DNSSEC Debugger

Back to Verisign Labs Tools

Domain Name:

Detail: more(+) / less(-)

Time: 2026-04-21 13:32:30 UTC

Analyzing DNSSEC problems for NLM.GOV

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

DS=38696/SHA-256 is now in the chain-of-trust

	Checking DS between Trust Anchor and .
	`. IN DS ( 20326 8 2 e06d44b80b8f1d39a95c0b0d7c65d08458e880409bbc683457104237c7f8ec8d )`
	`. IN DS ( 38696 8 2 683d2d0acb8c9b712a1948b27f741219298d0a450d612c483af444a4c0fb2b16 )`
	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 = 8626 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 4 ;; nscount = 0 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1450, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; . IN DNSKEY ;; ANSWER SECTION (4 records) . 172800 IN DNSKEY ( 256 3 8 AwEAAb5dDYffpgAJ8VUGLwQtWXPlQWsjIFJtCM00/XaKU+8ln+ofah3q2KxEIjvzQg+nqdxRj+8e mtPne1mtYcbFWP4Q9E+DniOJLK09R05FuzvGbrG7DDdRDUX/cedFdV7O8pFEAYpJqYNR9BCTIAV9 73DO2biauKSA31b7I2lK/woxoR1tf5cqJ4SMbJUviuHicAEoUi2ATswloZNWd5T5thmEFZnxFx7D 5UgKCY7oflS7+GU7dNJwEtmFnWYVETHN0kHXVz6aguouaAZp706YXNIoR/iTgQhmsR7XX+wL0Z8Q M2LxQIyU6vRZ06IyuJMGRMiwkSuGElbumyBt12JZbrU= ) ; keytag 54393 . 172800 IN DNSKEY ( 257 3 8 AwEAAaz/tAm8yTn4Mfeh5eyI96WSVexTBAvkMgJzkKTOiW1vkIbzxeF3+/4RgWOq7HrxRixHlFlE xOLAJr5emLvN7SWXgnLh4+B5xQlNVz8Og8kvArMtNROxVQuCaSnIDdD5LKyWbRd2n9WGe2R8PzgC mr3EgVLrjyBxWezF0jLHwVN8efS3rCj/EWgvIWgb9tarpVUDK/b58Da+sqqls3eNbuv7pr+eoZG+ SrDK6nWeL3c6H5Apxz7LjVc1uTIdsIXxuOLYA4/ilBmSVIzuDWfdRUfhHdY6+cn8HFRm+2hM8AnX GXws9555KrUB5qihylGa8subX2Nn6UwNR1AkUTV74bU= ) ; keytag 20326 . 172800 IN DNSKEY ( 257 3 8 AwEAAa96jeuknZlaeSrvyAJj6ZHv28hhOKkx3rLGXVaC6rXTsDc449/cidltpkyGwCJNnOAlFNKF 2jBosZBU5eeHspaQWOmOElZsjICMQMC3aeHbGiShvZsx4wMYSjH8e7Vrhbu6irwCzVBApESjbUdp WWmEnhathWu1jo+siFUiRAAxm9qyJNg/wOZqqzL/dL/q8PkcRU5oUKEpUge71M3ej2/7CPqpdVwu MoTvoB+ZOT4YeGyxMvHmbrxlFzGOHOijtzN+u1TQNatX2XBuzZNQ1K+s2CXkPIZo7s6JgZyvaBev YtxPvYLw4z9mR7K2vaF18UYH9Z9GNUUeayffKC73PYc= ) ; keytag 38696 . 172800 IN RRSIG ( DNSKEY 8 0 172800 20260512000000 20260421000000 20326 . QvSkyDkWG8iEuZYOE0DYqVepxjeSy+/OYdhrVakvBjxk4j3bjMQV1sXumjCBQdvxk7ISiGzCythX xG7extNG3exqPszcbu5F2yGP3HpdcZlPb5AJLRs66pfUFz8/nHDCymq2X9a/vNmm50EiG5fKSf/p ZzWEyPVcnb0pWFkGXHHjqWeZVJEXM+Xf04M4zQtfzcwOoSZ7csseLr7ukYmcAMqkW0YdqHlA/9RK BGKhRRtwM+Zisdmz6a4nveAIqcPoi9sSY2CTZauROG5GpiYKqjDvZhlPi1jBBX6LmE6UFgQgJxof Gph1+dXE9iEohtXmBxt580NFS/T9/UcgZan6Yg== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 3 DNSKEY records for .
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAb5dDYffpgAJ8VUGLwQtWXPlQWsjIFJtCM00/XaKU+8ln+ofah3q2KxEIjvzQg+nqdxRj+8e mtPne1mtYcbFWP4Q9E+DniOJLK09R05FuzvGbrG7DDdRDUX/cedFdV7O8pFEAYpJqYNR9BCTIAV9 73DO2biauKSA31b7I2lK/woxoR1tf5cqJ4SMbJUviuHicAEoUi2ATswloZNWd5T5thmEFZnxFx7D 5UgKCY7oflS7+GU7dNJwEtmFnWYVETHN0kHXVz6aguouaAZp706YXNIoR/iTgQhmsR7XX+wL0Z8Q M2LxQIyU6vRZ06IyuJMGRMiwkSuGElbumyBt12JZbrU= ) ; keytag 54393`
	`. 172800 IN DNSKEY ( 257 3 8 AwEAAaz/tAm8yTn4Mfeh5eyI96WSVexTBAvkMgJzkKTOiW1vkIbzxeF3+/4RgWOq7HrxRixHlFlE xOLAJr5emLvN7SWXgnLh4+B5xQlNVz8Og8kvArMtNROxVQuCaSnIDdD5LKyWbRd2n9WGe2R8PzgC mr3EgVLrjyBxWezF0jLHwVN8efS3rCj/EWgvIWgb9tarpVUDK/b58Da+sqqls3eNbuv7pr+eoZG+ SrDK6nWeL3c6H5Apxz7LjVc1uTIdsIXxuOLYA4/ilBmSVIzuDWfdRUfhHdY6+cn8HFRm+2hM8AnX GXws9555KrUB5qihylGa8subX2Nn6UwNR1AkUTV74bU= ) ; keytag 20326`
	`. 172800 IN DNSKEY ( 257 3 8 AwEAAa96jeuknZlaeSrvyAJj6ZHv28hhOKkx3rLGXVaC6rXTsDc449/cidltpkyGwCJNnOAlFNKF 2jBosZBU5eeHspaQWOmOElZsjICMQMC3aeHbGiShvZsx4wMYSjH8e7Vrhbu6irwCzVBApESjbUdp WWmEnhathWu1jo+siFUiRAAxm9qyJNg/wOZqqzL/dL/q8PkcRU5oUKEpUge71M3ej2/7CPqpdVwu MoTvoB+ZOT4YeGyxMvHmbrxlFzGOHOijtzN+u1TQNatX2XBuzZNQ1K+s2CXkPIZo7s6JgZyvaBev YtxPvYLw4z9mR7K2vaF18UYH9Z9GNUUeayffKC73PYc= ) ; keytag 38696`
