DNSSEC Analyzer - columbia.edu

Domain Name:

Time: 2022-08-12 11:10:09 UTC, NTP stratum 16

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 h.root-servers.net for ./DNSKEY
	Received 864 bytes from 198.97.190.53
	;; Response received from 198.97.190.53 (864 octets) ;; HEADER SECTION ;; id = 58482 ;; 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: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; . IN DNSKEY ;; ANSWER SECTION (3 records) . 172800 IN DNSKEY ( 256 3 8 AwEAAaQVKIqdmeLCaF4lq+IoKpejId9qqoIbZJ6cjB5MfyJYX3KVFXYyJ9rt4jKOwf4m2BoDOY66 V1upRumF+eu502HXzdOdJlioRLA9YiRyLgvfjzyfUYrExYT4/TDTS4XfQX2UcJDN5C7SQ9UxebZk /VjQfPAUU+hZKOcjOVRFbAHom4tIi+Rin0laGlAi8ZY5WUZypYKR0xvprtG0eXeOBMjbUt1EnhmO 2Bs52zC8B0cMjq6fMiYFUqtziALccsQczGngIDR0dIvvL54ky1JNNp19Ldy9ir27s7eRCYGbYI1W zR05/d4/nCmDSHkQS2BiesYufuWZZwm+FsitupCciwE= ) ; Key ID = 20826 . 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 20220831000000 20220810000000 20326 . FJNYHZUipwrjUsDOPlE6hwUza6fRp2vwI294cL6vn5P9B5V2NT4Uf/wWoJvJlUdKPYhLSu2mfTM+ 2ufpNU9sHB+0Z1YXBj2zK8qQlT9S/BW5v4trLo1sZzK8uvl0hXKOwBsoOiNWdvqqtfqBTpz+mzWO bVSoCnNSUyIJkDyydvbJ9W2zqP+EY448BC87+BOGn+rY0yYy9dp5NYbrAOTQDF0pudHp43LHYedc AfDtjwVREPVEWYkisVpJoT3EZbF31h1Gb/+P7v84UHi6Mykq5hgQ1fV0PIMczp53moxgJxfzr1Y8 TIQnMy3xxmDxIiLXbaeUtkyBU2iMA1JJfWExyg== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Found 2 DNSKEY records for .
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAaQVKIqdmeLCaF4lq+IoKpejId9qqoIbZJ6cjB5MfyJYX3KVFXYyJ9rt4jKOwf4m2BoDOY66 V1upRumF+eu502HXzdOdJlioRLA9YiRyLgvfjzyfUYrExYT4/TDTS4XfQX2UcJDN5C7SQ9UxebZk /VjQfPAUU+hZKOcjOVRFbAHom4tIi+Rin0laGlAi8ZY5WUZypYKR0xvprtG0eXeOBMjbUt1EnhmO 2Bs52zC8B0cMjq6fMiYFUqtziALccsQczGngIDR0dIvvL54ky1JNNp19Ldy9ir27s7eRCYGbYI1W zR05/d4/nCmDSHkQS2BiesYufuWZZwm+FsitupCciwE= ) ; Key ID = 20826`
	`. 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 20220831000000 20220810000000 20326 . FJNYHZUipwrjUsDOPlE6hwUza6fRp2vwI294cL6vn5P9B5V2NT4Uf/wWoJvJlUdKPYhLSu2mfTM+ 2ufpNU9sHB+0Z1YXBj2zK8qQlT9S/BW5v4trLo1sZzK8uvl0hXKOwBsoOiNWdvqqtfqBTpz+mzWO bVSoCnNSUyIJkDyydvbJ9W2zqP+EY448BC87+BOGn+rY0yYy9dp5NYbrAOTQDF0pudHp43LHYedc AfDtjwVREPVEWYkisVpJoT3EZbF31h1Gb/+P7v84UHi6Mykq5hgQ1fV0PIMczp53moxgJxfzr1Y8 TIQnMy3xxmDxIiLXbaeUtkyBU2iMA1JJfWExyg== )`
	RRSIG=20326 and DNSKEY=20326/SEP verifies the DNSKEY RRset
	DNSKEY=20826 is now in the chain-of-trust
	Query to c.root-servers.net for columbia.edu/A
	Received 1171 bytes from 192.33.4.12
	;; Response received from 192.33.4.12 (1171 octets) ;; HEADER SECTION ;; id = 45776 ;; 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 f.edu-servers.net. edu. 172800 IN NS k.edu-servers.net. edu. 172800 IN NS h.edu-servers.net. edu. 172800 IN NS e.edu-servers.net. edu. 172800 IN NS c.edu-servers.net. edu. 172800 IN NS g.edu-servers.net. edu. 172800 IN NS j.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 m.edu-servers.net. edu. 172800 IN NS l.edu-servers.net. edu. 86400 IN DS ( 28065 8 2 4172496cde85534e51129040355bd04b1fcfebae996dfdde652006f6f8b2ce76 ) edu. 86400 IN RRSIG ( DS 8 1 86400 20220825050000 20220812040000 20826 . itxV/CfWsbXmqLn2+0mLtr10NyaSFqWCcymWa8I7tkc+NS+vjq8ZG3r12AnbUjdF4KWaqpPK/ySh l7v3HVhS7VKjaNHSGF4DqbaxSdivfex9qKZkLCUUUJDbUnoSe06DGEaFgyu8rWKmGf8jjroAbxav vPYeCIG8bhX7yln84NRbSTNlksTAVsFxqKsRX4E34jBwTROm5alXwyN8M3YDMrCGLywHHrghHtR9 hZcMjwrIHN7CQwk1CstABxYIW0au08TqX7gpJBRq2bEoZtp0OMmYDnuLofc/soYyNneQOd7YSfvf RnG13Fci0AX9IeO2BgmGeV87zmvQAZOKHUjhHg== ) ;; 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 c.root-servers.net for edu/DNSKEY
