DNSSEC Debugger

Domain Name:

Time: 2025-03-26 20:06:31 UTC

Analyzing DNSSEC problems for nic.cz

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 1414 bytes from 198.97.190.53
	;; Response received from [198.97.190.53] 1414 octets ;; HEADER SECTION ;; id = 49126 ;; 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 = 5 ;; nscount = 0 arcount = 1 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; . IN DNSKEY ;; ANSWER SECTION (5 records) . 172800 IN DNSKEY ( 256 3 8 AwEAAZ5A7jOztf62cGqhPhutjnyl7KBjIsjbyTb8il+FsgbMUbO2NQHaSbatHdlOlqANncDwSIKZ 9ryqd1+Dy1PoGzeTUv95vOJnVVJHlJu7xdavnUmPs+Mh2NV7hDlTTwPn5uXgFxAaxoO9M/YIAC92 GryCLjoJEg9JzeevkktEM/sFpmRv4I5jQtlLyRqVbnCzcWpi04XaVLxRKvURkd/Mdb/2RQS3MYvr kEBXuqtnAVBCf6Fx4sgBYOfYvbUuG2diLnGJW/MXvFpctZgQ76+3FwMqAZfR9k5bohL7AF3+jqz4 MUiootYoh5koyt7VEnUULxxy6U5PINTGgOC26f3zZuk= ) ; keytag 26470 . 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 DNSKEY ( 256 3 8 AwEAAbEbGCpGTDrcZTWqWWE72nphyshpRcILdzCVlBGU9Ln1Fui9kkseUOP+g5GLUeVFKdTloeRT A9+EYiQdXgWXmXmuW/nGxZjAikluF/O9NzLVrr5iZnth2xu+F48nrJlAgWWiMNau54NI5sZ3iVQf hFsq2pZmf43RauRPniYMShOLO7EBWWXr5glDSgZGS9fSm6xHwwF+g8D4m8oanjvdCBNxXzSEKS31 ibxjLifTfvwCg3y4XXcNW9U6Nu3JmoKUdxqpPPIkBvVQbIz4UO2FwaR13uXC03ALP1Yx2QNSS4SZ lcIMtAftQR9wtCiuPWQnFv4jkzWqlhp1Lmf7bcoL9yk= ) ; keytag 53148 . 172800 IN RRSIG ( DNSKEY 8 0 172800 20250412000000 20250322000000 20326 . b2kcHcO2v3F/EEvNO86YQXeOTVzFdOgE2DfKaLv76yf5ysmz+W2/2Nyk8c6l+JRyclrKXPeWjI2k 6E2MneyTCXosQLDMXxw/aQ+lxVWJzBqC1c5rtlTD11cbYV1KQQl/AIdrKheI5FMmmwi7e+LV7pN9 MV1Q7oImWQoRpCjhwic3zBmLUs3wUc2hb6nBswUQsecqOxkBQeqfCb8tOwiylzr8rg5G7dTeYzMt pJqSOoL/QfsuoQrGNZOEkMHKesbg8FP+tCF/iQpWU1zLpZ/jB7sF0C/FJFo9dKn6lzPKvL+VoJfr NO7GcXUspveBZUXlSbFlcbw8QmVmVxjAvHcrtg== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 4 DNSKEY records for .
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAZ5A7jOztf62cGqhPhutjnyl7KBjIsjbyTb8il+FsgbMUbO2NQHaSbatHdlOlqANncDwSIKZ 9ryqd1+Dy1PoGzeTUv95vOJnVVJHlJu7xdavnUmPs+Mh2NV7hDlTTwPn5uXgFxAaxoO9M/YIAC92 GryCLjoJEg9JzeevkktEM/sFpmRv4I5jQtlLyRqVbnCzcWpi04XaVLxRKvURkd/Mdb/2RQS3MYvr kEBXuqtnAVBCf6Fx4sgBYOfYvbUuG2diLnGJW/MXvFpctZgQ76+3FwMqAZfR9k5bohL7AF3+jqz4 MUiootYoh5koyt7VEnUULxxy6U5PINTGgOC26f3zZuk= ) ; keytag 26470`
	`. 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 DNSKEY ( 256 3 8 AwEAAbEbGCpGTDrcZTWqWWE72nphyshpRcILdzCVlBGU9Ln1Fui9kkseUOP+g5GLUeVFKdTloeRT A9+EYiQdXgWXmXmuW/nGxZjAikluF/O9NzLVrr5iZnth2xu+F48nrJlAgWWiMNau54NI5sZ3iVQf hFsq2pZmf43RauRPniYMShOLO7EBWWXr5glDSgZGS9fSm6xHwwF+g8D4m8oanjvdCBNxXzSEKS31 ibxjLifTfvwCg3y4XXcNW9U6Nu3JmoKUdxqpPPIkBvVQbIz4UO2FwaR13uXC03ALP1Yx2QNSS4SZ lcIMtAftQR9wtCiuPWQnFv4jkzWqlhp1Lmf7bcoL9yk= ) ; keytag 53148`
	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 20250412000000 20250322000000 20326 . b2kcHcO2v3F/EEvNO86YQXeOTVzFdOgE2DfKaLv76yf5ysmz+W2/2Nyk8c6l+JRyclrKXPeWjI2k 6E2MneyTCXosQLDMXxw/aQ+lxVWJzBqC1c5rtlTD11cbYV1KQQl/AIdrKheI5FMmmwi7e+LV7pN9 MV1Q7oImWQoRpCjhwic3zBmLUs3wUc2hb6nBswUQsecqOxkBQeqfCb8tOwiylzr8rg5G7dTeYzMt pJqSOoL/QfsuoQrGNZOEkMHKesbg8FP+tCF/iQpWU1zLpZ/jB7sF0C/FJFo9dKn6lzPKvL+VoJfr NO7GcXUspveBZUXlSbFlcbw8QmVmVxjAvHcrtg== )`
	RRSIG=20326 and DNSKEY=20326/SEP verifies the DNSKEY RRset
	DNSKEY=26470 is now in the chain-of-trust
	DNSKEY=38696/SEP is now in the chain-of-trust
	DNSKEY=53148 is now in the chain-of-trust