	DNSKEY=20326/SEP is now in the chain-of-trust
	DS=20326/SHA-256 verifies DNSKEY=20326/SEP
	DNSKEY=38696/SEP is now in the chain-of-trust
	DS=38696/SHA-256 verifies DNSKEY=38696/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`. 172800 IN RRSIG ( DNSKEY 8 0 172800 20260512000000 20260421000000 20326 . QvSkyDkWG8iEuZYOE0DYqVepxjeSy+/OYdhrVakvBjxk4j3bjMQV1sXumjCBQdvxk7ISiGzCythX xG7extNG3exqPszcbu5F2yGP3HpdcZlPb5AJLRs66pfUFz8/nHDCymq2X9a/vNmm50EiG5fKSf/p ZzWEyPVcnb0pWFkGXHHjqWeZVJEXM+Xf04M4zQtfzcwOoSZ7csseLr7ukYmcAMqkW0YdqHlA/9RK BGKhRRtwM+Zisdmz6a4nveAIqcPoi9sSY2CTZauROG5GpiYKqjDvZhlPi1jBBX6LmE6UFgQgJxof Gph1+dXE9iEohtXmBxt580NFS/T9/UcgZan6Yg== )`
	RRSIG=20326 and DNSKEY=20326/SEP verifies the DNSKEY RRset
	DNSKEY=54393 is now in the chain-of-trust
	Query to i.root-servers.net for NLM.GOV/A
	Received 617 bytes from 192.36.148.17
	;; Response received from [192.36.148.17] 617 octets ;; HEADER SECTION ;; id = 38741 ;; qr = 1 aa = 0 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 0 ;; nscount = 6 arcount = 9 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; NLM.GOV. IN A ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (6 records) gov. 172800 IN NS a.ns.gov. gov. 172800 IN NS c.ns.gov. gov. 172800 IN NS b.ns.gov. gov. 172800 IN NS d.ns.gov. gov. 86400 IN DS ( 2536 13 2 0baf26b7bbf313a859046fd3b1ee49ddfba33934cfb3e717c21e2a2935c2f259 ) gov. 86400 IN RRSIG ( DS 8 1 86400 20260504050000 20260421040000 54393 . t9vRXsqoHdq+yBhjSreT8vVH8Mks2R4MxIvD0kRKyRkYYwDTd06KvVDmz4N1nbxBaqTxIxEHUiTP 33T1IFdxHcecrvB/wSAARcp9nhESJTk2hs4KHnafqKZbXzAXSW6T9TAaOfOHluvqIpelrZtFhLw1 OSEeAOGq3P9EsXMLVMOFTQ13laLaZySv2hqNlmE7a/sZrZJenEFypFil9Oq52zEq7AYHFXY8yIF8 K/W6e78Q5GkVSFZoUKDJf+zQR3wbjtgU2SLRU4PX3faOQfspokCUi2twXjWdFCGy/pZxmJ4AVfPW eRPy7jEG73C38WuIXpBUpzO+rhAERVkRTGPyNw== ) ;; ADDITIONAL SECTION (9 records) a.ns.gov. 172800 IN A 199.33.230.1 b.ns.gov. 172800 IN A 199.33.231.1 c.ns.gov. 172800 IN A 199.33.232.1 d.ns.gov. 172800 IN A 199.33.233.1 a.ns.gov. 172800 IN AAAA 2001:503:ff40::1 b.ns.gov. 172800 IN AAAA 2001:503:ff41::1 c.ns.gov. 172800 IN AAAA 2001:503:ff42::1 d.ns.gov. 172800 IN AAAA 2001:503:ff43::1 ;; { "EDNS-VERSION": 0 }
	Query to h.root-servers.net for GOV/DNSKEY
	Received 610 bytes from 198.97.190.53
	;; Response received from [198.97.190.53] 610 octets ;; HEADER SECTION ;; id = 31709 ;; qr = 1 aa = 0 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 0 ;; nscount = 6 arcount = 9 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; GOV. IN DNSKEY ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (6 records) GOV. 172800 IN NS a.ns.GOV. GOV. 172800 IN NS b.ns.GOV. GOV. 172800 IN NS c.ns.GOV. GOV. 172800 IN NS d.ns.GOV. GOV. 86400 IN DS ( 2536 13 2 0baf26b7bbf313a859046fd3b1ee49ddfba33934cfb3e717c21e2a2935c2f259 ) GOV. 86400 IN RRSIG ( DS 8 1 86400 20260504050000 20260421040000 54393 . t9vRXsqoHdq+yBhjSreT8vVH8Mks2R4MxIvD0kRKyRkYYwDTd06KvVDmz4N1nbxBaqTxIxEHUiTP 33T1IFdxHcecrvB/wSAARcp9nhESJTk2hs4KHnafqKZbXzAXSW6T9TAaOfOHluvqIpelrZtFhLw1 OSEeAOGq3P9EsXMLVMOFTQ13laLaZySv2hqNlmE7a/sZrZJenEFypFil9Oq52zEq7AYHFXY8yIF8 K/W6e78Q5GkVSFZoUKDJf+zQR3wbjtgU2SLRU4PX3faOQfspokCUi2twXjWdFCGy/pZxmJ4AVfPW eRPy7jEG73C38WuIXpBUpzO+rhAERVkRTGPyNw== ) ;; ADDITIONAL SECTION (9 records) a.ns.GOV. 172800 IN A 199.33.230.1 b.ns.GOV. 172800 IN A 199.33.231.1 c.ns.GOV. 172800 IN A 199.33.232.1 d.ns.GOV. 172800 IN A 199.33.233.1 a.ns.GOV. 172800 IN AAAA 2001:503:ff40::1 b.ns.GOV. 172800 IN AAAA 2001:503:ff41::1 c.ns.GOV. 172800 IN AAAA 2001:503:ff42::1 d.ns.GOV. 172800 IN AAAA 2001:503:ff43::1 ;; { "EDNS-VERSION": 0 }
	Found child zone GOV

