DNSSEC Debugger - regzone.cz

Back to Verisign Labs Tools

Domain Name:

Detail: more(+) / less(-)

Time: 2026-09-23 16:20:23 UTC

Analyzing DNSSEC problems for regzone.cz

DS=20326/SHA-256 is now in the chain-of-trust

DS=38696/SHA-256 is now in the chain-of-trust

	Checking DS between Trust Anchor and .
	`. IN DS ( 20326 8 2 e06d44b80b8f1d39a95c0b0d7c65d08458e880409bbc683457104237c7f8ec8d )`
	`. IN DS ( 38696 8 2 683d2d0acb8c9b712a1948b27f741219298d0a450d612c483af444a4c0fb2b16 )`
	Query to a.root-servers.net for ./DNSKEY
	Received 1414 bytes from 198.41.0.4
	;; Response received from [198.41.0.4] 1414 octets ;; HEADER SECTION ;; id = 64724 ;; 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": 4096, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; . IN DNSKEY ;; ANSWER SECTION (5 records) . 172800 IN DNSKEY ( 256 3 8 AwEAAcorNxNc9t0ue1ZenPjVMRujlQ2YLBJ0pR/4XMjHby9vr03cRxFSKnWpxeg5PL384D9VeqdS 1bjrGyTsHtoagzI3NiXFd8sjHMOnZxu5pp/+UBIg7tasYgVMMdUiM1Yu/c+t30d1Qw/v6NYLNnOn ywTu6HuUh7Y1sZRq/GZcrxLENXHQoyKpOrOr8R3+qd6wK69IKB80ZBZtkX9rdEqKJk+yYXjEZzZ0 zkAFthmNgCreAoU9PVlU66dyOsaLjf3wKUlUm9SNOKs+tK6LuSmRbK6+1T/tPaRaMBSEuv2G6vXf nJ1uyMbGvtpRn/YDcvTjrp6DzE6XyF44QdwJ3oKx4ek= ) ; keytag 8763 . 172800 IN DNSKEY ( 256 3 8 AwEAAeCYD6Z7WWKVLeuWgowKP+3g+Gs1cnLKq7a3CaQxQpv8bfuFVI0WnG33qaSH/Mw9IBgifrdz f4XY/DQLnyBJ9MfaOyAWuEaEmYJ+GQPiwVVfstGwSA1McfFJUttTgq2Huu74KARhtA8wPo/N3Xcy YQtNhz+qCM5NBb3ecx/naw6sYab9LxS6f2cU0q03++BP5Ks0Uef8WJCa/1izCYE+vMkwoltV+tEN a3hpXiZ7jle/xdgaZrPi5ZGmyLVI34g1XVYrNlsCCTmNvFQIfzW5STFQFsQpizczyFn9r3LzSxxP CNwdlCG84bER0BmdwqbF6Tanv+FxMOavrahkj4wIy5k= ) ; keytag 57780 . 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 20261010000000 20260919000000 20326 . SeT2U+BKi7S4R7OPnQ0EBjS6DtsNPasISEAE3iOUQWl552IWiqHLBYkZOa5au73wjV5oH9vQleMB gtIQleByqX74kORDKMmx+EIhhDmiNOf9w33OqM4+s0Etem28QjqQ9e4QgsKI6N39HDMedL31iybJ n6ghPcDT73IyzgTs6mtyV+Lpu1ZqH1yXNNB34YsEzgquGDKU7QkAlQMupqKlZOhJC2pj4724Fzjr MXq68MYAitHMmfnrm2/iqP8i0jIrIQgIl4mVOO4VxMZEsQa+ESJWEBQJ3Fu3jLRII/xIEq1qXb8F 87yhBvKhzuyLfQGaKttdkN9oudecqKuNezNp0g== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 4 DNSKEY records for .
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAcorNxNc9t0ue1ZenPjVMRujlQ2YLBJ0pR/4XMjHby9vr03cRxFSKnWpxeg5PL384D9VeqdS 1bjrGyTsHtoagzI3NiXFd8sjHMOnZxu5pp/+UBIg7tasYgVMMdUiM1Yu/c+t30d1Qw/v6NYLNnOn ywTu6HuUh7Y1sZRq/GZcrxLENXHQoyKpOrOr8R3+qd6wK69IKB80ZBZtkX9rdEqKJk+yYXjEZzZ0 zkAFthmNgCreAoU9PVlU66dyOsaLjf3wKUlUm9SNOKs+tK6LuSmRbK6+1T/tPaRaMBSEuv2G6vXf nJ1uyMbGvtpRn/YDcvTjrp6DzE6XyF44QdwJ3oKx4ek= ) ; keytag 8763`