	Query to d.root-servers.net for nic.cz/A
	Received 613 bytes from 199.7.91.13
	;; Response received from [199.7.91.13] 613 octets ;; HEADER SECTION ;; id = 10006 ;; 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": 1450, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; nic.cz. IN A ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (6 records) cz. 172800 IN NS a.ns.nic.cz. cz. 172800 IN NS b.ns.nic.cz. cz. 172800 IN NS c.ns.nic.cz. cz. 172800 IN NS d.ns.nic.cz. cz. 86400 IN DS ( 20237 13 2 cff0f3ecdbc529c1f0031ba1840bfb835853b9209ed1e508fff48451d7b778e2 ) cz. 86400 IN RRSIG ( DS 8 1 86400 20250408140000 20250326130000 26470 . fUL3EFjCLxQ77sYM7cbppxEjh9IBpdXwoxqAdg82TEOA3TWbMadQXFpSCECFl+ii5T0ylaP7iBHy vl7/zk+LEATfure93mML4otfig6vsf52B/QrMRbRbyM0InDggRSxtn2Iew96OmTBz2ASQo6KZ4kd 1M4dp36Gi5mjO5JGrCupJabzPa5sqCzBDYw693GpPXQe3w8GTABqgp7ugQ1mZUtHD/lxZedpSH5I Qplikwo95r8wf6EZEvpcJLOESwVKX6568RrYi4ZAQoGKlxSRQgfhlEe+d2aWefg/Icu/kjslRTlP azxUXbBca9aFlvhi4e9re7BgBiO/3lyeg3DiLA== ) ;; ADDITIONAL SECTION (9 records) a.ns.nic.cz. 172800 IN A 194.0.12.1 b.ns.nic.cz. 172800 IN A 194.0.13.1 c.ns.nic.cz. 172800 IN A 194.0.14.1 d.ns.nic.cz. 172800 IN A 193.29.206.1 a.ns.nic.cz. 172800 IN AAAA 2001:678:f::1 b.ns.nic.cz. 172800 IN AAAA 2001:678:10::1 c.ns.nic.cz. 172800 IN AAAA 2001:678:11::1 d.ns.nic.cz. 172800 IN AAAA 2001:678:1::1 ;; { "EDNS-VERSION": 0 }
	Query to m.root-servers.net for cz/DNSKEY
	Received 615 bytes from 202.12.27.33
	;; Response received from [202.12.27.33] 615 octets ;; HEADER SECTION ;; id = 24565 ;; 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) ;; cz. IN DNSKEY ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (6 records) cz. 172800 IN NS a.ns.nic.cz. cz. 172800 IN NS c.ns.nic.cz. cz. 172800 IN NS b.ns.nic.cz. cz. 172800 IN NS d.ns.nic.cz. cz. 86400 IN DS ( 20237 13 2 cff0f3ecdbc529c1f0031ba1840bfb835853b9209ed1e508fff48451d7b778e2 ) cz. 86400 IN RRSIG ( DS 8 1 86400 20250408140000 20250326130000 26470 . fUL3EFjCLxQ77sYM7cbppxEjh9IBpdXwoxqAdg82TEOA3TWbMadQXFpSCECFl+ii5T0ylaP7iBHy vl7/zk+LEATfure93mML4otfig6vsf52B/QrMRbRbyM0InDggRSxtn2Iew96OmTBz2ASQo6KZ4kd 1M4dp36Gi5mjO5JGrCupJabzPa5sqCzBDYw693GpPXQe3w8GTABqgp7ugQ1mZUtHD/lxZedpSH5I Qplikwo95r8wf6EZEvpcJLOESwVKX6568RrYi4ZAQoGKlxSRQgfhlEe+d2aWefg/Icu/kjslRTlP azxUXbBca9aFlvhi4e9re7BgBiO/3lyeg3DiLA== ) ;; ADDITIONAL SECTION (9 records) d.ns.nic.cz. 172800 IN A 193.29.206.1 c.ns.nic.cz. 172800 IN A 194.0.14.1 b.ns.nic.cz. 172800 IN A 194.0.13.1 a.ns.nic.cz. 172800 IN A 194.0.12.1 d.ns.nic.cz. 172800 IN AAAA 2001:678:1::1 c.ns.nic.cz. 172800 IN AAAA 2001:678:11::1 b.ns.nic.cz. 172800 IN AAAA 2001:678:10::1 a.ns.nic.cz. 172800 IN AAAA 2001:678:f::1 ;; { "EDNS-VERSION": 0 }
	Found child zone cz

	Checking DS between . and cz
	Query to k.root-servers.net for cz/DS
	Received 366 bytes from 193.0.14.129
	;; Response received from [193.0.14.129] 366 octets ;; HEADER SECTION ;; id = 45738 ;; 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) ;; cz. IN DS ;; ANSWER SECTION (2 records) cz. 86400 IN DS ( 20237 13 2 cff0f3ecdbc529c1f0031ba1840bfb835853b9209ed1e508fff48451d7b778e2 ) cz. 86400 IN RRSIG ( DS 8 1 86400 20250408140000 20250326130000 26470 . fUL3EFjCLxQ77sYM7cbppxEjh9IBpdXwoxqAdg82TEOA3TWbMadQXFpSCECFl+ii5T0ylaP7iBHy vl7/zk+LEATfure93mML4otfig6vsf52B/QrMRbRbyM0InDggRSxtn2Iew96OmTBz2ASQo6KZ4kd 1M4dp36Gi5mjO5JGrCupJabzPa5sqCzBDYw693GpPXQe3w8GTABqgp7ugQ1mZUtHD/lxZedpSH5I Qplikwo95r8wf6EZEvpcJLOESwVKX6568RrYi4ZAQoGKlxSRQgfhlEe+d2aWefg/Icu/kjslRTlP azxUXbBca9aFlvhi4e9re7BgBiO/3lyeg3DiLA== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 1 DS records for cz in the . zone
