DNSSEC Debugger

Domain Name:

Time: 2025-10-19 09:44:58 UTC

Analyzing DNSSEC problems for cvut.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 l.root-servers.net for ./DNSKEY
	Received 1139 bytes from 199.7.83.42
	;; Response received from [199.7.83.42] 1139 octets ;; HEADER SECTION ;; id = 34705 ;; 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": 4096, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; . IN DNSKEY ;; ANSWER SECTION (4 records) . 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 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 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 ( 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 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 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=61809 is now in the chain-of-trust
	DNSKEY=38696/SEP is now in the chain-of-trust
	Query to f.root-servers.net for cvut.cz/A
	Received 618 bytes from 192.5.5.241
	;; Response received from [192.5.5.241] 618 octets ;; HEADER SECTION ;; id = 30605 ;; 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) ;; cvut.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 20251101050000 20251019040000 61809 . ue7wVoMcp5EKQeb4OwHpUByfqPTUD3MBn6FAAvOhalv3lpzheC2EBnZQRabJaliXBHLoBgVCv4c/ F8336ebWiXWR3riGR/f6izgTwoCTLMVr+pP0Ox4Y9ZjksmhAuoa8rZLUDeSkoyaR0xIovS0t82NZ fSNtTnUuL+7fEXFhyuMxqQdDt5FrksOCnNGu2RxKiPXWmUT58+4TbX+o3IFbu7BvkylLr5EqYSk7 +lreGNhZT9rnthVpqQcftwQIPiRHtjev5XSeq/EL92TuIceSEKQiBQrsk+4NUOaoUX8dhViWGPeF f5vwdcRHp6wyT7j53pJQhTP7/PJ99aX47ugCkg== ) ;; 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 k.root-servers.net for cz/DNSKEY
	Received 613 bytes from 193.0.14.129
	;; Response received from [193.0.14.129] 613 octets ;; HEADER SECTION ;; id = 51625 ;; qr = 1 aa = 0 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; do = 1 co = 0 ;; qdcount = 1 ancount = 0 ;; nscount = 6 arcount = 9 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; cz. IN DNSKEY ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (6 records) cz. 172800 IN NS a.ns.nic.cz. cz. 172800 IN NS 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 20251101050000 20251019040000 61809 . ue7wVoMcp5EKQeb4OwHpUByfqPTUD3MBn6FAAvOhalv3lpzheC2EBnZQRabJaliXBHLoBgVCv4c/ F8336ebWiXWR3riGR/f6izgTwoCTLMVr+pP0Ox4Y9ZjksmhAuoa8rZLUDeSkoyaR0xIovS0t82NZ fSNtTnUuL+7fEXFhyuMxqQdDt5FrksOCnNGu2RxKiPXWmUT58+4TbX+o3IFbu7BvkylLr5EqYSk7 +lreGNhZT9rnthVpqQcftwQIPiRHtjev5XSeq/EL92TuIceSEKQiBQrsk+4NUOaoUX8dhViWGPeF f5vwdcRHp6wyT7j53pJQhTP7/PJ99aX47ugCkg== ) ;; 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 }
	Found child zone cz

	Checking DS between . and cz
	Query to l.root-servers.net for cz/DS
	Received 366 bytes from 199.7.83.42
	;; Response received from [199.7.83.42] 366 octets ;; HEADER SECTION ;; id = 54064 ;; 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": 4096, ;; "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 20251101050000 20251019040000 61809 . ue7wVoMcp5EKQeb4OwHpUByfqPTUD3MBn6FAAvOhalv3lpzheC2EBnZQRabJaliXBHLoBgVCv4c/ F8336ebWiXWR3riGR/f6izgTwoCTLMVr+pP0Ox4Y9ZjksmhAuoa8rZLUDeSkoyaR0xIovS0t82NZ fSNtTnUuL+7fEXFhyuMxqQdDt5FrksOCnNGu2RxKiPXWmUT58+4TbX+o3IFbu7BvkylLr5EqYSk7 +lreGNhZT9rnthVpqQcftwQIPiRHtjev5XSeq/EL92TuIceSEKQiBQrsk+4NUOaoUX8dhViWGPeF f5vwdcRHp6wyT7j53pJQhTP7/PJ99aX47ugCkg== ) ;; 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 20251101050000 20251019040000 61809 . ue7wVoMcp5EKQeb4OwHpUByfqPTUD3MBn6FAAvOhalv3lpzheC2EBnZQRabJaliXBHLoBgVCv4c/ F8336ebWiXWR3riGR/f6izgTwoCTLMVr+pP0Ox4Y9ZjksmhAuoa8rZLUDeSkoyaR0xIovS0t82NZ fSNtTnUuL+7fEXFhyuMxqQdDt5FrksOCnNGu2RxKiPXWmUT58+4TbX+o3IFbu7BvkylLr5EqYSk7 +lreGNhZT9rnthVpqQcftwQIPiRHtjev5XSeq/EL92TuIceSEKQiBQrsk+4NUOaoUX8dhViWGPeF f5vwdcRHp6wyT7j53pJQhTP7/PJ99aX47ugCkg== )`
	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 d.ns.nic.cz for cz/DNSKEY
	Received 289 bytes from 193.29.206.1
	;; Response received from [193.29.206.1] 289 octets ;; HEADER SECTION ;; id = 56116 ;; 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 ( 257 3 13 nqzH7xP1QU5UOVy/VvxFSlrB/XgX9JDJzj51PzIj35TXjZTyalTlAT/f7PAfaSD5mEG1N8Vk9NmI 2nxgQqhzDQ== ) ; keytag 20237 cz. 3600 IN DNSKEY ( 256 3 13 Ldm3tOZ5N8Mxf+g5nBj/HerGvw2xg3DNiaI0erbNuQlpiRRHuzi+Yv6Eb0NYleimT9q+eKYJCZOC axMg4KjhHA== ) ; keytag 29331 cz. 3600 IN RRSIG ( DNSKEY 13 1 3600 20251026142134 20251012125134 20237 cz. OSkvJFdnhYQQvPjwjPRhAuR4odJ4rmb8v50z33YWaTF/9j+D+V3djSgYwViMzsm8YAGmWUsDC9Ld 7BzVgqzTfQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 2 DNSKEY records for cz
	`cz. 3600 IN DNSKEY ( 257 3 13 nqzH7xP1QU5UOVy/VvxFSlrB/XgX9JDJzj51PzIj35TXjZTyalTlAT/f7PAfaSD5mEG1N8Vk9NmI 2nxgQqhzDQ== ) ; keytag 20237`
	`cz. 3600 IN DNSKEY ( 256 3 13 Ldm3tOZ5N8Mxf+g5nBj/HerGvw2xg3DNiaI0erbNuQlpiRRHuzi+Yv6Eb0NYleimT9q+eKYJCZOC axMg4KjhHA== ) ; keytag 29331`
	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 20251026142134 20251012125134 20237 cz. OSkvJFdnhYQQvPjwjPRhAuR4odJ4rmb8v50z33YWaTF/9j+D+V3djSgYwViMzsm8YAGmWUsDC9Ld 7BzVgqzTfQ== )`
	RRSIG=20237 and DNSKEY=20237/SEP verifies the DNSKEY RRset
	DNSKEY=29331 is now in the chain-of-trust
	Query to b.ns.nic.cz for cvut.cz/A
	Received 305 bytes from 194.0.13.1
	;; Response received from [194.0.13.1] 305 octets ;; HEADER SECTION ;; id = 47524 ;; 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 = 4 arcount = 5 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; cvut.cz. IN A ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (4 records) cvut.cz. 3600 IN NS ns.cvut.cz. cvut.cz. 3600 IN NS nss.cvut.cz. cvut.cz. 3600 IN DS ( 41860 13 2 2311d5df154638befa68b593c52e6b6c72060e33ff020392fa527b1f4c3bf3b3 ) cvut.cz. 3600 IN RRSIG ( DS 13 2 3600 20251026094657 20251012081657 29331 cz. EQAQ9H7KRLHAXnaeWgXuCC1XTtCvobtniNlDo/bOpvL49PwakzWLZL5O0blFqZMDUeNh13aY6fW4 NWdd3eAG3g== ) ;; ADDITIONAL SECTION (5 records) ns.cvut.cz. 3600 IN A 147.32.1.20 ns.cvut.cz. 3600 IN AAAA 2001:718:2:2200::100 nss.cvut.cz. 3600 IN A 147.32.1.9 nss.cvut.cz. 3600 IN AAAA 2001:718:2:2200::101 ;; { "EDNS-VERSION": 0 }
	Query to c.ns.nic.cz for cvut.cz/DNSKEY
	Received 305 bytes from 194.0.14.1
	;; Response received from [194.0.14.1] 305 octets ;; HEADER SECTION ;; id = 58560 ;; 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 = 4 arcount = 5 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; cvut.cz. IN DNSKEY ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (4 records) cvut.cz. 3600 IN NS nss.cvut.cz. cvut.cz. 3600 IN NS ns.cvut.cz. cvut.cz. 3600 IN DS ( 41860 13 2 2311d5df154638befa68b593c52e6b6c72060e33ff020392fa527b1f4c3bf3b3 ) cvut.cz. 3600 IN RRSIG ( DS 13 2 3600 20251026094657 20251012081657 29331 cz. EQAQ9H7KRLHAXnaeWgXuCC1XTtCvobtniNlDo/bOpvL49PwakzWLZL5O0blFqZMDUeNh13aY6fW4 NWdd3eAG3g== ) ;; ADDITIONAL SECTION (5 records) nss.cvut.cz. 3600 IN A 147.32.1.9 ns.cvut.cz. 3600 IN A 147.32.1.20 nss.cvut.cz. 3600 IN AAAA 2001:718:2:2200::101 ns.cvut.cz. 3600 IN AAAA 2001:718:2:2200::100 ;; { "EDNS-VERSION": 0 }
	Found child zone cvut.cz

cvut.cz

	Checking DS between cz and cvut.cz
	Query to d.ns.nic.cz for cvut.cz/DS
	Received 182 bytes from 193.29.206.1
	;; Response received from [193.29.206.1] 182 octets ;; HEADER SECTION ;; id = 43773 ;; 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) ;; cvut.cz. IN DS ;; ANSWER SECTION (2 records) cvut.cz. 3600 IN DS ( 41860 13 2 2311d5df154638befa68b593c52e6b6c72060e33ff020392fa527b1f4c3bf3b3 ) cvut.cz. 3600 IN RRSIG ( DS 13 2 3600 20251026094657 20251012081657 29331 cz. EQAQ9H7KRLHAXnaeWgXuCC1XTtCvobtniNlDo/bOpvL49PwakzWLZL5O0blFqZMDUeNh13aY6fW4 NWdd3eAG3g== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 1 DS records for cvut.cz in the cz zone
	DS=41860/SHA-256 has algorithm ECDSAP256SHA256
	Found 1 RRSIGs over DS RRset
	`cvut.cz. 3600 IN RRSIG ( DS 13 2 3600 20251026094657 20251012081657 29331 cz. EQAQ9H7KRLHAXnaeWgXuCC1XTtCvobtniNlDo/bOpvL49PwakzWLZL5O0blFqZMDUeNh13aY6fW4 NWdd3eAG3g== )`
	RRSIG=29331 and DNSKEY=29331 verifies the DS RRset
	DS=41860/SHA-256 is now in the chain-of-trust
	`cvut.cz. 3600 IN DS ( 41860 13 2 2311d5df154638befa68b593c52e6b6c72060e33ff020392fa527b1f4c3bf3b3 )`
	Query to ns.cvut.cz for cvut.cz/DNSKEY
	Received 219 bytes from 147.32.1.20
	;; Response received from [147.32.1.20] 219 octets ;; HEADER SECTION ;; id = 7060 ;; 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) ;; cvut.cz. IN DNSKEY ;; ANSWER SECTION (2 records) cvut.cz. 6400 IN DNSKEY ( 257 3 13 +XkJfh9Fh5wGJVpntLyKQRXkrRQhP+kL3lnJ1SQfG3XTjW9WBBknfO37yynPQtat8S+kIuOJZaSg kLmMfS8drQ== ) ; keytag 41860 cvut.cz. 6400 IN RRSIG ( DNSKEY 13 2 6400 20251110022454 20251011012950 41860 cvut.cz. OsySvxvQKIbZ15Tzfoy73LXlTQqldugjVqgGyrt/JMVag4f2fnfMVnZIVps5WAkS0J2thtYygq2y OWk/9ItcYQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 1 DNSKEY records for cvut.cz
	`cvut.cz. 6400 IN DNSKEY ( 257 3 13 +XkJfh9Fh5wGJVpntLyKQRXkrRQhP+kL3lnJ1SQfG3XTjW9WBBknfO37yynPQtat8S+kIuOJZaSg kLmMfS8drQ== ) ; keytag 41860`
	DNSKEY=41860/SEP is now in the chain-of-trust
	DS=41860/SHA-256 verifies DNSKEY=41860/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`cvut.cz. 6400 IN RRSIG ( DNSKEY 13 2 6400 20251110022454 20251011012950 41860 cvut.cz. OsySvxvQKIbZ15Tzfoy73LXlTQqldugjVqgGyrt/JMVag4f2fnfMVnZIVps5WAkS0J2thtYygq2y OWk/9ItcYQ== )`
	RRSIG=41860 and DNSKEY=41860/SEP verifies the DNSKEY RRset
	Query to ns.cvut.cz for cvut.cz/A
	Received 793 bytes from 147.32.1.20
	;; Response received from [147.32.1.20] 793 octets ;; HEADER SECTION ;; id = 30281 ;; 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 = 3 arcount = 9 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; cvut.cz. IN A ;; ANSWER SECTION (2 records) cvut.cz. 6400 IN A 147.32.3.202 cvut.cz. 6400 IN RRSIG ( A 13 2 6400 20251031120952 20251001111516 41860 cvut.cz. FbXEbqBIxWBC3i5OKvU/bNkJk+3gEsIpCqaXFEHXGXRgIC9e2NS9PD8WW43pQ9rKPB4TqBIEbkYL nS57Ak2MIw== ) ;; AUTHORITY SECTION (3 records) cvut.cz. 6400 IN NS nss.cvut.cz. cvut.cz. 6400 IN NS ns.cvut.cz. cvut.cz. 6400 IN RRSIG ( NS 13 2 6400 20251031120952 20251001111516 41860 cvut.cz. /sEVQOeAENcGUTkbdp29U6XdQthB1R0zpAWhbznfVX5Pifdaac1VcVKqyfjbHQ9413C4WDbWsp5W OSbVEHKHnA== ) ;; ADDITIONAL SECTION (9 records) ns.cvut.cz. 6400 IN A 147.32.1.20 nss.cvut.cz. 6400 IN A 147.32.1.9 ns.cvut.cz. 6400 IN AAAA 2001:718:2:2200::100 nss.cvut.cz. 6400 IN AAAA 2001:718:2:2200::101 ns.cvut.cz. 6400 IN RRSIG ( A 13 3 6400 20251027081324 20250927074742 41860 cvut.cz. /M5MT1y6SLwD7yaRW25KqxylI5h1zHyY/Q7X/lVubGIkHPLRnib8ZfJEtNxrkupHJd7bwopofW7f BiD6cx+nSA== ) ns.cvut.cz. 6400 IN RRSIG ( AAAA 13 3 6400 20251027081324 20250927074742 41860 cvut.cz. Lgkh1uTUHaMoW1HUagfmWMpfWuEdxSSqMjsyEzLsPet0yAyV0SgIkQ4F+/tw9rdBLT3a6xlZzo9K pAM8w5NwyA== ) nss.cvut.cz. 6400 IN RRSIG ( A 13 3 6400 20251109201401 20251010195210 41860 cvut.cz. A8UzJ5aKHQg79uvzTUXfPNrNA6i/ANzPviEFr2mi4Ls20Le8ikHt8so8Cp16rBrC3qr8KtT0tnoF NQ78ZTfYXA== ) nss.cvut.cz. 6400 IN RRSIG ( AAAA 13 3 6400 20251109201401 20251010195210 41860 cvut.cz. qvG4uXpRtdMchWCAT4aGJxZ0mHt7nJ+873anfb7hhqwtaX/FayMZv5jBRfjgKdtMC7xKMBEUPl9y yCbTo2c0XA== ) ;; { "EDNS-VERSION": 0 }
	ns.cvut.cz is authoritative for cvut.cz
	Found RRSIG signed by cvut.cz zone
	Query to nss.cvut.cz for cvut.cz/SOA
	Received 824 bytes from 147.32.1.9
	;; Response received from [147.32.1.9] 824 octets ;; HEADER SECTION ;; id = 47926 ;; 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 = 3 arcount = 9 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; cvut.cz. IN SOA ;; ANSWER SECTION (2 records) cvut.cz. 6400 IN SOA ( ns.cvut.cz. hostmaster.cvut.cz. 11124 ;serial 14401 ;refresh 3600 ;retry 1209600 ;expire 86400 ;minimum ) cvut.cz. 6400 IN RRSIG ( SOA 13 2 6400 20251118081723 20251019071723 41860 cvut.cz. 61HBtNoS8WqspmO7rgNO7OaeH56wW7sqInheux3ga9GXPcCFkPh8AG2kpe2iwe00oVi0FBSGttgD 3gEBh3d2AA== ) ;; AUTHORITY SECTION (3 records) cvut.cz. 6400 IN NS ns.cvut.cz. cvut.cz. 6400 IN NS nss.cvut.cz. cvut.cz. 6400 IN RRSIG ( NS 13 2 6400 20251031120952 20251001111516 41860 cvut.cz. /sEVQOeAENcGUTkbdp29U6XdQthB1R0zpAWhbznfVX5Pifdaac1VcVKqyfjbHQ9413C4WDbWsp5W OSbVEHKHnA== ) ;; ADDITIONAL SECTION (9 records) ns.cvut.cz. 6400 IN A 147.32.1.20 nss.cvut.cz. 6400 IN A 147.32.1.9 ns.cvut.cz. 6400 IN AAAA 2001:718:2:2200::100 nss.cvut.cz. 6400 IN AAAA 2001:718:2:2200::101 ns.cvut.cz. 6400 IN RRSIG ( A 13 3 6400 20251027081324 20250927074742 41860 cvut.cz. /M5MT1y6SLwD7yaRW25KqxylI5h1zHyY/Q7X/lVubGIkHPLRnib8ZfJEtNxrkupHJd7bwopofW7f BiD6cx+nSA== ) ns.cvut.cz. 6400 IN RRSIG ( AAAA 13 3 6400 20251027081324 20250927074742 41860 cvut.cz. Lgkh1uTUHaMoW1HUagfmWMpfWuEdxSSqMjsyEzLsPet0yAyV0SgIkQ4F+/tw9rdBLT3a6xlZzo9K pAM8w5NwyA== ) nss.cvut.cz. 6400 IN RRSIG ( A 13 3 6400 20251109201401 20251010195210 41860 cvut.cz. A8UzJ5aKHQg79uvzTUXfPNrNA6i/ANzPviEFr2mi4Ls20Le8ikHt8so8Cp16rBrC3qr8KtT0tnoF NQ78ZTfYXA== ) nss.cvut.cz. 6400 IN RRSIG ( AAAA 13 3 6400 20251109201401 20251010195210 41860 cvut.cz. qvG4uXpRtdMchWCAT4aGJxZ0mHt7nJ+873anfb7hhqwtaX/FayMZv5jBRfjgKdtMC7xKMBEUPl9y yCbTo2c0XA== ) ;; { "EDNS-VERSION": 0 }
	Query to ns.cvut.cz for cvut.cz/A
	Received 793 bytes from 147.32.1.20
	;; Response received from [147.32.1.20] 793 octets ;; HEADER SECTION ;; id = 8133 ;; 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 = 3 arcount = 9 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; cvut.cz. IN A ;; ANSWER SECTION (2 records) cvut.cz. 6400 IN A 147.32.3.202 cvut.cz. 6400 IN RRSIG ( A 13 2 6400 20251031120952 20251001111516 41860 cvut.cz. FbXEbqBIxWBC3i5OKvU/bNkJk+3gEsIpCqaXFEHXGXRgIC9e2NS9PD8WW43pQ9rKPB4TqBIEbkYL nS57Ak2MIw== ) ;; AUTHORITY SECTION (3 records) cvut.cz. 6400 IN NS nss.cvut.cz. cvut.cz. 6400 IN NS ns.cvut.cz. cvut.cz. 6400 IN RRSIG ( NS 13 2 6400 20251031120952 20251001111516 41860 cvut.cz. /sEVQOeAENcGUTkbdp29U6XdQthB1R0zpAWhbznfVX5Pifdaac1VcVKqyfjbHQ9413C4WDbWsp5W OSbVEHKHnA== ) ;; ADDITIONAL SECTION (9 records) ns.cvut.cz. 6400 IN A 147.32.1.20 nss.cvut.cz. 6400 IN A 147.32.1.9 ns.cvut.cz. 6400 IN AAAA 2001:718:2:2200::100 nss.cvut.cz. 6400 IN AAAA 2001:718:2:2200::101 ns.cvut.cz. 6400 IN RRSIG ( A 13 3 6400 20251027081324 20250927074742 41860 cvut.cz. /M5MT1y6SLwD7yaRW25KqxylI5h1zHyY/Q7X/lVubGIkHPLRnib8ZfJEtNxrkupHJd7bwopofW7f BiD6cx+nSA== ) ns.cvut.cz. 6400 IN RRSIG ( AAAA 13 3 6400 20251027081324 20250927074742 41860 cvut.cz. Lgkh1uTUHaMoW1HUagfmWMpfWuEdxSSqMjsyEzLsPet0yAyV0SgIkQ4F+/tw9rdBLT3a6xlZzo9K pAM8w5NwyA== ) nss.cvut.cz. 6400 IN RRSIG ( A 13 3 6400 20251109201401 20251010195210 41860 cvut.cz. A8UzJ5aKHQg79uvzTUXfPNrNA6i/ANzPviEFr2mi4Ls20Le8ikHt8so8Cp16rBrC3qr8KtT0tnoF NQ78ZTfYXA== ) nss.cvut.cz. 6400 IN RRSIG ( AAAA 13 3 6400 20251109201401 20251010195210 41860 cvut.cz. qvG4uXpRtdMchWCAT4aGJxZ0mHt7nJ+873anfb7hhqwtaX/FayMZv5jBRfjgKdtMC7xKMBEUPl9y yCbTo2c0XA== ) ;; { "EDNS-VERSION": 0 }
	cvut.cz A RR has value 147.32.3.202
	Found 1 RRSIGs over A RRset
	`cvut.cz. 6400 IN RRSIG ( A 13 2 6400 20251031120952 20251001111516 41860 cvut.cz. FbXEbqBIxWBC3i5OKvU/bNkJk+3gEsIpCqaXFEHXGXRgIC9e2NS9PD8WW43pQ9rKPB4TqBIEbkYL nS57Ak2MIw== )`
	RRSIG=41860 and DNSKEY=41860/SEP verifies the A RRset

cvut.cz

	Query to nss.cvut.cz for cvut.cz/A
	Received 793 bytes from 147.32.1.9
	;; Response received from [147.32.1.9] 793 octets ;; HEADER SECTION ;; id = 8484 ;; 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 = 3 arcount = 9 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; cvut.cz. IN A ;; ANSWER SECTION (2 records) cvut.cz. 6400 IN A 147.32.3.202 cvut.cz. 6400 IN RRSIG ( A 13 2 6400 20251031120952 20251001111516 41860 cvut.cz. FbXEbqBIxWBC3i5OKvU/bNkJk+3gEsIpCqaXFEHXGXRgIC9e2NS9PD8WW43pQ9rKPB4TqBIEbkYL nS57Ak2MIw== ) ;; AUTHORITY SECTION (3 records) cvut.cz. 6400 IN NS ns.cvut.cz. cvut.cz. 6400 IN NS nss.cvut.cz. cvut.cz. 6400 IN RRSIG ( NS 13 2 6400 20251031120952 20251001111516 41860 cvut.cz. /sEVQOeAENcGUTkbdp29U6XdQthB1R0zpAWhbznfVX5Pifdaac1VcVKqyfjbHQ9413C4WDbWsp5W OSbVEHKHnA== ) ;; ADDITIONAL SECTION (9 records) ns.cvut.cz. 6400 IN A 147.32.1.20 nss.cvut.cz. 6400 IN A 147.32.1.9 ns.cvut.cz. 6400 IN AAAA 2001:718:2:2200::100 nss.cvut.cz. 6400 IN AAAA 2001:718:2:2200::101 ns.cvut.cz. 6400 IN RRSIG ( A 13 3 6400 20251027081324 20250927074742 41860 cvut.cz. /M5MT1y6SLwD7yaRW25KqxylI5h1zHyY/Q7X/lVubGIkHPLRnib8ZfJEtNxrkupHJd7bwopofW7f BiD6cx+nSA== ) ns.cvut.cz. 6400 IN RRSIG ( AAAA 13 3 6400 20251027081324 20250927074742 41860 cvut.cz. Lgkh1uTUHaMoW1HUagfmWMpfWuEdxSSqMjsyEzLsPet0yAyV0SgIkQ4F+/tw9rdBLT3a6xlZzo9K pAM8w5NwyA== ) nss.cvut.cz. 6400 IN RRSIG ( A 13 3 6400 20251109201401 20251010195210 41860 cvut.cz. A8UzJ5aKHQg79uvzTUXfPNrNA6i/ANzPviEFr2mi4Ls20Le8ikHt8so8Cp16rBrC3qr8KtT0tnoF NQ78ZTfYXA== ) nss.cvut.cz. 6400 IN RRSIG ( AAAA 13 3 6400 20251109201401 20251010195210 41860 cvut.cz. qvG4uXpRtdMchWCAT4aGJxZ0mHt7nJ+873anfb7hhqwtaX/FayMZv5jBRfjgKdtMC7xKMBEUPl9y yCbTo2c0XA== ) ;; { "EDNS-VERSION": 0 }
	nss.cvut.cz is authoritative for cvut.cz
	Found RRSIG signed by cvut.cz zone
	Query to nss.cvut.cz for cvut.cz/A
	Received 793 bytes from 147.32.1.9
	;; Response received from [147.32.1.9] 793 octets ;; HEADER SECTION ;; id = 8566 ;; 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 = 3 arcount = 9 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; cvut.cz. IN A ;; ANSWER SECTION (2 records) cvut.cz. 6400 IN A 147.32.3.202 cvut.cz. 6400 IN RRSIG ( A 13 2 6400 20251031120952 20251001111516 41860 cvut.cz. FbXEbqBIxWBC3i5OKvU/bNkJk+3gEsIpCqaXFEHXGXRgIC9e2NS9PD8WW43pQ9rKPB4TqBIEbkYL nS57Ak2MIw== ) ;; AUTHORITY SECTION (3 records) cvut.cz. 6400 IN NS ns.cvut.cz. cvut.cz. 6400 IN NS nss.cvut.cz. cvut.cz. 6400 IN RRSIG ( NS 13 2 6400 20251031120952 20251001111516 41860 cvut.cz. /sEVQOeAENcGUTkbdp29U6XdQthB1R0zpAWhbznfVX5Pifdaac1VcVKqyfjbHQ9413C4WDbWsp5W OSbVEHKHnA== ) ;; ADDITIONAL SECTION (9 records) ns.cvut.cz. 6400 IN A 147.32.1.20 nss.cvut.cz. 6400 IN A 147.32.1.9 ns.cvut.cz. 6400 IN AAAA 2001:718:2:2200::100 nss.cvut.cz. 6400 IN AAAA 2001:718:2:2200::101 ns.cvut.cz. 6400 IN RRSIG ( A 13 3 6400 20251027081324 20250927074742 41860 cvut.cz. /M5MT1y6SLwD7yaRW25KqxylI5h1zHyY/Q7X/lVubGIkHPLRnib8ZfJEtNxrkupHJd7bwopofW7f BiD6cx+nSA== ) ns.cvut.cz. 6400 IN RRSIG ( AAAA 13 3 6400 20251027081324 20250927074742 41860 cvut.cz. Lgkh1uTUHaMoW1HUagfmWMpfWuEdxSSqMjsyEzLsPet0yAyV0SgIkQ4F+/tw9rdBLT3a6xlZzo9K pAM8w5NwyA== ) nss.cvut.cz. 6400 IN RRSIG ( A 13 3 6400 20251109201401 20251010195210 41860 cvut.cz. A8UzJ5aKHQg79uvzTUXfPNrNA6i/ANzPviEFr2mi4Ls20Le8ikHt8so8Cp16rBrC3qr8KtT0tnoF NQ78ZTfYXA== ) nss.cvut.cz. 6400 IN RRSIG ( AAAA 13 3 6400 20251109201401 20251010195210 41860 cvut.cz. qvG4uXpRtdMchWCAT4aGJxZ0mHt7nJ+873anfb7hhqwtaX/FayMZv5jBRfjgKdtMC7xKMBEUPl9y yCbTo2c0XA== ) ;; { "EDNS-VERSION": 0 }
	cvut.cz A RR has value 147.32.3.202
	Found 1 RRSIGs over A RRset
	`cvut.cz. 6400 IN RRSIG ( A 13 2 6400 20251031120952 20251001111516 41860 cvut.cz. FbXEbqBIxWBC3i5OKvU/bNkJk+3gEsIpCqaXFEHXGXRgIC9e2NS9PD8WW43pQ9rKPB4TqBIEbkYL nS57Ak2MIw== )`
	RRSIG=41860 and DNSKEY=41860/SEP verifies the A RRset

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