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAeCYD6Z7WWKVLeuWgowKP+3g+Gs1cnLKq7a3CaQxQpv8bfuFVI0WnG33qaSH/Mw9IBgifrdz f4XY/DQLnyBJ9MfaOyAWuEaEmYJ+GQPiwVVfstGwSA1McfFJUttTgq2Huu74KARhtA8wPo/N3Xcy YQtNhz+qCM5NBb3ecx/naw6sYab9LxS6f2cU0q03++BP5Ks0Uef8WJCa/1izCYE+vMkwoltV+tEN a3hpXiZ7jle/xdgaZrPi5ZGmyLVI34g1XVYrNlsCCTmNvFQIfzW5STFQFsQpizczyFn9r3LzSxxP CNwdlCG84bER0BmdwqbF6Tanv+FxMOavrahkj4wIy5k= ) ; keytag 57780`
	`. 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
	DNSKEY=38696/SEP is now in the chain-of-trust
	DS=38696/SHA-256 verifies DNSKEY=38696/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`. 172800 IN RRSIG ( DNSKEY 8 0 172800 20261010000000 20260919000000 20326 . SeT2U+BKi7S4R7OPnQ0EBjS6DtsNPasISEAE3iOUQWl552IWiqHLBYkZOa5au73wjV5oH9vQleMB gtIQleByqX74kORDKMmx+EIhhDmiNOf9w33OqM4+s0Etem28QjqQ9e4QgsKI6N39HDMedL31iybJ n6ghPcDT73IyzgTs6mtyV+Lpu1ZqH1yXNNB34YsEzgquGDKU7QkAlQMupqKlZOhJC2pj4724Fzjr MXq68MYAitHMmfnrm2/iqP8i0jIrIQgIl4mVOO4VxMZEsQa+ESJWEBQJ3Fu3jLRII/xIEq1qXb8F 87yhBvKhzuyLfQGaKttdkN9oudecqKuNezNp0g== )`
	RRSIG=20326 and DNSKEY=20326/SEP verifies the DNSKEY RRset
	DNSKEY=8763 is now in the chain-of-trust
	DNSKEY=57780 is now in the chain-of-trust
	Query to i.root-servers.net for regzone.cz/A
	Received 621 bytes from 192.36.148.17
	;; Response received from [192.36.148.17] 621 octets ;; HEADER SECTION ;; id = 38770 ;; 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) ;; regzone.cz. IN A ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (6 records) cz. 172800 IN NS c.ns.nic.cz. cz. 172800 IN NS b.ns.nic.cz. cz. 172800 IN NS a.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 20261006050000 20260923040000 57780 . WHzUcLNnVcImO6jNgeQL0jhVjQDNJ3JLTPWiHaCD4I3+f5FOazP0TrFs0lBQMTeLyfY/gUD8H8Ck b8OEN5eQSnNhx3I/5PlvoW5G7YiRATZUSfgyOPrkgDXpT9FfclSErH6hRBZtWKiCWfIdtu/Bffqx VjHfkcueI6zhBIRpxbuUxUZAUnPIQK34S0vb2hKxWOrff9OB4hKQ+AH+nHYHDPfP3GByh2VTRzyz lDjARGWRBNMTuZeICwxtJg5zBec7CLofLPHuBrZvVRz/uw8qV9lY1MsUlYjh1igTkA8QeIj+pSLH vbysLL6ziwincMqFcX8nmRe3NE9+gAAtgqqSEQ== ) ;; 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 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 = 1222 ;; 