DNSSEC Analyzer

Domain Name:

Time: 2023-10-02 20:32:17 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 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 = 58339 ;; 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: 4096 ;; option: ;; QUESTION SECTION (1 record) ;; . IN DNSKEY ;; ANSWER SECTION (4 records) . 172800 IN DNSKEY ( 256 3 8 AwEAAcEtWatIO3exfN3A+WnZl7AVEBA3crRrrwKTfnmcdLt79C3DCOF1JX5zb4s84v0OxwlOVg+T R8VpkuYynMp3PQXLomLxe7j7PlxqEBo1LQaWfqyymCuF7rKebTLB5yZcr8/QUPwk/weLyguX6iVN DjIZOmeMqPkGJtDFp+EUfKgOa8AulKPLtsUL1W+1FT8sqroSxKXVXnhkEZN1O1zBxTG/z9xjwiPc d3//LSPUpEC9+rU2XIuCJq8nwAwJ7W6Rc49RxUT0Svc57HKqHjNuapvG0PCYh3bXCQzb7mb2pNwu erMFTzP5iEzXWZD7izLg9j3wEJ2Ia/WIEts/Tp9GIQM= ) ; Key ID = 11019 . 172800 IN DNSKEY ( 256 3 8 AwEAAddS95RV5uUtkUCN7vyvpb0kDZgmtXwN5Sj/d08+X7ND2sgWBabKnFhftrOsSx9DUhKR3gpM PIxac84Nou8Wzkiu2A/sTzP1F6KpCL8epgemdlZVd1ATHEjpB0KHIQmDjSEO/frGgi8ijQ2vDF3A MSrUwH7qntL1E5ufPHGKRM+agGghcAYfJHJN1dw7Ki3Fo22RDB3VZBxU9yJ3vl/T4hngeL7zK84v gl62tlJJw1rK5S/3U4p/bZarjtMFOHDfh0DEj1ywtRpkpPnge03gmINoa2tz+Kff67kbQb0NhHJY zPRpViaMEWZI9pgGH9ZyuFdNrNRx68XSiO7sya7/i+c= ) ; Key ID = 46780 . 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 RRSIG ( DNSKEY 8 0 172800 20231022000000 20231001000000 20326 . WQ+tzT8gKOYmaX8NLjusFmLz4zLVeeY3hAmZUKxl7/6LxY3lJh6qRIgLNBN7EkAhyTbjVVryUhEY ExIX/luU4fGmUCyxhYZwF+2bCv3uT4DaI8ssk3USVFFOR9wTkggzVYrtr2UH1PFmQ5hE//aiPfsy NEAisEXMZX3nUT/aCd5oZ6LlH53Nz9CZOa0vNHTu6erIg+mhAOzshcG9/BIfCrYJ1H5D5serTV1x t3Tvw2+KX6w3dG1Nb6vVNpe9Yj7Eb0B85FiqzoAM5jcwHiY+rovSbdVpmD3mIHXZ65wCiBGa6vQS nJQXwchjWQPnSDFLGuZh3dt89C65erw9grHteQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 4096 ;; option:
	Found 3 DNSKEY records for .