GOV

	Checking DS between . and GOV
	Query to d.root-servers.net for GOV/DS
	Received 367 bytes from 199.7.91.13
	;; Response received from [199.7.91.13] 367 octets ;; HEADER SECTION ;; id = 14275 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 2 ;; nscount = 0 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1450, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; GOV. IN DS ;; ANSWER SECTION (2 records) GOV. 86400 IN DS ( 2536 13 2 0baf26b7bbf313a859046fd3b1ee49ddfba33934cfb3e717c21e2a2935c2f259 ) GOV. 86400 IN RRSIG ( DS 8 1 86400 20260504050000 20260421040000 54393 . t9vRXsqoHdq+yBhjSreT8vVH8Mks2R4MxIvD0kRKyRkYYwDTd06KvVDmz4N1nbxBaqTxIxEHUiTP 33T1IFdxHcecrvB/wSAARcp9nhESJTk2hs4KHnafqKZbXzAXSW6T9TAaOfOHluvqIpelrZtFhLw1 OSEeAOGq3P9EsXMLVMOFTQ13laLaZySv2hqNlmE7a/sZrZJenEFypFil9Oq52zEq7AYHFXY8yIF8 K/W6e78Q5GkVSFZoUKDJf+zQR3wbjtgU2SLRU4PX3faOQfspokCUi2twXjWdFCGy/pZxmJ4AVfPW eRPy7jEG73C38WuIXpBUpzO+rhAERVkRTGPyNw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 1 DS records for GOV in the . zone
	DS=2536/SHA-256 has algorithm ECDSAP256SHA256
	Found 1 RRSIGs over DS RRset
	`GOV. 86400 IN RRSIG ( DS 8 1 86400 20260504050000 20260421040000 54393 . t9vRXsqoHdq+yBhjSreT8vVH8Mks2R4MxIvD0kRKyRkYYwDTd06KvVDmz4N1nbxBaqTxIxEHUiTP 33T1IFdxHcecrvB/wSAARcp9nhESJTk2hs4KHnafqKZbXzAXSW6T9TAaOfOHluvqIpelrZtFhLw1 OSEeAOGq3P9EsXMLVMOFTQ13laLaZySv2hqNlmE7a/sZrZJenEFypFil9Oq52zEq7AYHFXY8yIF8 K/W6e78Q5GkVSFZoUKDJf+zQR3wbjtgU2SLRU4PX3faOQfspokCUi2twXjWdFCGy/pZxmJ4AVfPW eRPy7jEG73C38WuIXpBUpzO+rhAERVkRTGPyNw== )`
	RRSIG=54393 and DNSKEY=54393 verifies the DS RRset
	DS=2536/SHA-256 is now in the chain-of-trust
	`GOV. 86400 IN DS ( 2536 13 2 0baf26b7bbf313a859046fd3b1ee49ddfba33934cfb3e717c21e2a2935c2f259 )`
	Query to c.ns.GOV for GOV/DNSKEY
	Received 291 bytes from 199.33.232.1
	;; Response received from [199.33.232.1] 291 octets ;; HEADER SECTION ;; id = 40397 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 3 ;; nscount = 0 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; GOV. IN DNSKEY ;; ANSWER SECTION (3 records) GOV. 3600 IN DNSKEY ( 257 3 13 D6ZhJTObQw3+kcewWf5iTHbzD3uTdbs5xf0kQfP/VXZcDovWJd0DUgHlp2VC002aLDCwhLoPPVN2 VfyoPnjCqg== ) ; keytag 2536 GOV. 3600 IN DNSKEY ( 256 3 13 Of5kU9k4XfdcPwCK9k/zRJNu+Xspnw/BDd+1V6ZpDXRIpHe35BnHTZUBJN9gd6++HkiGXx2YnTji iO7/q+Yamg== ) ; keytag 35496 GOV. 3600 IN RRSIG ( DNSKEY 13 1 3600 20260605110630 20260405110630 2536 gov. 2iHkI6KNpypgXNkkvAKmXKicvyZoEJm+L3HYyM8970H7lTBFwiVYd2cum3MuioVU5WzMEQw1k1c6 /r/8XT47qw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 2 DNSKEY records for GOV
	`GOV. 3600 IN DNSKEY ( 257 3 13 D6ZhJTObQw3+kcewWf5iTHbzD3uTdbs5xf0kQfP/VXZcDovWJd0DUgHlp2VC002aLDCwhLoPPVN2 VfyoPnjCqg== ) ; keytag 2536`
	`GOV. 3600 IN DNSKEY ( 256 3 13 Of5kU9k4XfdcPwCK9k/zRJNu+Xspnw/BDd+1V6ZpDXRIpHe35BnHTZUBJN9gd6++HkiGXx2YnTji iO7/q+Yamg== ) ; keytag 35496`
	DNSKEY=2536/SEP is now in the chain-of-trust
	DS=2536/SHA-256 verifies DNSKEY=2536/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`GOV. 3600 IN RRSIG ( DNSKEY 13 1 3600 20260605110630 20260405110630 2536 gov. 2iHkI6KNpypgXNkkvAKmXKicvyZoEJm+L3HYyM8970H7lTBFwiVYd2cum3MuioVU5WzMEQw1k1c6 /r/8XT47qw== )`
	RRSIG=2536 and DNSKEY=2536/SEP verifies the DNSKEY RRset
	DNSKEY=35496 is now in the chain-of-trust
	Query to c.ns.GOV for NLM.GOV/A
	Received 418 bytes from 199.33.232.1
	;; Response received from [199.33.232.1] 418 octets ;; HEADER SECTION ;; id = 14520 ;; qr = 1 aa = 0 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 0 ;; nscount = 7 arcount = 7 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; NLM.GOV. IN A ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (7 records) NLM.GOV. 10800 IN NS lhcns1.nlm.nih.GOV. NLM.GOV. 10800 IN NS lhcns2.nlm.nih.GOV. NLM.GOV. 10800 IN NS ns.nih.GOV. NLM.GOV. 10800 IN NS ns2.nih.GOV. NLM.GOV. 10800 IN NS ns3.nih.GOV. NLM.GOV. 3600 IN DS ( 11192 8 2 0b363aed40ab1ca9efc1f750527c1f5a7df6f2c2c13868b7330cf0393ce225a5 ) NLM.GOV. 3600 IN RRSIG ( DS 13 2 3600 20260422143230 20260420123230 35496 gov. VdgnfrqxhFuHj/xa4RbHciRHyskAAlATkNDUUIWmLEmwYlDWSmj1rdaQkeyd2xvPukUon//4nhx4 ex9mjMowRQ== ) ;; ADDITIONAL SECTION (7 records) ns.nih.GOV. 3600 IN A 128.231.128.251 ns.nih.GOV. 3600 IN AAAA 2607:f220:404:101::80e7:80fb ns2.nih.GOV. 3600 IN A 128.231.64.1 ns2.nih.GOV. 3600 IN AAAA 2607:f220:418:4101::80e7:401 ns3.nih.GOV. 3600 IN A 165.112.4.230 ns3.nih.GOV. 3600 IN AAAA 2607:f220:402:1801::a570:4e6 ;; { "EDNS-VERSION": 0 }
	Query to b.ns.GOV for NLM.GOV/DNSKEY
	Received 418 bytes from 199.33.231.1
	;; Response received from [199.33.231.1] 418 octets ;; HEADER SECTION ;; id = 15134 ;; qr = 1 aa = 0 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 0 ;; nscount = 7 arcount = 7 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; NLM.GOV. IN DNSKEY ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (7 records) NLM.GOV. 10800 IN NS lhcns1.nlm.nih.GOV. NLM.GOV. 10800 IN NS lhcns2.nlm.nih.GOV. NLM.GOV. 10800 IN NS ns.nih.GOV. NLM.GOV. 10800 IN NS ns2.nih.GOV. NLM.GOV. 10800 IN NS ns3.nih.GOV. NLM.GOV. 3600 IN DS ( 11192 8 2 0b363aed40ab1ca9efc1f750527c1f5a7df6f2c2c13868b7330cf0393ce225a5 ) NLM.GOV. 3600 IN RRSIG ( DS 13 2 3600 20260422143230 20260420123230 35496 gov. xNJAT97Mk0qzPXr5GH7pHk4b7Q+vCss8C6L2VV0XBQqbc70jGu1n7NX2sMqrJmoFvAA5kU+h+hJy UV321UDv/w== ) ;; ADDITIONAL SECTION (7 records) ns.nih.GOV. 3600 IN A 128.231.128.251 ns.nih.GOV. 3600 IN AAAA 2607:f220:404:101::80e7:80fb ns2.nih.GOV. 3600 IN A 128.231.64.1 ns2.nih.GOV. 3600 IN AAAA 2607:f220:418:4101::80e7:401 ns3.nih.GOV. 3600 IN A 165.112.4.230 ns3.nih.GOV. 3600 IN AAAA 2607:f220:402:1801::a570:4e6 ;; { "EDNS-VERSION": 0 }
	Found child zone NLM.GOV

