DNSSEC Debugger

Domain Name:

Time: 2026-03-21 19:25:34 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 1139 bytes from 170.247.170.2
	;; Response received from [170.247.170.2] 1139 octets ;; HEADER SECTION ;; id = 64715 ;; 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": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; . IN DNSKEY ;; ANSWER SECTION (4 records) . 172800 IN DNSKEY ( 256 3 8 AwEAAbNTVC2+pry4pc37pZI9Oj6b8FHxT3VGrvSPKLE1Tjyfe2kUZUtVX5xrv6AV4BVO+ygrYjGZ MNgEnbLU4zknnlnhI2e0g6iTza1aZh0dRZXGH16C1NUNq1CxBkUhIYQhQDeIOtLacx+RmFTc+hSH JJ2MJ79IS00kA7eKi6mofQ7SPJmdJVjI+JAx791y0f5QaB+iHGANU53FwiYXNUQjfAzCrtOaSevG sx8SO8BTaXLAjFq5eewOtwScVwfVDhEXlvpE6e+mIncwhNKaMRD9IPuHENqCNPI5MjxfAMVS6cEY 8eEozIkv/vHc+0Auu3n+Fcx6F2Js4KPXaHEShAXugfU= ) ; keytag 21831 . 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 20260402000000 20260312000000 20326 . hcmCK2q88XH00Hynv8IgIMVTKrwyb8Lh/uvRpqBPMALNQunyrS+VKrlKb6rBQTFnGHeVR/jj3Eay Uuxv4fy2evliMYKLrfTHtdqD3oUvJMnwmxEMmhS84Ttw+bbTcHeYxb52NFiYVHKb37Y0OWN4lr0p V+3fwFtWumb1NlWZDMNsaHFv6UIdxgUGNBVEyUaTAK6E2jseQcoqv6A0rNxCG+xtz2zSpRV2JM1g dC8zVAcc068OamqrwZlzKqsqAgXP78NOERrFkzffoRaSEmOORcAQpUdCK265DL1Y7Xeq0QaNEKd2 fXglm/IxS+4sMPT+83Q/XasxUu5C3d0qEz76fw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 3 DNSKEY records for .
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAbNTVC2+pry4pc37pZI9Oj6b8FHxT3VGrvSPKLE1Tjyfe2kUZUtVX5xrv6AV4BVO+ygrYjGZ MNgEnbLU4zknnlnhI2e0g6iTza1aZh0dRZXGH16C1NUNq1CxBkUhIYQhQDeIOtLacx+RmFTc+hSH JJ2MJ79IS00kA7eKi6mofQ7SPJmdJVjI+JAx791y0f5QaB+iHGANU53FwiYXNUQjfAzCrtOaSevG sx8SO8BTaXLAjFq5eewOtwScVwfVDhEXlvpE6e+mIncwhNKaMRD9IPuHENqCNPI5MjxfAMVS6cEY 8eEozIkv/vHc+0Auu3n+Fcx6F2Js4KPXaHEShAXugfU= ) ; keytag 21831`
	`. 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 20260402000000 20260312000000 20326 . hcmCK2q88XH00Hynv8IgIMVTKrwyb8Lh/uvRpqBPMALNQunyrS+VKrlKb6rBQTFnGHeVR/jj3Eay Uuxv4fy2evliMYKLrfTHtdqD3oUvJMnwmxEMmhS84Ttw+bbTcHeYxb52NFiYVHKb37Y0OWN4lr0p V+3fwFtWumb1NlWZDMNsaHFv6UIdxgUGNBVEyUaTAK6E2jseQcoqv6A0rNxCG+xtz2zSpRV2JM1g dC8zVAcc068OamqrwZlzKqsqAgXP78NOERrFkzffoRaSEmOORcAQpUdCK265DL1Y7Xeq0QaNEKd2 fXglm/IxS+4sMPT+83Q/XasxUu5C3d0qEz76fw== )`
	RRSIG=20326 and DNSKEY=20326/SEP verifies the DNSKEY RRset
	DNSKEY=21831 is now in the chain-of-trust
	DNSKEY=38696/SEP is now in the chain-of-trust
	Query to b.root-servers.net for nic.cz/A
	Received 613 bytes from 170.247.170.2
	;; Response received from [170.247.170.2] 613 octets ;; HEADER SECTION ;; id = 37142 ;; 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 20260403170000 20260321160000 21831 . mV6iiPlq0cM12z+SU9GrZ+sdTQJdyrbR/mu6zwtGYSZQXP4pXez9Ydu9Qj/cM/NWVZCOHMHJgHxn ip8QH617rH+M6//WtHLECTZiZ9Iarc4DViINuR4MWpMdQf2w7nHApdO0UGk6eXN8S5+RqQCfcI4D qeU2zBksrWxOY0BouI9TJyethYfJC/AMaSvyepoVDoatA1jaS7/19OtWNiGLElOgd1HW3UJP8B3h 5Kv7L6o/UjQbs6CAamkS68uM2fGjI16iVbydlYv4/18rAphFdWHmPZICfnBZ5Rh3iPSCTO727Eh0 haNIfV8J+hs3za0ISWPnyVmAGH72uvnmLisLhQ== ) ;; 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 }
	Query to j.root-servers.net for cz/DNSKEY
	Received 613 bytes from 192.58.128.30
	;; Response received from [192.58.128.30] 613 octets ;; HEADER SECTION ;; id = 8307 ;; 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 20260403170000 20260321160000 21831 . mV6iiPlq0cM12z+SU9GrZ+sdTQJdyrbR/mu6zwtGYSZQXP4pXez9Ydu9Qj/cM/NWVZCOHMHJgHxn ip8QH617rH+M6//WtHLECTZiZ9Iarc4DViINuR4MWpMdQf2w7nHApdO0UGk6eXN8S5+RqQCfcI4D qeU2zBksrWxOY0BouI9TJyethYfJC/AMaSvyepoVDoatA1jaS7/19OtWNiGLElOgd1HW3UJP8B3h 5Kv7L6o/UjQbs6CAamkS68uM2fGjI16iVbydlYv4/18rAphFdWHmPZICfnBZ5Rh3iPSCTO727Eh0 haNIfV8J+hs3za0ISWPnyVmAGH72uvnmLisLhQ== ) ;; 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 f.root-servers.net for cz/DS
	Received 366 bytes from 192.5.5.241
	;; Response received from [192.5.5.241] 366 octets ;; HEADER SECTION ;; id = 42838 ;; 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": 1472, ;; "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 20260403170000 20260321160000 21831 . mV6iiPlq0cM12z+SU9GrZ+sdTQJdyrbR/mu6zwtGYSZQXP4pXez9Ydu9Qj/cM/NWVZCOHMHJgHxn ip8QH617rH+M6//WtHLECTZiZ9Iarc4DViINuR4MWpMdQf2w7nHApdO0UGk6eXN8S5+RqQCfcI4D qeU2zBksrWxOY0BouI9TJyethYfJC/AMaSvyepoVDoatA1jaS7/19OtWNiGLElOgd1HW3UJP8B3h 5Kv7L6o/UjQbs6CAamkS68uM2fGjI16iVbydlYv4/18rAphFdWHmPZICfnBZ5Rh3iPSCTO727Eh0 haNIfV8J+hs3za0ISWPnyVmAGH72uvnmLisLhQ== ) ;; 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 20260403170000 20260321160000 21831 . mV6iiPlq0cM12z+SU9GrZ+sdTQJdyrbR/mu6zwtGYSZQXP4pXez9Ydu9Qj/cM/NWVZCOHMHJgHxn ip8QH617rH+M6//WtHLECTZiZ9Iarc4DViINuR4MWpMdQf2w7nHApdO0UGk6eXN8S5+RqQCfcI4D qeU2zBksrWxOY0BouI9TJyethYfJC/AMaSvyepoVDoatA1jaS7/19OtWNiGLElOgd1HW3UJP8B3h 5Kv7L6o/UjQbs6CAamkS68uM2fGjI16iVbydlYv4/18rAphFdWHmPZICfnBZ5Rh3iPSCTO727Eh0 haNIfV8J+hs3za0ISWPnyVmAGH72uvnmLisLhQ== )`
	RRSIG=21831 and DNSKEY=21831 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 = 40186 ;; 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 /QZiUtsFBvYTYpm5h79iYeRGrGkKn5aUijLbACd0gyZFnGOyU4pJKimxchG+a3yBCkwa5+7rHwSG /KoeXPOMSQ== ) ; keytag 34943 cz. 3600 IN DNSKEY ( 257 3 13 nqzH7xP1QU5UOVy/VvxFSlrB/XgX9JDJzj51PzIj35TXjZTyalTlAT/f7PAfaSD5mEG1N8Vk9NmI 2nxgQqhzDQ== ) ; keytag 20237 cz. 3600 IN RRSIG ( DNSKEY 13 1 3600 20260402002134 20260318225134 20237 cz. GmtmBVnpEoLKfm2533ESjx4itMPoPpyZd8APNFR8xNGIGeD68BsUuy5m3qg9PV0f88oQQh4HAcJC s2MnORit7w== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 2 DNSKEY records for cz
	`cz. 3600 IN DNSKEY ( 256 3 13 /QZiUtsFBvYTYpm5h79iYeRGrGkKn5aUijLbACd0gyZFnGOyU4pJKimxchG+a3yBCkwa5+7rHwSG /KoeXPOMSQ== ) ; keytag 34943`
	`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 20260402002134 20260318225134 20237 cz. GmtmBVnpEoLKfm2533ESjx4itMPoPpyZd8APNFR8xNGIGeD68BsUuy5m3qg9PV0f88oQQh4HAcJC s2MnORit7w== )`
	RRSIG=20237 and DNSKEY=20237/SEP verifies the DNSKEY RRset
	DNSKEY=34943 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 = 60278 ;; 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 20260330175554 20260316162554 30024 nic.cz. wwFeqYDGqfLUZLslcXmpy9M8tOEvUdKSQYAQWE+PYuhF1HEDGLKZkdmv2zOBWNP4i9abGirK37Se VhXPWNomGQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	b.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 = 51930 ;; 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 wBX0ujHsmyqO3RLeuFaBRJeOCQBE8IOhHAEwDVurWvfJK5Vqm+VsJijDVZ5ZHgthGXvDcSG0+t06 qCCi+f4P4A== ) ; keytag 30024 nic.cz. 1800 IN DNSKEY ( 257 3 13 IaVXWWb3ILsdAgjjoD85/9/1viwX3gnpegFAilCKOyHUlPeVSzmxV3hNcU79/x8/IFaNJKNwiKoS o2+2Xf3nCQ== ) ; keytag 31633 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20260330192554 20260316175554 31633 nic.cz. k4LeABKjJFjIwO7kCDbY+NPUjuUl53Np5IXJGHqwxjea9HJcYgXaLRs9Ru1YL50uXQP2r4Om4g5j MtRn07cQMw== ) ;; 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 a.ns.nic.cz for nic.cz/NS
	Received 932 bytes from 194.0.12.1
	;; Response received from [194.0.12.1] 932 octets ;; HEADER SECTION ;; id = 5864 ;; 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 20260330175554 20260316162554 30024 nic.cz. 5x36VusW28j/hU0DRDeJAIWTATJL7RN9avpdmpPnLhr9Nqyny9E2drj53AVvuXLtVpD1UPgN3APd +8aiSQrziA== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (13 records) a.ns.nic.cz. 1800 IN A 194.0.12.1 a.ns.nic.cz. 1800 IN AAAA 2001:678:f::1 b.ns.nic.cz. 1800 IN A 194.0.13.1 b.ns.nic.cz. 1800 IN AAAA 2001:678:10::1 d.ns.nic.cz. 1800 IN A 193.29.206.1 d.ns.nic.cz. 1800 IN AAAA 2001:678:1::1 a.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20260330175554 20260316162554 30024 nic.cz. dv8do5LMFy/30tlsNDSFl8BAtyqBgRuuQ9emuZYSOT8jyiHcm4AaWiiDBM/ARh9eZYSeeT99gC+r WHgW7H/LFg== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20260330175554 20260316162554 30024 nic.cz. N8CJYvxdj+fy7EY/6ITGIaK1Kv1UYkBBs48TzWP/3NcpCXcvLXjj90L1KtL7vc0M/gGL09H5camK sYFOU/83GQ== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20260330175554 20260316162554 30024 nic.cz. V9BngMblWCGpLGmiK1pvz1MbYOnbvcs83+v6ltA1UKtzoUv90Taq3v2GTlZVvkcqYqVq/duOCVuR O2ch1Wzcfg== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20260330175554 20260316162554 30024 nic.cz. y8kmoZRbgCd2CZwkp8nx2DCM2FmsBojlDSTowNIryBNSnZy4J9vGODXKFz9pbEHkcgvt0KWOXyzS UalpHWcR0g== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20260330175554 20260316162554 30024 nic.cz. MeXmoqQGNbxOy2RnvIEA/PN4AMUOSa2jEZR9IXcb7/SBUrKHdltp8wTiGBFHfqrEdmiH13tedHdd C+iW7I8D3A== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20260330175554 20260316162554 30024 nic.cz. I9c/jXhdQQH+6yCvb7SI6xPfdUvyLkW1nI7UQNg/U/DTGMtlTFFgVR0EaAYQ/E4jaB/TGvxu6DYY JX2sr2TmLA== ) ;; { "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 b.ns.nic.cz for nic.cz/DS
	Received 181 bytes from 194.0.13.1
	;; Response received from [194.0.13.1] 181 octets ;; HEADER SECTION ;; id = 47439 ;; 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 ( 31633 13 2 00e55ee6e846a3e953360c6433668cf7d487a8e82933160be4b3826c664cd9c6 ) nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20260327184717 20260313171717 34943 cz. JVpP5TvK8VtLKHYab58U59FeAqki0a/2iCvowyvRx2JpmFpclH08ydi+yAmQwG+96mYk34VfKmyh oKXa3mHMHQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 1 DS records for nic.cz in the cz zone
	DS=31633/SHA-256 has algorithm ECDSAP256SHA256
	Found 1 RRSIGs over DS RRset
	`nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20260327184717 20260313171717 34943 cz. JVpP5TvK8VtLKHYab58U59FeAqki0a/2iCvowyvRx2JpmFpclH08ydi+yAmQwG+96mYk34VfKmyh oKXa3mHMHQ== )`
	RRSIG=34943 and DNSKEY=34943 verifies the DS RRset
	DS=31633/SHA-256 is now in the chain-of-trust
	`nic.cz. 3600 IN DS ( 31633 13 2 00e55ee6e846a3e953360c6433668cf7d487a8e82933160be4b3826c664cd9c6 )`
	Query to a.ns.nic.cz for nic.cz/DNSKEY
	Received 297 bytes from 194.0.12.1
	;; Response received from [194.0.12.1] 297 octets ;; HEADER SECTION ;; id = 53431 ;; 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 wBX0ujHsmyqO3RLeuFaBRJeOCQBE8IOhHAEwDVurWvfJK5Vqm+VsJijDVZ5ZHgthGXvDcSG0+t06 qCCi+f4P4A== ) ; keytag 30024 nic.cz. 1800 IN DNSKEY ( 257 3 13 IaVXWWb3ILsdAgjjoD85/9/1viwX3gnpegFAilCKOyHUlPeVSzmxV3hNcU79/x8/IFaNJKNwiKoS o2+2Xf3nCQ== ) ; keytag 31633 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20260330192554 20260316175554 31633 nic.cz. k4LeABKjJFjIwO7kCDbY+NPUjuUl53Np5IXJGHqwxjea9HJcYgXaLRs9Ru1YL50uXQP2r4Om4g5j MtRn07cQMw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 2 DNSKEY records for nic.cz
	`nic.cz. 1800 IN DNSKEY ( 256 3 13 wBX0ujHsmyqO3RLeuFaBRJeOCQBE8IOhHAEwDVurWvfJK5Vqm+VsJijDVZ5ZHgthGXvDcSG0+t06 qCCi+f4P4A== ) ; keytag 30024`
	`nic.cz. 1800 IN DNSKEY ( 257 3 13 IaVXWWb3ILsdAgjjoD85/9/1viwX3gnpegFAilCKOyHUlPeVSzmxV3hNcU79/x8/IFaNJKNwiKoS o2+2Xf3nCQ== ) ; keytag 31633`
	DNSKEY=31633/SEP is now in the chain-of-trust
	DS=31633/SHA-256 verifies DNSKEY=31633/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20260330192554 20260316175554 31633 nic.cz. k4LeABKjJFjIwO7kCDbY+NPUjuUl53Np5IXJGHqwxjea9HJcYgXaLRs9Ru1YL50uXQP2r4Om4g5j MtRn07cQMw== )`
	RRSIG=31633 and DNSKEY=31633/SEP verifies the DNSKEY RRset
	DNSKEY=30024 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 = 14068 ;; 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 20260330175554 20260316162554 30024 nic.cz. wwFeqYDGqfLUZLslcXmpy9M8tOEvUdKSQYAQWE+PYuhF1HEDGLKZkdmv2zOBWNP4i9abGirK37Se VhXPWNomGQ== ) ;; 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 = 57453 ;; 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. 1774105290 ;serial 14400 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20260404150130 20260321133130 30024 nic.cz. T5TAwTRhRTklIIXehSQKbWW0ZWT/gkIh/BL1vIPes+dVV7skVRRz9geX/3u8RLCHOE+MqI0Iic6U iZ4boGiKMA== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Query to d.ns.nic.cz for nic.cz/SOA
	Received 1081 bytes from 193.29.206.1
	;; Response received from [193.29.206.1] 1081 octets ;; HEADER SECTION ;; id = 19304 ;; 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. 1774105290 ;serial 14400 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20260404150130 20260321133130 30024 nic.cz. T5TAwTRhRTklIIXehSQKbWW0ZWT/gkIh/BL1vIPes+dVV7skVRRz9geX/3u8RLCHOE+MqI0Iic6U iZ4boGiKMA== ) ;; 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 20260330175554 20260316162554 30024 nic.cz. 5x36VusW28j/hU0DRDeJAIWTATJL7RN9avpdmpPnLhr9Nqyny9E2drj53AVvuXLtVpD1UPgN3APd +8aiSQrziA== ) ;; 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 20260330175554 20260316162554 30024 nic.cz. dv8do5LMFy/30tlsNDSFl8BAtyqBgRuuQ9emuZYSOT8jyiHcm4AaWiiDBM/ARh9eZYSeeT99gC+r WHgW7H/LFg== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20260330175554 20260316162554 30024 nic.cz. N8CJYvxdj+fy7EY/6ITGIaK1Kv1UYkBBs48TzWP/3NcpCXcvLXjj90L1KtL7vc0M/gGL09H5camK sYFOU/83GQ== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20260330175554 20260316162554 30024 nic.cz. V9BngMblWCGpLGmiK1pvz1MbYOnbvcs83+v6ltA1UKtzoUv90Taq3v2GTlZVvkcqYqVq/duOCVuR O2ch1Wzcfg== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20260330175554 20260316162554 30024 nic.cz. y8kmoZRbgCd2CZwkp8nx2DCM2FmsBojlDSTowNIryBNSnZy4J9vGODXKFz9pbEHkcgvt0KWOXyzS UalpHWcR0g== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20260330175554 20260316162554 30024 nic.cz. MeXmoqQGNbxOy2RnvIEA/PN4AMUOSa2jEZR9IXcb7/SBUrKHdltp8wTiGBFHfqrEdmiH13tedHdd C+iW7I8D3A== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20260330175554 20260316162554 30024 nic.cz. I9c/jXhdQQH+6yCvb7SI6xPfdUvyLkW1nI7UQNg/U/DTGMtlTFFgVR0EaAYQ/E4jaB/TGvxu6DYY JX2sr2TmLA== ) ;; { "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 = 44462 ;; 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 20260330175554 20260316162554 30024 nic.cz. wwFeqYDGqfLUZLslcXmpy9M8tOEvUdKSQYAQWE+PYuhF1HEDGLKZkdmv2zOBWNP4i9abGirK37Se VhXPWNomGQ== ) ;; 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 20260330175554 20260316162554 30024 nic.cz. wwFeqYDGqfLUZLslcXmpy9M8tOEvUdKSQYAQWE+PYuhF1HEDGLKZkdmv2zOBWNP4i9abGirK37Se VhXPWNomGQ== )`
	RRSIG=30024 and DNSKEY=30024 verifies the A RRset

nic.cz

	Query to d.ns.nic.cz for nic.cz/A
	Received 1050 bytes from 193.29.206.1
	;; Response received from [193.29.206.1] 1050 octets ;; HEADER SECTION ;; id = 20777 ;; 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 20260330175554 20260316162554 30024 nic.cz. wwFeqYDGqfLUZLslcXmpy9M8tOEvUdKSQYAQWE+PYuhF1HEDGLKZkdmv2zOBWNP4i9abGirK37Se VhXPWNomGQ== ) ;; 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 20260330175554 20260316162554 30024 nic.cz. 5x36VusW28j/hU0DRDeJAIWTATJL7RN9avpdmpPnLhr9Nqyny9E2drj53AVvuXLtVpD1UPgN3APd +8aiSQrziA== ) ;; 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 20260330175554 20260316162554 30024 nic.cz. dv8do5LMFy/30tlsNDSFl8BAtyqBgRuuQ9emuZYSOT8jyiHcm4AaWiiDBM/ARh9eZYSeeT99gC+r WHgW7H/LFg== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20260330175554 20260316162554 30024 nic.cz. N8CJYvxdj+fy7EY/6ITGIaK1Kv1UYkBBs48TzWP/3NcpCXcvLXjj90L1KtL7vc0M/gGL09H5camK sYFOU/83GQ== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20260330175554 20260316162554 30024 nic.cz. V9BngMblWCGpLGmiK1pvz1MbYOnbvcs83+v6ltA1UKtzoUv90Taq3v2GTlZVvkcqYqVq/duOCVuR O2ch1Wzcfg== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20260330175554 20260316162554 30024 nic.cz. y8kmoZRbgCd2CZwkp8nx2DCM2FmsBojlDSTowNIryBNSnZy4J9vGODXKFz9pbEHkcgvt0KWOXyzS UalpHWcR0g== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20260330175554 20260316162554 30024 nic.cz. MeXmoqQGNbxOy2RnvIEA/PN4AMUOSa2jEZR9IXcb7/SBUrKHdltp8wTiGBFHfqrEdmiH13tedHdd C+iW7I8D3A== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20260330175554 20260316162554 30024 nic.cz. I9c/jXhdQQH+6yCvb7SI6xPfdUvyLkW1nI7UQNg/U/DTGMtlTFFgVR0EaAYQ/E4jaB/TGvxu6DYY JX2sr2TmLA== ) ;; { "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 1050 bytes from 193.29.206.1
	;; Response received from [193.29.206.1] 1050 octets ;; HEADER SECTION ;; id = 56333 ;; 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 20260330175554 20260316162554 30024 nic.cz. wwFeqYDGqfLUZLslcXmpy9M8tOEvUdKSQYAQWE+PYuhF1HEDGLKZkdmv2zOBWNP4i9abGirK37Se VhXPWNomGQ== ) ;; 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 20260330175554 20260316162554 30024 nic.cz. 5x36VusW28j/hU0DRDeJAIWTATJL7RN9avpdmpPnLhr9Nqyny9E2drj53AVvuXLtVpD1UPgN3APd +8aiSQrziA== ) ;; 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 20260330175554 20260316162554 30024 nic.cz. dv8do5LMFy/30tlsNDSFl8BAtyqBgRuuQ9emuZYSOT8jyiHcm4AaWiiDBM/ARh9eZYSeeT99gC+r WHgW7H/LFg== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20260330175554 20260316162554 30024 nic.cz. N8CJYvxdj+fy7EY/6ITGIaK1Kv1UYkBBs48TzWP/3NcpCXcvLXjj90L1KtL7vc0M/gGL09H5camK sYFOU/83GQ== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20260330175554 20260316162554 30024 nic.cz. V9BngMblWCGpLGmiK1pvz1MbYOnbvcs83+v6ltA1UKtzoUv90Taq3v2GTlZVvkcqYqVq/duOCVuR O2ch1Wzcfg== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20260330175554 20260316162554 30024 nic.cz. y8kmoZRbgCd2CZwkp8nx2DCM2FmsBojlDSTowNIryBNSnZy4J9vGODXKFz9pbEHkcgvt0KWOXyzS UalpHWcR0g== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20260330175554 20260316162554 30024 nic.cz. MeXmoqQGNbxOy2RnvIEA/PN4AMUOSa2jEZR9IXcb7/SBUrKHdltp8wTiGBFHfqrEdmiH13tedHdd C+iW7I8D3A== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20260330175554 20260316162554 30024 nic.cz. I9c/jXhdQQH+6yCvb7SI6xPfdUvyLkW1nI7UQNg/U/DTGMtlTFFgVR0EaAYQ/E4jaB/TGvxu6DYY JX2sr2TmLA== ) ;; { "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 20260330175554 20260316162554 30024 nic.cz. wwFeqYDGqfLUZLslcXmpy9M8tOEvUdKSQYAQWE+PYuhF1HEDGLKZkdmv2zOBWNP4i9abGirK37Se VhXPWNomGQ== )`
	RRSIG=30024 and DNSKEY=30024 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 = 32253 ;; 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 20260330175554 20260316162554 30024 nic.cz. wwFeqYDGqfLUZLslcXmpy9M8tOEvUdKSQYAQWE+PYuhF1HEDGLKZkdmv2zOBWNP4i9abGirK37Se VhXPWNomGQ== ) ;; 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 = 31946 ;; 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 20260330175554 20260316162554 30024 nic.cz. wwFeqYDGqfLUZLslcXmpy9M8tOEvUdKSQYAQWE+PYuhF1HEDGLKZkdmv2zOBWNP4i9abGirK37Se VhXPWNomGQ== ) ;; 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 20260330175554 20260316162554 30024 nic.cz. wwFeqYDGqfLUZLslcXmpy9M8tOEvUdKSQYAQWE+PYuhF1HEDGLKZkdmv2zOBWNP4i9abGirK37Se VhXPWNomGQ== )`
	RRSIG=30024 and DNSKEY=30024 verifies the A RRset

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