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAcEtWatIO3exfN3A+WnZl7AVEBA3crRrrwKTfnmcdLt79C3DCOF1JX5zb4s84v0OxwlOVg+T R8VpkuYynMp3PQXLomLxe7j7PlxqEBo1LQaWfqyymCuF7rKebTLB5yZcr8/QUPwk/weLyguX6iVN DjIZOmeMqPkGJtDFp+EUfKgOa8AulKPLtsUL1W+1FT8sqroSxKXVXnhkEZN1O1zBxTG/z9xjwiPc d3//LSPUpEC9+rU2XIuCJq8nwAwJ7W6Rc49RxUT0Svc57HKqHjNuapvG0PCYh3bXCQzb7mb2pNwu erMFTzP5iEzXWZD7izLg9j3wEJ2Ia/WIEts/Tp9GIQM= ) ; Key ID = 11019`
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAddS95RV5uUtkUCN7vyvpb0kDZgmtXwN5Sj/d08+X7ND2sgWBabKnFhftrOsSx9DUhKR3gpM PIxac84Nou8Wzkiu2A/sTzP1F6KpCL8epgemdlZVd1ATHEjpB0KHIQmDjSEO/frGgi8ijQ2vDF3A MSrUwH7qntL1E5ufPHGKRM+agGghcAYfJHJN1dw7Ki3Fo22RDB3VZBxU9yJ3vl/T4hngeL7zK84v gl62tlJJw1rK5S/3U4p/bZarjtMFOHDfh0DEj1ywtRpkpPnge03gmINoa2tz+Kff67kbQb0NhHJY zPRpViaMEWZI9pgGH9ZyuFdNrNRx68XSiO7sya7/i+c= ) ; Key ID = 46780`
	`. 172800 IN DNSKEY ( 257 3 8 AwEAAaz/tAm8yTn4Mfeh5eyI96WSVexTBAvkMgJzkKTOiW1vkIbzxeF3+/4RgWOq7HrxRixHlFlE xOLAJr5emLvN7SWXgnLh4+B5xQlNVz8Og8kvArMtNROxVQuCaSnIDdD5LKyWbRd2n9WGe2R8PzgC mr3EgVLrjyBxWezF0jLHwVN8efS3rCj/EWgvIWgb9tarpVUDK/b58Da+sqqls3eNbuv7pr+eoZG+ SrDK6nWeL3c6H5Apxz7LjVc1uTIdsIXxuOLYA4/ilBmSVIzuDWfdRUfhHdY6+cn8HFRm+2hM8AnX GXws9555KrUB5qihylGa8subX2Nn6UwNR1AkUTV74bU= ) ; Key ID = 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 20231022000000 20231001000000 20326 . WQ+tzT8gKOYmaX8NLjusFmLz4zLVeeY3hAmZUKxl7/6LxY3lJh6qRIgLNBN7EkAhyTbjVVryUhEY ExIX/luU4fGmUCyxhYZwF+2bCv3uT4DaI8ssk3USVFFOR9wTkggzVYrtr2UH1PFmQ5hE//aiPfsy NEAisEXMZX3nUT/aCd5oZ6LlH53Nz9CZOa0vNHTu6erIg+mhAOzshcG9/BIfCrYJ1H5D5serTV1x t3Tvw2+KX6w3dG1Nb6vVNpe9Yj7Eb0B85FiqzoAM5jcwHiY+rovSbdVpmD3mIHXZ65wCiBGa6vQS nJQXwchjWQPnSDFLGuZh3dt89C65erw9grHteQ== )`
	RRSIG=20326 and DNSKEY=20326/SEP verifies the DNSKEY RRset
	DNSKEY=11019 is now in the chain-of-trust
	DNSKEY=46780 is now in the chain-of-trust
	Query to l.root-servers.net for nic.cz/A
	Received 613 bytes from 199.7.83.42
	;; Response received from 199.7.83.42 (613 octets) ;; HEADER SECTION ;; id = 28079 ;; 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: 4096 ;; 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 20231015170000 20231002160000 46780 . IR3dS1i6yB0kgoqTyYNjh2v3XSoyYh9A2L/fpW21zqgMs3oGhui4YTas69+W/d9dUCGWYeo839a7 o8CvXIlQ9qxQNLapxuX2BIhi1CW8FXibMh07xA4K1k8XGmZrmpPSfLFwKqdZ/T6EOdtfXmPT5HvN 8Xw3ankKmoJyweB0BQQ8SXkpihU5YLX+9EPqqZ8TKRAeg5mIffG99OCQ3F2mkhU7vRUBPWrsax8E DmUG6Lgni3NNsMB2PV77V/RNB6IsFQehBGVpTC2cPETkTMMcxQYRtK8MgfjQTuZYv/UhbOtJwwyx ZsNmry0DAGck3iRTCgnQ1xI7h1IoQXDy6hccvg== ) ;; 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: 4096 ;; option:
	Query to c.root-servers.net for cz/DNSKEY
	Received 615 bytes from 192.33.4.12
	;; Response received from 192.33.4.12 (615 octets) ;; HEADER SECTION ;; id = 29966 ;; 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: 1232 ;; 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 d.ns.nic.cz. cz. 172800 IN NS c.ns.nic.cz. cz. 172800 IN NS b.ns.nic.cz. cz. 86400 IN DS ( 20237 13 2 cff0f3ecdbc529c1f0031ba1840bfb835853b9209ed1e508fff48451d7b778e2 ) cz. 86400 IN RRSIG ( DS 8 1 86400 20231015170000 20231002160000 46780 . IR3dS1i6yB0kgoqTyYNjh2v3XSoyYh9A2L/fpW21zqgMs3oGhui4YTas69+W/d9dUCGWYeo839a7 o8CvXIlQ9qxQNLapxuX2BIhi1CW8FXibMh07xA4K1k8XGmZrmpPSfLFwKqdZ/T6EOdtfXmPT5HvN 8Xw3ankKmoJyweB0BQQ8SXkpihU5YLX+9EPqqZ8TKRAeg5mIffG99OCQ3F2mkhU7vRUBPWrsax8E DmUG6Lgni3NNsMB2PV77V/RNB6IsFQehBGVpTC2cPETkTMMcxQYRtK8MgfjQTuZYv/UhbOtJwwyx ZsNmry0DAGck3iRTCgnQ1xI7h1IoQXDy6hccvg== ) ;; ADDITIONAL SECTION (9 records) d.ns.nic.cz. 172800 IN A 193.29.206.1 c.ns.nic.cz. 172800 IN A 194.0.14.1 b.ns.nic.cz. 172800 IN A 194.0.13.1 a.ns.nic.cz. 172800 IN A 194.0.12.1 d.ns.nic.cz. 172800 IN AAAA 2001:678:1::1 c.ns.nic.cz. 172800 IN AAAA 2001:678:11::1 b.ns.nic.cz. 172800 IN AAAA 2001:678:10::1 a.ns.nic.cz. 172800 IN AAAA 2001:678:f::1 ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Found child zone cz

	Checking DS between . and cz
	Query to a.root-servers.net for cz/DS
	Received 366 bytes from 198.41.0.4
	;; Response received from 198.41.0.4 (366 octets) ;; HEADER SECTION ;; id = 22819 ;; 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 20231015170000 20231002160000 46780 . IR3dS1i6yB0kgoqTyYNjh2v3XSoyYh9A2L/fpW21zqgMs3oGhui4YTas69+W/d9dUCGWYeo839a7 o8CvXIlQ9qxQNLapxuX2BIhi1CW8FXibMh07xA4K1k8XGmZrmpPSfLFwKqdZ/T6EOdtfXmPT5HvN 8Xw3ankKmoJyweB0BQQ8SXkpihU5YLX+9EPqqZ8TKRAeg5mIffG99OCQ3F2mkhU7vRUBPWrsax8E DmUG6Lgni3NNsMB2PV77V/RNB6IsFQehBGVpTC2cPETkTMMcxQYRtK8MgfjQTuZYv/UhbOtJwwyx ZsNmry0DAGck3iRTCgnQ1xI7h1IoQXDy6hccvg== ) ;; 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 20231015170000 20231002160000 46780 . IR3dS1i6yB0kgoqTyYNjh2v3XSoyYh9A2L/fpW21zqgMs3oGhui4YTas69+W/d9dUCGWYeo839a7 o8CvXIlQ9qxQNLapxuX2BIhi1CW8FXibMh07xA4K1k8XGmZrmpPSfLFwKqdZ/T6EOdtfXmPT5HvN 8Xw3ankKmoJyweB0BQQ8SXkpihU5YLX+9EPqqZ8TKRAeg5mIffG99OCQ3F2mkhU7vRUBPWrsax8E DmUG6Lgni3NNsMB2PV77V/RNB6IsFQehBGVpTC2cPETkTMMcxQYRtK8MgfjQTuZYv/UhbOtJwwyx ZsNmry0DAGck3iRTCgnQ1xI7h1IoQXDy6hccvg== )`
	RRSIG=46780 and DNSKEY=46780 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 = 43398 ;; 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) ;; cz. IN DNSKEY ;; ANSWER SECTION (3 records) cz. 3600 IN DNSKEY ( 256 3 13 gxKFhbIgCG/ulakClvJ0X00nHzu7VTVuP8R8JpozoSBXjHpV/tHc8heHLE0Xq5qqvvLFyR81ZQMF rGwFGvdXfg== ) ; Key ID = 20337 cz. 3600 IN DNSKEY ( 257 3 13 nqzH7xP1QU5UOVy/VvxFSlrB/XgX9JDJzj51PzIj35TXjZTyalTlAT/f7PAfaSD5mEG1N8Vk9NmI 2nxgQqhzDQ== ) ; Key ID = 20237 cz. 3600 IN RRSIG ( DNSKEY 13 1 3600 20231012122134 20230928105134 20237 cz. LYDZgva6lWnDCTyoHRkdjQwo0azyWQRKV9LawjvF5bEgMMghJgwmKjl7pvLNdCEuAP9luj5Iw9lU xh8NJqJk9Q== ) ;; 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. 3600 IN DNSKEY ( 256 3 13 gxKFhbIgCG/ulakClvJ0X00nHzu7VTVuP8R8JpozoSBXjHpV/tHc8heHLE0Xq5qqvvLFyR81ZQMF rGwFGvdXfg== ) ; Key ID = 20337`
	`cz. 3600 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 1 RRSIGs over DNSKEY RRset
	`cz. 3600 IN RRSIG ( DNSKEY 13 1 3600 20231012122134 20230928105134 20237 cz. LYDZgva6lWnDCTyoHRkdjQwo0azyWQRKV9LawjvF5bEgMMghJgwmKjl7pvLNdCEuAP9luj5Iw9lU xh8NJqJk9Q== )`
	RRSIG=20237 and DNSKEY=20237/SEP verifies the DNSKEY RRset
	DNSKEY=20337 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
	;; Response received from 194.0.14.1 (153 octets) ;; HEADER SECTION ;; id = 62205 ;; 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 20231010205553 20230926192553 51912 nic.cz. L30bDA1EVQcbqQeApteEGQtr1b9Jc4KNcAPwcdU9whCvwcZFbgw/+5YXDqNtebI5qU71OecnxrAh vZ3PkiYhQQ== ) ;; 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
	;; Response received from 194.0.12.1 (297 octets) ;; HEADER SECTION ;; id = 56282 ;; 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 aRZn3LXflut0dTH7i+rz7svwGSd7HRXTR+S8OjZI/MMXwNX+N3xInVmk9zjoE0oJOMizF+JM/U5O V2hscnrv8g== ) ; Key ID = 51912 nic.cz. 1800 IN DNSKEY ( 257 3 13 zZZ+keo2ZkDRM6x0juDyjhNJDGBNhkHyNQyCE2iz1uOtRBOM9547Ui35xtu2vjNMXClWMLN6W2Bu daKhy2rBTA== ) ; Key ID = 30531 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20231010222553 20230926205553 30531 nic.cz. /moBgO3SfIoBZcw8G6XjCCIBL6OVNaKVNETof/vHLsef6pdwd2f439d1kJT3c+07J8K/CNUE2E6e 1UAnf1Or6A== ) ;; 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 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 = 11682 ;; 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 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 20231010205553 20230926192553 51912 nic.cz. e0yMHFN8NF1L/X1mVT82FxHeI5NpEDq1bxQ+eQOK+B3GLNOvkYlV29QX3z+MCC01XCAXTKLjIrDZ 7NvyYlkdSQ== ) ;; 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 20231010205553 20230926192553 51912 nic.cz. RMXZZhTq0zNbhgKJg3BMvTItjbHQBwtEDOOCJV28k+KftRxfxXIrFQVfJK6gdTzoOsB15piQGWSg Y2CPHI972g== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20231010205553 20230926192553 51912 nic.cz. rRyobYajGnHBf2PjqxzYKH74qcze8cOKH07ERHC8G32M6ojCzDn5UnyVt2lgUuMipji1KXn7jgbf 92gx2mzFXA== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20231010205553 20230926192553 51912 nic.cz. nYLTEHAT3WPms4tNYzFWwH75m7PfQwaL3OWb4eOily6TG2/M0d+PQwokc4oHDPXckg+fsXB7F/v1 Oe2wrneptg== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20231010205553 20230926192553 51912 nic.cz. bvdbTgynHdW/+nKUvRFjrca4DsvWMZMDq+Rf+EQHUrem5c95hVXP9vUGCVJ7Yzd3IIqdPPbWaUoN oFeouwk8mg== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20231010205553 20230926192553 51912 nic.cz. tph8KUrSjB7fN+48+DCJI3vmYBZwMvuIwIxntQdeXQ9Te62N1SHfyNSlyeKOl08wmGhk70fpgdkc qUk/oTxFNw== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20231010205553 20230926192553 51912 nic.cz. 8zqVXVrsbdB05riRIDPkj9jbV67ZsSHWArxcEIwbhz7+v6epWvIwDCzBeKZbA0PmpEPmCh3lz45S 6Zu1Y1BEhA== ) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Found nic.cz nameservers: b.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz

nic.cz

	Checking DS between cz and nic.cz
	Query to c.ns.nic.cz for nic.cz/DS
	Received 181 bytes from 194.0.14.1
	;; Response received from 194.0.14.1 (181 octets) ;; HEADER SECTION ;; id = 23408 ;; 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 ( 30531 13 2 16368f924ddf5eea623de832fc5086d9f34d9906daff058b2968c30df9b2578f ) nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20231009131901 20230925114901 20337 cz. IVLBdgOSiZVkk7ow7QhfUKIzw7dw2Jc4CFETwOyhtt00GHq99nW/LCL+A4I89RToYVey1xpwbwoe kpMg93EKLA== ) ;; 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=30531/SHA-256 has algorithm ECDSAP256SHA256
	Found 1 RRSIGs over DS RRset
	`nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20231009131901 20230925114901 20337 cz. IVLBdgOSiZVkk7ow7QhfUKIzw7dw2Jc4CFETwOyhtt00GHq99nW/LCL+A4I89RToYVey1xpwbwoe kpMg93EKLA== )`
	RRSIG=20337 and DNSKEY=20337 verifies the DS RRset
	DS=30531/SHA-256 is now in the chain-of-trust
	`nic.cz. 3600 IN DS ( 30531 13 2 16368f924ddf5eea623de832fc5086d9f34d9906daff058b2968c30df9b2578f )`
	Query to b.ns.nic.cz for nic.cz/DNSKEY
	Received 297 bytes from 194.0.13.1
	;; Response received from 194.0.13.1 (297 octets) ;; HEADER SECTION ;; id = 44860 ;; 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 aRZn3LXflut0dTH7i+rz7svwGSd7HRXTR+S8OjZI/MMXwNX+N3xInVmk9zjoE0oJOMizF+JM/U5O V2hscnrv8g== ) ; Key ID = 51912 nic.cz. 1800 IN DNSKEY ( 257 3 13 zZZ+keo2ZkDRM6x0juDyjhNJDGBNhkHyNQyCE2iz1uOtRBOM9547Ui35xtu2vjNMXClWMLN6W2Bu daKhy2rBTA== ) ; Key ID = 30531 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20231010222553 20230926205553 30531 nic.cz. /moBgO3SfIoBZcw8G6XjCCIBL6OVNaKVNETof/vHLsef6pdwd2f439d1kJT3c+07J8K/CNUE2E6e 1UAnf1Or6A== ) ;; 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 aRZn3LXflut0dTH7i+rz7svwGSd7HRXTR+S8OjZI/MMXwNX+N3xInVmk9zjoE0oJOMizF+JM/U5O V2hscnrv8g== ) ; Key ID = 51912`
	`nic.cz. 1800 IN DNSKEY ( 257 3 13 zZZ+keo2ZkDRM6x0juDyjhNJDGBNhkHyNQyCE2iz1uOtRBOM9547Ui35xtu2vjNMXClWMLN6W2Bu daKhy2rBTA== ) ; Key ID = 30531`
	DNSKEY=30531/SEP is now in the chain-of-trust
	DS=30531/SHA-256 verifies DNSKEY=30531/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20231010222553 20230926205553 30531 nic.cz. /moBgO3SfIoBZcw8G6XjCCIBL6OVNaKVNETof/vHLsef6pdwd2f439d1kJT3c+07J8K/CNUE2E6e 1UAnf1Or6A== )`
	RRSIG=30531 and DNSKEY=30531/SEP verifies the DNSKEY RRset
	DNSKEY=51912 is now in the chain-of-trust
	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 = 53342 ;; 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 = 4 arcount = 13 ;; 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 20231010205553 20230926192553 51912 nic.cz. L30bDA1EVQcbqQeApteEGQtr1b9Jc4KNcAPwcdU9whCvwcZFbgw/+5YXDqNtebI5qU71OecnxrAh vZ3PkiYhQQ== ) ;; 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 20231010205553 20230926192553 51912 nic.cz. e0yMHFN8NF1L/X1mVT82FxHeI5NpEDq1bxQ+eQOK+B3GLNOvkYlV29QX3z+MCC01XCAXTKLjIrDZ 7NvyYlkdSQ== ) ;; 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 20231010205553 20230926192553 51912 nic.cz. RMXZZhTq0zNbhgKJg3BMvTItjbHQBwtEDOOCJV28k+KftRxfxXIrFQVfJK6gdTzoOsB15piQGWSg Y2CPHI972g== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20231010205553 20230926192553 51912 nic.cz. rRyobYajGnHBf2PjqxzYKH74qcze8cOKH07ERHC8G32M6ojCzDn5UnyVt2lgUuMipji1KXn7jgbf 92gx2mzFXA== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20231010205553 20230926192553 51912 nic.cz. nYLTEHAT3WPms4tNYzFWwH75m7PfQwaL3OWb4eOily6TG2/M0d+PQwokc4oHDPXckg+fsXB7F/v1 Oe2wrneptg== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20231010205553 20230926192553 51912 nic.cz. bvdbTgynHdW/+nKUvRFjrca4DsvWMZMDq+Rf+EQHUrem5c95hVXP9vUGCVJ7Yzd3IIqdPPbWaUoN oFeouwk8mg== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20231010205553 20230926192553 51912 nic.cz. tph8KUrSjB7fN+48+DCJI3vmYBZwMvuIwIxntQdeXQ9Te62N1SHfyNSlyeKOl08wmGhk70fpgdkc qUk/oTxFNw== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20231010205553 20230926192553 51912 nic.cz. 8zqVXVrsbdB05riRIDPkj9jbV67ZsSHWArxcEIwbhz7+v6epWvIwDCzBeKZbA0PmpEPmCh3lz45S 6Zu1Y1BEhA== ) ;; 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 b.ns.nic.cz for nic.cz/SOA
	Received 189 bytes from 194.0.13.1
	;; Response received from 194.0.13.1 (189 octets) ;; HEADER SECTION ;; id = 26618 ;; 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. 1696147671 ;serial 14400 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20231015080750 20231001063750 51912 nic.cz. HzFNLWTXGVi5Mz8X0jOCXgMuJyinTRCXvKPFY4l4O3lNZ2gYQ04+rrSsc764UE766yHoU2+eCrug 8AcE0MgAXw== ) ;; 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
	;; Response received from 194.0.12.1 (189 octets) ;; HEADER SECTION ;; id = 45454 ;; 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. 1696147671 ;serial 14400 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20231015080750 20231001063750 51912 nic.cz. HzFNLWTXGVi5Mz8X0jOCXgMuJyinTRCXvKPFY4l4O3lNZ2gYQ04+rrSsc764UE766yHoU2+eCrug 8AcE0MgAXw== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	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 = 3526 ;; 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 = 4 arcount = 13 ;; 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 20231010205553 20230926192553 51912 nic.cz. L30bDA1EVQcbqQeApteEGQtr1b9Jc4KNcAPwcdU9whCvwcZFbgw/+5YXDqNtebI5qU71OecnxrAh vZ3PkiYhQQ== ) ;; 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 20231010205553 20230926192553 51912 nic.cz. e0yMHFN8NF1L/X1mVT82FxHeI5NpEDq1bxQ+eQOK+B3GLNOvkYlV29QX3z+MCC01XCAXTKLjIrDZ 7NvyYlkdSQ== ) ;; 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 20231010205553 20230926192553 51912 nic.cz. RMXZZhTq0zNbhgKJg3BMvTItjbHQBwtEDOOCJV28k+KftRxfxXIrFQVfJK6gdTzoOsB15piQGWSg Y2CPHI972g== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20231010205553 20230926192553 51912 nic.cz. rRyobYajGnHBf2PjqxzYKH74qcze8cOKH07ERHC8G32M6ojCzDn5UnyVt2lgUuMipji1KXn7jgbf 92gx2mzFXA== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20231010205553 20230926192553 51912 nic.cz. nYLTEHAT3WPms4tNYzFWwH75m7PfQwaL3OWb4eOily6TG2/M0d+PQwokc4oHDPXckg+fsXB7F/v1 Oe2wrneptg== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20231010205553 20230926192553 51912 nic.cz. bvdbTgynHdW/+nKUvRFjrca4DsvWMZMDq+Rf+EQHUrem5c95hVXP9vUGCVJ7Yzd3IIqdPPbWaUoN oFeouwk8mg== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20231010205553 20230926192553 51912 nic.cz. tph8KUrSjB7fN+48+DCJI3vmYBZwMvuIwIxntQdeXQ9Te62N1SHfyNSlyeKOl08wmGhk70fpgdkc qUk/oTxFNw== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20231010205553 20230926192553 51912 nic.cz. 8zqVXVrsbdB05riRIDPkj9jbV67ZsSHWArxcEIwbhz7+v6epWvIwDCzBeKZbA0PmpEPmCh3lz45S 6Zu1Y1BEhA== ) ;; 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 20231010205553 20230926192553 51912 nic.cz. L30bDA1EVQcbqQeApteEGQtr1b9Jc4KNcAPwcdU9whCvwcZFbgw/+5YXDqNtebI5qU71OecnxrAh vZ3PkiYhQQ== )`
	RRSIG=51912 and DNSKEY=51912 verifies the A RRset

nic.cz

	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 = 33912 ;; 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 20231010205553 20230926192553 51912 nic.cz. L30bDA1EVQcbqQeApteEGQtr1b9Jc4KNcAPwcdU9whCvwcZFbgw/+5YXDqNtebI5qU71OecnxrAh vZ3PkiYhQQ== ) ;; 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 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 = 17267 ;; 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 20231010205553 20230926192553 51912 nic.cz. L30bDA1EVQcbqQeApteEGQtr1b9Jc4KNcAPwcdU9whCvwcZFbgw/+5YXDqNtebI5qU71OecnxrAh vZ3PkiYhQQ== ) ;; 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 20231010205553 20230926192553 51912 nic.cz. L30bDA1EVQcbqQeApteEGQtr1b9Jc4KNcAPwcdU9whCvwcZFbgw/+5YXDqNtebI5qU71OecnxrAh vZ3PkiYhQQ== )`
	RRSIG=51912 and DNSKEY=51912 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 = 43368 ;; 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 20231010205553 20230926192553 51912 nic.cz. L30bDA1EVQcbqQeApteEGQtr1b9Jc4KNcAPwcdU9whCvwcZFbgw/+5YXDqNtebI5qU71OecnxrAh vZ3PkiYhQQ== ) ;; 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
	;; Response received from 194.0.12.1 (153 octets) ;; HEADER SECTION ;; id = 18463 ;; 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 20231010205553 20230926192553 51912 nic.cz. L30bDA1EVQcbqQeApteEGQtr1b9Jc4KNcAPwcdU9whCvwcZFbgw/+5YXDqNtebI5qU71OecnxrAh vZ3PkiYhQQ== ) ;; 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 20231010205553 20230926192553 51912 nic.cz. L30bDA1EVQcbqQeApteEGQtr1b9Jc4KNcAPwcdU9whCvwcZFbgw/+5YXDqNtebI5qU71OecnxrAh vZ3PkiYhQQ== )`
	RRSIG=51912 and DNSKEY=51912 verifies the A RRset

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