentco.com for columbia.edu/A
	Received 306 bytes from 66.28.0.14
	;; Response received from 66.28.0.14 (306 octets) ;; HEADER SECTION ;; id = 63482 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 7 arcount = 4 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN A 128.59.105.24 ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS ns1.lse.ac.uk. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. ;; ADDITIONAL SECTION (4 records) ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	auth1.dns.cogentco.com is authoritative for columbia.edu
	Query to auth5.dns.cogentco.com for columbia.edu/SOA
	Received 337 bytes from 80.91.64.50
	;; Response received from 80.91.64.50 (337 octets) ;; HEADER SECTION ;; id = 15552 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 7 arcount = 4 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN SOA ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN SOA ( ext-ns1.columbia.edu. hostmaster.columbia.edu. 76586 ;serial 3600 ;refresh 1800 ;retry 2419200 ;expire 300 ;minimum ) ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS auth1.dns.cogentco.com. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS ns1.lse.ac.uk. columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. ;; ADDITIONAL SECTION (4 records) ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Query to dns2.itd.umich.edu for columbia.edu/SOA
	Received 350 bytes from 192.12.80.222
	;; Response received from 192.12.80.222 (350 octets) ;; HEADER SECTION ;; id = 4243 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 7 arcount = 5 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN SOA ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN SOA ( ext-ns1.columbia.edu. hostmaster.columbia.edu. 76586 ;serial 3600 ;refresh 1800 ;retry 2419200 ;expire 300 ;minimum ) ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS ns1.lse.ac.uk. columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. ;; ADDITIONAL SECTION (5 records) dns2.itd.umich.edu. 1800 IN A 192.12.80.222 ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Query to ns1.lse.ac.uk for columbia.edu/SOA
	Received 168 bytes from 158.143.96.8
	;; Response received from 158.143.96.8 (168 octets) ;; HEADER SECTION ;; id = 61808 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 0 arcount = 4 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4000 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN SOA ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN SOA ( ext-ns1.columbia.edu. hostmaster.columbia.edu. 76586 ;serial 3600 ;refresh 1800 ;retry 2419200 ;expire 300 ;minimum ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (4 records) ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4000 ;; option:
	Query to ext-ns1.columbia.edu for columbia.edu/SOA
	Received 96 bytes from 128.59.1.1
	;; Response received from 128.59.1.1 (96 octets) ;; HEADER SECTION ;; id = 40877 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 0 arcount = 1 ;; do = 0 ;; EDNS version 0 ;; flags: 0000 ;; rcode: NOERROR ;; size: 1220 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN SOA ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN SOA ( ext-ns1.columbia.edu. hostmaster.columbia.edu. 76586 ;serial 3600 ;refresh 1800 ;retry 2419200 ;expire 300 ;minimum ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 0000 ;; rcode: NOERROR ;; size: 1220 ;; option:
	Query to auth4.dns.cogentco.com for columbia.edu/SOA
	Received 337 bytes from 80.245.32.74
	;; Response received from 80.245.32.74 (337 octets) ;; HEADER SECTION ;; id = 9847 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 7 arcount = 4 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN SOA ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN SOA ( ext-ns1.columbia.edu. hostmaster.columbia.edu. 76586 ;serial 3600 ;refresh 1800 ;retry 2419200 ;expire 300 ;minimum ) ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS auth1.dns.cogentco.com. columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS ns1.lse.ac.uk. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. ;; ADDITIONAL SECTION (4 records) ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Query to auth2.dns.cogentco.com for columbia.edu/SOA
	Received 337 bytes from 66.28.0.30
	;; Response received from 66.28.0.30 (337 octets) ;; HEADER SECTION ;; id = 54077 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 7 arcount = 4 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN SOA ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN SOA ( ext-ns1.columbia.edu. hostmaster.columbia.edu. 76586 ;serial 3600 ;refresh 1800 ;retry 2419200 ;expire 300 ;minimum ) ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS auth5.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS ns1.lse.ac.uk. ;; ADDITIONAL SECTION (4 records) ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Query to auth1.dns.cogentco.com for columbia.edu/A
	Received 306 bytes from 66.28.0.14
	;; Response received from 66.28.0.14 (306 octets) ;; HEADER SECTION ;; id = 11718 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 7 arcount = 4 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN A 128.59.105.24 ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS ns1.lse.ac.uk. columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. ;; ADDITIONAL SECTION (4 records) ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	columbia.edu A RR has value 128.59.105.24
	No RRSIGs found

columbia.edu

	Query to auth5.dns.cogentco.com for columbia.edu/A
	Received 306 bytes from 80.91.64.50
	;; Response received from 80.91.64.50 (306 octets) ;; HEADER SECTION ;; id = 30907 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 7 arcount = 4 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN A 128.59.105.24 ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. columbia.edu. 3600 IN NS ns1.lse.ac.uk. columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. ;; ADDITIONAL SECTION (4 records) ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	auth5.dns.cogentco.com is authoritative for columbia.edu
	Query to auth5.dns.cogentco.com for columbia.edu/A
	Received 306 bytes from 80.91.64.50
	;; Response received from 80.91.64.50 (306 octets) ;; HEADER SECTION ;; id = 4728 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 7 arcount = 4 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN A 128.59.105.24 ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. columbia.edu. 3600 IN NS ns1.lse.ac.uk. columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. ;; ADDITIONAL SECTION (4 records) ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	columbia.edu A RR has value 128.59.105.24
	No RRSIGs found

