DNSSEC Debugger

Domain Name:

Time: 2025-07-12 07:05:58 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 b.root-servers.net for ./DNSKEY
	Received 1414 bytes from 170.247.170.2
	;; Response received from [170.247.170.2] 1414 octets ;; HEADER SECTION ;; id = 48338 ;; 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 AwEAAbEbGCpGTDrcZTWqWWE72nphyshpRcILdzCVlBGU9Ln1Fui9kkseUOP+g5GLUeVFKdTloeRT A9+EYiQdXgWXmXmuW/nGxZjAikluF/O9NzLVrr5iZnth2xu+F48nrJlAgWWiMNau54NI5sZ3iVQf hFsq2pZmf43RauRPniYMShOLO7EBWWXr5glDSgZGS9fSm6xHwwF+g8D4m8oanjvdCBNxXzSEKS31 ibxjLifTfvwCg3y4XXcNW9U6Nu3JmoKUdxqpPPIkBvVQbIz4UO2FwaR13uXC03ALP1Yx2QNSS4SZ lcIMtAftQR9wtCiuPWQnFv4jkzWqlhp1Lmf7bcoL9yk= ) ; keytag 53148 . 172800 IN DNSKEY ( 256 3 8 AwEAAbauxLSFZ+KSWi2cT6TJbm3d+GIVqb2N1XnDjMsRme0b6JlGp/cvwmM5CaJ5LQ7tG1r7LuTH jYZadtbNk2nZmclq9r4KInS48ungoAZb0gJXVw8IvBTBb1YWQmiBqD285pJuORwTii7DF++nNJJk 3i55HJt9SmBI7m7t8nvx7OOY/w0inxg3fLH2uY0SKO8he4FGwMc4Ubiab8N8Yhyhh+FkKKdD/+oA cuGF75PjlSXO460B4MlNLlEcjDEzIsKauRYx4YVgSaNomGhMMFblmXRzgW+1R6ywvm5mC9+omlyy izZp2GJfPwGMezuKSGDndO6CYYEc5/lsRhvBYsGjdPM= ) ; keytag 46441 . 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 20250801000000 20250711000000 20326 . WwWSfJzdfRVlUhGNEnrahgVWN54iU6fIm3g0XhxC1f3yxbK7s1iQFZpKwJ0xNQkBeBFA0/sb7N4D nZVn1gdF9F8oOQ5sDllyjewNoDjAgtyN+inLgl9Ta/aK1Tn183K0P0jevWG8MmbIC8TCmbv/SvyD TZK3BIMsQ+HGu8jloGYgIgbliKrG14GtXcF2jcjLFaIT7J1j1pO1ErcUrgd7hmfEC9emCZbDuQAt RQ+mWJL9NNTj6RToAUxA8sI4kEgrslBAzzc6co7TbhediJ/2ya1in+nLTCBHV53oL1JGITWaGwMf lcDwQEkWFJ0dRxhNDkKvuDCRz3VnPaAkDPLrbA== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 4 DNSKEY records for .
