DNSSEC Analyzer

Domain Name:

Time: 2023-03-23 19:58:32 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 f.root-servers.net for ./DNSKEY
	Received 1139 bytes from 192.5.5.241
	;; Response received from 192.5.5.241 (1139 octets) ;; HEADER SECTION ;; id = 31675 ;; 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: 1472 ;; option: ;; QUESTION SECTION (1 record) ;; . IN DNSKEY ;; ANSWER SECTION (4 records) . 172800 IN DNSKEY ( 256 3 8 AwEAAbF1LAxEQPtClEQno48k6u7JjCOfVfwdENOxQUrX0JbpN5DnKGMAKIfdiWa5oDeKQ3OoQ58y CC8vjtaaGFDgpJxoLwqzhBYHPGFgins5HIERcCQPGAJKWu/ku4XLh+Fu7UyBubDCelxKTbnj26Ew bochltRqGIE8hbwSXEzRNo4g+NXkaRMq2FFbaBtEE82yTmZUgFRYAFUvfGTPWblyZGtkepVuHyNb 0w/u24dpsz+uyCZZR04cHfRrWOKvqD3lDOwC4+sqd6f7F841R0N2tqSh/WDUZzWdvPBaBOz0FWFL b9porIeZ3Jm08tAMHa+3SGRXfK4RAmxVCmIQQypGabE= ) ; Key ID = 60955 . 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 AwEAAcVnO2jZFx4756Rb/yAhJnsl72eemsObU43nclmXwqdJlp+kC5WQjGYkqLT5xkaUCPhkr4NK LLrIBZXeSGazc6gx/yrrMtUpXcQvax6kfDJPTu974OmeEbtjyyP7ZG5tUfSwNWt/4EuxDNmZTESG 8jU0ZLjYIB11pK0gSXQbMVPyIyGtFGHMPx6UxWn6zUzpECWRFbqEvkA6Y13zeJ1jG2Rki/zs7a/o 13FTl/kI9013Eh6l6Kc2zxbc14GS8fpM0/xQIrZZyeiXj/2C4RcsPeqWuNj9m0qSQrbrCZtLHb20 U8x1uue4iwSX9y7LpwZd6vjYd1d6dgBa1Xxgc/TC+m8= ) ; Key ID = 951 . 172800 IN RRSIG ( DNSKEY 8 0 172800 20230412000000 20230322000000 20326 . XSxf/IWwVx/BM4ekFQBxNAPnhPs89l7Cr2M1OiNKNd4rC/kNmD/VOJ/06K69XTHE2SwlDAm+NiF9 CMXfRO1hB2KTpS70GiO9BXnHBlHcJF5ggV6rsaSRt924eGGEcsahkgoi/fgHCOtGIveKJPQ2xOKg RmNsix/jDSfdweyjH71AbE2lvcmPAJ3VhuFlx+mvzW8iak/unW4IySBYRVuFCdV3cVQKmXTqDpd2 ycCcmYM5xRb4YpCq5dsZBCaHVhuknii7dMV7I86TPCPFJoiiBLTqzMoc5ObhLZnkHDdTjiOgeIBJ Dw5X5w7M0wK36+5WDqm2JV6NqIc2XiiXDI1/7Q== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1472 ;; option:
	Found 3 DNSKEY records for .
	`. 172800 IN DNSKEY ( 256 3 8 AwEAAbF1LAxEQPtClEQno48k6u7JjCOfVfwdENOxQUrX0JbpN5DnKGMAKIfdiWa5oDeKQ3OoQ58y CC8vjtaaGFDgpJxoLwqzhBYHPGFgins5HIERcCQPGAJKWu/ku4XLh+Fu7UyBubDCelxKTbnj26Ew bochltRqGIE8hbwSXEzRNo4g+NXkaRMq2FFbaBtEE82yTmZUgFRYAFUvfGTPWblyZGtkepVuHyNb 0w/u24dpsz+uyCZZR04cHfRrWOKvqD3lDOwC4+sqd6f7F841R0N2tqSh/WDUZzWdvPBaBOz0FWFL b9porIeZ3Jm08tAMHa+3SGRXfK4RAmxVCmIQQypGabE= ) ; Key ID = 60955`
	`. 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 AwEAAcVnO2jZFx4756Rb/yAhJnsl72eemsObU43nclmXwqdJlp+kC5WQjGYkqLT5xkaUCPhkr4NK LLrIBZXeSGazc6gx/yrrMtUpXcQvax6kfDJPTu974OmeEbtjyyP7ZG5tUfSwNWt/4EuxDNmZTESG 8jU0ZLjYIB11pK0gSXQbMVPyIyGtFGHMPx6UxWn6zUzpECWRFbqEvkA6Y13zeJ1jG2Rki/zs7a/o 13FTl/kI9013Eh6l6Kc2zxbc14GS8fpM0/xQIrZZyeiXj/2C4RcsPeqWuNj9m0qSQrbrCZtLHb20 U8x1uue4iwSX9y7LpwZd6vjYd1d6dgBa1Xxgc/TC+m8= ) ; Key ID = 951`
	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 20230412000000 20230322000000 20326 . XSxf/IWwVx/BM4ekFQBxNAPnhPs89l7Cr2M1OiNKNd4rC/kNmD/VOJ/06K69XTHE2SwlDAm+NiF9 CMXfRO1hB2KTpS70GiO9BXnHBlHcJF5ggV6rsaSRt924eGGEcsahkgoi/fgHCOtGIveKJPQ2xOKg RmNsix/jDSfdweyjH71AbE2lvcmPAJ3VhuFlx+mvzW8iak/unW4IySBYRVuFCdV3cVQKmXTqDpd2 ycCcmYM5xRb4YpCq5dsZBCaHVhuknii7dMV7I86TPCPFJoiiBLTqzMoc5ObhLZnkHDdTjiOgeIBJ Dw5X5w7M0wK36+5WDqm2JV6NqIc2XiiXDI1/7Q== )`
	RRSIG=20326 and DNSKEY=20326/SEP verifies the DNSKEY RRset
	DNSKEY=60955 is now in the chain-of-trust
	DNSKEY=951 is now in the chain-of-trust
	Query to b.root-servers.net for nic.cz/A
	Received 613 bytes from 199.9.14.201
	;; Response received from 199.9.14.201 (613 octets) ;; HEADER SECTION ;; id = 8745 ;; 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) ;; 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 20230405170000 20230323160000 951 . Qn/wFexHvBYKAaiDPtLSlTj1iFrDRa50knArFlWd2ftcRn5EL+fu2hhKg/2tBNG5A18t/CCTSBW9 E2w2GdFLYbALVTLCyh28PikWJ/EELL+6GmQn9mlPMQ75rtX5vM0pRbP5tIEefNXR59oRJDToqDHK InV5h5uBzeoa5BvnjSeVzRMFTXp5uqy1zRLuZl7cBWugO67n8NJe/h8Ki67cT+1fthsxs5Sb5rML YbrZSiKYXi7pGwbdVQ7CbBxwAe230X1UH6/xIILtDFGm0EgsOXBXtQiaZo0ERL++Yz9GKfUYrZlm MiBtwWj5E7H4L7neaSprvfepAP7EQKHCL2M8dQ== ) ;; 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: 1232 ;; option:
	Query to h.root-servers.net for cz/DNSKEY
	Received 613 bytes from 198.97.190.53
	;; Response received from 198.97.190.53 (613 octets) ;; HEADER SECTION ;; id = 50044 ;; 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 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 20230405170000 20230323160000 951 . Qn/wFexHvBYKAaiDPtLSlTj1iFrDRa50knArFlWd2ftcRn5EL+fu2hhKg/2tBNG5A18t/CCTSBW9 E2w2GdFLYbALVTLCyh28PikWJ/EELL+6GmQn9mlPMQ75rtX5vM0pRbP5tIEefNXR59oRJDToqDHK InV5h5uBzeoa5BvnjSeVzRMFTXp5uqy1zRLuZl7cBWugO67n8NJe/h8Ki67cT+1fthsxs5Sb5rML YbrZSiKYXi7pGwbdVQ7CbBxwAe230X1UH6/xIILtDFGm0EgsOXBXtQiaZo0ERL++Yz9GKfUYrZlm MiBtwWj5E7H4L7neaSprvfepAP7EQKHCL2M8dQ== ) ;; 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 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Found child zone cz

	Checking DS between . and cz
	Query to c.root-servers.net for cz/DS
	Received 366 bytes from 192.33.4.12
	;; Response received from 192.33.4.12 (366 octets) ;; HEADER SECTION ;; id = 42465 ;; 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) ;; cz. IN DS ;; ANSWER SECTION (2 records) cz. 86400 IN DS ( 20237 13 2 cff0f3ecdbc529c1f0031ba1840bfb835853b9209ed1e508fff48451d7b778e2 ) cz. 86400 IN RRSIG ( DS 8 1 86400 20230405170000 20230323160000 951 . Qn/wFexHvBYKAaiDPtLSlTj1iFrDRa50knArFlWd2ftcRn5EL+fu2hhKg/2tBNG5A18t/CCTSBW9 E2w2GdFLYbALVTLCyh28PikWJ/EELL+6GmQn9mlPMQ75rtX5vM0pRbP5tIEefNXR59oRJDToqDHK InV5h5uBzeoa5BvnjSeVzRMFTXp5uqy1zRLuZl7cBWugO67n8NJe/h8Ki67cT+1fthsxs5Sb5rML YbrZSiKYXi7pGwbdVQ7CbBxwAe230X1UH6/xIILtDFGm0EgsOXBXtQiaZo0ERL++Yz9GKfUYrZlm MiBtwWj5E7H4L7neaSprvfepAP7EQKHCL2M8dQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; 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 20230405170000 20230323160000 951 . Qn/wFexHvBYKAaiDPtLSlTj1iFrDRa50knArFlWd2ftcRn5EL+fu2hhKg/2tBNG5A18t/CCTSBW9 E2w2GdFLYbALVTLCyh28PikWJ/EELL+6GmQn9mlPMQ75rtX5vM0pRbP5tIEefNXR59oRJDToqDHK InV5h5uBzeoa5BvnjSeVzRMFTXp5uqy1zRLuZl7cBWugO67n8NJe/h8Ki67cT+1fthsxs5Sb5rML YbrZSiKYXi7pGwbdVQ7CbBxwAe230X1UH6/xIILtDFGm0EgsOXBXtQiaZo0ERL++Yz9GKfUYrZlm MiBtwWj5E7H4L7neaSprvfepAP7EQKHCL2M8dQ== )`
	RRSIG=951 and DNSKEY=951 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 = 33675 ;; 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 BsySbmsgYBdD/rH8y6AifCacqxBUKWcA4y+aALcgWVf5F88XZdFVcB7j4WcavzdLuomuCeZoS98/ bMJiitULCg== ) ; Key ID = 28519 cz. 3600 IN DNSKEY ( 257 3 13 nqzH7xP1QU5UOVy/VvxFSlrB/XgX9JDJzj51PzIj35TXjZTyalTlAT/f7PAfaSD5mEG1N8Vk9NmI 2nxgQqhzDQ== ) ; Key ID = 20237 cz. 3600 IN RRSIG ( DNSKEY 13 1 3600 20230401002134 20230317225134 20237 cz. 2L0RsjTKWtLOA5NZagm709JZMFgWt9bz+W97JycfNE6pNSFiCAFxbJvoueVpSaGDRIX3mngKTyLV fkIWC/qY7A== ) ;; 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 BsySbmsgYBdD/rH8y6AifCacqxBUKWcA4y+aALcgWVf5F88XZdFVcB7j4WcavzdLuomuCeZoS98/ bMJiitULCg== ) ; Key ID = 28519`
	`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 20230401002134 20230317225134 20237 cz. 2L0RsjTKWtLOA5NZagm709JZMFgWt9bz+W97JycfNE6pNSFiCAFxbJvoueVpSaGDRIX3mngKTyLV fkIWC/qY7A== )`
	RRSIG=20237 and DNSKEY=20237/SEP verifies the DNSKEY RRset
	DNSKEY=28519 is now in the chain-of-trust
	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 = 28017 ;; 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 20230406115553 20230323102553 21925 nic.cz. P70dlA8txmCskmuXFnUnSAyA9rc8nessOOiyFvnVhd8mnxDwZehbXC24b6MbOAkNWqO2dl/Y6KbP YZZsqKEo7Q== ) ;; 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
	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 = 8847 ;; 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 jfWPjp2NroRcwXNMW++oWRG2BjO2wuvOpOuz+qNZW6HfbOMu9NDftWqPa4Zrc4CpYiU2spkmLTe3 W5UlwbM6jw== ) ; Key ID = 21925 nic.cz. 1800 IN DNSKEY ( 257 3 13 41HF24l2JgkEzK8Pv/h8iiHCjzwHea/Y+4d3v1mHjFzimRiQpGYB4rodlOiqtuTJEwL94uS+/sAk 749TX7NXoA== ) ; Key ID = 61066 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20230406132553 20230323115553 61066 nic.cz. FAh2LaL74XN8Q0tcx67QkGQtq+oTysZ+OwFwRRAxLHOZd9zsoQ8c4b/c6/WU7avpzrm1+QIrG9RD SXa8+ZBPtQ== ) ;; 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 a.ns.nic.cz for nic.cz/NS
	Received 932 bytes from 194.0.12.1
	;; Response received from 194.0.12.1 (932 octets) ;; HEADER SECTION ;; id = 38888 ;; 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 20230406115553 20230323102553 21925 nic.cz. gcqG5D/JmMy2p3PugUBpu0WArJaHoHD2PJoSBeYZF1ew8MHKtBncT6vpY1Hore2QqyzrSippX6zc JPrl02aygw== ) ;; 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 20230406115553 20230323102553 21925 nic.cz. vKgRMa/UzwdjR6kY4qR1G+MtS27EV4QKa2f7lufVb04c9Wz2ITroYfq8chj0AoodnUGPiTu9LsVz PLcrRSif2Q== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. bhbZjEXAaEO44z/jVHR2XaIyGnKNkl+nAFEcsU2aETyl1dS50BMNocm311NeMB25zFiPvHAMsWPB ALlzeFDS4Q== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20230406115553 20230323102553 21925 nic.cz. sE1IohDVRuXYvCoUCUPcr1bBk9yyb4gswO27QzB/J67LmMMtfE2sJuLfPNiKrFiTLSlSTsqizqBC whtXcs6ZfA== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. kYCiEajm9b3SRGdwcSasNQkkBjbtokGWaWBaVwi2FFtu9c2rMz+XNYeyqXx14b7hg1ZWXYnao0ca Ut7sodJRoQ== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20230406115553 20230323102553 21925 nic.cz. qPyy3MDgebwBpG848z+pNbfs9eCrcOlgrQTh6pLFC+n6ad0s+XL3TPcjNXZkKNnHbpArLzRwSWHw xz7y9m8ZgA== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. noTVsUsg8E3TfBMcF1IgHFHBaTQoN0bng0UalHh5LtzpmPcmm03yEcwJ3DyyI43S5fdzUTftDR/n 5e0VVZrUuQ== ) ;; 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 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 = 40756 ;; 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 ( 61066 13 2 33ea546db0a7486d91b4f3793f7d1f576434343908c2041eb5d9a271b51f885d ) nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20230405132018 20230322115018 28519 cz. 764dqPbq9c6QwOUwdVmsCyU9dsTa3AHkg4Qg3lX/SglhHH2ubxBsLiqqeGYwpfOBOnFHeh6rvk2j dndEY3KSOw== ) ;; 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=61066/SHA-256 has algorithm ECDSAP256SHA256
	Found 1 RRSIGs over DS RRset
	`nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20230405132018 20230322115018 28519 cz. 764dqPbq9c6QwOUwdVmsCyU9dsTa3AHkg4Qg3lX/SglhHH2ubxBsLiqqeGYwpfOBOnFHeh6rvk2j dndEY3KSOw== )`
	RRSIG=28519 and DNSKEY=28519 verifies the DS RRset
	DS=61066/SHA-256 is now in the chain-of-trust
	`nic.cz. 3600 IN DS ( 61066 13 2 33ea546db0a7486d91b4f3793f7d1f576434343908c2041eb5d9a271b51f885d )`
	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 = 56717 ;; 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 jfWPjp2NroRcwXNMW++oWRG2BjO2wuvOpOuz+qNZW6HfbOMu9NDftWqPa4Zrc4CpYiU2spkmLTe3 W5UlwbM6jw== ) ; Key ID = 21925 nic.cz. 1800 IN DNSKEY ( 257 3 13 41HF24l2JgkEzK8Pv/h8iiHCjzwHea/Y+4d3v1mHjFzimRiQpGYB4rodlOiqtuTJEwL94uS+/sAk 749TX7NXoA== ) ; Key ID = 61066 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20230406132553 20230323115553 61066 nic.cz. FAh2LaL74XN8Q0tcx67QkGQtq+oTysZ+OwFwRRAxLHOZd9zsoQ8c4b/c6/WU7avpzrm1+QIrG9RD SXa8+ZBPtQ== ) ;; 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 jfWPjp2NroRcwXNMW++oWRG2BjO2wuvOpOuz+qNZW6HfbOMu9NDftWqPa4Zrc4CpYiU2spkmLTe3 W5UlwbM6jw== ) ; Key ID = 21925`
	`nic.cz. 1800 IN DNSKEY ( 257 3 13 41HF24l2JgkEzK8Pv/h8iiHCjzwHea/Y+4d3v1mHjFzimRiQpGYB4rodlOiqtuTJEwL94uS+/sAk 749TX7NXoA== ) ; Key ID = 61066`
	DNSKEY=61066/SEP is now in the chain-of-trust
	DS=61066/SHA-256 verifies DNSKEY=61066/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20230406132553 20230323115553 61066 nic.cz. FAh2LaL74XN8Q0tcx67QkGQtq+oTysZ+OwFwRRAxLHOZd9zsoQ8c4b/c6/WU7avpzrm1+QIrG9RD SXa8+ZBPtQ== )`
	RRSIG=61066 and DNSKEY=61066/SEP verifies the DNSKEY RRset
	DNSKEY=21925 is now in the chain-of-trust
	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 = 53470 ;; 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 20230406115553 20230323102553 21925 nic.cz. P70dlA8txmCskmuXFnUnSAyA9rc8nessOOiyFvnVhd8mnxDwZehbXC24b6MbOAkNWqO2dl/Y6KbP YZZsqKEo7Q== ) ;; 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 b.ns.nic.cz for nic.cz/SOA
	Received 1087 bytes from 194.0.13.1
	;; Response received from 194.0.13.1 (1087 octets) ;; HEADER SECTION ;; id = 28199 ;; 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 SOA ;; ANSWER SECTION (2 records) nic.cz. 1800 IN SOA ( a.ns.nic.cz. hostmaster.nic.cz. 1679577953 ;serial 14400 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20230406132553 20230323115553 21925 nic.cz. nj3sVp/70TdAuE/hE7Om9E02LTdpy2hOpAT//mq0HCR05uh2gNYpL3g77lDaNPQKuos3scaKu7PP V69hyECZNg== ) ;; 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 20230406115553 20230323102553 21925 nic.cz. gcqG5D/JmMy2p3PugUBpu0WArJaHoHD2PJoSBeYZF1ew8MHKtBncT6vpY1Hore2QqyzrSippX6zc JPrl02aygw== ) ;; 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 20230406115553 20230323102553 21925 nic.cz. vKgRMa/UzwdjR6kY4qR1G+MtS27EV4QKa2f7lufVb04c9Wz2ITroYfq8chj0AoodnUGPiTu9LsVz PLcrRSif2Q== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. bhbZjEXAaEO44z/jVHR2XaIyGnKNkl+nAFEcsU2aETyl1dS50BMNocm311NeMB25zFiPvHAMsWPB ALlzeFDS4Q== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20230406115553 20230323102553 21925 nic.cz. sE1IohDVRuXYvCoUCUPcr1bBk9yyb4gswO27QzB/J67LmMMtfE2sJuLfPNiKrFiTLSlSTsqizqBC whtXcs6ZfA== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. kYCiEajm9b3SRGdwcSasNQkkBjbtokGWaWBaVwi2FFtu9c2rMz+XNYeyqXx14b7hg1ZWXYnao0ca Ut7sodJRoQ== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20230406115553 20230323102553 21925 nic.cz. qPyy3MDgebwBpG848z+pNbfs9eCrcOlgrQTh6pLFC+n6ad0s+XL3TPcjNXZkKNnHbpArLzRwSWHw xz7y9m8ZgA== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. noTVsUsg8E3TfBMcF1IgHFHBaTQoN0bng0UalHh5LtzpmPcmm03yEcwJ3DyyI43S5fdzUTftDR/n 5e0VVZrUuQ== ) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	Query to d.ns.nic.cz for nic.cz/SOA
	Received 1087 bytes from 193.29.206.1
	;; Response received from 193.29.206.1 (1087 octets) ;; HEADER SECTION ;; id = 14229 ;; 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 SOA ;; ANSWER SECTION (2 records) nic.cz. 1800 IN SOA ( a.ns.nic.cz. hostmaster.nic.cz. 1679577953 ;serial 14400 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20230406132553 20230323115553 21925 nic.cz. nj3sVp/70TdAuE/hE7Om9E02LTdpy2hOpAT//mq0HCR05uh2gNYpL3g77lDaNPQKuos3scaKu7PP V69hyECZNg== ) ;; 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 20230406115553 20230323102553 21925 nic.cz. gcqG5D/JmMy2p3PugUBpu0WArJaHoHD2PJoSBeYZF1ew8MHKtBncT6vpY1Hore2QqyzrSippX6zc JPrl02aygw== ) ;; 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 20230406115553 20230323102553 21925 nic.cz. vKgRMa/UzwdjR6kY4qR1G+MtS27EV4QKa2f7lufVb04c9Wz2ITroYfq8chj0AoodnUGPiTu9LsVz PLcrRSif2Q== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. bhbZjEXAaEO44z/jVHR2XaIyGnKNkl+nAFEcsU2aETyl1dS50BMNocm311NeMB25zFiPvHAMsWPB ALlzeFDS4Q== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20230406115553 20230323102553 21925 nic.cz. sE1IohDVRuXYvCoUCUPcr1bBk9yyb4gswO27QzB/J67LmMMtfE2sJuLfPNiKrFiTLSlSTsqizqBC whtXcs6ZfA== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. kYCiEajm9b3SRGdwcSasNQkkBjbtokGWaWBaVwi2FFtu9c2rMz+XNYeyqXx14b7hg1ZWXYnao0ca Ut7sodJRoQ== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20230406115553 20230323102553 21925 nic.cz. qPyy3MDgebwBpG848z+pNbfs9eCrcOlgrQTh6pLFC+n6ad0s+XL3TPcjNXZkKNnHbpArLzRwSWHw xz7y9m8ZgA== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. noTVsUsg8E3TfBMcF1IgHFHBaTQoN0bng0UalHh5LtzpmPcmm03yEcwJ3DyyI43S5fdzUTftDR/n 5e0VVZrUuQ== ) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; option:
	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 = 26509 ;; 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 20230406115553 20230323102553 21925 nic.cz. P70dlA8txmCskmuXFnUnSAyA9rc8nessOOiyFvnVhd8mnxDwZehbXC24b6MbOAkNWqO2dl/Y6KbP YZZsqKEo7Q== ) ;; 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 20230406115553 20230323102553 21925 nic.cz. P70dlA8txmCskmuXFnUnSAyA9rc8nessOOiyFvnVhd8mnxDwZehbXC24b6MbOAkNWqO2dl/Y6KbP YZZsqKEo7Q== )`
	RRSIG=21925 and DNSKEY=21925 verifies the A RRset

nic.cz

	Query to b.ns.nic.cz for nic.cz/A
	Received 1056 bytes from 194.0.13.1
	;; Response received from 194.0.13.1 (1056 octets) ;; HEADER SECTION ;; id = 25055 ;; 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 20230406115553 20230323102553 21925 nic.cz. P70dlA8txmCskmuXFnUnSAyA9rc8nessOOiyFvnVhd8mnxDwZehbXC24b6MbOAkNWqO2dl/Y6KbP YZZsqKEo7Q== ) ;; AUTHORITY 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 20230406115553 20230323102553 21925 nic.cz. gcqG5D/JmMy2p3PugUBpu0WArJaHoHD2PJoSBeYZF1ew8MHKtBncT6vpY1Hore2QqyzrSippX6zc JPrl02aygw== ) ;; 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 20230406115553 20230323102553 21925 nic.cz. vKgRMa/UzwdjR6kY4qR1G+MtS27EV4QKa2f7lufVb04c9Wz2ITroYfq8chj0AoodnUGPiTu9LsVz PLcrRSif2Q== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. bhbZjEXAaEO44z/jVHR2XaIyGnKNkl+nAFEcsU2aETyl1dS50BMNocm311NeMB25zFiPvHAMsWPB ALlzeFDS4Q== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20230406115553 20230323102553 21925 nic.cz. sE1IohDVRuXYvCoUCUPcr1bBk9yyb4gswO27QzB/J67LmMMtfE2sJuLfPNiKrFiTLSlSTsqizqBC whtXcs6ZfA== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. kYCiEajm9b3SRGdwcSasNQkkBjbtokGWaWBaVwi2FFtu9c2rMz+XNYeyqXx14b7hg1ZWXYnao0ca Ut7sodJRoQ== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20230406115553 20230323102553 21925 nic.cz. qPyy3MDgebwBpG848z+pNbfs9eCrcOlgrQTh6pLFC+n6ad0s+XL3TPcjNXZkKNnHbpArLzRwSWHw xz7y9m8ZgA== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. noTVsUsg8E3TfBMcF1IgHFHBaTQoN0bng0UalHh5LtzpmPcmm03yEcwJ3DyyI43S5fdzUTftDR/n 5e0VVZrUuQ== ) ;; 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 1056 bytes from 194.0.13.1
	;; Response received from 194.0.13.1 (1056 octets) ;; HEADER SECTION ;; id = 60398 ;; 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 20230406115553 20230323102553 21925 nic.cz. P70dlA8txmCskmuXFnUnSAyA9rc8nessOOiyFvnVhd8mnxDwZehbXC24b6MbOAkNWqO2dl/Y6KbP YZZsqKEo7Q== ) ;; 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 20230406115553 20230323102553 21925 nic.cz. gcqG5D/JmMy2p3PugUBpu0WArJaHoHD2PJoSBeYZF1ew8MHKtBncT6vpY1Hore2QqyzrSippX6zc JPrl02aygw== ) ;; 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 20230406115553 20230323102553 21925 nic.cz. vKgRMa/UzwdjR6kY4qR1G+MtS27EV4QKa2f7lufVb04c9Wz2ITroYfq8chj0AoodnUGPiTu9LsVz PLcrRSif2Q== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. bhbZjEXAaEO44z/jVHR2XaIyGnKNkl+nAFEcsU2aETyl1dS50BMNocm311NeMB25zFiPvHAMsWPB ALlzeFDS4Q== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20230406115553 20230323102553 21925 nic.cz. sE1IohDVRuXYvCoUCUPcr1bBk9yyb4gswO27QzB/J67LmMMtfE2sJuLfPNiKrFiTLSlSTsqizqBC whtXcs6ZfA== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. kYCiEajm9b3SRGdwcSasNQkkBjbtokGWaWBaVwi2FFtu9c2rMz+XNYeyqXx14b7hg1ZWXYnao0ca Ut7sodJRoQ== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20230406115553 20230323102553 21925 nic.cz. qPyy3MDgebwBpG848z+pNbfs9eCrcOlgrQTh6pLFC+n6ad0s+XL3TPcjNXZkKNnHbpArLzRwSWHw xz7y9m8ZgA== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. noTVsUsg8E3TfBMcF1IgHFHBaTQoN0bng0UalHh5LtzpmPcmm03yEcwJ3DyyI43S5fdzUTftDR/n 5e0VVZrUuQ== ) ;; 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 20230406115553 20230323102553 21925 nic.cz. P70dlA8txmCskmuXFnUnSAyA9rc8nessOOiyFvnVhd8mnxDwZehbXC24b6MbOAkNWqO2dl/Y6KbP YZZsqKEo7Q== )`
	RRSIG=21925 and DNSKEY=21925 verifies the A RRset

nic.cz

	Query to d.ns.nic.cz for nic.cz/A
	Received 1056 bytes from 193.29.206.1
	;; Response received from 193.29.206.1 (1056 octets) ;; HEADER SECTION ;; id = 54525 ;; 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 20230406115553 20230323102553 21925 nic.cz. P70dlA8txmCskmuXFnUnSAyA9rc8nessOOiyFvnVhd8mnxDwZehbXC24b6MbOAkNWqO2dl/Y6KbP YZZsqKEo7Q== ) ;; 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 20230406115553 20230323102553 21925 nic.cz. gcqG5D/JmMy2p3PugUBpu0WArJaHoHD2PJoSBeYZF1ew8MHKtBncT6vpY1Hore2QqyzrSippX6zc JPrl02aygw== ) ;; 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 20230406115553 20230323102553 21925 nic.cz. vKgRMa/UzwdjR6kY4qR1G+MtS27EV4QKa2f7lufVb04c9Wz2ITroYfq8chj0AoodnUGPiTu9LsVz PLcrRSif2Q== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. bhbZjEXAaEO44z/jVHR2XaIyGnKNkl+nAFEcsU2aETyl1dS50BMNocm311NeMB25zFiPvHAMsWPB ALlzeFDS4Q== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20230406115553 20230323102553 21925 nic.cz. sE1IohDVRuXYvCoUCUPcr1bBk9yyb4gswO27QzB/J67LmMMtfE2sJuLfPNiKrFiTLSlSTsqizqBC whtXcs6ZfA== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. kYCiEajm9b3SRGdwcSasNQkkBjbtokGWaWBaVwi2FFtu9c2rMz+XNYeyqXx14b7hg1ZWXYnao0ca Ut7sodJRoQ== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20230406115553 20230323102553 21925 nic.cz. qPyy3MDgebwBpG848z+pNbfs9eCrcOlgrQTh6pLFC+n6ad0s+XL3TPcjNXZkKNnHbpArLzRwSWHw xz7y9m8ZgA== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. noTVsUsg8E3TfBMcF1IgHFHBaTQoN0bng0UalHh5LtzpmPcmm03yEcwJ3DyyI43S5fdzUTftDR/n 5e0VVZrUuQ== ) ;; 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 1056 bytes from 193.29.206.1
	;; Response received from 193.29.206.1 (1056 octets) ;; HEADER SECTION ;; id = 52003 ;; 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 20230406115553 20230323102553 21925 nic.cz. P70dlA8txmCskmuXFnUnSAyA9rc8nessOOiyFvnVhd8mnxDwZehbXC24b6MbOAkNWqO2dl/Y6KbP YZZsqKEo7Q== ) ;; AUTHORITY SECTION (4 records) nic.cz. 1800 IN NS d.ns.nic.cz. nic.cz. 1800 IN NS a.ns.nic.cz. nic.cz. 1800 IN NS b.ns.nic.cz. nic.cz. 1800 IN RRSIG ( NS 13 2 1800 20230406115553 20230323102553 21925 nic.cz. gcqG5D/JmMy2p3PugUBpu0WArJaHoHD2PJoSBeYZF1ew8MHKtBncT6vpY1Hore2QqyzrSippX6zc JPrl02aygw== ) ;; 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 20230406115553 20230323102553 21925 nic.cz. vKgRMa/UzwdjR6kY4qR1G+MtS27EV4QKa2f7lufVb04c9Wz2ITroYfq8chj0AoodnUGPiTu9LsVz PLcrRSif2Q== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. bhbZjEXAaEO44z/jVHR2XaIyGnKNkl+nAFEcsU2aETyl1dS50BMNocm311NeMB25zFiPvHAMsWPB ALlzeFDS4Q== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20230406115553 20230323102553 21925 nic.cz. sE1IohDVRuXYvCoUCUPcr1bBk9yyb4gswO27QzB/J67LmMMtfE2sJuLfPNiKrFiTLSlSTsqizqBC whtXcs6ZfA== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. kYCiEajm9b3SRGdwcSasNQkkBjbtokGWaWBaVwi2FFtu9c2rMz+XNYeyqXx14b7hg1ZWXYnao0ca Ut7sodJRoQ== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20230406115553 20230323102553 21925 nic.cz. qPyy3MDgebwBpG848z+pNbfs9eCrcOlgrQTh6pLFC+n6ad0s+XL3TPcjNXZkKNnHbpArLzRwSWHw xz7y9m8ZgA== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20230406115553 20230323102553 21925 nic.cz. noTVsUsg8E3TfBMcF1IgHFHBaTQoN0bng0UalHh5LtzpmPcmm03yEcwJ3DyyI43S5fdzUTftDR/n 5e0VVZrUuQ== ) ;; 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 20230406115553 20230323102553 21925 nic.cz. P70dlA8txmCskmuXFnUnSAyA9rc8nessOOiyFvnVhd8mnxDwZehbXC24b6MbOAkNWqO2dl/Y6KbP YZZsqKEo7Q== )`
	RRSIG=21925 and DNSKEY=21925 verifies the A RRset

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