DNSSEC Analyzer

Domain Name:

Time: 2021-04-22 10:35:49 UTC, NTP stratum 4

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 i.root-servers.net for ./DNSKEY
	Received 865 bytes from 192.36.148.17
	;; Answer received from 192.36.148.17 (865 bytes) ;; HEADER SECTION ;; id = 4789 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 3 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4096 ;; option: ;; QUESTION SECTION (1 record) ;; . IN DNSKEY ;; ANSWER SECTION (3 records) . 172800 IN DNSKEY ( 257 3 8 AwEAAaz/tAm8yTn4Mfeh5eyI96WSVexTBAvkMgJzkKTOiW1vkIbzxeF3+/4RgWOq7HrxRixHlFlE xOLAJr5emLvN7SWXgnLh4+B5xQlNVz8Og8kvArMtNROxVQuCaSnIDdD5LKyWbRd2n9WGe2R8PzgC mr3EgVLrjyBxWezF0jLHwVN8efS3rCj/EWgvIWgb9tarpVUDK/b58Da+sqqls3eNbuv7pr+eoZG+ SrDK6nWeL3c6H5Apxz7LjVc1uTIdsIXxuOLYA4/ilBmSVIzuDWfdRUfhHdY6+cn8HFRm+2hM8AnX GXws9555KrUB5qihylGa8subX2Nn6UwNR1AkUTV74bU= ) ; Key ID = 20326 . 172800 IN DNSKEY ( 256 3 8 AwEAAa+HvD7XXjmL+1htThUQyZW7oWGnjzKHJASg3TSR5Bmu5LfnSVW7fxqZa2oAYo2ionIQWyqA j/loApzg8GNMhyIibftPJso54uWRQ2GaoMrwLD5SLu676kf7urJq6nqdjNC0aJM/C888li69lVH6 tiu2tZm1NH3cmgfnMUJpD60bsrDUqs7XwftmNkdkHa4ltQbM3UNPyfTaNBQYoH3wpOpSjdk3tyDR nreBO6Idrw+DGf/rve4sL3qiSaXfYIkcwAwozxR34iHU5dbCDs8S6FmZYhoSVKVgNSUkudxhd9/6 RrZkYRgvwRsQXl3UwsacU1DsXcORqIC+7NlQ6M2OJVU= ) ; Key ID = 14631 . 172800 IN RRSIG ( DNSKEY 8 0 172800 20210512000000 20210421000000 20326 . bx5MOQGiU0gAwVPCF6fPBYdApVZCvs4fZ3603lzlRdtiHNsNSk2j/mVU7UD6oZkA/q/AIucEPGMD Lua0HNNnfhW8QsYssPHURJpcOUhgt17GinADGwADQYSI6fH12kFnb5wIZ/jznJ58dCdJDr0E7tg6 GarIqeu190nLM+sp75CNlKEG3HrrdSIGLWY8CFU1wLcU43ZAXaCiO5D6XwV8j7WUOs0n8XB48JzO yq4nZ/9Pt6Nl1QWT1UMrGZPPpBBeBKFeggIiGmDuzCn/nrk8F5zuN8f8RvhCxJZi1Kf6rEB0l79X XZ+JnpyjIJrNSNsDxeTQkO5NgXOrols1Gxv/QA== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4096 ;; option:
	Found 2 DNSKEY records for .
	`. 172800 IN DNSKEY ( 257 3 8 AwEAAaz/tAm8yTn4Mfeh5eyI96WSVexTBAvkMgJzkKTOiW1vkIbzxeF3+/4RgWOq7HrxRixHlFlE xOLAJr5emLvN7SWXgnLh4+B5xQlNVz8Og8kvArMtNROxVQuCaSnIDdD5LKyWbRd2n9WGe2R8PzgC mr3EgVLrjyBxWezF0jLHwVN8efS3rCj/EWgvIWgb9tarpVUDK/b58Da+sqqls3eNbuv7pr+eoZG+ SrDK6nWeL3c6H5Apxz7LjVc1uTIdsIXxuOLYA4/ilBmSVIzuDWfdRUfhHdY6+cn8HFRm+2hM8AnX GXws9555KrUB5qihylGa8subX2Nn6UwNR1AkUTV74bU= ) ; Key ID = 20326`
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAa+HvD7XXjmL+1htThUQyZW7oWGnjzKHJASg3TSR5Bmu5LfnSVW7fxqZa2oAYo2ionIQWyqA j/loApzg8GNMhyIibftPJso54uWRQ2GaoMrwLD5SLu676kf7urJq6nqdjNC0aJM/C888li69lVH6 tiu2tZm1NH3cmgfnMUJpD60bsrDUqs7XwftmNkdkHa4ltQbM3UNPyfTaNBQYoH3wpOpSjdk3tyDR nreBO6Idrw+DGf/rve4sL3qiSaXfYIkcwAwozxR34iHU5dbCDs8S6FmZYhoSVKVgNSUkudxhd9/6 RrZkYRgvwRsQXl3UwsacU1DsXcORqIC+7NlQ6M2OJVU= ) ; Key ID = 14631`
	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 20210512000000 20210421000000 20326 . bx5MOQGiU0gAwVPCF6fPBYdApVZCvs4fZ3603lzlRdtiHNsNSk2j/mVU7UD6oZkA/q/AIucEPGMD Lua0HNNnfhW8QsYssPHURJpcOUhgt17GinADGwADQYSI6fH12kFnb5wIZ/jznJ58dCdJDr0E7tg6 GarIqeu190nLM+sp75CNlKEG3HrrdSIGLWY8CFU1wLcU43ZAXaCiO5D6XwV8j7WUOs0n8XB48JzO yq4nZ/9Pt6Nl1QWT1UMrGZPPpBBeBKFeggIiGmDuzCn/nrk8F5zuN8f8RvhCxJZi1Kf6rEB0l79X XZ+JnpyjIJrNSNsDxeTQkO5NgXOrols1Gxv/QA== )`
	RRSIG=20326 and DNSKEY=20326/SEP verifies the DNSKEY RRset
	DNSKEY=14631 is now in the chain-of-trust
	Query to f.root-servers.net for nic.cz/A
	Received 613 bytes from 192.5.5.241
	;; Answer received from 192.5.5.241 (613 bytes) ;; HEADER SECTION ;; id = 63955 ;; qr = 1 aa = 0 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 0 nscount = 6 arcount = 9 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1472 ;; option: ;; 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 20210505050000 20210422040000 14631 . jlaJap5Y5std+mIbLaa3bobavF6/kx4jv5rhuEPh1C2DWI5oXPuNack5QrfgjFTVFMFU8nsnH/mi vqSsKr0fgw50uh3sdus0EpAA3N8qDRD5LG+bloTuFjHOg409Nw3k6/l7ZzpaaWs4kwZGjjurFt0a EbPckwG8hXicNhKKuGhbD6wq9+k8SlZms+xjkCJuOA8H3Uu94p5lQ8QF5BqrMtmJhUph7OC9CzHi d740pS6R/9Rw5lcdUzzaJElIOZ5epZw1nR+zHdToKUtoKGEDk/2hoRN7zFySii0AS4G0MsIQt3MJ P1lilAVC8+CjNNKRQdwu5NWydpd1Ck958yXWGQ== ) ;; 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 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1472 ;; option:
	Query to f.root-servers.net for cz/DNSKEY
	Received 613 bytes from 192.5.5.241
	;; Answer received from 192.5.5.241 (613 bytes) ;; HEADER SECTION ;; id = 2669 ;; qr = 1 aa = 0 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 0 nscount = 6 arcount = 9 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1472 ;; option: ;; 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 20210505050000 20210422040000 14631 . jlaJap5Y5std+mIbLaa3bobavF6/kx4jv5rhuEPh1C2DWI5oXPuNack5QrfgjFTVFMFU8nsnH/mi vqSsKr0fgw50uh3sdus0EpAA3N8qDRD5LG+bloTuFjHOg409Nw3k6/l7ZzpaaWs4kwZGjjurFt0a EbPckwG8hXicNhKKuGhbD6wq9+k8SlZms+xjkCJuOA8H3Uu94p5lQ8QF5BqrMtmJhUph7OC9CzHi d740pS6R/9Rw5lcdUzzaJElIOZ5epZw1nR+zHdToKUtoKGEDk/2hoRN7zFySii0AS4G0MsIQt3MJ P1lilAVC8+CjNNKRQdwu5NWydpd1Ck958yXWGQ== ) ;; 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 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1472 ;; option:
	Found child zone cz

	Checking DS between . and cz
	Query to g.root-servers.net for cz/DS
	Received 366 bytes from 192.112.36.4
	;; Answer received from 192.112.36.4 (366 bytes) ;; HEADER SECTION ;; id = 1040 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 2 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4096 ;; option: ;; 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 20210505050000 20210422040000 14631 . jlaJap5Y5std+mIbLaa3bobavF6/kx4jv5rhuEPh1C2DWI5oXPuNack5QrfgjFTVFMFU8nsnH/mi vqSsKr0fgw50uh3sdus0EpAA3N8qDRD5LG+bloTuFjHOg409Nw3k6/l7ZzpaaWs4kwZGjjurFt0a EbPckwG8hXicNhKKuGhbD6wq9+k8SlZms+xjkCJuOA8H3Uu94p5lQ8QF5BqrMtmJhUph7OC9CzHi d740pS6R/9Rw5lcdUzzaJElIOZ5epZw1nR+zHdToKUtoKGEDk/2hoRN7zFySii0AS4G0MsIQt3MJ P1lilAVC8+CjNNKRQdwu5NWydpd1Ck958yXWGQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4096 ;; option:
	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 20210505050000 20210422040000 14631 . jlaJap5Y5std+mIbLaa3bobavF6/kx4jv5rhuEPh1C2DWI5oXPuNack5QrfgjFTVFMFU8nsnH/mi vqSsKr0fgw50uh3sdus0EpAA3N8qDRD5LG+bloTuFjHOg409Nw3k6/l7ZzpaaWs4kwZGjjurFt0a EbPckwG8hXicNhKKuGhbD6wq9+k8SlZms+xjkCJuOA8H3Uu94p5lQ8QF5BqrMtmJhUph7OC9CzHi d740pS6R/9Rw5lcdUzzaJElIOZ5epZw1nR+zHdToKUtoKGEDk/2hoRN7zFySii0AS4G0MsIQt3MJ P1lilAVC8+CjNNKRQdwu5NWydpd1Ck958yXWGQ== )`
	RRSIG=14631 and DNSKEY=14631 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 387 bytes from 194.0.14.1
	;; Answer received from 194.0.14.1 (387 bytes) ;; HEADER SECTION ;; id = 63786 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 4 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; cz. IN DNSKEY ;; ANSWER SECTION (4 records) cz. 18000 IN DNSKEY ( 256 3 13 h1Ft69u2wLt1FRU5PRbDkxStIrQqSTqgIz/nVFgoCpvm217rjwubDueTY3VCT1mNO0xC76IjyQcQ 4hWTXCZVVQ== ) ; Key ID = 17014 cz. 18000 IN DNSKEY ( 257 3 13 nqzH7xP1QU5UOVy/VvxFSlrB/XgX9JDJzj51PzIj35TXjZTyalTlAT/f7PAfaSD5mEG1N8Vk9NmI 2nxgQqhzDQ== ) ; Key ID = 20237 cz. 18000 IN RRSIG ( DNSKEY 13 1 18000 20210427000000 20210413000000 20237 cz. MneJzjrx7lN42UBcz2h4TvZv/8/iigJEKXJwGd17aLkYYBaawN0e+QmcH3ldcyVJ73K8cK+w1X+t r0mbeDPu7w== ) cz. 18000 IN RRSIG ( DNSKEY 13 1 18000 20210506072640 20210422090532 17014 cz. ucgKUZpcCqYc8iMzFdZq4WtEFwpEHDOMbiT4vhrAtb/p2DJhvk9+DtaQdNghi1JJ5kRYKadwAEqo Ya0vzax1FA== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Found 2 DNSKEY records for cz
	`cz. 18000 IN DNSKEY ( 256 3 13 h1Ft69u2wLt1FRU5PRbDkxStIrQqSTqgIz/nVFgoCpvm217rjwubDueTY3VCT1mNO0xC76IjyQcQ 4hWTXCZVVQ== ) ; Key ID = 17014`
	`cz. 18000 IN DNSKEY ( 257 3 13 nqzH7xP1QU5UOVy/VvxFSlrB/XgX9JDJzj51PzIj35TXjZTyalTlAT/f7PAfaSD5mEG1N8Vk9NmI 2nxgQqhzDQ== ) ; Key ID = 20237`
	DNSKEY=20237/SEP is now in the chain-of-trust
	DS=20237/SHA-256 verifies DNSKEY=20237/SEP
	Found 2 RRSIGs over DNSKEY RRset
	`cz. 18000 IN RRSIG ( DNSKEY 13 1 18000 20210427000000 20210413000000 20237 cz. MneJzjrx7lN42UBcz2h4TvZv/8/iigJEKXJwGd17aLkYYBaawN0e+QmcH3ldcyVJ73K8cK+w1X+t r0mbeDPu7w== )`
	`cz. 18000 IN RRSIG ( DNSKEY 13 1 18000 20210506072640 20210422090532 17014 cz. ucgKUZpcCqYc8iMzFdZq4WtEFwpEHDOMbiT4vhrAtb/p2DJhvk9+DtaQdNghi1JJ5kRYKadwAEqo Ya0vzax1FA== )`
	RRSIG=20237 and DNSKEY=20237/SEP verifies the DNSKEY RRset
	RRSIG=17014 and DNSKEY=17014 verifies the DNSKEY RRset
	DNSKEY=17014 is now in the chain-of-trust
	Query to c.ns.nic.cz for nic.cz/A
	Received 153 bytes from 194.0.14.1
	;; Answer received from 194.0.14.1 (153 bytes) ;; HEADER SECTION ;; id = 44657 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 2 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; 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 20210505022547 20210421005547 46829 nic.cz. EcOBTAnLSUJzu3GyMNQRka/3VTkjY4dUwC8Q0KJPEtCg+gEklkKVkgT9o8syjf7QiyR8opP+lYWy uAjjy4hNIw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	c.ns.nic.cz is authoritative for nic.cz
	Query to a.ns.nic.cz for nic.cz/DNSKEY
	Received 297 bytes from 194.0.12.1
	;; Answer received from 194.0.12.1 (297 bytes) ;; HEADER SECTION ;; id = 4639 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 3 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; nic.cz. IN DNSKEY ;; ANSWER SECTION (3 records) nic.cz. 1800 IN DNSKEY ( 256 3 13 cd4qlXpGQT1T+ubbIAucAfiXRGNhF4zQIfnYm/8FMiHXHxNVzT5V/0KiLKWZM2+XnGa98WMMdkyr lcmTYTJ9lA== ) ; Key ID = 46829 nic.cz. 1800 IN DNSKEY ( 257 3 13 MYzLnpsdGzrMOXX+fRAmVxWpC3vyeHgPBNO5pvVTSOFalmyoYr+ozmT9DXpj0jDJrxZV/xcb59qJ 3OP8X+l+Jw== ) ; Key ID = 20322 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20210429172342 20210415155342 20322 nic.cz. tPWGf7QLDkOl9a5C6EJggFSMJP76cYIVGdgaTVITeN5bJRLkVyHrvugI5NEUoYtMKYodnewpJfgo pbChzqASPw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Found child zone nic.cz
	Attempting to learn nameservers for nic.cz
	Query to c.ns.nic.cz for nic.cz/NS
	Received 932 bytes from 194.0.14.1
	;; Answer received from 194.0.14.1 (932 bytes) ;; HEADER SECTION ;; id = 3349 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 4 nscount = 0 arcount = 13 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; 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 20210505022547 20210421005547 46829 nic.cz. a7znwLzbAwKr+EZnJqUALp8/fi88g92XJiA5nEdFZev/TUoi05nyLS5S45fQk7FGmeZXWBTvqWN6 f+NZyurwAA== ) ;; 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 20210505022547 20210421005547 46829 nic.cz. y6Ap76t9h9sq1UB0VnQrLYKLrgI1/Ir+xoFmhq0YHduSCYKdDIUE8a2ujsh2FR1XkK77t39pKfT4 /aP0bh9/bA== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20210505022547 20210421005547 46829 nic.cz. or+0am8HoulhsC+9GeS5PE3vCqeZexoP0//uVhL7KTCFrJZ+0wjX7H0BCDzPdUIQGyrjWWzxeSE/ zxyQp6lkGg== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20210505022547 20210421005547 46829 nic.cz. lKl4uuQt/aUdlYSj3vAFKKRa5v/WOS7H/qGDcKvWp8AqzqFltFJ5mk5ktNDG3CfL8Rk8P2idrHG+ WRG6or7pcw== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20210505022547 20210421005547 46829 nic.cz. stJSS2x9+oQ3Naz9EQDTnpQahusPqpBQ2vgLP8+PzqSkN96BDXm6EvUh1ha344rKteVrbtiTdy/b k09cb0aZ9g== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20210505022547 20210421005547 46829 nic.cz. NtIxtvzoWsEzKHyjYblMN5nasl2EAwL/084cCY6Wx3jVdEutYiQIEmDTzJlUeOnF8eWCoBhs5YdM rEAeniwVzQ== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20210505022547 20210421005547 46829 nic.cz. 18qETRqf9ucgrRak2bI/u6njcJE+bhmiODJzmMQsKjTSk9gTgyhEt2hoqfNlOMyv/bitx3m1nifm fupDDHR1zw== ) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	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 d.ns.nic.cz for nic.cz/DS
	Received 181 bytes from 193.29.206.1
	;; Answer received from 193.29.206.1 (181 bytes) ;; HEADER SECTION ;; id = 65242 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 2 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; nic.cz. IN DS ;; ANSWER SECTION (2 records) nic.cz. 3600 IN DS ( 20322 13 2 9ee8e440b0634b51b2d6f20c1cd352e8f40cc148421185d0cd9b662edb748846 ) nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20210502055233 20210420043545 17014 cz. Dht70RV88oxJIaRorixq2zwfWgxO6CCcbZ1Y4aoTdYH2uaQYjQbcvX/XcA03AJCyMQDILeIg4pUp mmzAu282ew== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Found 1 DS records for nic.cz in the cz zone
	DS=20322/SHA-256 has algorithm ECDSAP256SHA256
	Found 1 RRSIGs over DS RRset
	`nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20210502055233 20210420043545 17014 cz. Dht70RV88oxJIaRorixq2zwfWgxO6CCcbZ1Y4aoTdYH2uaQYjQbcvX/XcA03AJCyMQDILeIg4pUp mmzAu282ew== )`
	RRSIG=17014 and DNSKEY=17014 verifies the DS RRset
	DS=20322/SHA-256 is now in the chain-of-trust
	`nic.cz. 3600 IN DS ( 20322 13 2 9ee8e440b0634b51b2d6f20c1cd352e8f40cc148421185d0cd9b662edb748846 )`
	Query to d.ns.nic.cz for nic.cz/DNSKEY
	Received 297 bytes from 193.29.206.1
	;; Answer received from 193.29.206.1 (297 bytes) ;; HEADER SECTION ;; id = 20742 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 3 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; nic.cz. IN DNSKEY ;; ANSWER SECTION (3 records) nic.cz. 1800 IN DNSKEY ( 256 3 13 cd4qlXpGQT1T+ubbIAucAfiXRGNhF4zQIfnYm/8FMiHXHxNVzT5V/0KiLKWZM2+XnGa98WMMdkyr lcmTYTJ9lA== ) ; Key ID = 46829 nic.cz. 1800 IN DNSKEY ( 257 3 13 MYzLnpsdGzrMOXX+fRAmVxWpC3vyeHgPBNO5pvVTSOFalmyoYr+ozmT9DXpj0jDJrxZV/xcb59qJ 3OP8X+l+Jw== ) ; Key ID = 20322 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20210429172342 20210415155342 20322 nic.cz. tPWGf7QLDkOl9a5C6EJggFSMJP76cYIVGdgaTVITeN5bJRLkVyHrvugI5NEUoYtMKYodnewpJfgo pbChzqASPw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Found 2 DNSKEY records for nic.cz
	`nic.cz. 1800 IN DNSKEY ( 256 3 13 cd4qlXpGQT1T+ubbIAucAfiXRGNhF4zQIfnYm/8FMiHXHxNVzT5V/0KiLKWZM2+XnGa98WMMdkyr lcmTYTJ9lA== ) ; Key ID = 46829`
	`nic.cz. 1800 IN DNSKEY ( 257 3 13 MYzLnpsdGzrMOXX+fRAmVxWpC3vyeHgPBNO5pvVTSOFalmyoYr+ozmT9DXpj0jDJrxZV/xcb59qJ 3OP8X+l+Jw== ) ; Key ID = 20322`
	DNSKEY=20322/SEP is now in the chain-of-trust
	DS=20322/SHA-256 verifies DNSKEY=20322/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20210429172342 20210415155342 20322 nic.cz. tPWGf7QLDkOl9a5C6EJggFSMJP76cYIVGdgaTVITeN5bJRLkVyHrvugI5NEUoYtMKYodnewpJfgo pbChzqASPw== )`
	RRSIG=20322 and DNSKEY=20322/SEP verifies the DNSKEY RRset
	DNSKEY=46829 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
	;; Answer received from 194.0.13.1 (153 bytes) ;; HEADER SECTION ;; id = 57504 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 2 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; 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 20210505022547 20210421005547 46829 nic.cz. EcOBTAnLSUJzu3GyMNQRka/3VTkjY4dUwC8Q0KJPEtCg+gEklkKVkgT9o8syjf7QiyR8opP+lYWy uAjjy4hNIw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	b.ns.nic.cz is authoritative for nic.cz
	Found RRSIG signed by nic.cz zone
	Query to d.ns.nic.cz for nic.cz/SOA
	Received 189 bytes from 193.29.206.1
	;; Answer received from 193.29.206.1 (189 bytes) ;; HEADER SECTION ;; id = 51231 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 2 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; nic.cz. IN SOA ;; ANSWER SECTION (2 records) nic.cz. 1800 IN SOA ( a.ns.nic.cz. hostmaster.nic.cz. 1619077723 ;serial 10800 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20210506074843 20210422061843 46829 nic.cz. OH+/4HtoHk/STZtvbty09l8nfjkNB8/G9NRwPxyw2iKhOM0jEO46NgyAj9srIleZJNvooyFNYxbi DzRgQzncEA== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Query to a.ns.nic.cz for nic.cz/SOA
	Received 189 bytes from 194.0.12.1
	;; Answer received from 194.0.12.1 (189 bytes) ;; HEADER SECTION ;; id = 2686 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 2 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; QUESTION SECTION (1 record) ;; nic.cz. IN SOA ;; ANSWER SECTION (2 records) nic.cz. 1800 IN SOA ( a.ns.nic.cz. hostmaster.nic.cz. 1619077723 ;serial 10800 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20210506074843 20210422061843 46829 nic.cz. OH+/4HtoHk/STZtvbty09l8nfjkNB8/G9NRwPxyw2iKhOM0jEO46NgyAj9srIleZJNvooyFNYxbi DzRgQzncEA== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Query to b.ns.nic.cz for nic.cz/A
	Received 153 bytes from 194.0.13.1
	;; Answer received from 194.0.13.1 (153 bytes) ;; HEADER SECTION ;; id = 38615 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 2 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; 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 20210505022547 20210421005547 46829 nic.cz. EcOBTAnLSUJzu3GyMNQRka/3VTkjY4dUwC8Q0KJPEtCg+gEklkKVkgT9o8syjf7QiyR8opP+lYWy uAjjy4hNIw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	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 20210505022547 20210421005547 46829 nic.cz. EcOBTAnLSUJzu3GyMNQRka/3VTkjY4dUwC8Q0KJPEtCg+gEklkKVkgT9o8syjf7QiyR8opP+lYWy uAjjy4hNIw== )`
	RRSIG=46829 and DNSKEY=46829 verifies the A RRset

nic.cz

	Query to d.ns.nic.cz for nic.cz/A
	Received 153 bytes from 193.29.206.1
	;; Answer received from 193.29.206.1 (153 bytes) ;; HEADER SECTION ;; id = 31828 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 2 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; 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 20210505022547 20210421005547 46829 nic.cz. EcOBTAnLSUJzu3GyMNQRka/3VTkjY4dUwC8Q0KJPEtCg+gEklkKVkgT9o8syjf7QiyR8opP+lYWy uAjjy4hNIw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	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 153 bytes from 193.29.206.1
	;; Answer received from 193.29.206.1 (153 bytes) ;; HEADER SECTION ;; id = 42721 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 2 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; 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 20210505022547 20210421005547 46829 nic.cz. EcOBTAnLSUJzu3GyMNQRka/3VTkjY4dUwC8Q0KJPEtCg+gEklkKVkgT9o8syjf7QiyR8opP+lYWy uAjjy4hNIw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	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 20210505022547 20210421005547 46829 nic.cz. EcOBTAnLSUJzu3GyMNQRka/3VTkjY4dUwC8Q0KJPEtCg+gEklkKVkgT9o8syjf7QiyR8opP+lYWy uAjjy4hNIw== )`
	RRSIG=46829 and DNSKEY=46829 verifies the A RRset

nic.cz

	Query to a.ns.nic.cz for nic.cz/A
	Received 153 bytes from 194.0.12.1
	;; Answer received from 194.0.12.1 (153 bytes) ;; HEADER SECTION ;; id = 64716 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 2 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; 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 20210505022547 20210421005547 46829 nic.cz. EcOBTAnLSUJzu3GyMNQRka/3VTkjY4dUwC8Q0KJPEtCg+gEklkKVkgT9o8syjf7QiyR8opP+lYWy uAjjy4hNIw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	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
	;; Answer received from 194.0.12.1 (153 bytes) ;; HEADER SECTION ;; id = 36241 ;; qr = 1 aa = 1 tc = 0 rd = 0 opcode = QUERY ;; ra = 0 z = 0 ad = 0 cd = 0 rcode = NOERROR ;; qdcount = 1 ancount = 2 nscount = 0 arcount = 1 ;; do = 1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option: ;; 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 20210505022547 20210421005547 46829 nic.cz. EcOBTAnLSUJzu3GyMNQRka/3VTkjY4dUwC8Q0KJPEtCg+gEklkKVkgT9o8syjf7QiyR8opP+lYWy uAjjy4hNIw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	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 20210505022547 20210421005547 46829 nic.cz. EcOBTAnLSUJzu3GyMNQRka/3VTkjY4dUwC8Q0KJPEtCg+gEklkKVkgT9o8syjf7QiyR8opP+lYWy uAjjy4hNIw== )`
	RRSIG=46829 and DNSKEY=46829 verifies the A RRset

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