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 20261006050000 20260923040000 57780 . WHzUcLNnVcImO6jNgeQL0jhVjQDNJ3JLTPWiHaCD4I3+f5FOazP0TrFs0lBQMTeLyfY/gUD8H8Ck b8OEN5eQSnNhx3I/5PlvoW5G7YiRATZUSfgyOPrkgDXpT9FfclSErH6hRBZtWKiCWfIdtu/Bffqx VjHfkcueI6zhBIRpxbuUxUZAUnPIQK34S0vb2hKxWOrff9OB4hKQ+AH+nHYHDPfP3GByh2VTRzyz lDjARGWRBNMTuZeICwxtJg5zBec7CLofLPHuBrZvVRz/uw8qV9lY1MsUlYjh1igTkA8QeIj+pSLH vbysLL6ziwincMqFcX8nmRe3NE9+gAAtgqqSEQ== ) ;; 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 e.root-servers.net for cz/DS
	Received 366 bytes from 192.203.230.10
	;; Response received from [192.203.230.10] 366 octets ;; HEADER SECTION ;; id = 5350 ;; 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 20261006050000 20260923040000 57780 . WHzUcLNnVcImO6jNgeQL0jhVjQDNJ3JLTPWiHaCD4I3+f5FOazP0TrFs0lBQMTeLyfY/gUD8H8Ck b8OEN5eQSnNhx3I/5PlvoW5G7YiRATZUSfgyOPrkgDXpT9FfclSErH6hRBZtWKiCWfIdtu/Bffqx VjHfkcueI6zhBIRpxbuUxUZAUnPIQK34S0vb2hKxWOrff9OB4hKQ+AH+nHYHDPfP3GByh2VTRzyz lDjARGWRBNMTuZeICwxtJg5zBec7CLofLPHuBrZvVRz/uw8qV9lY1MsUlYjh1igTkA8QeIj+pSLH vbysLL6ziwincMqFcX8nmRe3NE9+gAAtgqqSEQ== ) ;; 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 20261006050000 20260923040000 57780 . WHzUcLNnVcImO6jNgeQL0jhVjQDNJ3JLTPWiHaCD4I3+f5FOazP0TrFs0lBQMTeLyfY/gUD8H8Ck b8OEN5eQSnNhx3I/5PlvoW5G7YiRATZUSfgyOPrkgDXpT9FfclSErH6hRBZtWKiCWfIdtu/Bffqx VjHfkcueI6zhBIRpxbuUxUZAUnPIQK34S0vb2hKxWOrff9OB4hKQ+AH+nHYHDPfP3GByh2VTRzyz lDjARGWRBNMTuZeICwxtJg5zBec7CLofLPHuBrZvVRz/uw8qV9lY1MsUlYjh1igTkA8QeIj+pSLH vbysLL6ziwincMqFcX8nmRe3NE9+gAAtgqqSEQ== )`
	RRSIG=57780 and DNSKEY=57780 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 c.ns.nic.cz for cz/DNSKEY
	Received 289 bytes from 194.0.14.1
	;; Response received from [194.0.14.1] 289 octets ;; HEADER SECTION ;; id = 19553 ;; 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 MU4HRTdetkGZ4r6c3WQprXG5RVX35T90xOSvj6nL7/RMnAAhYVREf5967kwwt3VnJR5vnye0FbbP D4oma83mTw== ) ; keytag 10850 cz. 3600 IN DNSKEY ( 257 3 13 nqzH7xP1QU5UOVy/VvxFSlrB/XgX9JDJzj51PzIj35TXjZTyalTlAT/f7PAfaSD5mEG1N8Vk9NmI 2nxgQqhzDQ== ) ; keytag 20237 cz. 3600 IN RRSIG ( DNSKEY 13 1 3600 20261006122134 20260922105134 20237 cz. lUvFRL4vpU0gvKG7w46upVBNY1S64+GWayKAUyTDtSuOTK0K0K90JUwmcto4NSiQQQgXS747s6u+ A71qNq5Frw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 2 DNSKEY records for cz
	`cz. 3600 IN DNSKEY ( 256 3 13 MU4HRTdetkGZ4r6c3WQprXG5RVX35T90xOSvj6nL7/RMnAAhYVREf5967kwwt3VnJR5vnye0FbbP D4oma83mTw== ) ; keytag 10850`
	`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 20261006122134 20260922105134 20237 cz. lUvFRL4vpU0gvKG7w46upVBNY1S64+GWayKAUyTDtSuOTK0K0K90JUwmcto4NSiQQQgXS747s6u+ A71qNq5Frw== )`
	RRSIG=20237 and DNSKEY=20237/SEP verifies the DNSKEY RRset
	DNSKEY=10850 is now in the chain-of-trust
	Query to c.ns.nic.cz for regzone.cz/A
	Received 305 bytes from 194.0.14.1
	;; Response received from [194.0.14.1] 305 octets ;; HEADER SECTION ;; id = 57973 ;; 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 = 5 arcount = 3 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; regzone.cz. IN A ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (5 records) regzone.cz. 3600 IN NS ns1.regzone.de. regzone.cz. 3600 IN NS ns1.regzone.info. regzone.cz. 3600 IN NS ns1.regzone.cz. regzone.cz. 3600 IN DS ( 11972 13 2 00517d08fbc3dded8f10a18fda1988b9314dac2ed3ed132b9692e96892f4b182 ) regzone.cz. 3600 IN RRSIG ( DS 13 2 3600 20261006051726 20260922034726 10850 cz. MUXFfmaWRI1IB8J+HB096GIdFYggukVNnIdB3eTkna45l30c+Zju5IJ0GUcaHZ1I4lwB3K92Sa1y Gkehc2Ez3w== ) ;; ADDITIONAL SECTION (3 records) ns1.regzone.cz. 3600 IN A 217.198.113.10 ns1.regzone.cz. 3600 IN AAAA 2a00:19a0:3:71:0:d9c6:710a:1 ;; { "EDNS-VERSION": 0 }
	Query to d.ns.nic.cz for regzone.cz/DNSKEY
	Received 305 bytes from 193.29.206.1
	;; Response received from [193.29.206.1] 305 octets ;; HEADER SECTION ;; id = 38133 ;; 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 = 5 arcount = 3 ;; { "EDNS-VERSION": 0, ;; "FLAGS": "8000", ;; "RCODE": 0, ;; "UDPSIZE": 1232, ;; "OPTIONS": [ ] ;; } ;; QUESTION SECTION (1 record) ;; regzone.cz. IN DNSKEY ;; ANSWER SECTION (0 records) ;; AUTHORITY SECTION (5 records) regzone.cz. 3600 IN NS ns1.regzone.cz. regzone.cz. 3600 IN NS ns1.regzone.info. regzone.cz. 3600 IN NS ns1.regzone.de. regzone.cz. 3600 IN DS ( 11972 13 2 00517d08fbc3dded8f10a18fda1988b9314dac2ed3ed132b9692e96892f4b182 ) regzone.cz. 3600 IN RRSIG ( DS 13 2 3600 20261006051726 20260922034726 10850 cz. MUXFfmaWRI1IB8J+HB096GIdFYggukVNnIdB3eTkna45l30c+Zju5IJ0GUcaHZ1I4lwB3K92Sa1y Gkehc2Ez3w== ) ;; ADDITIONAL SECTION (3 records) ns1.regzone.cz. 3600 IN A 217.198.113.10 ns1.regzone.cz. 3600 IN AAAA 2a00:19a0:3:71:0:d9c6:710a:1 ;; { "EDNS-VERSION": 0 }
	Found child zone regzone.cz

regzone.cz

	Checking DS between cz and regzone.cz
	Query to c.ns.nic.cz for regzone.cz/DS
	Received 185 bytes from 194.0.14.1
	;; Response received from [194.0.14.1] 185 octets ;; HEADER SECTION ;; id = 38755 ;; 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) ;; regzone.cz. IN DS ;; ANSWER SECTION (2 records) regzone.cz. 3600 IN DS ( 11972 13 2 00517d08fbc3dded8f10a18fda1988b9314dac2ed3ed132b9692e96892f4b182 ) regzone.cz. 3600 IN RRSIG ( DS 13 2 3600 20261006051726 20260922034726 10850 cz. MUXFfmaWRI1IB8J+HB096GIdFYggukVNnIdB3eTkna45l30c+Zju5IJ0GUcaHZ1I4lwB3K92Sa1y Gkehc2Ez3w== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 1 DS records for regzone.cz in the cz zone
	DS=11972/SHA-256 has algorithm ECDSAP256SHA256
	Found 1 RRSIGs over DS RRset
	`regzone.cz. 3600 IN RRSIG ( DS 13 2 3600 20261006051726 20260922034726 10850 cz. MUXFfmaWRI1IB8J+HB096GIdFYggukVNnIdB3eTkna45l30c+Zju5IJ0GUcaHZ1I4lwB3K92Sa1y Gkehc2Ez3w== )`
	RRSIG=10850 and DNSKEY=10850 verifies the DS RRset
	DS=11972/SHA-256 is now in the chain-of-trust
	`regzone.cz. 3600 IN DS ( 11972 13 2 00517d08fbc3dded8f10a18fda1988b9314dac2ed3ed132b9692e96892f4b182 )`
	Query to ns1.regzone.de for regzone.cz/DNSKEY
	Received 411 bytes from 23.92.29.43
	;; Response received from [23.92.29.43] 411 octets ;; HEADER SECTION ;; id = 39429 ;; 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) ;; regzone.cz. IN DNSKEY ;; ANSWER SECTION (4 records) regzone.cz. 3600 IN DNSKEY ( 256 3 13 asnXAAi1wsAnTSF5Gqb1viH40YtyPTJsZw+wjphJHaqJWE1ATuU7nO2fJiVjX2kgyXEKoQKN6FPG WbgVwRxLMA== ) ; keytag 23367 regzone.cz. 3600 IN DNSKEY ( 257 3 13 IfnvmzpVHZgfjjlGUTtm5BKvcgOSz4HXRFIjbyJVRkShLQpntszfAi69vNtHW3Amtt6t7PzGrooW hrKKikL+mw== ) ; keytag 11972 regzone.cz. 3600 IN RRSIG ( DNSKEY 13 2 3600 20270115151059 20260917131059 11972 regzone.cz. 8fjG268+KpkkIFHirCXxeYe+GMyMiqWB5gs8cZ9pSbOr/QD6qrKrBVtyWVPQMzJ7mwU/2+i/RHgl 6y4f2SbAkw== ) regzone.cz. 3600 IN RRSIG ( DNSKEY 13 2 3600 20270115151059 20260917131059 23367 regzone.cz. /y9KkNhsg8Sryf/nYWNLPpcYdlycCher9z9LmPtCI12wlb9pZHa+QflIJ3HPcHquzFn4FDVjSauZ 2K5AY4Z07w== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Found 2 DNSKEY records for regzone.cz
	`regzone.cz. 3600 IN DNSKEY ( 256 3 13 asnXAAi1wsAnTSF5Gqb1viH40YtyPTJsZw+wjphJHaqJWE1ATuU7nO2fJiVjX2kgyXEKoQKN6FPG WbgVwRxLMA== ) ; keytag 23367`
	`regzone.cz. 3600 IN DNSKEY ( 257 3 13 IfnvmzpVHZgfjjlGUTtm5BKvcgOSz4HXRFIjbyJVRkShLQpntszfAi69vNtHW3Amtt6t7PzGrooW hrKKikL+mw== ) ; keytag 11972`
	DNSKEY=11972/SEP is now in the chain-of-trust
	DS=11972/SHA-256 verifies DNSKEY=11972/SEP
	Found 2 RRSIGs over DNSKEY RRset
	`regzone.cz. 3600 IN RRSIG ( DNSKEY 13 2 3600 20270115151059 20260917131059 11972 regzone.cz. 8fjG268+KpkkIFHirCXxeYe+GMyMiqWB5gs8cZ9pSbOr/QD6qrKrBVtyWVPQMzJ7mwU/2+i/RHgl 6y4f2SbAkw== )`