	DS=20237/SHA-256 has algorithm ECDSAP256SHA256
	Found 1 RRSIGs over DS RRset
	`cz. 86400 IN RRSIG ( DS 8 1 86400 20250408140000 20250326130000 26470 . fUL3EFjCLxQ77sYM7cbppxEjh9IBpdXwoxqAdg82TEOA3TWbMadQXFpSCECFl+ii5T0ylaP7iBHy vl7/zk+LEATfure93mML4otfig6vsf52B/QrMRbRbyM0InDggRSxtn2Iew96OmTBz2ASQo6KZ4kd 1M4dp36Gi5mjO5JGrCupJabzPa5sqCzBDYw693GpPXQe3w8GTABqgp7ugQ1mZUtHD/lxZedpSH5I Qplikwo95r8wf6EZEvpcJLOESwVKX6568RrYi4ZAQoGKlxSRQgfhlEe+d2aWefg/Icu/kjslRTlP azxUXbBca9aFlvhi4e9re7BgBiO/3lyeg3DiLA== )`
	RRSIG=26470 and DNSKEY=26470 verifies the DS RRset
	DS=20237/SHA-256 is now in the chain-of-trust
	`cz. 86400 IN DS ( 20237 13 2 cff0f3ecdbc529c1f0031ba1840bfb835853b9209ed1e508fff48451d7b778e2 )`
	Query to a.ns.nic.cz for cz/DNSKEY
	Received 289 bytes from 194.0.12.1
	;; Response received from [194.0.12.1] 289 octets ;; HEADER SECTION ;; id = 50240 ;; 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) ;; cz. IN DNSKEY ;; ANSWER SECTION (3 records) cz. 3600 IN DNSKEY ( 256 3 13 JDcbxTHoO6cZ/4hzaLgqRTF++3ZfFRlBOEWxpPg8O81iNcE4VUak7emjb8HzFD9sJgljXp+H+YDh sUElk27Mng== ) ; keytag 63781 cz. 3600 IN DNSKEY ( 257 3 13 nqzH7xP1QU5UOVy/VvxFSlrB/XgX9JDJzj51PzIj35TXjZTyalTlAT/f7PAfaSD5mEG1N8Vk9NmI 2nxgQqhzDQ== ) ; keytag 20237 cz. 3600 IN RRSIG ( DNSKEY 13 1 3600 20250406002134 20250322225134 20237 cz. dM5wGE3eMGdZhx8pGUfrDGj/M6tV6pSCogjneX94SLN4rBhZBmV6Epitt6P8FlKzE5wqppUTExdg s6WLHsHbGw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 2 DNSKEY records for cz
	`cz. 3600 IN DNSKEY ( 256 3 13 JDcbxTHoO6cZ/4hzaLgqRTF++3ZfFRlBOEWxpPg8O81iNcE4VUak7emjb8HzFD9sJgljXp+H+YDh sUElk27Mng== ) ; keytag 63781`
	`cz. 3600 IN DNSKEY ( 257 3 13 nqzH7xP1QU5UOVy/VvxFSlrB/XgX9JDJzj51PzIj35TXjZTyalTlAT/f7PAfaSD5mEG1N8Vk9NmI 2nxgQqhzDQ== ) ; keytag 20237`
	DNSKEY=20237/SEP is now in the chain-of-trust
	DS=20237/SHA-256 verifies DNSKEY=20237/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`cz. 3600 IN RRSIG ( DNSKEY 13 1 3600 20250406002134 20250322225134 20237 cz. dM5wGE3eMGdZhx8pGUfrDGj/M6tV6pSCogjneX94SLN4rBhZBmV6Epitt6P8FlKzE5wqppUTExdg s6WLHsHbGw== )`
	RRSIG=20237 and DNSKEY=20237/SEP verifies the DNSKEY RRset
	DNSKEY=63781 is now in the chain-of-trust
	Query to d.ns.nic.cz for nic.cz/A
	Received 1056 bytes from 193.29.206.1
	;; Response received from [193.29.206.1] 1056 octets ;; HEADER SECTION ;; id = 8440 ;; 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 = 4 arcount = 13 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; nic.cz. IN A ;; ANSWER SECTION (2 records) nic.cz. 1800 IN A 217.31.205.50 nic.cz. 1800 IN RRSIG ( A 13 2 1800 20250403235554 20250320222554 22527 nic.cz. p8lmbK/Y6a62346Mmzed3xPA6XXMx2BD8T8npDd3G3dpE6l3sCFHCb55FKR+65BVfIBk+E8vmvQ2 oW8nKeBsYQ== ) ;; AUTHORITY SECTION (4 records) nic.cz. 1800 IN NS d.ns.nic.cz. nic.cz. 1800 IN NS a.ns.nic.cz. nic.cz. 1800 IN NS b.ns.nic.cz. nic.cz. 1800 IN RRSIG ( NS 13 2 1800 20250403235554 20250320222554 22527 nic.cz. c3QtRL7hCCLHLHrVmwoRJhZYBoCWh65sy5JP9Dwz7PgbphYgn54ooTX/dLNpiqB/Jj+QeNAsDf73 AoiUVFSQRg== ) ;; ADDITIONAL SECTION (13 records) a.ns.nic.cz. 1800 IN A 194.0.12.1 b.ns.nic.cz. 1800 IN A 194.0.13.1 d.ns.nic.cz. 1800 IN A 193.29.206.1 a.ns.nic.cz. 1800 IN AAAA 2001:678:f::1 b.ns.nic.cz. 1800 IN AAAA 2001:678:10::1 d.ns.nic.cz. 1800 IN AAAA 2001:678:1::1 a.