columbia.edu

	Query to dns2.itd.umich.edu for columbia.edu/A
	Received 319 bytes from 192.12.80.222
	;; Response received from 192.12.80.222 (319 octets) ;; HEADER SECTION ;; id = 19969 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 7 arcount = 5 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN A 128.59.105.24 ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS ns1.lse.ac.uk. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. ;; ADDITIONAL SECTION (5 records) dns2.itd.umich.edu. 1800 IN A 192.12.80.222 ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	dns2.itd.umich.edu is authoritative for columbia.edu
	Query to dns2.itd.umich.edu for columbia.edu/A
	Received 319 bytes from 192.12.80.222
	;; Response received from 192.12.80.222 (319 octets) ;; HEADER SECTION ;; id = 55402 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 7 arcount = 5 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN A 128.59.105.24 ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS ns1.lse.ac.uk. columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. ;; ADDITIONAL SECTION (5 records) dns2.itd.umich.edu. 1800 IN A 192.12.80.222 ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	columbia.edu A RR has value 128.59.105.24
	No RRSIGs found

columbia.edu

	Query to ext-ns1.columbia.edu for columbia.edu/A
	Received 57 bytes from 128.59.1.1
	;; Response received from 128.59.1.1 (57 octets) ;; HEADER SECTION ;; id = 58992 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 0 arcount = 1 ;; do = 0 ;; EDNS version 0 ;; flags: 0000 ;; rcode: NOERROR ;; size: 1220 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN A 128.59.105.24 ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 0000 ;; rcode: NOERROR ;; size: 1220 ;; option:
	ext-ns1.columbia.edu is authoritative for columbia.edu
	Query to ext-ns1.columbia.edu for columbia.edu/A
	Received 57 bytes from 128.59.1.1
	;; Response received from 128.59.1.1 (57 octets) ;; HEADER SECTION ;; id = 14230 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 0 arcount = 1 ;; do = 0 ;; EDNS version 0 ;; flags: 0000 ;; rcode: NOERROR ;; size: 1220 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN A 128.59.105.24 ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 0000 ;; rcode: NOERROR ;; size: 1220 ;; option:
	columbia.edu A RR has value 128.59.105.24
	No RRSIGs found

columbia.edu

	Query to auth4.dns.cogentco.com for columbia.edu/A
	Received 306 bytes from 80.245.32.74
	;; Response received from 80.245.32.74 (306 octets) ;; HEADER SECTION ;; id = 18629 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 7 arcount = 4 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN A 128.59.105.24 ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS ns1.lse.ac.uk. columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. ;; ADDITIONAL SECTION (4 records) ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	auth4.dns.cogentco.com is authoritative for columbia.edu
	Query to auth4.dns.cogentco.com for columbia.edu/A
	Received 306 bytes from 80.245.32.74
	;; Response received from 80.245.32.74 (306 octets) ;; HEADER SECTION ;; id = 44560 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 7 arcount = 4 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN A 128.59.105.24 ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS ns1.lse.ac.uk. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. ;; ADDITIONAL SECTION (4 records) ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	columbia.edu A RR has value 128.59.105.24
	No RRSIGs found

columbia.edu

	Query to ns1.lse.ac.uk for columbia.edu/A
	Received 57 bytes from 158.143.96.8
	;; Response received from 158.143.96.8 (57 octets) ;; HEADER SECTION ;; id = 21299 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4000 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN A 128.59.105.24 ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4000 ;; option:
	ns1.lse.ac.uk is authoritative for columbia.edu
	Query to ns1.lse.ac.uk for columbia.edu/A
	Received 57 bytes from 158.143.96.8
	;; Response received from 158.143.96.8 (57 octets) ;; HEADER SECTION ;; id = 62325 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4000 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN A 128.59.105.24 ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4000 ;; option:
	columbia.edu A RR has value 128.59.105.24
	No RRSIGs found

columbia.edu

	Query to auth2.dns.cogentco.com for columbia.edu/A
	Received 306 bytes from 66.28.0.30
	;; Response received from 66.28.0.30 (306 octets) ;; HEADER SECTION ;; id = 63872 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 7 arcount = 4 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN A 128.59.105.24 ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS ns1.lse.ac.uk. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. ;; ADDITIONAL SECTION (4 records) ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	auth2.dns.cogentco.com is authoritative for columbia.edu
	Query to auth2.dns.cogentco.com for columbia.edu/A
	Received 306 bytes from 66.28.0.30
	;; Response received from 66.28.0.30 (306 octets) ;; HEADER SECTION ;; id = 35589 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 1 nscount = 7 arcount = 4 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; columbia.edu. IN A ;; ANSWER SECTION (1 record) columbia.edu. 3600 IN A 128.59.105.24 ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS ns1.lse.ac.uk. columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. ;; ADDITIONAL SECTION (4 records) ext-ns1.columbia.edu. 3600 IN A 128.59.1.1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	columbia.edu A RR has value 128.59.105.24
	No RRSIGs found

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