	Received 1162 bytes from 192.33.4.12
	;; Response received from 192.33.4.12 (1162 octets) ;; HEADER SECTION ;; id = 26070 ;; 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) ;; edu. IN DNSKEY ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (15 records) edu. 172800 IN NS g.edu-servers.net. edu. 172800 IN NS e.edu-servers.net. edu. 172800 IN NS h.edu-servers.net. edu. 172800 IN NS b.edu-servers.net. edu. 172800 IN NS d.edu-servers.net. edu. 172800 IN NS m.edu-servers.net. edu. 172800 IN NS l.edu-servers.net. edu. 172800 IN NS k.edu-servers.net. edu. 172800 IN NS j.edu-servers.net. edu. 172800 IN NS f.edu-servers.net. edu. 172800 IN NS c.edu-servers.net. edu. 172800 IN NS i.edu-servers.net. edu. 172800 IN NS a.edu-servers.net. edu. 86400 IN DS ( 28065 8 2 4172496cde85534e51129040355bd04b1fcfebae996dfdde652006f6f8b2ce76 ) edu. 86400 IN RRSIG ( DS 8 1 86400 20220825050000 20220812040000 20826 . itxV/CfWsbXmqLn2+0mLtr10NyaSFqWCcymWa8I7tkc+NS+vjq8ZG3r12AnbUjdF4KWaqpPK/ySh l7v3HVhS7VKjaNHSGF4DqbaxSdivfex9qKZkLCUUUJDbUnoSe06DGEaFgyu8rWKmGf8jjroAbxav vPYeCIG8bhX7yln84NRbSTNlksTAVsFxqKsRX4E34jBwTROm5alXwyN8M3YDMrCGLywHHrghHtR9 hZcMjwrIHN7CQwk1CstABxYIW0au08TqX7gpJBRq2bEoZtp0OMmYDnuLofc/soYyNneQOd7YSfvf RnG13Fci0AX9IeO2BgmGeV87zmvQAZOKHUjhHg== ) ;; 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:
	Found child zone edu

edu

	Checking DS between . and edu
	Query to g.root-servers.net for edu/DS
	Received 367 bytes from 192.112.36.4
	;; Response received from 192.112.36.4 (367 octets) ;; HEADER SECTION ;; id = 16570 ;; 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: 1232 ;; 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 20220825050000 20220812040000 20826 . itxV/CfWsbXmqLn2+0mLtr10NyaSFqWCcymWa8I7tkc+NS+vjq8ZG3r12AnbUjdF4KWaqpPK/ySh l7v3HVhS7VKjaNHSGF4DqbaxSdivfex9qKZkLCUUUJDbUnoSe06DGEaFgyu8rWKmGf8jjroAbxav vPYeCIG8bhX7yln84NRbSTNlksTAVsFxqKsRX4E34jBwTROm5alXwyN8M3YDMrCGLywHHrghHtR9 hZcMjwrIHN7CQwk1CstABxYIW0au08TqX7gpJBRq2bEoZtp0OMmYDnuLofc/soYyNneQOd7YSfvf RnG13Fci0AX9IeO2BgmGeV87zmvQAZOKHUjhHg== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; 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 20220825050000 20220812040000 20826 . itxV/CfWsbXmqLn2+0mLtr10NyaSFqWCcymWa8I7tkc+NS+vjq8ZG3r12AnbUjdF4KWaqpPK/ySh l7v3HVhS7VKjaNHSGF4DqbaxSdivfex9qKZkLCUUUJDbUnoSe06DGEaFgyu8rWKmGf8jjroAbxav vPYeCIG8bhX7yln84NRbSTNlksTAVsFxqKsRX4E34jBwTROm5alXwyN8M3YDMrCGLywHHrghHtR9 hZcMjwrIHN7CQwk1CstABxYIW0au08TqX7gpJBRq2bEoZtp0OMmYDnuLofc/soYyNneQOd7YSfvf RnG13Fci0AX9IeO2BgmGeV87zmvQAZOKHUjhHg== )`
	RRSIG=20826 and DNSKEY=20826 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 c.edu-servers.net for edu/DNSKEY
	Received 775 bytes from 192.26.92.30