NLM.GOV

	Checking DS between GOV and NLM.GOV
	Query to d.ns.GOV for NLM.GOV/DS
	Received 183 bytes from 199.33.233.1
	;; Response received from [199.33.233.1] 183 octets ;; HEADER SECTION ;; id = 52873 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 2 ;; nscount = 0 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; NLM.GOV. IN DS ;; ANSWER SECTION (2 records) NLM.GOV. 3600 IN DS ( 11192 8 2 0b363aed40ab1ca9efc1f750527c1f5a7df6f2c2c13868b7330cf0393ce225a5 ) NLM.GOV. 3600 IN RRSIG ( DS 13 2 3600 20260422143230 20260420123230 35496 gov. FUWf/1e2XpfMFz9kVS4IleA3Iyzjq8DYMd1U1QsgFKOdLg9cbKKb5zsPP/3y1RVpZS6VIla0RcWt tVxccpBz9A== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 1 DS records for NLM.GOV in the GOV zone
	DS=11192/SHA-256 has algorithm RSASHA256
	Found 1 RRSIGs over DS RRset
	`NLM.GOV. 3600 IN RRSIG ( DS 13 2 3600 20260422143230 20260420123230 35496 gov. FUWf/1e2XpfMFz9kVS4IleA3Iyzjq8DYMd1U1QsgFKOdLg9cbKKb5zsPP/3y1RVpZS6VIla0RcWt tVxccpBz9A== )`
	RRSIG=35496 and DNSKEY=35496 verifies the DS RRset
	DS=11192/SHA-256 is now in the chain-of-trust
	`NLM.GOV. 3600 IN DS ( 11192 8 2 0b363aed40ab1ca9efc1f750527c1f5a7df6f2c2c13868b7330cf0393ce225a5 )`
	Query to lhcns1.nlm.nih.GOV for NLM.GOV/DNSKEY
	Received 762 bytes from 130.14.55.72
	;; Response received from [130.14.55.72] 762 octets ;; HEADER SECTION ;; id = 45516 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 3 ;; nscount = 0 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 4096, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; NLM.GOV. IN DNSKEY ;; ANSWER SECTION (3 records) nlm.gov. 3600 IN DNSKEY ( 256 3 8 AwEAAcdDkurwJxX5JzXCk5ztpb6D+wlz5HwtAgAJSCPNJOk4pZjHZ0f115+P2+uNNohPYMarUVno XKCVtGXNeKLk5fcq8b4zRjHjHGCWml3PMQ8m5g7C+1/zquj+sTzFVcURuJ+cb1c4fSLTPBdGQ6IW HYhaD3Tfo5Bk1iVOzPnNMEM/ ) ; keytag 13254 nlm.gov. 3600 IN DNSKEY ( 257 3 8 AwEAAaiSFY/3y3i/NYZFOcQr7Hxa5ucuiStzx4sgxWE8lekRuAXfQCuHwEwM4cmHLHg62Smgx2qZ G51vZ+Tnw5GkyeDSkVDWEEhROgoQ5Bv6XVMc6C15GVX1bcmcVsje0sHfpzu+DDbUPDMGI47vTfUK 8MJki8EiAh8vv4VDEL3hvJrncrOSBxuFQA8MqLvRokdz3F9ztGtaeNppjRH7M3XQJDC/HfVzDYzN zg8sbeNUVOKJMayCBxAK8+BJK/yeR4R/f+udMS+VF7ocmduMDktm4zb4ILWebt00Lj/50m/0H3k0 zj47uuEGTVdbEkBCpLbSOyObZj5ryRif5vl6AxievLs= ) ; keytag 11192 nlm.gov. 3600 IN RRSIG ( DNSKEY 8 2 3600 20260502093833 20260403100006 11192 nlm.gov. NIF8488OFuDxJ/Bq/KH4+OV97D0tORgPEmEFOzCme4t6EQuIM3i0dh5v8uujJucPTF9XC5lTRFV8 k00D4owJHoWSEeU3QSLjobK9JFmVO5jMA10hpq0xkGFA4A8cjGLWKneVKb0t1piuXrlVMFb4AJqX RPNRZz2QeGHQ1QRAIAOhLbbVvS5mNC2z0CGHMG0VIahxlepTMmKZUBeyOCg7EUp/lWyEj3rrciGQ tej5DmpuuzpFnMf9KPwmS9HeQ4Rvj/p0i9FN7T5ycuiuM08fouNIOBlxxHpQtaMB5G7gKgTXl+QF 6nlm+UNpVOeZnPWgTym3LgbiYr4Jy3jHInsUAQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 2 DNSKEY records for NLM.GOV
	`nlm.gov. 3600 IN DNSKEY ( 256 3 8 AwEAAcdDkurwJxX5JzXCk5ztpb6D+wlz5HwtAgAJSCPNJOk4pZjHZ0f115+P2+uNNohPYMarUVno XKCVtGXNeKLk5fcq8b4zRjHjHGCWml3PMQ8m5g7C+1/zquj+sTzFVcURuJ+cb1c4fSLTPBdGQ6IW HYhaD3Tfo5Bk1iVOzPnNMEM/ ) ; keytag 13254`
	`nlm.gov. 3600 IN DNSKEY ( 257 3 8 AwEAAaiSFY/3y3i/NYZFOcQr7Hxa5ucuiStzx4sgxWE8lekRuAXfQCuHwEwM4cmHLHg62Smgx2qZ G51vZ+Tnw5GkyeDSkVDWEEhROgoQ5Bv6XVMc6C15GVX1bcmcVsje0sHfpzu+DDbUPDMGI47vTfUK 8MJki8EiAh8vv4VDEL3hvJrncrOSBxuFQA8MqLvRokdz3F9ztGtaeNppjRH7M3XQJDC/HfVzDYzN zg8sbeNUVOKJMayCBxAK8+BJK/yeR4R/f+udMS+VF7ocmduMDktm4zb4ILWebt00Lj/50m/0H3k0 zj47uuEGTVdbEkBCpLbSOyObZj5ryRif5vl6AxievLs= ) ; keytag 11192`
