DNSSEC Analyzer - columbia.edu

Domain Name:

Time: 2023-10-02 20:26:47 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 a.root-servers.net for ./DNSKEY
	Received 1139 bytes from 198.41.0.4
	;; Response received from 198.41.0.4 (1139 octets) ;; HEADER SECTION ;; id = 26379 ;; 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: 4096 ;; option: ;; QUESTION SECTION (1 record) ;; . IN DNSKEY ;; ANSWER SECTION (4 records) . 172800 IN DNSKEY ( 256 3 8 AwEAAddS95RV5uUtkUCN7vyvpb0kDZgmtXwN5Sj/d08+X7ND2sgWBabKnFhftrOsSx9DUhKR3gpM PIxac84Nou8Wzkiu2A/sTzP1F6KpCL8epgemdlZVd1ATHEjpB0KHIQmDjSEO/frGgi8ijQ2vDF3A MSrUwH7qntL1E5ufPHGKRM+agGghcAYfJHJN1dw7Ki3Fo22RDB3VZBxU9yJ3vl/T4hngeL7zK84v gl62tlJJw1rK5S/3U4p/bZarjtMFOHDfh0DEj1ywtRpkpPnge03gmINoa2tz+Kff67kbQb0NhHJY zPRpViaMEWZI9pgGH9ZyuFdNrNRx68XSiO7sya7/i+c= ) ; Key ID = 46780 . 172800 IN DNSKEY ( 256 3 8 AwEAAcEtWatIO3exfN3A+WnZl7AVEBA3crRrrwKTfnmcdLt79C3DCOF1JX5zb4s84v0OxwlOVg+T R8VpkuYynMp3PQXLomLxe7j7PlxqEBo1LQaWfqyymCuF7rKebTLB5yZcr8/QUPwk/weLyguX6iVN DjIZOmeMqPkGJtDFp+EUfKgOa8AulKPLtsUL1W+1FT8sqroSxKXVXnhkEZN1O1zBxTG/z9xjwiPc d3//LSPUpEC9+rU2XIuCJq8nwAwJ7W6Rc49RxUT0Svc57HKqHjNuapvG0PCYh3bXCQzb7mb2pNwu erMFTzP5iEzXWZD7izLg9j3wEJ2Ia/WIEts/Tp9GIQM= ) ; Key ID = 11019 . 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 20231022000000 20231001000000 20326 . WQ+tzT8gKOYmaX8NLjusFmLz4zLVeeY3hAmZUKxl7/6LxY3lJh6qRIgLNBN7EkAhyTbjVVryUhEY ExIX/luU4fGmUCyxhYZwF+2bCv3uT4DaI8ssk3USVFFOR9wTkggzVYrtr2UH1PFmQ5hE//aiPfsy NEAisEXMZX3nUT/aCd5oZ6LlH53Nz9CZOa0vNHTu6erIg+mhAOzshcG9/BIfCrYJ1H5D5serTV1x t3Tvw2+KX6w3dG1Nb6vVNpe9Yj7Eb0B85FiqzoAM5jcwHiY+rovSbdVpmD3mIHXZ65wCiBGa6vQS nJQXwchjWQPnSDFLGuZh3dt89C65erw9grHteQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4096 ;; option:
	Found 3 DNSKEY records for .