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. RwWoIK/ZvlQB6euKzrSn9u4R6fJaYZvyLt3qF/LEpgCMBUDQRblQVm2ZTBgn0kC4Huq7P5OtoWJr auM3Ow3gZg== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. qFt70D65vv0IdIe3y8PAPeKgH4On9Rza8n15WxeRPDU7GnxsYzzKAKbzm1PrfPzZVa6/giOuH0xZ HDqFb2jH5w== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. 3rfZbPOeF3v5zujZMZp2mPMM31xsFiukA27hRKLVsiNxSeDNQJtYryNwy1jpDA52HHWTfZjEcTEq y7b5be5nvg== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. ghRiLu1kljGEGNqqdurwltdk7LIM/+iXY7qmKxwcuEBDxcHtNPICUPUxXd6rAPNkPS1O8EZEtEYh de2s2t1XDg== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. bTs+MGWI2y45uVBLwXfWvUGZQPwKK6sJMGz3CYcjCy/c4X0AD+NCVbtiXugy9pRhqGoRn9p95GDc XHViHR6mkA== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. m+kzjDY1UbscjZuU0B7MQdLFPL5k3QZqrFnEXXsCQJL4R2rpUYjhNrEJwzeitPmoBngiMRF5Jxqt a4SEHGwVpQ== ) ;; { "EDNS-VERSION": 0 }
	d.ns.nic.cz is authoritative for nic.cz
	Query to b.ns.nic.cz for nic.cz/DNSKEY
	Received 297 bytes from 194.0.13.1
	;; Response received from [194.0.13.1] 297 octets ;; HEADER SECTION ;; id = 4258 ;; 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) ;; nic.cz. IN DNSKEY ;; ANSWER SECTION (3 records) nic.cz. 1800 IN DNSKEY ( 256 3 13 a1GRJETuXplqbpWp3Hd+KLrf8ie2dvxcgRrUHAB8m7IC4QoZghiOpJZnegbNq4B4jlvymAbGxFPx busmY8P/SQ== ) ; keytag 22527 nic.cz. 1800 IN DNSKEY ( 257 3 13 5JHONhyBjPMyEeLeXUSukKwpfXlNPYmVYyUzSpDkPGyZ/HWnnc4ay5pUfPQ5vGunuHI2O7b/ueXy hQTMOkkmOA== ) ; keytag 8600 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20250404012554 20250320235554 8600 nic.cz. c2YZEqk+rHigYVrz4oZ6k9Q9wegaOAKAM2lo4zqfr2mBIRuDLSM4qbJf2i5hPReYC3+zmnhPh4Nn dUcdb06F+A== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found child zone nic.cz
	Attempting to learn nameservers for nic.cz
	Query to d.ns.nic.cz for nic.cz/NS
	Received 938 bytes from 193.29.206.1
	;; Response received from [193.29.206.1] 938 octets ;; HEADER SECTION ;; id = 49993 ;; 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 = 13 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; nic.cz. IN NS ;; ANSWER SECTION (4 records) nic.cz. 1800 IN NS b.ns.nic.cz. nic.cz. 1800 IN NS a.ns.nic.cz. nic.cz. 1800 IN NS d.ns.nic.cz. nic.cz. 1800 IN RRSIG ( NS 13 2 1800 20250403235554 20250320222554 22527 nic.cz. c3QtRL7hCCLHLHrVmwoRJhZYBoCWh65sy5JP9Dwz7PgbphYgn54ooTX/dLNpiqB/Jj+QeNAsDf73 AoiUVFSQRg== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (13 records) a.ns.nic.cz. 1800 IN A 194.0.12.1 b.ns.nic.cz. 1800 IN A 194.0.13.1 d.ns.nic.cz. 1800 IN A 193.29.206.1 a.ns.nic.cz. 1800 IN AAAA 2001:678:f::1 b.ns.nic.cz. 1800 IN AAAA 2001:678:10::1 d.ns.nic.cz. 1800 IN AAAA 2001:678:1::1 a.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. RwWoIK/ZvlQB6euKzrSn9u4R6fJaYZvyLt3qF/LEpgCMBUDQRblQVm2ZTBgn0kC4Huq7P5OtoWJr auM3Ow3gZg== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. qFt70D65vv0IdIe3y8PAPeKgH4On9Rza8n15WxeRPDU7GnxsYzzKAKbzm1PrfPzZVa6/giOuH0xZ HDqFb2jH5w== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. 