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAbEbGCpGTDrcZTWqWWE72nphyshpRcILdzCVlBGU9Ln1Fui9kkseUOP+g5GLUeVFKdTloeRT A9+EYiQdXgWXmXmuW/nGxZjAikluF/O9NzLVrr5iZnth2xu+F48nrJlAgWWiMNau54NI5sZ3iVQf hFsq2pZmf43RauRPniYMShOLO7EBWWXr5glDSgZGS9fSm6xHwwF+g8D4m8oanjvdCBNxXzSEKS31 ibxjLifTfvwCg3y4XXcNW9U6Nu3JmoKUdxqpPPIkBvVQbIz4UO2FwaR13uXC03ALP1Yx2QNSS4SZ lcIMtAftQR9wtCiuPWQnFv4jkzWqlhp1Lmf7bcoL9yk= ) ; keytag 53148`
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAbauxLSFZ+KSWi2cT6TJbm3d+GIVqb2N1XnDjMsRme0b6JlGp/cvwmM5CaJ5LQ7tG1r7LuTH jYZadtbNk2nZmclq9r4KInS48ungoAZb0gJXVw8IvBTBb1YWQmiBqD285pJuORwTii7DF++nNJJk 3i55HJt9SmBI7m7t8nvx7OOY/w0inxg3fLH2uY0SKO8he4FGwMc4Ubiab8N8Yhyhh+FkKKdD/+oA cuGF75PjlSXO460B4MlNLlEcjDEzIsKauRYx4YVgSaNomGhMMFblmXRzgW+1R6ywvm5mC9+omlyy izZp2GJfPwGMezuKSGDndO6CYYEc5/lsRhvBYsGjdPM= ) ; keytag 46441`
	`. 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
	Found 1 RRSIGs over DNSKEY RRset
	`. 172800 IN RRSIG ( DNSKEY 8 0 172800 20250801000000 20250711000000 20326 . WwWSfJzdfRVlUhGNEnrahgVWN54iU6fIm3g0XhxC1f3yxbK7s1iQFZpKwJ0xNQkBeBFA0/sb7N4D nZVn1gdF9F8oOQ5sDllyjewNoDjAgtyN+inLgl9Ta/aK1Tn183K0P0jevWG8MmbIC8TCmbv/SvyD TZK3BIMsQ+HGu8jloGYgIgbliKrG14GtXcF2jcjLFaIT7J1j1pO1ErcUrgd7hmfEC9emCZbDuQAt RQ+mWJL9NNTj6RToAUxA8sI4kEgrslBAzzc6co7TbhediJ/2ya1in+nLTCBHV53oL1JGITWaGwMf lcDwQEkWFJ0dRxhNDkKvuDCRz3VnPaAkDPLrbA== )`
	RRSIG=20326 and DNSKEY=20326/SEP verifies the DNSKEY RRset
	DNSKEY=53148 is now in the chain-of-trust
	DNSKEY=46441 is now in the chain-of-trust
	DNSKEY=38696/SEP is now in the chain-of-trust
	Query to h.root-servers.net for nic.cz/A
	Received 613 bytes from 198.97.190.53
	;; Response received from [198.97.190.53] 613 octets ;; HEADER SECTION ;; id = 11196 ;; 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) ;; 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 20250725050000 20250712040000 46441 . ByoO5yua4uB8xhfFNQnEd3BdzjyLkB4OPCuLcsIZOe9q0A3A2Lg1VrIc2muf22w72Q3IrAVRAnPT nzcfFjQo19uqDkdbeMwiyWfoTSSmEJmggG3VIAgYmQ7ggMPMgpMykmovCZmsvHJaALGSTwmHm2oi Ja6AI3BaRuuFsdAmazfqcqT0lVDW18BF8skAvU2YKyt6KbT4833Dt4HTqwRAKtuy3mdLArnFkH4e uvifGcVxYNdgQfVfbdwQbeeyGB56UOdsqpgkDXn58VzxlcbwiLohMVCw0/2IaGkQTeYQX0sUi0qC EQmGYZgNtF7ByaJ4L96S6dHQivJScJyljtueMA== ) ;; 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 e.root-servers.net for cz/DNSKEY
	Received 613 bytes from 192.203.230.10
	;; Response received from [192.203.230.10] 613 octets ;; HEADER SECTION ;; id = 20161 ;; 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": 1472, ;; "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 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 20250725050000 20250712040000 46441 . ByoO5yua4uB8xhfFNQnEd3BdzjyLkB4OPCuLcsIZOe9q0A3A2Lg1VrIc2muf22w72Q3IrAVRAnPT nzcfFjQo19uqDkdbeMwiyWfoTSSmEJmggG3VIAgYmQ7ggMPMgpMykmovCZmsvHJaALGSTwmHm2oi Ja6AI3BaRuuFsdAmazfqcqT0lVDW18BF8skAvU2YKyt6KbT4833Dt4HTqwRAKtuy3mdLArnFkH4e