	;; Response received from 192.26.92.30 (775 octets) ;; HEADER SECTION ;; id = 29365 ;; 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 AQOnAazLOMlaUkbkVqMq8wuv9vY54uN08x5hfAhJPDW4pPf4NbKfeECcf4z+JF1EKe6289nOqkyj zoWGnnraW312ASeDVCFu9s8jhBXyVjbYtrIGrIIWragQLx0S5mg2L72LmzVb2wrom4wmCbbSQaH4 lWqYLScYpABiTacZTg+Hv61i/8m+ihrzfG2Z2mZpyFWf4EXyumoZZFJoG+uC49px ) ; Key ID = 18290 edu. 86400 IN RRSIG ( DNSKEY 8 1 86400 20220817185303 20220802184803 28065 edu. TR/zAsKl9KNpf7SyUZNBwc/f7i0N6b9owy/2bFsIXy0EhxgRuXixwnR7eKLVG0E3qZrP3cfm1gjX pMYpbBIBJAv3LRMzePM+DzZyciUWA27grzFjjBDwJ78L71iqGQDhFRzNd82Rk/iHcAZ8ER6Bre8g sjGsy4CR+qHrlDtNR4ZdFeaoKBqzSy7xgB4mKSwNCby6sPJY4IaOU4zA9461L3OmikNy02PYN29W mcNcMmJ3QfGLiQ6MPiQVG+MoC1JCyJ+F0gOo1QCU12wbdUbmD0EIkt2GvZFqd/6r5g2oXROw7XrU j/xbNGGsC8H9H/04A9oMtjAhsX+tJSQoq418qg== ) ;; 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 AQOnAazLOMlaUkbkVqMq8wuv9vY54uN08x5hfAhJPDW4pPf4NbKfeECcf4z+JF1EKe6289nOqkyj zoWGnnraW312ASeDVCFu9s8jhBXyVjbYtrIGrIIWragQLx0S5mg2L72LmzVb2wrom4wmCbbSQaH4 lWqYLScYpABiTacZTg+Hv61i/8m+ihrzfG2Z2mZpyFWf4EXyumoZZFJoG+uC49px ) ; Key ID = 18290`
	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 20220817185303 20220802184803 28065 edu. TR/zAsKl9KNpf7SyUZNBwc/f7i0N6b9owy/2bFsIXy0EhxgRuXixwnR7eKLVG0E3qZrP3cfm1gjX pMYpbBIBJAv3LRMzePM+DzZyciUWA27grzFjjBDwJ78L71iqGQDhFRzNd82Rk/iHcAZ8ER6Bre8g sjGsy4CR+qHrlDtNR4ZdFeaoKBqzSy7xgB4mKSwNCby6sPJY4IaOU4zA9461L3OmikNy02PYN29W mcNcMmJ3QfGLiQ6MPiQVG+MoC1JCyJ+F0gOo1QCU12wbdUbmD0EIkt2GvZFqd/6r5g2oXROw7XrU j/xbNGGsC8H9H/04A9oMtjAhsX+tJSQoq418qg== )`
	RRSIG=28065 and DNSKEY=28065/SEP verifies the DNSKEY RRset
	DNSKEY=18290 is now in the chain-of-trust
	Query to h.edu-servers.net for columbia.edu/A
	Received 796 bytes from 192.54.112.30
	;; Response received from 192.54.112.30 (796 octets) ;; HEADER SECTION ;; id = 46775 ;; 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 20220817061105 20220810050105 18290 edu. BfPDjqURHUXJ3REwIFhbKNuPppqq1cLH7JqV6fqAWmg5tgjsztZgI2KnHH5dKH2xEQOXBXGt5gWu XRwtTOisJr3DZ/gMjbbJa7v2N7ErkgTpl/EpNSbj/oxEQ+rKqkB849R9yPECOo3mLYpN2GMxQqgR PxIJz437xAN6/ktYp5fJTCUTB1AIX1KlK/XK0CrGxDk9KGKDikDV9zwjOzYB1w== ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN NSEC3 ( 1 1 0 - 84r3vll0i0qrhsi5n9sj2knksff0jnmp NS DS RRSIG ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN RRSIG ( NSEC3 8 2 86400 20220819061029 20220812050029 18290 edu. d8OTxTgSRQpEqLK1oOi19n+sXXU8GCj0WaaJX0msdrO9jbC9T6m6MjLdRbMl/ZspIBq/2ciYu0iL j8IHtsO4EBvn5DG3BrtB5e3Y//y/eF/TwZlfxA1X2fa3uwej5Nrou7kgdmd8VvjgJw7Vlx96AtVJ 8siurUi5Qw27ongYJgJIBSxPds81xtpT5soBlfQ1VXcfzT2cgY3+Q6+soLZT1w== ) ;; 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 d.edu-servers.net for columbia.edu/DNSKEY
	Received 796 bytes from 192.31.80.30
	;; Response received from 192.31.80.30 (796 octets) ;; HEADER SECTION ;; id = 57608 ;; 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 20220817061105 20220810050105 18290 edu. BfPDjqURHUXJ3REwIFhbKNuPppqq1cLH7JqV6fqAWmg5tgjsztZgI2KnHH5dKH2xEQOXBXGt5gWu XRwtTOisJr3DZ/gMjbbJa7v2N7ErkgTpl/EpNSbj/oxEQ+rKqkB849R9yPECOo3mLYpN2GMxQqgR PxIJz437xAN6/ktYp5fJTCUTB1AIX1KlK/XK0CrGxDk9KGKDikDV9zwjOzYB1w== ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN NSEC3 ( 1 1 0 - 84r3vll0i0qrhsi5n9sj2knksff0jnmp NS DS RRSIG ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN RRSIG ( NSEC3 8 2 86400 20220819061029 20220812050029 18290 edu. d8OTxTgSRQpEqLK1oOi19n+sXXU8GCj0WaaJX0msdrO9jbC9T6m6MjLdRbMl/ZspIBq/2ciYu0iL j8IHtsO4EBvn5DG3BrtB5e3Y//y/eF/TwZlfxA1X2fa3uwej5Nrou7kgdmd8VvjgJw7Vlx96AtVJ 8siurUi5Qw27ongYJgJIBSxPds81xtpT5soBlfQ1VXcfzT2cgY3+Q6+soLZT1w== ) ;; 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 g.edu-servers.net for columbia.edu/DS
	Received 860 bytes from 192.42.93.30
	;; Response received from 192.42.93.30 (860 octets) ;; HEADER SECTION ;; id = 12274 ;; 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 20220817061105 20220810050105 18290 edu. BfPDjqURHUXJ3REwIFhbKNuPppqq1cLH7JqV6fqAWmg5tgjsztZgI2KnHH5dKH2xEQOXBXGt5gWu XRwtTOisJr3DZ/gMjbbJa7v2N7ErkgTpl/EpNSbj/oxEQ+rKqkB849R9yPECOo3mLYpN2GMxQqgR PxIJz437xAN6/ktYp5fJTCUTB1AIX1KlK/XK0CrGxDk9KGKDikDV9zwjOzYB1w== ) edu. 900 IN SOA ( a.edu-servers.net. nstld.verisign-grs.com. 1660302592 ;serial 1800 ;refresh 900 ;retry 604800 ;expire 86400 ;minimum ) edu. 900 IN RRSIG ( SOA 8 1 900 20220819110952 20220812095952 18290 edu. h15bbdSOLCjLOoiSj0MuRLVM0FVv7CCam42LAwvSxMRtHLPfG6BuQoK/m6ELHzZr9EWVl9308yaI 4tqViDtRpZF6dwWBBj1VS+kXd1i6zQWVHqS0OzsLIounDweYm6xasFFdeW71vgc3msVRwDrMuXSC 7P1ZY+ZFHSxvGoKdtMn+sJCysFQxclpf0tUzLsBPfcp/HBB2fbZJ+v3j2Cw3UQ== ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN NSEC3 ( 1 1 0 - 84r3vll0i0qrhsi5n9sj2knksff0jnmp NS DS RRSIG ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN RRSIG ( NSEC3 8 2 86400 20220819061029 20220812050029 18290 edu. d8OTxTgSRQpEqLK1oOi19n+sXXU8GCj0WaaJX0msdrO9jbC9T6m6MjLdRbMl/ZspIBq/2ciYu0iL j8IHtsO4EBvn5DG3BrtB5e3Y//y/eF/TwZlfxA1X2fa3uwej5Nrou7kgdmd8VvjgJw7Vlx96AtVJ 8siurUi5Qw27ongYJgJIBSxPds81xtpT5soBlfQ1VXcfzT2cgY3+Q6+soLZT1w== ) ;; 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 auth4.dns.cogentco.com for columbia.edu/DNSKEY
	Received 96 bytes from 80.245.32.74
	;; Response received from 80.245.32.74 (96 octets) ;; HEADER SECTION ;; id = 683 ;; 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. 72949 ;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 = 24048 ;; 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 dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth1.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 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:
	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 = 17663 ;; 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. 72949 ;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 auth2.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 ext-ns1.columbia.edu. columbia.edu. 3600 IN NS auth5.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 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 = 47864 ;; 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: 4096 ;; 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. 72949 ;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 ext-ns1.columbia.edu. columbia.edu. 3600 IN NS auth4.dns.cogentco.com. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. 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. ;; 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: 4096 ;; 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 = 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 = 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. 72949 ;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 = 26951 ;; 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. 72949 ;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 = 5243 ;; 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. 72949 ;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 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 dns2.itd.umich.edu. 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 = 7956 ;; 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. 72949 ;serial 3600 ;refresh 1800 ;retry 2419200 ;expire 300 ;minimum ) ;; AUTHORITY SECTION (7 records) columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth5.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 auth4.dns.cogentco.com. 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:
	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 = 7953 ;; 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 auth5.dns.cogentco.com. columbia.edu. 3600 IN NS auth1.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 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 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 = 36306 ;; 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: 4096 ;; 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 auth5.dns.cogentco.com. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. 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. ;; 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: 4096 ;; 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 = 4839 ;; 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: 4096 ;; 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 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 auth4.dns.cogentco.com. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. columbia.edu. 3600 IN NS dns2.itd.umich.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: 4096 ;; 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 = 51103 ;; 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 auth4.dns.cogentco.com. 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. 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 = 43163 ;; 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 auth5.dns.cogentco.com. columbia.edu. 3600 IN NS auth2.dns.cogentco.com. columbia.edu. 3600 IN NS dns2.itd.umich.edu. columbia.edu. 3600 IN NS ns1.lse.ac.uk. 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. ;; 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 = 47541 ;; 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 = 35024 ;; 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 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 = 16315 ;; 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 auth5.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 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 = 61515 ;; 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 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 ns1.lse.ac.uk. columbia.edu. 3600 IN NS auth2.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 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 = 33617 ;; 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 dns2.itd.umich.edu. 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 auth5.dns.cogentco.com. 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:
	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 = 32307 ;; 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 ext-ns1.columbia.edu. 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 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:
	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 = 54641 ;; 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 = 61549 ;; 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

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