	DNSKEY=11192/SEP is now in the chain-of-trust
	DS=11192/SHA-256 verifies DNSKEY=11192/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`nlm.gov. 3600 IN RRSIG ( DNSKEY 8 2 3600 20260502093833 20260403100006 11192 nlm.gov. NIF8488OFuDxJ/Bq/KH4+OV97D0tORgPEmEFOzCme4t6EQuIM3i0dh5v8uujJucPTF9XC5lTRFV8 k00D4owJHoWSEeU3QSLjobK9JFmVO5jMA10hpq0xkGFA4A8cjGLWKneVKb0t1piuXrlVMFb4AJqX RPNRZz2QeGHQ1QRAIAOhLbbVvS5mNC2z0CGHMG0VIahxlepTMmKZUBeyOCg7EUp/lWyEj3rrciGQ tej5DmpuuzpFnMf9KPwmS9HeQ4Rvj/p0i9FN7T5ycuiuM08fouNIOBlxxHpQtaMB5G7gKgTXl+QF 6nlm+UNpVOeZnPWgTym3LgbiYr4Jy3jHInsUAQ== )`
	RRSIG=11192 and DNSKEY=11192/SEP verifies the DNSKEY RRset
	DNSKEY=13254 is now in the chain-of-trust
	Query to ns2.nih.GOV for NLM.GOV/A
	Received 219 bytes from 128.231.64.1
	;; Response received from [128.231.64.1] 219 octets ;; HEADER SECTION ;; id = 3669 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 2 ;; nscount = 0 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1220, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; NLM.GOV. IN A ;; ANSWER SECTION (2 records) NLM.GOV. 3600 IN A 130.14.16.110 NLM.GOV. 3600 IN RRSIG ( A 8 2 3600 20260430110006 20260331105506 13254 nlm.gov. AgdXyVNDY33pV97gBmuDjfhY5OEQB/fOgOLTGTYo93jucxI5OWslo8LFbNWQhZMda9pRK1nPEJTN JgPWW4EWOYyYPI6uizd9QHlLSKHLMmTSeW4rkHp7acxBsE8mOQ51Ztp73wYl8TVOHt+AywsJsKSW ZmbRNN7aC+K2FNxLNaU= ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	ns2.nih.GOV is authoritative for NLM.GOV
	Found RRSIG signed by nlm.gov zone
	Query to lhcns1.nlm.nih.GOV for NLM.GOV/SOA
	Received 561 bytes from 130.14.55.72
	;; Response received from [130.14.55.72] 561 octets ;; HEADER SECTION ;; id = 60500 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 2 ;; nscount = 6 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 4096, ;; "OPTIONS": [ ;; {"EXTENDED-ERROR": {"ERROR": "Prohibited", "EXTRA-TEXT": "", "INFO-CODE": 18}} ] ;; } ;; QUESTION SECTION (1 record) ;; NLM.GOV. IN SOA ;; ANSWER SECTION (2 records) nlm.gov. 3600 IN SOA ( lhcns1.nlm.nih.gov. nlmdnshostmaster.mail.nih.gov. 793951209 ;serial 10800 ;refresh 3600 ;retry 604800 ;expire 3600 ;minimum ) nlm.gov. 3600 IN RRSIG ( SOA 8 2 3600 20260503110006 20260403100006 13254 nlm.gov. rREXqHWXHkzJ/rWTpwFkvuuEXWK3uBGyQpgAeOmGI5AFd4ODWWF7jLCGLYwElFJunsUr1D4KSXX4 w6Py34mpFJHjG5MKC9nPb+Uomgzp3km/IuvnMtXTk/7Rp+JM4fb5IrtKEuJvqVFI4opsZkwLdkPV m7O+hmr99sw7LDH/H7M= ) ;; AUTHORITY SECTION (6 records) nlm.gov. 86400 IN NS ns3.nih.gov. nlm.gov. 86400 IN NS lhcns1.nlm.nih.gov. nlm.gov. 86400 IN NS ns.nih.gov. nlm.gov. 86400 IN NS ns2.nih.gov. nlm.gov. 86400 IN NS lhcns2.nlm.nih.gov. nlm.gov. 86400 IN RRSIG ( NS 8 2 86400 20260430110006 20260331105506 13254 nlm.gov. qlruFgj9086LvIeJlDofRKqeGTN8oyC4sDiQznqp/6pdASUQV/5M+gxEOhIlCYmGAtowSq6M035l NvRSgNaPh4R66iuTcMovcv0FWEjqTYVyG57Nwb4De+zd/EgiitaRr7l+rwAL2lJmsUrhG93Tily6 M4azvYe0dsduf2YI/pY= ) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Query to ns3.nih.GOV for NLM.GOV/SOA
	Received 286 bytes from 165.112.4.230