uvifGcVxYNdgQfVfbdwQbeeyGB56UOdsqpgkDXn58VzxlcbwiLohMVCw0/2IaGkQTeYQX0sUi0qC EQmGYZgNtF7ByaJ4L96S6dHQivJScJyljtueMA== ) ;; ADDITIONAL SECTION (9 records) a.ns.nic.cz. 172800 IN A 194.0.12.1 a.ns.nic.cz. 172800 IN AAAA 2001:678:f::1 b.ns.nic.cz. 172800 IN A 194.0.13.1 b.ns.nic.cz. 172800 IN AAAA 2001:678:10::1 c.ns.nic.cz. 172800 IN A 194.0.14.1 c.ns.nic.cz. 172800 IN AAAA 2001:678:11::1 d.ns.nic.cz. 172800 IN A 193.29.206.1 d.ns.nic.cz. 172800 IN AAAA 2001:678:1::1 ;; { "EDNS-VERSION": 0 }
	Found child zone cz

	Checking DS between . and cz
	Query to m.root-servers.net for cz/DS
	Received 366 bytes from 202.12.27.33
	;; Response received from [202.12.27.33] 366 octets ;; HEADER SECTION ;; id = 22453 ;; 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 20250725050000 20250712040000 46441 . ByoO5yua4uB8xhfFNQnEd3BdzjyLkB4OPCuLcsIZOe9q0A3A2Lg1VrIc2muf22w72Q3IrAVRAnPT nzcfFjQo19uqDkdbeMwiyWfoTSSmEJmggG3VIAgYmQ7ggMPMgpMykmovCZmsvHJaALGSTwmHm2oi Ja6AI3BaRuuFsdAmazfqcqT0lVDW18BF8skAvU2YKyt6KbT4833Dt4HTqwRAKtuy3mdLArnFkH4e uvifGcVxYNdgQfVfbdwQbeeyGB56UOdsqpgkDXn58VzxlcbwiLohMVCw0/2IaGkQTeYQX0sUi0qC EQmGYZgNtF7ByaJ4L96S6dHQivJScJyljtueMA== ) ;; 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 20250725050000 20250712040000 46441 . ByoO5yua4uB8xhfFNQnEd3BdzjyLkB4OPCuLcsIZOe9q0A3A2Lg1VrIc2muf22w72Q3IrAVRAnPT nzcfFjQo19uqDkdbeMwiyWfoTSSmEJmggG3VIAgYmQ7ggMPMgpMykmovCZmsvHJaALGSTwmHm2oi Ja6AI3BaRuuFsdAmazfqcqT0lVDW18BF8skAvU2YKyt6KbT4833Dt4HTqwRAKtuy3mdLArnFkH4e uvifGcVxYNdgQfVfbdwQbeeyGB56UOdsqpgkDXn58VzxlcbwiLohMVCw0/2IaGkQTeYQX0sUi0qC EQmGYZgNtF7ByaJ4L96S6dHQivJScJyljtueMA== )`
	RRSIG=46441 and DNSKEY=46441 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 b.ns.nic.cz for cz/DNSKEY
	Received 289 bytes from 194.0.13.1
	;; Response received from [194.0.13.1] 289 octets ;; HEADER SECTION ;; id = 60539 ;; 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 fOZu5UZiFvWPhFuxvHbFbpdMGukUkQd2E8xAC3Z8GVmHklwkP8rDqR2YJm7hrOVvXD/eWA0HhyLn 5rUDz8IJWg== ) ; keytag 41804 cz. 3600 IN DNSKEY ( 257 3 13 nqzH7xP1QU5UOVy/VvxFSlrB/XgX9JDJzj51PzIj35TXjZTyalTlAT/f7PAfaSD5mEG1N8Vk9NmI 2nxgQqhzDQ== ) ; keytag 20237 cz. 3600 IN RRSIG ( DNSKEY 13 1 3600 20250721082134 20250707065134 20237 cz. AyFdaQ/lp1bQKJ/ZJkAoYwpCSYCJ9bemtNaHVTehgkSbGdSAFbimh1VyffTE6bRp4w0YYKTSWMts VE0yiEsGtA== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 2 DNSKEY records for cz
	`cz. 3600 IN DNSKEY ( 256 3 13 fOZu5UZiFvWPhFuxvHbFbpdMGukUkQd2E8xAC3Z8GVmHklwkP8rDqR2YJm7hrOVvXD/eWA0HhyLn 5rUDz8IJWg== ) ; keytag 41804`
	`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 20250721082134 20250707065134 20237 cz. AyFdaQ/lp1bQKJ/ZJkAoYwpCSYCJ9bemtNaHVTehgkSbGdSAFbimh1VyffTE6bRp4w0YYKTSWMts VE0yiEsGtA== )`
	RRSIG=20237 and DNSKEY=20237/SEP verifies the DNSKEY RRset