3rfZbPOeF3v5zujZMZp2mPMM31xsFiukA27hRKLVsiNxSeDNQJtYryNwy1jpDA52HHWTfZjEcTEq y7b5be5nvg== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. ghRiLu1kljGEGNqqdurwltdk7LIM/+iXY7qmKxwcuEBDxcHtNPICUPUxXd6rAPNkPS1O8EZEtEYh de2s2t1XDg== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. bTs+MGWI2y45uVBLwXfWvUGZQPwKK6sJMGz3CYcjCy/c4X0AD+NCVbtiXugy9pRhqGoRn9p95GDc XHViHR6mkA== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. m+kzjDY1UbscjZuU0B7MQdLFPL5k3QZqrFnEXXsCQJL4R2rpUYjhNrEJwzeitPmoBngiMRF5Jxqt a4SEHGwVpQ== ) ;; { "EDNS-VERSION": 0 }
	Found nic.cz nameservers: b.ns.nic.cz, a.ns.nic.cz, d.ns.nic.cz

nic.cz

	Checking DS between cz and nic.cz
	Query to c.ns.nic.cz for nic.cz/DS
	Received 181 bytes from 194.0.14.1
	;; Response received from [194.0.14.1] 181 octets ;; HEADER SECTION ;; id = 18185 ;; 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) ;; nic.cz. IN DS ;; ANSWER SECTION (2 records) nic.cz. 3600 IN DS ( 8600 13 2 5f66fb3b63ae7a607ddca5748b7d39117f61df3d333bb38783f238e5015788b8 ) nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20250401184700 20250318171700 63781 cz. OkIuck5lvc3GkK0bI2wGNBokVHiEau0ioxHfsX1RyXmxjcU1w/dasdZwvS41QhnDarMwond+Cs8+ joQDYpc1jw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 1 DS records for nic.cz in the cz zone
	DS=8600/SHA-256 has algorithm ECDSAP256SHA256
	Found 1 RRSIGs over DS RRset
	`nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20250401184700 20250318171700 63781 cz. OkIuck5lvc3GkK0bI2wGNBokVHiEau0ioxHfsX1RyXmxjcU1w/dasdZwvS41QhnDarMwond+Cs8+ joQDYpc1jw== )`
	RRSIG=63781 and DNSKEY=63781 verifies the DS RRset
	DS=8600/SHA-256 is now in the chain-of-trust
	`nic.cz. 3600 IN DS ( 8600 13 2 5f66fb3b63ae7a607ddca5748b7d39117f61df3d333bb38783f238e5015788b8 )`
	Query to d.ns.nic.cz for nic.cz/DNSKEY
	Received 297 bytes from 193.29.206.1
	;; Response received from [193.29.206.1] 297 octets ;; HEADER SECTION ;; id = 20352 ;; 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) ;; nic.cz. IN DNSKEY ;; ANSWER SECTION (3 records) nic.cz. 1800 IN DNSKEY ( 257 3 13 5JHONhyBjPMyEeLeXUSukKwpfXlNPYmVYyUzSpDkPGyZ/HWnnc4ay5pUfPQ5vGunuHI2O7b/ueXy hQTMOkkmOA== ) ; keytag 8600 nic.cz. 1800 IN DNSKEY ( 256 3 13 a1GRJETuXplqbpWp3Hd+KLrf8ie2dvxcgRrUHAB8m7IC4QoZghiOpJZnegbNq4B4jlvymAbGxFPx busmY8P/SQ== ) ; keytag 22527 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20250404012554 20250320235554 8600 nic.cz. c2YZEqk+rHigYVrz4oZ6k9Q9wegaOAKAM2lo4zqfr2mBIRuDLSM4qbJf2i5hPReYC3+zmnhPh4Nn dUcdb06F+A== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 2 DNSKEY records for nic.cz
	`nic.cz. 1800 IN DNSKEY ( 257 3 13 5JHONhyBjPMyEeLeXUSukKwpfXlNPYmVYyUzSpDkPGyZ/HWnnc4ay5pUfPQ5vGunuHI2O7b/ueXy hQTMOkkmOA== ) ; keytag 8600`
	`nic.cz. 1800 IN DNSKEY ( 256 3 13 a1GRJETuXplqbpWp3Hd+KLrf8ie2dvxcgRrUHAB8m7IC4QoZghiOpJZnegbNq4B4jlvymAbGxFPx busmY8P/SQ== ) ; keytag 22527`
	DNSKEY=8600/SEP is now in the chain-of-trust
	DS=8600/SHA-256 verifies DNSKEY=8600/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20250404012554 20250320235554 8600 nic.cz. c2YZEqk+rHigYVrz4oZ6k9Q9wegaOAKAM2lo4zqfr2mBIRuDLSM4qbJf2i5hPReYC3+zmnhPh4Nn dUcdb06F+A== )`
	RRSIG=8600 and DNSKEY=8600/SEP verifies the DNSKEY RRset
	DNSKEY=22527 is now in the chain-of-trust
	Query to a.ns.nic.cz for nic.cz/A