	;; Response received from [165.112.4.230] 286 octets ;; HEADER SECTION ;; id = 31161 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 2 ;; nscount = 0 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1220, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; NLM.GOV. IN SOA ;; ANSWER SECTION (2 records) NLM.GOV. 3600 IN SOA ( lhcns1.nlm.nih.gov. nlmdnshostmaster.mail.nih.gov. 793951209 ;serial 10800 ;refresh 3600 ;retry 604800 ;expire 3600 ;minimum ) NLM.GOV. 3600 IN RRSIG ( SOA 8 2 3600 20260503110006 20260403100006 13254 nlm.gov. rREXqHWXHkzJ/rWTpwFkvuuEXWK3uBGyQpgAeOmGI5AFd4ODWWF7jLCGLYwElFJunsUr1D4KSXX4 w6Py34mpFJHjG5MKC9nPb+Uomgzp3km/IuvnMtXTk/7Rp+JM4fb5IrtKEuJvqVFI4opsZkwLdkPV m7O+hmr99sw7LDH/H7M= ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Query to ns.nih.GOV for NLM.GOV/SOA
	Received 286 bytes from 128.231.128.251
	;; Response received from [128.231.128.251] 286 octets ;; HEADER SECTION ;; id = 42149 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 2 ;; nscount = 0 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1220, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; NLM.GOV. IN SOA ;; ANSWER SECTION (2 records) NLM.GOV. 3600 IN SOA ( lhcns1.nlm.nih.gov. nlmdnshostmaster.mail.nih.gov. 793951209 ;serial 10800 ;refresh 3600 ;retry 604800 ;expire 3600 ;minimum ) NLM.GOV. 3600 IN RRSIG ( SOA 8 2 3600 20260503110006 20260403100006 13254 nlm.gov. rREXqHWXHkzJ/rWTpwFkvuuEXWK3uBGyQpgAeOmGI5AFd4ODWWF7jLCGLYwElFJunsUr1D4KSXX4 w6Py34mpFJHjG5MKC9nPb+Uomgzp3km/IuvnMtXTk/7Rp+JM4fb5IrtKEuJvqVFI4opsZkwLdkPV m7O+hmr99sw7LDH/H7M= ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Query to lhcns2.nlm.nih.GOV for NLM.GOV/SOA
	Received 561 bytes from 130.14.55.128
	;; Response received from [130.14.55.128] 561 octets ;; HEADER SECTION ;; id = 46714 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 2 ;; nscount = 6 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 4096, ;; "OPTIONS": [ ;; {"EXTENDED-ERROR": {"ERROR": "Prohibited", "EXTRA-TEXT": "", "INFO-CODE": 18}} ] ;; } ;; QUESTION SECTION (1 record) ;; NLM.GOV. IN SOA ;; ANSWER SECTION (2 records) nlm.gov. 3600 IN SOA ( lhcns1.nlm.nih.gov. nlmdnshostmaster.mail.nih.gov. 793951209 ;serial 10800 ;refresh 3600 ;retry 604800 ;expire 3600 ;minimum ) nlm.gov. 3600 IN RRSIG ( SOA 8 2 3600 20260503110006 20260403100006 13254 nlm.gov. rREXqHWXHkzJ/rWTpwFkvuuEXWK3uBGyQpgAeOmGI5AFd4ODWWF7jLCGLYwElFJunsUr1D4KSXX4 w6Py34mpFJHjG5MKC9nPb+Uomgzp3km/IuvnMtXTk/7Rp+JM4fb5IrtKEuJvqVFI4opsZkwLdkPV m7O+hmr99sw7LDH/H7M= ) ;; AUTHORITY SECTION (6 records) nlm.gov. 86400 IN NS ns3.nih.gov. nlm.gov. 86400 IN NS ns.nih.gov. nlm.gov. 86400 IN NS lhcns1.nlm.nih.gov. nlm.gov. 86400 IN NS lhcns2.nlm.nih.gov. nlm.gov. 86400 IN NS ns2.nih.gov. nlm.gov. 86400 IN RRSIG ( NS 8 2 86400 20260430110006 20260331105506 13254 nlm.gov. qlruFgj9086LvIeJlDofRKqeGTN8oyC4sDiQznqp/6pdASUQV/5M+gxEOhIlCYmGAtowSq6M035l NvRSgNaPh4R66iuTcMovcv0FWEjqTYVyG57Nwb4De+zd/EgiitaRr7l+rwAL2lJmsUrhG93Tily6 M4azvYe0dsduf2YI/pY= ) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Query to ns2.nih.GOV for NLM.GOV/A
	NLM.GOV A RR has value 130.14.16.110
	Found 1 RRSIGs over A RRset
	`NLM.GOV. 3600 IN RRSIG ( A 8 2 3600 20260430110006 20260331105506 13254 nlm.gov. AgdXyVNDY33pV97gBmuDjfhY5OEQB/fOgOLTGTYo93jucxI5OWslo8LFbNWQhZMda9pRK1nPEJTN JgPWW4EWOYyYPI6uizd9QHlLSKHLMmTSeW4rkHp7acxBsE8mOQ51Ztp73wYl8TVOHt+AywsJsKSW ZmbRNN7aC+K2FNxLNaU= )`
	RRSIG=13254 and DNSKEY=13254 verifies the A RRset