	`regzone.cz. 3600 IN RRSIG ( DNSKEY 13 2 3600 20270115151059 20260917131059 23367 regzone.cz. /y9KkNhsg8Sryf/nYWNLPpcYdlycCher9z9LmPtCI12wlb9pZHa+QflIJ3HPcHquzFn4FDVjSauZ 2K5AY4Z07w== )`
	RRSIG=11972 and DNSKEY=11972/SEP verifies the DNSKEY RRset
	RRSIG=23367 and DNSKEY=23367 verifies the DNSKEY RRset
	DNSKEY=23367 is now in the chain-of-trust
	Query to ns1.regzone.de for regzone.cz/A
	Received 161 bytes from 23.92.29.43
	;; Response received from [23.92.29.43] 161 octets ;; HEADER SECTION ;; id = 45637 ;; 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) ;; regzone.cz. IN A ;; ANSWER SECTION (2 records) regzone.cz. 300 IN A 217.198.113.80 regzone.cz. 300 IN RRSIG ( A 13 2 300 20270115151059 20260917131059 23367 regzone.cz. BIXzbuvkbv/Ei5YRuAxIDXhdCGO/zG7azxeHiSdxpaxcbYUN/ilat38zjV/+JWc+SwYbtayUxYzp xl9218wAsA== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	ns1.regzone.de is authoritative for regzone.cz
	Found RRSIG signed by regzone.cz zone
	Query to ns1.regzone.cz for regzone.cz/SOA
	Received 207 bytes from 217.198.113.10
	;; Response received from [217.198.113.10] 207 octets ;; HEADER SECTION ;; id = 7896 ;; 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) ;; regzone.cz. IN SOA ;; ANSWER SECTION (2 records) regzone.cz. 3600 IN SOA ( ns1.regzone.cz. administrator.czechia.cz. 2026091702 ;serial 10800 ;refresh 1800 ;retry 1814400 ;expire 3600 ;minimum ) regzone.cz. 3600 IN RRSIG ( SOA 13 2 3600 20270115151059 20260917131059 23367 regzone.cz. I1CrgcYS+leg2F/Sf18RiYcXOeUie3MlPvgI1uXVj4VY5XCLKtjEVroFbjx72qOD4AytrQDCP4i8 yVdD1Eh55w== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Query to ns1.regzone.info for regzone.cz/SOA
	Received 207 bytes from 81.0.233.10
	;; Response received from [81.0.233.10] 207 octets ;; HEADER SECTION ;; id = 10477 ;; 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) ;; regzone.cz. IN SOA ;; ANSWER SECTION (2 records) regzone.cz. 3600 IN SOA ( ns1.regzone.cz. administrator.czechia.cz. 2026091702 ;serial 10800 ;refresh 1800 ;retry 1814400 ;expire 3600 ;minimum ) regzone.cz. 3600 IN RRSIG ( SOA 13 2 3600 20270115151059 20260917131059 23367 regzone.cz. I1CrgcYS+leg2F/Sf18RiYcXOeUie3MlPvgI1uXVj4VY5XCLKtjEVroFbjx72qOD4AytrQDCP4i8 yVdD1Eh55w== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	Query to ns1.regzone.de for regzone.cz/A
	regzone.cz A RR has value 217.198.113.80
	Found 1 RRSIGs over A RRset
	`regzone.cz. 300 IN RRSIG ( A 13 2 300 20270115151059 20260917131059 23367 regzone.cz. BIXzbuvkbv/Ei5YRuAxIDXhdCGO/zG7azxeHiSdxpaxcbYUN/ilat38zjV/+JWc+SwYbtayUxYzp xl9218wAsA== )`
	RRSIG=23367 and DNSKEY=23367 verifies the A RRset