	Received 153 bytes from 194.0.12.1
	;; Response received from [194.0.12.1] 153 octets ;; HEADER SECTION ;; id = 24996 ;; 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) ;; nic.cz. IN A ;; ANSWER SECTION (2 records) nic.cz. 1800 IN A 217.31.205.50 nic.cz. 1800 IN RRSIG ( A 13 2 1800 20250403235554 20250320222554 22527 nic.cz. p8lmbK/Y6a62346Mmzed3xPA6XXMx2BD8T8npDd3G3dpE6l3sCFHCb55FKR+65BVfIBk+E8vmvQ2 oW8nKeBsYQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	a.ns.nic.cz is authoritative for nic.cz
	Found RRSIG signed by nic.cz zone
	Query to b.ns.nic.cz for nic.cz/SOA
	Received 189 bytes from 194.0.13.1
	;; Response received from [194.0.13.1] 189 octets ;; HEADER SECTION ;; id = 30220 ;; 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) ;; nic.cz. IN SOA ;; ANSWER SECTION (2 records) nic.cz. 1800 IN SOA ( a.ns.nic.cz. hostmaster.nic.cz. 1743001799 ;serial 14400 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20250409150956 20250326133956 22527 nic.cz. ClAiyAeV9jsO9TNH/hmMlRpfm214sDJFBBPHKKqpmMke60GNiLLvqUx65a+EnzwJ2A4ujuV77ZEA 6VOymhh9SQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Query to d.ns.nic.cz for nic.cz/SOA
	Received 1087 bytes from 193.29.206.1
	;; Response received from [193.29.206.1] 1087 octets ;; HEADER SECTION ;; id = 7924 ;; 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 = 4 arcount = 13 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; nic.cz. IN SOA ;; ANSWER SECTION (2 records) nic.cz. 1800 IN SOA ( a.ns.nic.cz. hostmaster.nic.cz. 1743001799 ;serial 14400 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20250409150956 20250326133956 22527 nic.cz. ClAiyAeV9jsO9TNH/hmMlRpfm214sDJFBBPHKKqpmMke60GNiLLvqUx65a+EnzwJ2A4ujuV77ZEA 6VOymhh9SQ== ) ;; AUTHORITY SECTION (4 records) nic.cz. 1800 IN NS a.ns.nic.cz. nic.cz. 1800 IN NS b.ns.nic.cz. nic.cz. 1800 IN NS d.ns.nic.cz. nic.cz. 1800 IN RRSIG ( NS 13 2 1800 20250403235554 20250320222554 22527 nic.cz. c3QtRL7hCCLHLHrVmwoRJhZYBoCWh65sy5JP9Dwz7PgbphYgn54ooTX/dLNpiqB/Jj+QeNAsDf73 AoiUVFSQRg== ) ;; ADDITIONAL SECTION (13 records) a.ns.nic.cz. 1800 IN A 194.0.12.1 b.ns.nic.cz. 1800 IN A 194.0.13.1 d.ns.nic.cz. 1800 IN A 193.29.206.1 a.ns.nic.cz. 1800 IN AAAA 2001:678:f::1 b.ns.nic.cz. 1800 IN AAAA 2001:678:10::1 d.ns.nic.cz. 1800 IN AAAA 2001:678:1::1 a.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. RwWoIK/ZvlQB6euKzrSn9u4R6fJaYZvyLt3qF/LEpgCMBUDQRblQVm2ZTBgn0kC4Huq7P5OtoWJr auM3Ow3gZg== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. qFt70D65vv0IdIe3y8PAPeKgH4On9Rza8n15WxeRPDU7GnxsYzzKAKbzm1PrfPzZVa6/giOuH0xZ HDqFb2jH5w== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. 3rfZbPOeF3v5zujZMZp2mPMM31xsFiukA27hRKLVsiNxSeDNQJtYryNwy1jpDA52HHWTfZjEcTEq y7b5be5nvg== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. ghRiLu1kljGEGNqqdurwltdk7LIM/+iXY7qmKxwcuEBDxcHtNPICUPUxXd6rAPNkPS1O8EZEtEYh de2s2t1XDg== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. bTs+MGWI2y45uVBLwXfWvUGZQPwKK6sJMGz3CYcjCy/c4X0AD+NCVbtiXugy9pRhqGoRn9p95GDc XHViHR6mkA== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. m+kzjDY1UbscjZuU0B7MQdLFPL5k3QZqrFnEXXsCQJL4R2rpUYjhNrEJwzeitPmoBngiMRF5Jxqt a4SEHGwVpQ== ) ;; { "EDNS-VERSION": 0 }
	Query to a.ns.nic.cz for nic.cz/A
	Received 153 bytes from 194.0.12.1