NLM.GOV

	Query to ns.nih.GOV for NLM.GOV/A
	Received 219 bytes from 128.231.128.251
	;; Response received from [128.231.128.251] 219 octets ;; HEADER SECTION ;; id = 62218 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 2 ;; nscount = 0 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1220, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; NLM.GOV. IN A ;; ANSWER SECTION (2 records) NLM.GOV. 3600 IN A 130.14.16.110 NLM.GOV. 3600 IN RRSIG ( A 8 2 3600 20260430110006 20260331105506 13254 nlm.gov. AgdXyVNDY33pV97gBmuDjfhY5OEQB/fOgOLTGTYo93jucxI5OWslo8LFbNWQhZMda9pRK1nPEJTN JgPWW4EWOYyYPI6uizd9QHlLSKHLMmTSeW4rkHp7acxBsE8mOQ51Ztp73wYl8TVOHt+AywsJsKSW ZmbRNN7aC+K2FNxLNaU= ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	ns.nih.GOV is authoritative for NLM.GOV
	Found RRSIG signed by nlm.gov zone
	Query to ns.nih.GOV for NLM.GOV/A
	NLM.GOV A RR has value 130.14.16.110
	Found 1 RRSIGs over A RRset
	`NLM.GOV. 3600 IN RRSIG ( A 8 2 3600 20260430110006 20260331105506 13254 nlm.gov. AgdXyVNDY33pV97gBmuDjfhY5OEQB/fOgOLTGTYo93jucxI5OWslo8LFbNWQhZMda9pRK1nPEJTN JgPWW4EWOYyYPI6uizd9QHlLSKHLMmTSeW4rkHp7acxBsE8mOQ51Ztp73wYl8TVOHt+AywsJsKSW ZmbRNN7aC+K2FNxLNaU= )`
	RRSIG=13254 and DNSKEY=13254 verifies the A RRset

NLM.GOV

	Query to lhcns1.nlm.nih.GOV for NLM.GOV/A
	Received 512 bytes from 130.14.55.72
	;; Response received from [130.14.55.72] 512 octets ;; HEADER SECTION ;; id = 59829 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 2 ;; nscount = 6 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 4096, ;; "OPTIONS": [ ;; {"EXTENDED-ERROR": {"ERROR": "Prohibited", "EXTRA-TEXT": "", "INFO-CODE": 18}} ] ;; } ;; QUESTION SECTION (1 record) ;; NLM.GOV. IN A ;; ANSWER SECTION (2 records) nlm.gov. 3600 IN A 130.14.16.110 nlm.gov. 3600 IN RRSIG ( A 8 2 3600 20260430110006 20260331105506 13254 nlm.gov. AgdXyVNDY33pV97gBmuDjfhY5OEQB/fOgOLTGTYo93jucxI5OWslo8LFbNWQhZMda9pRK1nPEJTN JgPWW4EWOYyYPI6uizd9QHlLSKHLMmTSeW4rkHp7acxBsE8mOQ51Ztp73wYl8TVOHt+AywsJsKSW ZmbRNN7aC+K2FNxLNaU= ) ;; AUTHORITY SECTION (6 records) nlm.gov. 86400 IN NS lhcns1.nlm.nih.gov. nlm.gov. 86400 IN NS lhcns2.nlm.nih.gov. nlm.gov. 86400 IN NS ns2.nih.gov. nlm.gov. 86400 IN NS ns3.nih.gov. nlm.gov. 86400 IN NS ns.nih.gov. nlm.gov. 86400 IN RRSIG ( NS 8 2 86400 20260430110006 20260331105506 13254 nlm.gov. qlruFgj9086LvIeJlDofRKqeGTN8oyC4sDiQznqp/6pdASUQV/5M+gxEOhIlCYmGAtowSq6M035l NvRSgNaPh4R66iuTcMovcv0FWEjqTYVyG57Nwb4De+zd/EgiitaRr7l+rwAL2lJmsUrhG93Tily6 M4azvYe0dsduf2YI/pY= ) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	lhcns1.nlm.nih.GOV is authoritative for NLM.GOV
	Found RRSIG signed by nlm.gov zone
	Query to lhcns1.nlm.nih.GOV for NLM.GOV/A
	NLM.GOV A RR has value 130.14.16.110
	Found 1 RRSIGs over A RRset
	`nlm.gov. 3600 IN RRSIG ( A 8 2 3600 20260430110006 20260331105506 13254 nlm.gov. AgdXyVNDY33pV97gBmuDjfhY5OEQB/fOgOLTGTYo93jucxI5OWslo8LFbNWQhZMda9pRK1nPEJTN JgPWW4EWOYyYPI6uizd9QHlLSKHLMmTSeW4rkHp7acxBsE8mOQ51Ztp73wYl8TVOHt+AywsJsKSW ZmbRNN7aC+K2FNxLNaU= )`
	RRSIG=13254 and DNSKEY=13254 verifies the A RRset

NLM.GOV

	Query to lhcns2.nlm.nih.GOV for NLM.GOV/A
	Received 512 bytes from 130.14.55.128
	;; Response received from [130.14.55.128] 512 octets ;; HEADER SECTION ;; id = 31814 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 2 ;; nscount = 6 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 4096, ;; "OPTIONS": [ ;; {"EXTENDED-ERROR": {"ERROR": "Prohibited", "EXTRA-TEXT": "", "INFO-CODE": 18}} ] ;; } ;; QUESTION SECTION (1 record) ;; NLM.GOV. IN A ;; ANSWER SECTION (2 records) nlm.gov. 3600 IN A 130.14.16.110 nlm.gov. 3600 IN RRSIG ( A 8 2 3600 20260430110006 20260331105506 13254 nlm.gov. AgdXyVNDY33pV97gBmuDjfhY5OEQB/fOgOLTGTYo93jucxI5OWslo8LFbNWQhZMda9pRK1nPEJTN JgPWW4EWOYyYPI6uizd9QHlLSKHLMmTSeW4rkHp7acxBsE8mOQ51Ztp73wYl8TVOHt+AywsJsKSW ZmbRNN7aC+K2FNxLNaU= ) ;; AUTHORITY SECTION (6 records) nlm.gov. 86400 IN NS lhcns1.nlm.nih.gov. nlm.gov. 86400 IN NS ns.nih.gov. nlm.gov. 86400 IN NS lhcns2.nlm.nih.gov. nlm.gov. 86400 IN NS ns2.nih.gov. nlm.gov. 86400 IN NS ns3.nih.gov. nlm.gov. 86400 IN RRSIG ( NS 8 2 86400 20260430110006 20260331105506 13254 nlm.gov. qlruFgj9086LvIeJlDofRKqeGTN8oyC4sDiQznqp/6pdASUQV/5M+gxEOhIlCYmGAtowSq6M035l NvRSgNaPh4R66iuTcMovcv0FWEjqTYVyG57Nwb4De+zd/EgiitaRr7l+rwAL2lJmsUrhG93Tily6 M4azvYe0dsduf2YI/pY= ) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	lhcns2.nlm.nih.GOV is authoritative for NLM.GOV
	Found RRSIG signed by nlm.gov zone
	Query to lhcns2.nlm.nih.GOV for NLM.GOV/A
	NLM.GOV A RR has value 130.14.16.110
	Found 1 RRSIGs over A RRset
	`nlm.gov. 3600 IN RRSIG ( A 8 2 3600 20260430110006 20260331105506 13254 nlm.gov. AgdXyVNDY33pV97gBmuDjfhY5OEQB/fOgOLTGTYo93jucxI5OWslo8LFbNWQhZMda9pRK1nPEJTN JgPWW4EWOYyYPI6uizd9QHlLSKHLMmTSeW4rkHp7acxBsE8mOQ51Ztp73wYl8TVOHt+AywsJsKSW ZmbRNN7aC+K2FNxLNaU= )`
	RRSIG=13254 and DNSKEY=13254 verifies the A RRset

NLM.GOV

	Query to ns3.nih.GOV for NLM.GOV/A
	Received 219 bytes from 165.112.4.230
	;; Response received from [165.112.4.230] 219 octets ;; HEADER SECTION ;; id = 64239 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 2 ;; nscount = 0 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1220, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; NLM.GOV. IN A ;; ANSWER SECTION (2 records) NLM.GOV. 3600 IN A 130.14.16.110 NLM.GOV. 3600 IN RRSIG ( A 8 2 3600 20260430110006 20260331105506 13254 nlm.gov. AgdXyVNDY33pV97gBmuDjfhY5OEQB/fOgOLTGTYo93jucxI5OWslo8LFbNWQhZMda9pRK1nPEJTN JgPWW4EWOYyYPI6uizd9QHlLSKHLMmTSeW4rkHp7acxBsE8mOQ51Ztp73wYl8TVOHt+AywsJsKSW ZmbRNN7aC+K2FNxLNaU= ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	ns3.nih.GOV is authoritative for NLM.GOV
	Found RRSIG signed by nlm.gov zone
	Query to ns3.nih.GOV for NLM.GOV/A
	NLM.GOV A RR has value 130.14.16.110
	Found 1 RRSIGs over A RRset
	`NLM.GOV. 3600 IN RRSIG ( A 8 2 3600 20260430110006 20260331105506 13254 nlm.gov. AgdXyVNDY33pV97gBmuDjfhY5OEQB/fOgOLTGTYo93jucxI5OWslo8LFbNWQhZMda9pRK1nPEJTN JgPWW4EWOYyYPI6uizd9QHlLSKHLMmTSeW4rkHp7acxBsE8mOQ51Ztp73wYl8TVOHt+AywsJsKSW ZmbRNN7aC+K2FNxLNaU= )`
	RRSIG=13254 and DNSKEY=13254 verifies the A RRset

Move your mouse over any or symbols for remediation hints.

Want a second opinion? Test NLM.GOV at dnsviz.net.

DNSSEC Debugger

↓ Advanced options ↑ Advanced options

Trust Anchor:
Name Servers: