DNSSEC Debugger

Domain Name:

Time: 2025-10-21 03:37:17 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 j.root-servers.net for ./DNSKEY
	Received 1139 bytes from 192.58.128.30
	;; Response received from [192.58.128.30] 1139 octets ;; HEADER SECTION ;; id = 49795 ;; 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": 1472, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; . IN DNSKEY ;; ANSWER SECTION (4 records) . 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 AwEAAeuS7hMRZ7muj1c/ew2DoavxkBw3jUG5R79pKVDI39fxvlD1HfJYGJERnXuV4SrQfUPzWw/l t5Axb0EqXL/sQ2ZyntVmwQwoSXi2l9smlIKh2UrkTmmozRCPe7GS4fZTE4Ew7AV4YprTLgVmxiGP 4unRuXkYOgQJXCIBpVCmEdUli6X2sm0i5ZilU/Q+rX3RDw+eYPP7K0cJnJ+ZnvQDy14+BFtreWl9 enNQljgGpBp26lEp1z7AbvUfzkQNVCVGaM8jEaCSALXiROlwCQMOdj+tpLXFf99kdJnTQw2cpEr1 uGs/yENAJpoGhbjZAoIkXzDUBSlfFeYz7FWzH6gIe7M= ) ; keytag 61809 . 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 RRSIG ( DNSKEY 8 0 172800 20251101000000 20251011000000 20326 . HBzw8cFD6K0/BBO1rLi2ifcFatkMvobiLzZgaMOb9hMqRuMKM0jVSVif5LpAb0OOTQOcSzZMOF17 Ps7BkxWqTGOAQQH5wrS0aLJ/Hn4UAIC/ZK+JbeGo9c1ZhcA8LUyvv32ACT0in2oY7RyTG1+MLpUo rMdUNUII2PAaYuU+Svu8/1HJhuONGl9IqokaWK6yFCm9rz+azS04kq2GPMGHXqJVX7jbZO4tq4fg VKYvW5wJpRM9VE4VOGmHzQUe0OJsDGViys65RNtzzR8MefC9jZGGKO8s8G0n24VmT9Kg2/4y4Qen knUytutLNIMFFmiUsJjx8gcakkkiIvwGed+/cg== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 3 DNSKEY records for .
	`. 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 AwEAAeuS7hMRZ7muj1c/ew2DoavxkBw3jUG5R79pKVDI39fxvlD1HfJYGJERnXuV4SrQfUPzWw/l t5Axb0EqXL/sQ2ZyntVmwQwoSXi2l9smlIKh2UrkTmmozRCPe7GS4fZTE4Ew7AV4YprTLgVmxiGP 4unRuXkYOgQJXCIBpVCmEdUli6X2sm0i5ZilU/Q+rX3RDw+eYPP7K0cJnJ+ZnvQDy14+BFtreWl9 enNQljgGpBp26lEp1z7AbvUfzkQNVCVGaM8jEaCSALXiROlwCQMOdj+tpLXFf99kdJnTQw2cpEr1 uGs/yENAJpoGhbjZAoIkXzDUBSlfFeYz7FWzH6gIe7M= ) ; keytag 61809`
	`. 172800 IN DNSKEY ( 257 3 8 AwEAAaz/tAm8yTn4Mfeh5eyI96WSVexTBAvkMgJzkKTOiW1vkIbzxeF3+/4RgWOq7HrxRixHlFlE xOLAJr5emLvN7SWXgnLh4+B5xQlNVz8Og8kvArMtNROxVQuCaSnIDdD5LKyWbRd2n9WGe2R8PzgC mr3EgVLrjyBxWezF0jLHwVN8efS3rCj/EWgvIWgb9tarpVUDK/b58Da+sqqls3eNbuv7pr+eoZG+ SrDK6nWeL3c6H5Apxz7LjVc1uTIdsIXxuOLYA4/ilBmSVIzuDWfdRUfhHdY6+cn8HFRm+2hM8AnX GXws9555KrUB5qihylGa8subX2Nn6UwNR1AkUTV74bU= ) ; keytag 20326`
	DNSKEY=20326/SEP is now in the chain-of-trust
	DS=20326/SHA-256 verifies DNSKEY=20326/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`. 172800 IN RRSIG ( DNSKEY 8 0 172800 20251101000000 20251011000000 20326 . HBzw8cFD6K0/BBO1rLi2ifcFatkMvobiLzZgaMOb9hMqRuMKM0jVSVif5LpAb0OOTQOcSzZMOF17 Ps7BkxWqTGOAQQH5wrS0aLJ/Hn4UAIC/ZK+JbeGo9c1ZhcA8LUyvv32ACT0in2oY7RyTG1+MLpUo rMdUNUII2PAaYuU+Svu8/1HJhuONGl9IqokaWK6yFCm9rz+azS04kq2GPMGHXqJVX7jbZO4tq4fg VKYvW5wJpRM9VE4VOGmHzQUe0OJsDGViys65RNtzzR8MefC9jZGGKO8s8G0n24VmT9Kg2/4y4Qen knUytutLNIMFFmiUsJjx8gcakkkiIvwGed+/cg== )`
	RRSIG=20326 and DNSKEY=20326/SEP verifies the DNSKEY RRset
	DNSKEY=38696/SEP is now in the chain-of-trust
	DNSKEY=61809 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 = 25847 ;; 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 20251102170000 20251020160000 61809 . t7oSXPC+ahX4Djgqv7fveV2DhCqj0ErvVt5Wm27n6MTu8NKFaBacbaebJhu9XwYT4pcoQ1YRsy5T 4k0zZEa0s20AD44Fl9w7jRdOd0bm9jmXj9sK8db0S11BjD5YDTcUUhiE0gNfWHkUPtuXwTgbO3rZ SUMmGRuVQZuI4rye5Umg16MxRBU1IkYI4gIsgjdM0tMeI9eAObhhwdyuh94Uz8myIozgYXgu8cO6 bis4cZZmuhGMk5aeyepa0BW/Jes1HuI1/JNUz+lMNyqHX8Ot0ZGObVdcqXIfSCslbtbD0KuZxOjI tmI+5A1/HdsKCnACYHeyAabIK/NG3//TULncxg== ) ;; 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 f.root-servers.net for cz/DNSKEY
	Received 613 bytes from 192.5.5.241
	;; Response received from [192.5.5.241] 613 octets ;; HEADER SECTION ;; id = 30612 ;; 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 20251102170000 20251020160000 61809 . t7oSXPC+ahX4Djgqv7fveV2DhCqj0ErvVt5Wm27n6MTu8NKFaBacbaebJhu9XwYT4pcoQ1YRsy5T 4k0zZEa0s20AD44Fl9w7jRdOd0bm9jmXj9sK8db0S11BjD5YDTcUUhiE0gNfWHkUPtuXwTgbO3rZ SUMmGRuVQZuI4rye5Umg16MxRBU1IkYI4gIsgjdM0tMeI9eAObhhwdyuh94Uz8myIozgYXgu8cO6 bis4cZZmuhGMk5aeyepa0BW/Jes1HuI1/JNUz+lMNyqHX8Ot0ZGObVdcqXIfSCslbtbD0KuZxOjI tmI+5A1/HdsKCnACYHeyAabIK/NG3//TULncxg== ) ;; 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 = 47534 ;; 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 20251102170000 20251020160000 61809 . t7oSXPC+ahX4Djgqv7fveV2DhCqj0ErvVt5Wm27n6MTu8NKFaBacbaebJhu9XwYT4pcoQ1YRsy5T 4k0zZEa0s20AD44Fl9w7jRdOd0bm9jmXj9sK8db0S11BjD5YDTcUUhiE0gNfWHkUPtuXwTgbO3rZ SUMmGRuVQZuI4rye5Umg16MxRBU1IkYI4gIsgjdM0tMeI9eAObhhwdyuh94Uz8myIozgYXgu8cO6 bis4cZZmuhGMk5aeyepa0BW/Jes1HuI1/JNUz+lMNyqHX8Ot0ZGObVdcqXIfSCslbtbD0KuZxOjI tmI+5A1/HdsKCnACYHeyAabIK/NG3//TULncxg== ) ;; 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 20251102170000 20251020160000 61809 . t7oSXPC+ahX4Djgqv7fveV2DhCqj0ErvVt5Wm27n6MTu8NKFaBacbaebJhu9XwYT4pcoQ1YRsy5T 4k0zZEa0s20AD44Fl9w7jRdOd0bm9jmXj9sK8db0S11BjD5YDTcUUhiE0gNfWHkUPtuXwTgbO3rZ SUMmGRuVQZuI4rye5Umg16MxRBU1IkYI4gIsgjdM0tMeI9eAObhhwdyuh94Uz8myIozgYXgu8cO6 bis4cZZmuhGMk5aeyepa0BW/Jes1HuI1/JNUz+lMNyqHX8Ot0ZGObVdcqXIfSCslbtbD0KuZxOjI tmI+5A1/HdsKCnACYHeyAabIK/NG3//TULncxg== )`
	RRSIG=61809 and DNSKEY=61809 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 = 55784 ;; 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 Ldm3tOZ5N8Mxf+g5nBj/HerGvw2xg3DNiaI0erbNuQlpiRRHuzi+Yv6Eb0NYleimT9q+eKYJCZOC axMg4KjhHA== ) ; keytag 29331 cz. 3600 IN DNSKEY ( 257 3 13 nqzH7xP1QU5UOVy/VvxFSlrB/XgX9JDJzj51PzIj35TXjZTyalTlAT/f7PAfaSD5mEG1N8Vk9NmI 2nxgQqhzDQ== ) ; keytag 20237 cz. 3600 IN RRSIG ( DNSKEY 13 1 3600 20251102142134 20251019125134 20237 cz. 3nM4tO3CDz5eBjv86Zxt6BSsYcyDCUUILdfroktMgXwe12MIvbuiQOEvadvb6T+UPY9JyumuFwGO TKTS58ic7A== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 2 DNSKEY records for cz
	`cz. 3600 IN DNSKEY ( 256 3 13 Ldm3tOZ5N8Mxf+g5nBj/HerGvw2xg3DNiaI0erbNuQlpiRRHuzi+Yv6Eb0NYleimT9q+eKYJCZOC axMg4KjhHA== ) ; keytag 29331`
	`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 20251102142134 20251019125134 20237 cz. 3nM4tO3CDz5eBjv86Zxt6BSsYcyDCUUILdfroktMgXwe12MIvbuiQOEvadvb6T+UPY9JyumuFwGO TKTS58ic7A== )`
	RRSIG=20237 and DNSKEY=20237/SEP verifies the DNSKEY RRset
	DNSKEY=29331 is now in the chain-of-trust
	Query to c.ns.nic.cz for nic.cz/A
	Received 1056 bytes from 194.0.14.1
	;; Response received from [194.0.14.1] 1056 octets ;; HEADER SECTION ;; id = 49029 ;; 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 20251031102554 20251017085554 22747 nic.cz. QdFaQ8zjI5if5/rWABmxNgKmemq8SBkQDCpeq6ajZo283eWbf9eeyan2UX/TLRVpwKmMuko8ix00 b9W3LMYYoQ== ) ;; 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 20251031102554 20251017085554 22747 nic.cz. CljYLCzyrPNQ1Ogw1oZ7OZP8BjhvL0jWuQMB4J3MyUFa/sjdgNyj11l2u58vC57D1er7xU5WwUB5 xvpQo5vqMw== ) ;; 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 20251031102554 20251017085554 22747 nic.cz. 0NYibd1cv4Qo+R0oILJuen/ecqJxKYddb0bRvX2+N/ShSY9n0TRm0R8FZJaAxfAkUaknjpVmShNO aIjzXeXlWQ== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. GTPgwERC8ifOO+FNo6dkhYicMX6g25Lic7CSREYRBr/SlaC738ZvZTYFv+0hQYxwPfoQioNvY4cO EBmOpl06wA== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20251031102554 20251017085554 22747 nic.cz. qsj6GOxRdU5lbNW0y2QXmQS4kQrBqh3DjNu0OhABOG9qiMqb18QNZCn5DFWl9G+fJ8hgbdpEc+b/ 04/fR2G7SA== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. pqcJ3a/wducAqeLfyIhY/2zaSyMn9IQX/orySg0x2S8zYfgdLPKtDAYVI9SAatSbPRlbcUYAL0hX RXQL8/v1NQ== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20251031102554 20251017085554 22747 nic.cz. +s7uOp3YDRe/OdqFWMxdhiZf6ijbawJx/EkibKsgNOFBDNLuWET9CoSxRCWNfjuWyv4RbrgeSwjD 8I78ZLkZnw== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. r73VDbDdeWZRWic54a4D3vhyX3eovJ4GLz+66FovDPLhPdY9PjI2ucGD7iZPfWfPcitTcFTGD276 kBf3eouP8Q== ) ;; { "EDNS-VERSION": 0 }
	c.ns.nic.cz is authoritative for nic.cz
	Query to c.ns.nic.cz for nic.cz/DNSKEY
	Received 297 bytes from 194.0.14.1
	;; Response received from [194.0.14.1] 297 octets ;; HEADER SECTION ;; id = 60683 ;; 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 sJL1/SM+Pqd3AQ4WJCzxDKwiNt8XpM6Q7Z9dnm4pdej2TWbh+UTZUwslC0CJgmLnResehnwg+DpZ LYOmi+i+PA== ) ; keytag 53688 nic.cz. 1800 IN DNSKEY ( 256 3 13 VwKaTBDIkOH7xgMsIa0jfu7UiOq50GDdwma1tzxzRhHbkgpuTP/KSB58YTAR6eJouRigs1N6yXze xsANTdkb7g== ) ; keytag 22747 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20251031115554 20251017102554 53688 nic.cz. K8lXlw/9xlIsYK5KnLm2TGsgJsq3978kuIp0YJObmS2r0fPUkLwQ11ocoImX4/oSQD+bYhwNHX8x JgOY08XN1Q== ) ;; 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 = 1588 ;; 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 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 20251031102554 20251017085554 22747 nic.cz. CljYLCzyrPNQ1Ogw1oZ7OZP8BjhvL0jWuQMB4J3MyUFa/sjdgNyj11l2u58vC57D1er7xU5WwUB5 xvpQo5vqMw== ) ;; 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 20251031102554 20251017085554 22747 nic.cz. 0NYibd1cv4Qo+R0oILJuen/ecqJxKYddb0bRvX2+N/ShSY9n0TRm0R8FZJaAxfAkUaknjpVmShNO aIjzXeXlWQ== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. GTPgwERC8ifOO+FNo6dkhYicMX6g25Lic7CSREYRBr/SlaC738ZvZTYFv+0hQYxwPfoQioNvY4cO EBmOpl06wA== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20251031102554 20251017085554 22747 nic.cz. qsj6GOxRdU5lbNW0y2QXmQS4kQrBqh3DjNu0OhABOG9qiMqb18QNZCn5DFWl9G+fJ8hgbdpEc+b/ 04/fR2G7SA== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. pqcJ3a/wducAqeLfyIhY/2zaSyMn9IQX/orySg0x2S8zYfgdLPKtDAYVI9SAatSbPRlbcUYAL0hX RXQL8/v1NQ== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20251031102554 20251017085554 22747 nic.cz. +s7uOp3YDRe/OdqFWMxdhiZf6ijbawJx/EkibKsgNOFBDNLuWET9CoSxRCWNfjuWyv4RbrgeSwjD 8I78ZLkZnw== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. r73VDbDdeWZRWic54a4D3vhyX3eovJ4GLz+66FovDPLhPdY9PjI2ucGD7iZPfWfPcitTcFTGD276 kBf3eouP8Q== ) ;; { "EDNS-VERSION": 0 }
	Found nic.cz nameservers: d.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz

nic.cz

	Checking DS between cz and nic.cz
	Query to a.ns.nic.cz for nic.cz/DS
	Received 181 bytes from 194.0.12.1
	;; Response received from [194.0.12.1] 181 octets ;; HEADER SECTION ;; id = 63714 ;; 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 ( 53688 13 2 47ca3c7b812e4664194dc2b0833d752da1fccb36fc9c7b8b76e9bd4fe3ad2dcf ) nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20251026094657 20251012081657 29331 cz. 4ug9kmJ+KlixU9E8UKdPm2SWnBoul8lZqu5JmcYehV5VcEbrLpc9K0l3gafzXfF/BAFhz9iY/NNx 7MzCvrzU2g== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 1 DS records for nic.cz in the cz zone
	DS=53688/SHA-256 has algorithm ECDSAP256SHA256
	Found 1 RRSIGs over DS RRset
	`nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20251026094657 20251012081657 29331 cz. 4ug9kmJ+KlixU9E8UKdPm2SWnBoul8lZqu5JmcYehV5VcEbrLpc9K0l3gafzXfF/BAFhz9iY/NNx 7MzCvrzU2g== )`
	RRSIG=29331 and DNSKEY=29331 verifies the DS RRset
	DS=53688/SHA-256 is now in the chain-of-trust
	`nic.cz. 3600 IN DS ( 53688 13 2 47ca3c7b812e4664194dc2b0833d752da1fccb36fc9c7b8b76e9bd4fe3ad2dcf )`
	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 = 40420 ;; 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 VwKaTBDIkOH7xgMsIa0jfu7UiOq50GDdwma1tzxzRhHbkgpuTP/KSB58YTAR6eJouRigs1N6yXze xsANTdkb7g== ) ; keytag 22747 nic.cz. 1800 IN DNSKEY ( 257 3 13 sJL1/SM+Pqd3AQ4WJCzxDKwiNt8XpM6Q7Z9dnm4pdej2TWbh+UTZUwslC0CJgmLnResehnwg+DpZ LYOmi+i+PA== ) ; keytag 53688 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20251031115554 20251017102554 53688 nic.cz. K8lXlw/9xlIsYK5KnLm2TGsgJsq3978kuIp0YJObmS2r0fPUkLwQ11ocoImX4/oSQD+bYhwNHX8x JgOY08XN1Q== ) ;; 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 VwKaTBDIkOH7xgMsIa0jfu7UiOq50GDdwma1tzxzRhHbkgpuTP/KSB58YTAR6eJouRigs1N6yXze xsANTdkb7g== ) ; keytag 22747`
	`nic.cz. 1800 IN DNSKEY ( 257 3 13 sJL1/SM+Pqd3AQ4WJCzxDKwiNt8XpM6Q7Z9dnm4pdej2TWbh+UTZUwslC0CJgmLnResehnwg+DpZ LYOmi+i+PA== ) ; keytag 53688`
	DNSKEY=53688/SEP is now in the chain-of-trust
	DS=53688/SHA-256 verifies DNSKEY=53688/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20251031115554 20251017102554 53688 nic.cz. K8lXlw/9xlIsYK5KnLm2TGsgJsq3978kuIp0YJObmS2r0fPUkLwQ11ocoImX4/oSQD+bYhwNHX8x JgOY08XN1Q== )`
	RRSIG=53688 and DNSKEY=53688/SEP verifies the DNSKEY RRset
	DNSKEY=22747 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 = 40587 ;; 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 20251031102554 20251017085554 22747 nic.cz. QdFaQ8zjI5if5/rWABmxNgKmemq8SBkQDCpeq6ajZo283eWbf9eeyan2UX/TLRVpwKmMuko8ix00 b9W3LMYYoQ== ) ;; 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 = 48264 ;; 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. 1760958942 ;serial 14400 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20251103111542 20251020094542 22747 nic.cz. jpMeQq+NzZYcnemCDOk8OnUi5urfJtvb7HSVIDdBR8S6b4jow2vPkFhe673dSxtd1qd8bA6kLGck vxb6WPinWw== ) ;; 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 = 43239 ;; 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. 1760958942 ;serial 14400 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20251103111542 20251020094542 22747 nic.cz. jpMeQq+NzZYcnemCDOk8OnUi5urfJtvb7HSVIDdBR8S6b4jow2vPkFhe673dSxtd1qd8bA6kLGck vxb6WPinWw== ) ;; AUTHORITY SECTION (4 records) nic.cz. 1800 IN NS d.ns.nic.cz. nic.cz. 1800 IN NS b.ns.nic.cz. nic.cz. 1800 IN NS a.ns.nic.cz. nic.cz. 1800 IN RRSIG ( NS 13 2 1800 20251031102554 20251017085554 22747 nic.cz. CljYLCzyrPNQ1Ogw1oZ7OZP8BjhvL0jWuQMB4J3MyUFa/sjdgNyj11l2u58vC57D1er7xU5WwUB5 xvpQo5vqMw== ) ;; 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 20251031102554 20251017085554 22747 nic.cz. 0NYibd1cv4Qo+R0oILJuen/ecqJxKYddb0bRvX2+N/ShSY9n0TRm0R8FZJaAxfAkUaknjpVmShNO aIjzXeXlWQ== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. GTPgwERC8ifOO+FNo6dkhYicMX6g25Lic7CSREYRBr/SlaC738ZvZTYFv+0hQYxwPfoQioNvY4cO EBmOpl06wA== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20251031102554 20251017085554 22747 nic.cz. qsj6GOxRdU5lbNW0y2QXmQS4kQrBqh3DjNu0OhABOG9qiMqb18QNZCn5DFWl9G+fJ8hgbdpEc+b/ 04/fR2G7SA== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. pqcJ3a/wducAqeLfyIhY/2zaSyMn9IQX/orySg0x2S8zYfgdLPKtDAYVI9SAatSbPRlbcUYAL0hX RXQL8/v1NQ== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20251031102554 20251017085554 22747 nic.cz. +s7uOp3YDRe/OdqFWMxdhiZf6ijbawJx/EkibKsgNOFBDNLuWET9CoSxRCWNfjuWyv4RbrgeSwjD 8I78ZLkZnw== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. r73VDbDdeWZRWic54a4D3vhyX3eovJ4GLz+66FovDPLhPdY9PjI2ucGD7iZPfWfPcitTcFTGD276 kBf3eouP8Q== ) ;; { "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 = 29963 ;; 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 20251031102554 20251017085554 22747 nic.cz. QdFaQ8zjI5if5/rWABmxNgKmemq8SBkQDCpeq6ajZo283eWbf9eeyan2UX/TLRVpwKmMuko8ix00 b9W3LMYYoQ== ) ;; 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 20251031102554 20251017085554 22747 nic.cz. QdFaQ8zjI5if5/rWABmxNgKmemq8SBkQDCpeq6ajZo283eWbf9eeyan2UX/TLRVpwKmMuko8ix00 b9W3LMYYoQ== )`
	RRSIG=22747 and DNSKEY=22747 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 = 39560 ;; 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 20251031102554 20251017085554 22747 nic.cz. QdFaQ8zjI5if5/rWABmxNgKmemq8SBkQDCpeq6ajZo283eWbf9eeyan2UX/TLRVpwKmMuko8ix00 b9W3LMYYoQ== ) ;; AUTHORITY SECTION (4 records) nic.cz. 1800 IN NS d.ns.nic.cz. nic.cz. 1800 IN NS b.ns.nic.cz. nic.cz. 1800 IN NS a.ns.nic.cz. nic.cz. 1800 IN RRSIG ( NS 13 2 1800 20251031102554 20251017085554 22747 nic.cz. CljYLCzyrPNQ1Ogw1oZ7OZP8BjhvL0jWuQMB4J3MyUFa/sjdgNyj11l2u58vC57D1er7xU5WwUB5 xvpQo5vqMw== ) ;; 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 20251031102554 20251017085554 22747 nic.cz. 0NYibd1cv4Qo+R0oILJuen/ecqJxKYddb0bRvX2+N/ShSY9n0TRm0R8FZJaAxfAkUaknjpVmShNO aIjzXeXlWQ== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. GTPgwERC8ifOO+FNo6dkhYicMX6g25Lic7CSREYRBr/SlaC738ZvZTYFv+0hQYxwPfoQioNvY4cO EBmOpl06wA== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20251031102554 20251017085554 22747 nic.cz. qsj6GOxRdU5lbNW0y2QXmQS4kQrBqh3DjNu0OhABOG9qiMqb18QNZCn5DFWl9G+fJ8hgbdpEc+b/ 04/fR2G7SA== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. pqcJ3a/wducAqeLfyIhY/2zaSyMn9IQX/orySg0x2S8zYfgdLPKtDAYVI9SAatSbPRlbcUYAL0hX RXQL8/v1NQ== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20251031102554 20251017085554 22747 nic.cz. +s7uOp3YDRe/OdqFWMxdhiZf6ijbawJx/EkibKsgNOFBDNLuWET9CoSxRCWNfjuWyv4RbrgeSwjD 8I78ZLkZnw== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. r73VDbDdeWZRWic54a4D3vhyX3eovJ4GLz+66FovDPLhPdY9PjI2ucGD7iZPfWfPcitTcFTGD276 kBf3eouP8Q== ) ;; { "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 = 20685 ;; 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 20251031102554 20251017085554 22747 nic.cz. QdFaQ8zjI5if5/rWABmxNgKmemq8SBkQDCpeq6ajZo283eWbf9eeyan2UX/TLRVpwKmMuko8ix00 b9W3LMYYoQ== ) ;; 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 20251031102554 20251017085554 22747 nic.cz. CljYLCzyrPNQ1Ogw1oZ7OZP8BjhvL0jWuQMB4J3MyUFa/sjdgNyj11l2u58vC57D1er7xU5WwUB5 xvpQo5vqMw== ) ;; 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 20251031102554 20251017085554 22747 nic.cz. 0NYibd1cv4Qo+R0oILJuen/ecqJxKYddb0bRvX2+N/ShSY9n0TRm0R8FZJaAxfAkUaknjpVmShNO aIjzXeXlWQ== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. GTPgwERC8ifOO+FNo6dkhYicMX6g25Lic7CSREYRBr/SlaC738ZvZTYFv+0hQYxwPfoQioNvY4cO EBmOpl06wA== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20251031102554 20251017085554 22747 nic.cz. qsj6GOxRdU5lbNW0y2QXmQS4kQrBqh3DjNu0OhABOG9qiMqb18QNZCn5DFWl9G+fJ8hgbdpEc+b/ 04/fR2G7SA== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. pqcJ3a/wducAqeLfyIhY/2zaSyMn9IQX/orySg0x2S8zYfgdLPKtDAYVI9SAatSbPRlbcUYAL0hX RXQL8/v1NQ== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20251031102554 20251017085554 22747 nic.cz. +s7uOp3YDRe/OdqFWMxdhiZf6ijbawJx/EkibKsgNOFBDNLuWET9CoSxRCWNfjuWyv4RbrgeSwjD 8I78ZLkZnw== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20251031102554 20251017085554 22747 nic.cz. r73VDbDdeWZRWic54a4D3vhyX3eovJ4GLz+66FovDPLhPdY9PjI2ucGD7iZPfWfPcitTcFTGD276 kBf3eouP8Q== ) ;; { "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 20251031102554 20251017085554 22747 nic.cz. QdFaQ8zjI5if5/rWABmxNgKmemq8SBkQDCpeq6ajZo283eWbf9eeyan2UX/TLRVpwKmMuko8ix00 b9W3LMYYoQ== )`
	RRSIG=22747 and DNSKEY=22747 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 = 34543 ;; 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 20251031102554 20251017085554 22747 nic.cz. QdFaQ8zjI5if5/rWABmxNgKmemq8SBkQDCpeq6ajZo283eWbf9eeyan2UX/TLRVpwKmMuko8ix00 b9W3LMYYoQ== ) ;; 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 = 24275 ;; 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 20251031102554 20251017085554 22747 nic.cz. QdFaQ8zjI5if5/rWABmxNgKmemq8SBkQDCpeq6ajZo283eWbf9eeyan2UX/TLRVpwKmMuko8ix00 b9W3LMYYoQ== ) ;; 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 20251031102554 20251017085554 22747 nic.cz. QdFaQ8zjI5if5/rWABmxNgKmemq8SBkQDCpeq6ajZo283eWbf9eeyan2UX/TLRVpwKmMuko8ix00 b9W3LMYYoQ== )`
	RRSIG=22747 and DNSKEY=22747 verifies the A RRset

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