	DNSKEY=41804 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 = 29299 ;; 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 20250726055554 20250712042554 30052 nic.cz. mvCiCQDvNmoJ3C26cZFWx5lMUpVN3BZF48sHSJ5j4NSYcXFiJcomxYHlRcXnH1bT8Ta/R7Kuc7+X w5p2T+XmpQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	a.ns.nic.cz is authoritative for nic.cz
	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 = 63545 ;; 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 6GsNJ2rkrFe2+ZTwNIcWwrWANC51O1ukAByiaiNSIg8JbKUV9oNSSXQAgOCP7OQo1mztHmfwUy1k aP7GDxokSA== ) ; keytag 49159 nic.cz. 1800 IN DNSKEY ( 256 3 13 SW74mESZk+2+X4LkXuVlnAfxOhAfzv5+O1lvJPhIXluxdq/WLmK+foG+rkAzTkiwc/dIETFdt6bN 2lbGWwvQrQ== ) ; keytag 30052 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20250719072554 20250705055554 49159 nic.cz. 3qSV5KVeEOae32XbACrpeLOWMWeKb1L30PGaJrlYXkVrah7hzZQuG7Z3Pnwyj6TDJdoKE8bIgPP+ Spj+BhmLqg== ) ;; 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 = 22510 ;; 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 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 20250726055554 20250712042554 30052 nic.cz. 70HqG165SUfWClviZ1abNCkw72j7pGPJkrVRSqdaLoMJudEGjph3qn11Ihw+34gEbYDc3/tyl57l +5k3TZkXtA== ) ;; 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 20250726055554 20250712042554 30052 nic.cz. dO6CBeso0EG1hUmoIsKGGLdybERW7wNiQYPC+pCfxmxzxz7cOoA+N5jYqumI6BJHTciC+54tpQqP 2DASk10HFw== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250726055554 20250712042554 30052 nic.cz. x+lS3gaECfFSczm8i7RCyVtU7PLDBZ0/Sa8LBXJzpnbeLVK6LNP5GNV3951pkQSG/6OtN+n+jsMx c9qYrzwIAQ== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250726055554 20250712042554 30052 nic.cz. MKF/9JzGu6Tz+OOBHK61gjUj3Hby1Y/o7d15B+CwxcxNzyotyZNSEv0QmQ0uSp35rR6RjM5rELRJ jZy8EHipSQ== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250726055554 20250712042554 30052 nic.cz. P92ni5PjrrYHfMsugrsanXYoRlQW8SFRioYmG2qvlgH+Z/F9XYij9uaVD3itSmyBRhNi5XK24bVq Uqd5uvRe+A== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250726055554 20250712042554 30052 nic.cz. LgPFp7V/K1cJFRR782jMDjuyYTskjw52/l+OG4RIC5zXTeDYbKtgIPjxfwithT5WBDKD9vipZULo HvGJ1Tfrug== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250726055554 20250712042554 30052 nic.cz. YZ2QJxDDbsQFuEEWEPIvE7Xdf23CLcOMiw8pt7Iy6s8r+DmUJ7kwAJx9CSlH9773tjga+OOqFjHa qdb5Rkrcbg== ) ;; { "EDNS-VERSION": 0 }
	Found nic.cz nameservers: a.ns.nic.cz, b.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 = 10123 ;; 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 ( 49159 13 2 65817c32a315619201dffe78ddfcbb808de86bef81593ef6cd71485a98f74be9 ) nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20250716204654 20250702191654 41804 cz. i8JQyTOuhQXe98qLJjmZ3POkI+elOM7wc6AoyUbN0LuCeS58x43zzvwZ2YjECCwcjiEYdYmUaCHH kHm8BgChUg== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 1 DS records for nic.cz in the cz zone
	DS=49159/SHA-256 has algorithm ECDSAP256SHA256
	Found 1 RRSIGs over DS RRset
	`nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20250716204654 20250702191654 41804 cz. i8JQyTOuhQXe98qLJjmZ3POkI+elOM7wc6AoyUbN0LuCeS58x43zzvwZ2YjECCwcjiEYdYmUaCHH kHm8BgChUg== )`
	RRSIG=41804 and DNSKEY=41804 verifies the DS RRset
	DS=49159/SHA-256 is now in the chain-of-trust
	`nic.cz. 3600 IN DS ( 49159 13 2 65817c32a315619201dffe78ddfcbb808de86bef81593ef6cd71485a98f74be9 )`
	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 = 35514 ;; 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 6GsNJ2rkrFe2+ZTwNIcWwrWANC51O1ukAByiaiNSIg8JbKUV9oNSSXQAgOCP7OQo1mztHmfwUy1k aP7GDxokSA== ) ; keytag 49159 nic.cz. 1800 IN DNSKEY ( 256 3 13 SW74mESZk+2+X4LkXuVlnAfxOhAfzv5+O1lvJPhIXluxdq/WLmK+foG+rkAzTkiwc/dIETFdt6bN 2lbGWwvQrQ== ) ; keytag 30052 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20250719072554 20250705055554 49159 nic.cz. 3qSV5KVeEOae32XbACrpeLOWMWeKb1L30PGaJrlYXkVrah7hzZQuG7Z3Pnwyj6TDJdoKE8bIgPP+ Spj+BhmLqg== ) ;; 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 6GsNJ2rkrFe2+ZTwNIcWwrWANC51O1ukAByiaiNSIg8JbKUV9oNSSXQAgOCP7OQo1mztHmfwUy1k aP7GDxokSA== ) ; keytag 49159`
	`nic.cz. 1800 IN DNSKEY ( 256 3 13 SW74mESZk+2+X4LkXuVlnAfxOhAfzv5+O1lvJPhIXluxdq/WLmK+foG+rkAzTkiwc/dIETFdt6bN 2lbGWwvQrQ== ) ; keytag 30052`
	DNSKEY=49159/SEP is now in the chain-of-trust
	DS=49159/SHA-256 verifies DNSKEY=49159/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20250719072554 20250705055554 49159 nic.cz. 3qSV5KVeEOae32XbACrpeLOWMWeKb1L30PGaJrlYXkVrah7hzZQuG7Z3Pnwyj6TDJdoKE8bIgPP+ Spj+BhmLqg== )`
	RRSIG=49159 and DNSKEY=49159/SEP verifies the DNSKEY RRset
	DNSKEY=30052 is now in the chain-of-trust
	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 = 55015 ;; 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 20250726055554 20250712042554 30052 nic.cz. mvCiCQDvNmoJ3C26cZFWx5lMUpVN3BZF48sHSJ5j4NSYcXFiJcomxYHlRcXnH1bT8Ta/R7Kuc7+X w5p2T+XmpQ== ) ;; 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 a.ns.nic.cz for nic.cz/SOA
	Received 189 bytes from 194.0.12.1
	;; Response received from [194.0.12.1] 189 octets ;; HEADER SECTION ;; id = 1372 ;; 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. 1752299754 ;serial 14400 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20250726055554 20250712042554 30052 nic.cz. hY3cucMI1/tWQAx8zh5GlvN+UTIRPOV5Y5ka5JJZ03bfR4zQyrbsIV2MNqQH82pHIKavmVDl0tpj S1F/m+bghw== ) ;; 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 = 17481 ;; 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. 1752299754 ;serial 14400 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20250726055554 20250712042554 30052 nic.cz. hY3cucMI1/tWQAx8zh5GlvN+UTIRPOV5Y5ka5JJZ03bfR4zQyrbsIV2MNqQH82pHIKavmVDl0tpj S1F/m+bghw== ) ;; AUTHORITY SECTION (4 records) nic.cz. 1800 IN NS b.ns.nic.cz. nic.cz. 1800 IN NS d.ns.nic.cz. nic.cz. 1800 IN NS a.ns.nic.cz. nic.cz. 1800 IN RRSIG ( NS 13 2 1800 20250726055554 20250712042554 30052 nic.cz. 70HqG165SUfWClviZ1abNCkw72j7pGPJkrVRSqdaLoMJudEGjph3qn11Ihw+34gEbYDc3/tyl57l +5k3TZkXtA== ) ;; 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 20250726055554 20250712042554 30052 nic.cz. dO6CBeso0EG1hUmoIsKGGLdybERW7wNiQYPC+pCfxmxzxz7cOoA+N5jYqumI6BJHTciC+54tpQqP 2DASk10HFw== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250726055554 20250712042554 30052 nic.cz. x+lS3gaECfFSczm8i7RCyVtU7PLDBZ0/Sa8LBXJzpnbeLVK6LNP5GNV3951pkQSG/6OtN+n+jsMx c9qYrzwIAQ== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250726055554 20250712042554 30052 nic.cz. MKF/9JzGu6Tz+OOBHK61gjUj3Hby1Y/o7d15B+CwxcxNzyotyZNSEv0QmQ0uSp35rR6RjM5rELRJ jZy8EHipSQ== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250726055554 20250712042554 30052 nic.cz. P92ni5PjrrYHfMsugrsanXYoRlQW8SFRioYmG2qvlgH+Z/F9XYij9uaVD3itSmyBRhNi5XK24bVq Uqd5uvRe+A== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250726055554 20250712042554 30052 nic.cz. LgPFp7V/K1cJFRR782jMDjuyYTskjw52/l+OG4RIC5zXTeDYbKtgIPjxfwithT5WBDKD9vipZULo HvGJ1Tfrug== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250726055554 20250712042554 30052 nic.cz. YZ2QJxDDbsQFuEEWEPIvE7Xdf23CLcOMiw8pt7Iy6s8r+DmUJ7kwAJx9CSlH9773tjga+OOqFjHa qdb5Rkrcbg== ) ;; { "EDNS-VERSION": 0 }
	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 = 61572 ;; 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 20250726055554 20250712042554 30052 nic.cz. mvCiCQDvNmoJ3C26cZFWx5lMUpVN3BZF48sHSJ5j4NSYcXFiJcomxYHlRcXnH1bT8Ta/R7Kuc7+X w5p2T+XmpQ== ) ;; 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 20250726055554 20250712042554 30052 nic.cz. mvCiCQDvNmoJ3C26cZFWx5lMUpVN3BZF48sHSJ5j4NSYcXFiJcomxYHlRcXnH1bT8Ta/R7Kuc7+X w5p2T+XmpQ== )`
	RRSIG=30052 and DNSKEY=30052 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 = 3855 ;; 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 20250726055554 20250712042554 30052 nic.cz. mvCiCQDvNmoJ3C26cZFWx5lMUpVN3BZF48sHSJ5j4NSYcXFiJcomxYHlRcXnH1bT8Ta/R7Kuc7+X w5p2T+XmpQ== ) ;; 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 20250726055554 20250712042554 30052 nic.cz. 70HqG165SUfWClviZ1abNCkw72j7pGPJkrVRSqdaLoMJudEGjph3qn11Ihw+34gEbYDc3/tyl57l +5k3TZkXtA== ) ;; 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 20250726055554 20250712042554 30052 nic.cz. dO6CBeso0EG1hUmoIsKGGLdybERW7wNiQYPC+pCfxmxzxz7cOoA+N5jYqumI6BJHTciC+54tpQqP 2DASk10HFw== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250726055554 20250712042554 30052 nic.cz. x+lS3gaECfFSczm8i7RCyVtU7PLDBZ0/Sa8LBXJzpnbeLVK6LNP5GNV3951pkQSG/6OtN+n+jsMx c9qYrzwIAQ== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250726055554 20250712042554 30052 nic.cz. MKF/9JzGu6Tz+OOBHK61gjUj3Hby1Y/o7d15B+CwxcxNzyotyZNSEv0QmQ0uSp35rR6RjM5rELRJ jZy8EHipSQ== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250726055554 20250712042554 30052 nic.cz. P92ni5PjrrYHfMsugrsanXYoRlQW8SFRioYmG2qvlgH+Z/F9XYij9uaVD3itSmyBRhNi5XK24bVq Uqd5uvRe+A== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250726055554 20250712042554 30052 nic.cz. LgPFp7V/K1cJFRR782jMDjuyYTskjw52/l+OG4RIC5zXTeDYbKtgIPjxfwithT5WBDKD9vipZULo HvGJ1Tfrug== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250726055554 20250712042554 30052 nic.cz. YZ2QJxDDbsQFuEEWEPIvE7Xdf23CLcOMiw8pt7Iy6s8r+DmUJ7kwAJx9CSlH9773tjga+OOqFjHa qdb5Rkrcbg== ) ;; { "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 = 8194 ;; 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 20250726055554 20250712042554 30052 nic.cz. mvCiCQDvNmoJ3C26cZFWx5lMUpVN3BZF48sHSJ5j4NSYcXFiJcomxYHlRcXnH1bT8Ta/R7Kuc7+X w5p2T+XmpQ== ) ;; 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 20250726055554 20250712042554 30052 nic.cz. 70HqG165SUfWClviZ1abNCkw72j7pGPJkrVRSqdaLoMJudEGjph3qn11Ihw+34gEbYDc3/tyl57l +5k3TZkXtA== ) ;; 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 20250726055554 20250712042554 30052 nic.cz. dO6CBeso0EG1hUmoIsKGGLdybERW7wNiQYPC+pCfxmxzxz7cOoA+N5jYqumI6BJHTciC+54tpQqP 2DASk10HFw== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250726055554 20250712042554 30052 nic.cz. x+lS3gaECfFSczm8i7RCyVtU7PLDBZ0/Sa8LBXJzpnbeLVK6LNP5GNV3951pkQSG/6OtN+n+jsMx c9qYrzwIAQ== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250726055554 20250712042554 30052 nic.cz. MKF/9JzGu6Tz+OOBHK61gjUj3Hby1Y/o7d15B+CwxcxNzyotyZNSEv0QmQ0uSp35rR6RjM5rELRJ jZy8EHipSQ== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250726055554 20250712042554 30052 nic.cz. P92ni5PjrrYHfMsugrsanXYoRlQW8SFRioYmG2qvlgH+Z/F9XYij9uaVD3itSmyBRhNi5XK24bVq Uqd5uvRe+A== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20250726055554 20250712042554 30052 nic.cz. LgPFp7V/K1cJFRR782jMDjuyYTskjw52/l+OG4RIC5zXTeDYbKtgIPjxfwithT5WBDKD9vipZULo HvGJ1Tfrug== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20250726055554 20250712042554 30052 nic.cz. YZ2QJxDDbsQFuEEWEPIvE7Xdf23CLcOMiw8pt7Iy6s8r+DmUJ7kwAJx9CSlH9773tjga+OOqFjHa qdb5Rkrcbg== ) ;; { "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 20250726055554 20250712042554 30052 nic.cz. mvCiCQDvNmoJ3C26cZFWx5lMUpVN3BZF48sHSJ5j4NSYcXFiJcomxYHlRcXnH1bT8Ta/R7Kuc7+X w5p2T+XmpQ== )`
	RRSIG=30052 and DNSKEY=30052 verifies the A RRset

nic.cz

	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 = 57380 ;; 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 20250726055554 20250712042554 30052 nic.cz. mvCiCQDvNmoJ3C26cZFWx5lMUpVN3BZF48sHSJ5j4NSYcXFiJcomxYHlRcXnH1bT8Ta/R7Kuc7+X w5p2T+XmpQ== ) ;; 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 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 = 2771 ;; 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 20250726055554 20250712042554 30052 nic.cz. mvCiCQDvNmoJ3C26cZFWx5lMUpVN3BZF48sHSJ5j4NSYcXFiJcomxYHlRcXnH1bT8Ta/R7Kuc7+X w5p2T+XmpQ== ) ;; 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 20250726055554 20250712042554 30052 nic.cz. mvCiCQDvNmoJ3C26cZFWx5lMUpVN3BZF48sHSJ5j4NSYcXFiJcomxYHlRcXnH1bT8Ta/R7Kuc7+X w5p2T+XmpQ== )`
	RRSIG=30052 and DNSKEY=30052 verifies the A RRset

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