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAddS95RV5uUtkUCN7vyvpb0kDZgmtXwN5Sj/d08+X7ND2sgWBabKnFhftrOsSx9DUhKR3gpM PIxac84Nou8Wzkiu2A/sTzP1F6KpCL8epgemdlZVd1ATHEjpB0KHIQmDjSEO/frGgi8ijQ2vDF3A MSrUwH7qntL1E5ufPHGKRM+agGghcAYfJHJN1dw7Ki3Fo22RDB3VZBxU9yJ3vl/T4hngeL7zK84v gl62tlJJw1rK5S/3U4p/bZarjtMFOHDfh0DEj1ywtRpkpPnge03gmINoa2tz+Kff67kbQb0NhHJY zPRpViaMEWZI9pgGH9ZyuFdNrNRx68XSiO7sya7/i+c= ) ; Key ID = 46780`
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAcEtWatIO3exfN3A+WnZl7AVEBA3crRrrwKTfnmcdLt79C3DCOF1JX5zb4s84v0OxwlOVg+T R8VpkuYynMp3PQXLomLxe7j7PlxqEBo1LQaWfqyymCuF7rKebTLB5yZcr8/QUPwk/weLyguX6iVN DjIZOmeMqPkGJtDFp+EUfKgOa8AulKPLtsUL1W+1FT8sqroSxKXVXnhkEZN1O1zBxTG/z9xjwiPc d3//LSPUpEC9+rU2XIuCJq8nwAwJ7W6Rc49RxUT0Svc57HKqHjNuapvG0PCYh3bXCQzb7mb2pNwu erMFTzP5iEzXWZD7izLg9j3wEJ2Ia/WIEts/Tp9GIQM= ) ; Key ID = 11019`
	`. 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 20231022000000 20231001000000 20326 . WQ+tzT8gKOYmaX8NLjusFmLz4zLVeeY3hAmZUKxl7/6LxY3lJh6qRIgLNBN7EkAhyTbjVVryUhEY ExIX/luU4fGmUCyxhYZwF+2bCv3uT4DaI8ssk3USVFFOR9wTkggzVYrtr2UH1PFmQ5hE//aiPfsy NEAisEXMZX3nUT/aCd5oZ6LlH53Nz9CZOa0vNHTu6erIg+mhAOzshcG9/BIfCrYJ1H5D5serTV1x t3Tvw2+KX6w3dG1Nb6vVNpe9Yj7Eb0B85FiqzoAM5jcwHiY+rovSbdVpmD3mIHXZ65wCiBGa6vQS nJQXwchjWQPnSDFLGuZh3dt89C65erw9grHteQ== )`
	RRSIG=20326 and DNSKEY=20326/SEP verifies the DNSKEY RRset
	DNSKEY=46780 is now in the chain-of-trust
	DNSKEY=11019 is now in the chain-of-trust
	Query to b.root-servers.net for columbia.edu/A
	Received 1171 bytes from 199.9.14.201
	;; Response received from 199.9.14.201 (1171 octets) ;; HEADER SECTION ;; id = 1474 ;; 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 a.edu-servers.net. edu. 172800 IN NS b.edu-servers.net. edu. 172800 IN NS c.edu-servers.net. edu. 172800 IN NS d.edu-servers.net. edu. 172800 IN NS e.edu-servers.net. edu. 172800 IN NS f.edu-servers.net. edu. 172800 IN NS g.edu-servers.net. edu. 172800 IN NS h.edu-servers.net. edu. 172800 IN NS i.edu-servers.net. edu. 172800 IN NS j.edu-servers.net. edu. 172800 IN NS k.edu-servers.net. edu. 172800 IN NS l.edu-servers.net. edu. 172800 IN NS m.edu-servers.net. edu. 86400 IN DS ( 35663 13 2 a2e1614291831a4746b5ac52b4b345357687271e85353082741f1cf3d06a4c1d ) edu. 86400 IN RRSIG ( DS 8 1 86400 20231015170000 20231002160000 46780 . XpFqO65vrlJ0MO497d6mSDYBqP0nZaEUKksjGze+2ZDQfDj5pA2pzwuy1darUUMNDiS+/MAZwMMH dSNNPy/gpMwMoiHBKf7wCFD2tbQVIif8yagwW9Je/+61tFUPr5uy7fqoJ1mX6HGqgKabdCeUBlLZ FbNlWENctVmsZR6POQdUUhf/lJFqSpdmIpCf8vMWqkUdMdUYW5VALPAa9qDmwZUlKvTy5pa8iI4+ Zw5BCms3SVWnRc8rGZIzvrqk4zbahznhZpvA2tGYYn04mopU+ipWRZ5ZrEFlaTD8caWKjFkgG6Q3 nxlTMDAR7p4pEcCWpiah601cXhM1yQyHpLyIyw== ) ;; ADDITIONAL SECTION (27 records) a.edu-servers.net. 172800 IN A 192.5.6.30 a.edu-servers.net. 172800 IN AAAA 2001:503:a83e::2:30 b.edu-servers.net. 172800 IN A 192.33.14.30 b.edu-servers.net. 172800 IN AAAA 2001:503:231d::2:30 c.edu-servers.net. 172800 IN A 192.26.92.30 c.edu-servers.net. 172800 IN AAAA 2001:503:83eb::30 d.edu-servers.net. 172800 IN A 192.31.80.30 d.edu-servers.net. 172800 IN AAAA 2001:500:856e::30 e.edu-servers.net. 172800 IN A 192.12.94.30 e.edu-servers.net. 172800 IN AAAA 2001:502:1ca1::30 f.edu-servers.net. 172800 IN A 192.35.51.30 f.edu-servers.net. 172800 IN AAAA 2001:503:d414::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 i.edu-servers.net. 172800 IN A 192.43.172.30 i.edu-servers.net. 172800 IN AAAA 2001:503:39c1::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 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: 1232 ;; option:
	Query to i.root-servers.net for edu/DNSKEY
	Received 1162 bytes from 192.36.148.17
	;; Response received from 192.36.148.17 (1162 octets) ;; HEADER SECTION ;; id = 31751 ;; 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 k.edu-servers.net. edu. 172800 IN NS g.edu-servers.net. edu. 172800 IN NS i.edu-servers.net. edu. 172800 IN NS a.edu-servers.net. edu. 172800 IN NS b.edu-servers.net. edu. 172800 IN NS d.edu-servers.net. edu. 172800 IN NS l.edu-servers.net. edu. 172800 IN NS m.edu-servers.net. edu. 172800 IN NS f.edu-servers.net. edu. 172800 IN NS c.edu-servers.net. edu. 172800 IN NS h.edu-servers.net. edu. 172800 IN NS j.edu-servers.net. edu. 172800 IN NS e.edu-servers.net. edu. 86400 IN DS ( 35663 13 2 a2e1614291831a4746b5ac52b4b345357687271e85353082741f1cf3d06a4c1d ) edu. 86400 IN RRSIG ( DS 8 1 86400 20231015170000 20231002160000 46780 . XpFqO65vrlJ0MO497d6mSDYBqP0nZaEUKksjGze+2ZDQfDj5pA2pzwuy1darUUMNDiS+/MAZwMMH dSNNPy/gpMwMoiHBKf7wCFD2tbQVIif8yagwW9Je/+61tFUPr5uy7fqoJ1mX6HGqgKabdCeUBlLZ FbNlWENctVmsZR6POQdUUhf/lJFqSpdmIpCf8vMWqkUdMdUYW5VALPAa9qDmwZUlKvTy5pa8iI4+ Zw5BCms3SVWnRc8rGZIzvrqk4zbahznhZpvA2tGYYn04mopU+ipWRZ5ZrEFlaTD8caWKjFkgG6Q3 nxlTMDAR7p4pEcCWpiah601cXhM1yQyHpLyIyw== ) ;; 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 j.root-servers.net for edu/DS
	Received 367 bytes from 192.58.128.30
	;; Response received from 192.58.128.30 (367 octets) ;; HEADER SECTION ;; id = 36591 ;; 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 ( 35663 13 2 a2e1614291831a4746b5ac52b4b345357687271e85353082741f1cf3d06a4c1d ) edu. 86400 IN RRSIG ( DS 8 1 86400 20231015170000 20231002160000 46780 . XpFqO65vrlJ0MO497d6mSDYBqP0nZaEUKksjGze+2ZDQfDj5pA2pzwuy1darUUMNDiS+/MAZwMMH dSNNPy/gpMwMoiHBKf7wCFD2tbQVIif8yagwW9Je/+61tFUPr5uy7fqoJ1mX6HGqgKabdCeUBlLZ FbNlWENctVmsZR6POQdUUhf/lJFqSpdmIpCf8vMWqkUdMdUYW5VALPAa9qDmwZUlKvTy5pa8iI4+ Zw5BCms3SVWnRc8rGZIzvrqk4zbahznhZpvA2tGYYn04mopU+ipWRZ5ZrEFlaTD8caWKjFkgG6Q3 nxlTMDAR7p4pEcCWpiah601cXhM1yQyHpLyIyw== ) ;; 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=35663/SHA-256 has algorithm ECDSAP256SHA256
	Found 1 RRSIGs over DS RRset
	`edu. 86400 IN RRSIG ( DS 8 1 86400 20231015170000 20231002160000 46780 . XpFqO65vrlJ0MO497d6mSDYBqP0nZaEUKksjGze+2ZDQfDj5pA2pzwuy1darUUMNDiS+/MAZwMMH dSNNPy/gpMwMoiHBKf7wCFD2tbQVIif8yagwW9Je/+61tFUPr5uy7fqoJ1mX6HGqgKabdCeUBlLZ FbNlWENctVmsZR6POQdUUhf/lJFqSpdmIpCf8vMWqkUdMdUYW5VALPAa9qDmwZUlKvTy5pa8iI4+ Zw5BCms3SVWnRc8rGZIzvrqk4zbahznhZpvA2tGYYn04mopU+ipWRZ5ZrEFlaTD8caWKjFkgG6Q3 nxlTMDAR7p4pEcCWpiah601cXhM1yQyHpLyIyw== )`
	RRSIG=46780 and DNSKEY=46780 verifies the DS RRset
	DS=35663/SHA-256 is now in the chain-of-trust
	`edu. 86400 IN DS ( 35663 13 2 a2e1614291831a4746b5ac52b4b345357687271e85353082741f1cf3d06a4c1d )`
	Query to g.edu-servers.net for edu/DNSKEY
	Received 291 bytes from 192.42.93.30
	;; Response received from 192.42.93.30 (291 octets) ;; HEADER SECTION ;; id = 24215 ;; 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 13 vqk4cwmCpZkXat25PaOVt3RPYDOmCr8B4D1IynrqSqzs+BeCYI6pnBNRUD9BgfqbxZHyfyDz6vbv 8KQaT7maRw== ) ; Key ID = 35663 edu. 86400 IN DNSKEY ( 256 3 13 2em66utnep4mPOm87jDtlUldzyNMAGSYtTla108GdiGD1paUZ9tJsWxIHQLS9yyIHYe7pgqqo1iR njQ0C+PsWQ== ) ; Key ID = 8957 edu. 86400 IN RRSIG ( DNSKEY 13 1 86400 20231013151114 20230928150614 35663 edu. SGWbD9CAcT6GOu4kmuaB0CS4iOfg6PStv7OwQwRSG87Dq59wehHW5bWZvXLaOBZxr4/18DcQ7jvu egrNEIn/Kw== ) ;; 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 13 vqk4cwmCpZkXat25PaOVt3RPYDOmCr8B4D1IynrqSqzs+BeCYI6pnBNRUD9BgfqbxZHyfyDz6vbv 8KQaT7maRw== ) ; Key ID = 35663`
	`edu. 86400 IN DNSKEY ( 256 3 13 2em66utnep4mPOm87jDtlUldzyNMAGSYtTla108GdiGD1paUZ9tJsWxIHQLS9yyIHYe7pgqqo1iR njQ0C+PsWQ== ) ; Key ID = 8957`
	DNSKEY=35663/SEP is now in the chain-of-trust
	DS=35663/SHA-256 verifies DNSKEY=35663/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`edu. 86400 IN RRSIG ( DNSKEY 13 1 86400 20231013151114 20230928150614 35663 edu. SGWbD9CAcT6GOu4kmuaB0CS4iOfg6PStv7OwQwRSG87Dq59wehHW5bWZvXLaOBZxr4/18DcQ7jvu egrNEIn/Kw== )`
	RRSIG=35663 and DNSKEY=35663/SEP verifies the DNSKEY RRset
	DNSKEY=8957 is now in the chain-of-trust
	Query to c.edu-servers.net for columbia.edu/A
	Received 604 bytes from 192.26.92.30
	;; Response received from 192.26.92.30 (604 octets) ;; HEADER SECTION ;; id = 37059 ;; 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 13 2 86400 20231007070709 20230930055709 8957 edu. hmToUEDVThfCwe8aTTOYB7VV7HtP3+TcuuRg4uKgCvovGnU74CL02GtvDZ3HYz/yHdCE2cxIkO93 Enm8rWAxOA== ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN NSEC3 ( 1 1 0 - 84r3vll0i0qrhsi5n9sj2knksff0jnmp NS DS RRSIG ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN RRSIG ( NSEC3 13 2 86400 20231009071222 20231002060222 8957 edu. LYRlXLgdtMoN5dirdFYzRsdVd6TJeKGvBYsPXh2h8fU8ssvRIX5wO6GkKoMW4f3VtOIcUfEr3IlG f8NuW0OiUQ== ) ;; 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 c.edu-servers.net for columbia.edu/DNSKEY
	Received 604 bytes from 192.26.92.30
	;; Response received from 192.26.92.30 (604 octets) ;; HEADER SECTION ;; id = 25200 ;; 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 13 2 86400 20231007070709 20230930055709 8957 edu. hmToUEDVThfCwe8aTTOYB7VV7HtP3+TcuuRg4uKgCvovGnU74CL02GtvDZ3HYz/yHdCE2cxIkO93 Enm8rWAxOA== ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN NSEC3 ( 1 1 0 - 84r3vll0i0qrhsi5n9sj2knksff0jnmp NS DS RRSIG ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN RRSIG ( NSEC3 13 2 86400 20231009071222 20231002060222 8957 edu. LYRlXLgdtMoN5dirdFYzRsdVd6TJeKGvBYsPXh2h8fU8ssvRIX5wO6GkKoMW4f3VtOIcUfEr3IlG f8NuW0OiUQ== ) ;; 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 l.edu-servers.net for columbia.edu/DS
	Received 572 bytes from 192.41.162.30
	;; Response received from 192.41.162.30 (572 octets) ;; HEADER SECTION ;; id = 38127 ;; 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 13 2 86400 20231007070709 20230930055709 8957 edu. hmToUEDVThfCwe8aTTOYB7VV7HtP3+TcuuRg4uKgCvovGnU74CL02GtvDZ3HYz/yHdCE2cxIkO93 Enm8rWAxOA== ) edu. 900 IN SOA ( a.edu-servers.net. nstld.verisign-grs.com. 1696278387 ;serial 1800 ;refresh 900 ;retry 604800 ;expire 86400 ;minimum ) edu. 900 IN RRSIG ( SOA 13 1 900 20231009202627 20231002191627 8957 edu. Cz8SrdzDq3UEDNbsnwKaQKdEPTZWKJGkPEJkPIy5WfqvahlmueGoKkZNnduibZUzSN3//h9NIm05 hZSAIboSYg== ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN NSEC3 ( 1 1 0 - 84r3vll0i0qrhsi5n9sj2knksff0jnmp NS DS RRSIG ) 7U9I8VPKTD9O52GUE9F7VMSHF2O27STK.edu. 86400 IN RRSIG ( NSEC3 13 2 86400 20231009071222 20231002060222 8957 edu. LYRlXLgdtMoN5dirdFYzRsdVd6TJeKGvBYsPXh2h8fU8ssvRIX5wO6GkKoMW4f3VtOIcUfEr3IlG f8NuW0OiUQ== ) ;; 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 ext-ns1.columbia.edu for columbia.edu/DNSKEY
	Received 96 bytes from 128.59.1.1
	;; Response received from 128.59.1.1 (96 octets) ;; HEADER SECTION ;; id = 39526 ;; 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 = 0 ;; EDNS version 0 ;; flags: 0000 ;; rcode: NOERROR ;; size: 1220 ;; 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. 79659 ;serial 3600 ;refresh 1800 ;retry 2419200 ;expire 300 ;minimum ) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 0000 ;; rcode: NOERROR ;; size: 1220 ;; option:
	No DNSKEY records found
	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 = 19165 ;; 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 auth1.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 auth2.dns.cogentco.com. columbia.edu. 3600 IN NS auth5.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. columbia.edu. 3600 IN NS auth4.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 2001:18d8:1::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 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 = 48986 ;; 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. 79659 ;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 ns1.lse.ac.uk. columbia.edu. 3600 IN NS auth5.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 (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 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 = 4677 ;; 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. 79659 ;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::35 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8:1::1:1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4000 ;; option:
	Query to auth1.dns.cogentco.com for columbia.edu/SOA
	Received 337 bytes from 66.28.0.14
	;; Response received from 66.28.0.14 (337 octets) ;; HEADER SECTION ;; id = 64408 ;; 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. 79659 ;serial 3600 ;refresh 1800 ;retry 2419200 ;expire 300 ;minimum ) ;; AUTHORITY SECTION (7 records) 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 ext-ns1.columbia.edu. columbia.edu. 3600 IN NS auth5.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:
	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 = 37341 ;; 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. 79659 ;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 = 47530 ;; 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. 79659 ;serial 3600 ;refresh 1800 ;retry 2419200 ;expire 300 ;minimum ) ;; AUTHORITY SECTION (7 records) 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 auth5.dns.cogentco.com. 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. ;; 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 = 31557 ;; 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. 79659 ;serial 3600 ;refresh 1800 ;retry 2419200 ;expire 300 ;minimum ) ;; AUTHORITY SECTION (7 records) 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. 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:
	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 = 61166 ;; 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 auth4.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 auth1.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 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 2001:18d8:1::1:1 ext-ns1.columbia.edu. 3600 IN AAAA 2001:18d8::35 ;; 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 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 = 38435 ;; 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 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 auth5.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:
	auth1.dns.cogentco.com is authoritative for columbia.edu
	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 = 82 ;; 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 auth1.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. ;; 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 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 = 33417 ;; 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 auth1.dns.cogentco.com. columbia.edu. 3600 IN NS ext-ns1.columbia.edu. columbia.edu. 3600 IN NS ns1.lse.ac.uk. columbia.edu. 3600 IN NS auth2.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:
	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 = 38121 ;; 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 auth1.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 auth5.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 (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 = 53421 ;; 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 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 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:
	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 = 46321 ;; 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 dns2.itd.umich.edu. columbia.edu. 3600 IN NS auth1.dns.cogentco.com. 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. ;; 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 = 23232 ;; 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 = 51209 ;; 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 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 = 42994 ;; 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 auth1.dns.cogentco.com. 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 ns1.lse.ac.uk. 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:
	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 = 51152 ;; 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 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 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:
	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 = 61025 ;; 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 = 23871 ;; 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

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