	;; Response received from [194.0.12.1] 153 octets ;; HEADER SECTION ;; id = 11415 ;; 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) ;; nic.cz. IN A ;; ANSWER SECTION (2 records) nic.cz. 1800 IN A 217.31.205.50 nic.cz. 1800 IN RRSIG ( A 13 2 1800 20250403235554 20250320222554 22527 nic.cz. p8lmbK/Y6a62346Mmzed3xPA6XXMx2BD8T8npDd3G3dpE6l3sCFHCb55FKR+65BVfIBk+E8vmvQ2 oW8nKeBsYQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	nic.cz A RR has value 217.31.205.50
	Found 1 RRSIGs over A RRset
	`nic.cz. 1800 IN RRSIG ( A 13 2 1800 20250403235554 20250320222554 22527 nic.cz. p8lmbK/Y6a62346Mmzed3xPA6XXMx2BD8T8npDd3G3dpE6l3sCFHCb55FKR+65BVfIBk+E8vmvQ2 oW8nKeBsYQ== )`
	RRSIG=22527 and DNSKEY=22527 verifies the A RRset

nic.cz

	Query to b.ns.nic.cz for nic.cz/A
	Received 153 bytes from 194.0.13.1
	;; Response received from [194.0.13.1] 153 octets ;; HEADER SECTION ;; id = 2025 ;; 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) ;; nic.cz. IN A ;; ANSWER SECTION (2 records) nic.cz. 1800 IN A 217.31.205.50 nic.cz. 1800 IN RRSIG ( A 13 2 1800 20250403235554 20250320222554 22527 nic.cz. p8lmbK/Y6a62346Mmzed3xPA6XXMx2BD8T8npDd3G3dpE6l3sCFHCb55FKR+65BVfIBk+E8vmvQ2 oW8nKeBsYQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	b.ns.nic.cz is authoritative for nic.cz
	Found RRSIG signed by nic.cz zone
	Query to b.ns.nic.cz for nic.cz/A
	Received 153 bytes from 194.0.13.1
	;; Response received from [194.0.13.1] 153 octets ;; HEADER SECTION ;; id = 55405 ;; 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) ;; nic.cz. IN A ;; ANSWER SECTION (2 records) nic.cz. 1800 IN A 217.31.205.50 nic.cz. 1800 IN RRSIG ( A 13 2 1800 20250403235554 20250320222554 22527 nic.cz. p8lmbK/Y6a62346Mmzed3xPA6XXMx2BD8T8npDd3G3dpE6l3sCFHCb55FKR+65BVfIBk+E8vmvQ2 oW8nKeBsYQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	nic.cz A RR has value 217.31.205.50
	Found 1 RRSIGs over A RRset
	`nic.cz. 1800 IN RRSIG ( A 13 2 1800 20250403235554 20250320222554 22527 nic.cz. p8lmbK/Y6a62346Mmzed3xPA6XXMx2BD8T8npDd3G3dpE6l3sCFHCb55FKR+65BVfIBk+E8vmvQ2 oW8nKeBsYQ== )`
	RRSIG=22527 and DNSKEY=22527 verifies the A RRset

nic.cz

	Query to d.ns.nic.cz for nic.cz/A
	Received 1056 bytes from 193.29.206.1
	;; Response received from [193.29.206.1] 1056 octets ;; HEADER SECTION ;; id = 29887 ;; 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 = 4 arcount = 13 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; nic.cz. IN A ;; ANSWER SECTION (2 records) nic.cz. 1800 IN A 217.31.205.50 nic.cz. 1800 IN RRSIG ( A 13 2 1800 20250403235554 20250320222554 22527 nic.cz. p8lmbK/Y6a62346Mmzed3xPA6XXMx2BD8T8npDd3G3dpE6l3sCFHCb55FKR+65BVfIBk+E8vmvQ2 oW8nKeBsYQ== ) ;; AUTHORITY SECTION (4 records) nic.cz. 1800 IN NS b.ns.nic.cz. nic.cz. 1800 IN NS a.ns.nic.cz. nic.cz. 1800 IN NS d.ns.nic.cz. nic.cz. 1800 IN RRSIG ( NS 13 2 1800 20250403235554 20250320222554 22527 nic.cz. c3QtRL7hCCLHLHrVmwoRJhZYBoCWh65sy5JP9Dwz7PgbphYgn54ooTX/dLNpiqB/Jj+QeNAsDf73 AoiUVFSQRg== ) ;; ADDITIONAL SECTION (13 records) a.ns.nic.cz. 1800 IN A 194.0.12.1 b.ns.nic.cz. 1800 IN A 194.0.13.1 d.ns.nic.cz. 1800 IN A 193.29.206.1 a.ns.nic.cz. 1800 IN AAAA 2001:678:f::1 b.ns.nic.cz. 1800 IN AAAA 2001:678:10::1 d.ns.nic.cz. 1800 IN AAAA 2001:678:1::1 a.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. RwWoIK/ZvlQB6euKzrSn9u4R6fJaYZvyLt3qF/LEpgCMBUDQRblQVm2ZTBgn0kC4Huq7P5OtoWJr auM3Ow3gZg== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. qFt70D65vv0IdIe3y8PAPeKgH4On9Rza8n15WxeRPDU7GnxsYzzKAKbzm1PrfPzZVa6/giOuH0xZ HDqFb2jH5w== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. 3rfZbPOeF3v5zujZMZp2mPMM31xsFiukA27hRKLVsiNxSeDNQJtYryNwy1jpDA52HHWTfZjEcTEq y7b5be5nvg== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. ghRiLu1kljGEGNqqdurwltdk7LIM/+iXY7qmKxwcuEBDxcHtNPICUPUxXd6rAPNkPS1O8EZEtEYh de2s2t1XDg== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. bTs+MGWI2y45uVBLwXfWvUGZQPwKK6sJMGz3CYcjCy/c4X0AD+NCVbtiXugy9pRhqGoRn9p95GDc XHViHR6mkA== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. m+kzjDY1UbscjZuU0B7MQdLFPL5k3QZqrFnEXXsCQJL4R2rpUYjhNrEJwzeitPmoBngiMRF5Jxqt a4SEHGwVpQ== ) ;; { "EDNS-VERSION": 0 }
	d.ns.nic.cz is authoritative for nic.cz
	Found RRSIG signed by nic.cz zone
	Query to d.ns.nic.cz for nic.cz/A
	Received 1056 bytes from 193.29.206.1
	;; Response received from [193.29.206.1] 1056 octets ;; HEADER SECTION ;; id = 18063 ;; 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 = 4 arcount = 13 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; nic.cz. IN A ;; ANSWER SECTION (2 records) nic.cz. 1800 IN A 217.31.205.50 nic.cz. 1800 IN RRSIG ( A 13 2 1800 20250403235554 20250320222554 22527 nic.cz. p8lmbK/Y6a62346Mmzed3xPA6XXMx2BD8T8npDd3G3dpE6l3sCFHCb55FKR+65BVfIBk+E8vmvQ2 oW8nKeBsYQ== ) ;; AUTHORITY SECTION (4 records) nic.cz. 1800 IN NS a.ns.nic.cz. nic.cz. 1800 IN NS d.ns.nic.cz. nic.cz. 1800 IN NS b.ns.nic.cz. nic.cz. 1800 IN RRSIG ( NS 13 2 1800 20250403235554 20250320222554 22527 nic.cz. c3QtRL7hCCLHLHrVmwoRJhZYBoCWh65sy5JP9Dwz7PgbphYgn54ooTX/dLNpiqB/Jj+QeNAsDf73 AoiUVFSQRg== ) ;; ADDITIONAL SECTION (13 records) a.ns.nic.cz. 1800 IN A 194.0.12.1 b.ns.nic.cz. 1800 IN A 194.0.13.1 d.ns.nic.cz. 1800 IN A 193.29.206.1 a.ns.nic.cz. 1800 IN AAAA 2001:678:f::1 b.ns.nic.cz. 1800 IN AAAA 2001:678:10::1 d.ns.nic.cz. 1800 IN AAAA 2001:678:1::1 a.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. RwWoIK/ZvlQB6euKzrSn9u4R6fJaYZvyLt3qF/LEpgCMBUDQRblQVm2ZTBgn0kC4Huq7P5OtoWJr auM3Ow3gZg== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. qFt70D65vv0IdIe3y8PAPeKgH4On9Rza8n15WxeRPDU7GnxsYzzKAKbzm1PrfPzZVa6/giOuH0xZ HDqFb2jH5w== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. 3rfZbPOeF3v5zujZMZp2mPMM31xsFiukA27hRKLVsiNxSeDNQJtYryNwy1jpDA52HHWTfZjEcTEq y7b5be5nvg== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. ghRiLu1kljGEGNqqdurwltdk7LIM/+iXY7qmKxwcuEBDxcHtNPICUPUxXd6rAPNkPS1O8EZEtEYh de2s2t1XDg== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250403235554 20250320222554 22527 nic.cz. bTs+MGWI2y45uVBLwXfWvUGZQPwKK6sJMGz3CYcjCy/c4X0AD+NCVbtiXugy9pRhqGoRn9p95GDc XHViHR6mkA== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250403235554 20250320222554 22527 nic.cz. m+kzjDY1UbscjZuU0B7MQdLFPL5k3QZqrFnEXXsCQJL4R2rpUYjhNrEJwzeitPmoBngiMRF5Jxqt a4SEHGwVpQ== ) ;; { "EDNS-VERSION": 0 }
	nic.cz A RR has value 217.31.205.50
	Found 1 RRSIGs over A RRset
	`nic.cz. 1800 IN RRSIG ( A 13 2 1800 20250403235554 20250320222554 22527 nic.cz. p8lmbK/Y6a62346Mmzed3xPA6XXMx2BD8T8npDd3G3dpE6l3sCFHCb55FKR+65BVfIBk+E8vmvQ2 oW8nKeBsYQ== )`
	RRSIG=22527 and DNSKEY=22527 verifies the A RRset

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