regzone.cz

	Query to ns1.regzone.info for regzone.cz/A
	Received 161 bytes from 81.0.233.10
	;; Response received from [81.0.233.10] 161 octets ;; HEADER SECTION ;; id = 23129 ;; 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) ;; regzone.cz. IN A ;; ANSWER SECTION (2 records) regzone.cz. 300 IN A 217.198.113.80 regzone.cz. 300 IN RRSIG ( A 13 2 300 20270115151059 20260917131059 23367 regzone.cz. BIXzbuvkbv/Ei5YRuAxIDXhdCGO/zG7azxeHiSdxpaxcbYUN/ilat38zjV/+JWc+SwYbtayUxYzp xl9218wAsA== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	ns1.regzone.info is authoritative for regzone.cz
	Found RRSIG signed by regzone.cz zone
	Query to ns1.regzone.info for regzone.cz/A
	regzone.cz A RR has value 217.198.113.80
	Found 1 RRSIGs over A RRset
	`regzone.cz. 300 IN RRSIG ( A 13 2 300 20270115151059 20260917131059 23367 regzone.cz. BIXzbuvkbv/Ei5YRuAxIDXhdCGO/zG7azxeHiSdxpaxcbYUN/ilat38zjV/+JWc+SwYbtayUxYzp xl9218wAsA== )`
	RRSIG=23367 and DNSKEY=23367 verifies the A RRset

regzone.cz

	Query to ns1.regzone.cz for regzone.cz/A
	Received 161 bytes from 217.198.113.10
	;; Response received from [217.198.113.10] 161 octets ;; HEADER SECTION ;; id = 65279 ;; 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) ;; regzone.cz. IN A ;; ANSWER SECTION (2 records) regzone.cz. 300 IN A 217.198.113.80 regzone.cz. 300 IN RRSIG ( A 13 2 300 20270115151059 20260917131059 23367 regzone.cz. BIXzbuvkbv/Ei5YRuAxIDXhdCGO/zG7azxeHiSdxpaxcbYUN/ilat38zjV/+JWc+SwYbtayUxYzp xl9218wAsA== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; { "EDNS-VERSION": 0 }
	ns1.regzone.cz is authoritative for regzone.cz
	Found RRSIG signed by regzone.cz zone
	Query to ns1.regzone.cz for regzone.cz/A
	regzone.cz A RR has value 217.198.113.80
	Found 1 RRSIGs over A RRset
	`regzone.cz. 300 IN RRSIG ( A 13 2 300 20270115151059 20260917131059 23367 regzone.cz. BIXzbuvkbv/Ei5YRuAxIDXhdCGO/zG7azxeHiSdxpaxcbYUN/ilat38zjV/+JWc+SwYbtayUxYzp xl9218wAsA== )`
	RRSIG=23367 and DNSKEY=23367 verifies the A RRset

Move your mouse over any or symbols for remediation hints.

Want a second opinion? Test regzone.cz at dnsviz.net.

DNSSEC Debugger

↓ Advanced options ↑ Advanced options

Trust Anchor:
Name Servers: