DNSSEC Analyzer

Domain Name:

Time: 2021-07-31 14:24:00 UTC, NTP stratum 16

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 g.root-servers.net for ./DNSKEY
	Received 864 bytes from 192.112.36.4
	;; Response received from 192.112.36.4 (864 octets) ;; HEADER SECTION ;; id = 16916 ;; 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) ;; . 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 AwEAAbDEyqdwu2fqAwinPCFwALUCWfYYaLrNhnOrMxDorLBYMipEE1btlK1XnigTRMeb0YQ8/LCo pb3CN73hYDhCHFsNk+GtukBB+gWLcg+2FZXbhLXIheQm8x2VfOHy2yYQG+18wjx3HY9Mj/ZEhXbZ NrDMvpFKKVihWXa0/cHNg4ZcIHD9KkMlKzK+my1K/vz8fq5cFCFOu7wgM+kKbOikdcRBm7Uf/wRX ZItFg2uhUijUb56gEN8uCUgmuEw6wQ5ZBuR7UT/FLyyAUeAH87oxF4im2DXK6J+JA7IAs2UHJ16u TqvdserUU8NIosislaXIZCvz+NTDb3SJcxs6bvCikeU= ) ; Key ID = 26838 . 172800 IN RRSIG ( DNSKEY 8 0 172800 20210821000000 20210731000000 20326 . MQCiL1+LRbTdEm3hyrUQOjMurN4QNmB7Up8ahSMS3vC+Waa7ywqKnClMNiZqPJKYuAn3wHZM0kj5 pTF/wASaLJ9duxmcL6Wyi7mugRZE1Pv3RDvp6o4RbroZND9HVnImDxg/GmaJbRxtPuA/dGSp/Iq7 AObJrtgNM81p19Z50Zn89POIr50/7SpuiRZ7xFYhfwIug9pgrHHdNQpQN7UVUJVXMDgtH/IT8ACg vGfoVLXCciPIpKJhwYZXq9nOGBgVxV7/h7aIGkrOryfm2ChvIei3MQANyjiq1QfckaXHpg+iHa4J 6kduZoTR5Pe+E0VFpf8q63kYBaJTshOVVMm3TQ== ) ;; AUTHORITY SECTION (0 records) ;; ADDITIONAL SECTION (1 record) ;; EDNS version 0 ;; flags: 8000 ;; rcode: NOERROR ;; size: 1232 ;; 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 AwEAAbDEyqdwu2fqAwinPCFwALUCWfYYaLrNhnOrMxDorLBYMipEE1btlK1XnigTRMeb0YQ8/LCo pb3CN73hYDhCHFsNk+GtukBB+gWLcg+2FZXbhLXIheQm8x2VfOHy2yYQG+18wjx3HY9Mj/ZEhXbZ NrDMvpFKKVihWXa0/cHNg4ZcIHD9KkMlKzK+my1K/vz8fq5cFCFOu7wgM+kKbOikdcRBm7Uf/wRX ZItFg2uhUijUb56gEN8uCUgmuEw6wQ5ZBuR7UT/FLyyAUeAH87oxF4im2DXK6J+JA7IAs2UHJ16u TqvdserUU8NIosislaXIZCvz+NTDb3SJcxs6bvCikeU= ) ; Key ID = 26838`
	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 20210821000000 20210731000000 20326 . MQCiL1+LRbTdEm3hyrUQOjMurN4QNmB7Up8ahSMS3vC+Waa7ywqKnClMNiZqPJKYuAn3wHZM0kj5 pTF/wASaLJ9duxmcL6Wyi7mugRZE1Pv3RDvp6o4RbroZND9HVnImDxg/GmaJbRxtPuA/dGSp/Iq7 AObJrtgNM81p19Z50Zn89POIr50/7SpuiRZ7xFYhfwIug9pgrHHdNQpQN7UVUJVXMDgtH/IT8ACg vGfoVLXCciPIpKJhwYZXq9nOGBgVxV7/h7aIGkrOryfm2ChvIei3MQANyjiq1QfckaXHpg+iHa4J 6kduZoTR5Pe+E0VFpf8q63kYBaJTshOVVMm3TQ== )`
	RRSIG=20326 and DNSKEY=20326/SEP verifies the DNSKEY RRset
	DNSKEY=26838 is now in the chain-of-trust
	Query to k.root-servers.net for nic.cz/A
	Received 613 bytes from 193.0.14.129
	;; Response received from 193.0.14.129 (613 octets) ;; HEADER SECTION ;; id = 39823 ;; 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 20210813050000 20210731040000 26838 . WdT3zAy2eEz5RdQVh0pyT6fNEIs+KwrxAadd78+OBpHgfNo+zW2zPx7JneqDMKu/rMuLELmCNaJW 5IHbdz/0eOfPJGVl9lyx05aSw+Nc9uuTD4wu1MldqOW6vJ9cf6vCoMz44iVeFupi/Ud+P2VVBMwV Jo87CfIBIqojAhXSHf9yvseY6dp49KIX5uXeoSvU7m8+QoxoXmJgM3uy1e68UMGmNmOyycmVgwPH hdRkiT8/ck9PE9dSBgLu0CQ7EJe9TyXh02bsFbCOUHwL96/SAUlwcunaXFWuavutZe+0HOp8liVI PHcXXzbUrAJ130321NSZB68/zRfCOFEyWsXBrQ== ) ;; 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 d.root-servers.net for cz/DNSKEY
	Received 613 bytes from 199.7.91.13
	;; Response received from 199.7.91.13 (613 octets) ;; HEADER SECTION ;; id = 36481 ;; 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: 1450 ;; 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 20210813050000 20210731040000 26838 . WdT3zAy2eEz5RdQVh0pyT6fNEIs+KwrxAadd78+OBpHgfNo+zW2zPx7JneqDMKu/rMuLELmCNaJW 5IHbdz/0eOfPJGVl9lyx05aSw+Nc9uuTD4wu1MldqOW6vJ9cf6vCoMz44iVeFupi/Ud+P2VVBMwV Jo87CfIBIqojAhXSHf9yvseY6dp49KIX5uXeoSvU7m8+QoxoXmJgM3uy1e68UMGmNmOyycmVgwPH hdRkiT8/ck9PE9dSBgLu0CQ7EJe9TyXh02bsFbCOUHwL96/SAUlwcunaXFWuavutZe+0HOp8liVI PHcXXzbUrAJ130321NSZB68/zRfCOFEyWsXBrQ== ) ;; 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: 1450 ;; option:
	Found child zone cz

	Checking DS between . and cz
	Query to i.root-servers.net for cz/DS
	Received 366 bytes from 192.36.148.17
	;; Response received from 192.36.148.17 (366 octets) ;; HEADER SECTION ;; id = 15282 ;; 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 20210813050000 20210731040000 26838 . WdT3zAy2eEz5RdQVh0pyT6fNEIs+KwrxAadd78+OBpHgfNo+zW2zPx7JneqDMKu/rMuLELmCNaJW 5IHbdz/0eOfPJGVl9lyx05aSw+Nc9uuTD4wu1MldqOW6vJ9cf6vCoMz44iVeFupi/Ud+P2VVBMwV Jo87CfIBIqojAhXSHf9yvseY6dp49KIX5uXeoSvU7m8+QoxoXmJgM3uy1e68UMGmNmOyycmVgwPH hdRkiT8/ck9PE9dSBgLu0CQ7EJe9TyXh02bsFbCOUHwL96/SAUlwcunaXFWuavutZe+0HOp8liVI PHcXXzbUrAJ130321NSZB68/zRfCOFEyWsXBrQ== ) ;; 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 20210813050000 20210731040000 26838 . WdT3zAy2eEz5RdQVh0pyT6fNEIs+KwrxAadd78+OBpHgfNo+zW2zPx7JneqDMKu/rMuLELmCNaJW 5IHbdz/0eOfPJGVl9lyx05aSw+Nc9uuTD4wu1MldqOW6vJ9cf6vCoMz44iVeFupi/Ud+P2VVBMwV Jo87CfIBIqojAhXSHf9yvseY6dp49KIX5uXeoSvU7m8+QoxoXmJgM3uy1e68UMGmNmOyycmVgwPH hdRkiT8/ck9PE9dSBgLu0CQ7EJe9TyXh02bsFbCOUHwL96/SAUlwcunaXFWuavutZe+0HOp8liVI PHcXXzbUrAJ130321NSZB68/zRfCOFEyWsXBrQ== )`
	RRSIG=26838 and DNSKEY=26838 verifies the DS RRset
	DS=20237/SHA-256 is now in the chain-of-trust
	`cz. 86400 IN DS ( 20237 13 2 cff0f3ecdbc529c1f0031ba1840bfb835853b9209ed1e508fff48451d7b778e2 )`
	Query to d.ns.nic.cz for cz/DNSKEY
	Received 289 bytes from 193.29.206.1
	;; Response received from 193.29.206.1 (289 octets) ;; HEADER SECTION ;; id = 27877 ;; 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 F75E5ATgIcFeTwfLA90N1NjrS98hW31h/tRFWYsm2DugSnrG5euEphgVXzjvqE5X73DfVBO7gdWt XOWSwAPKSw== ) ; Key ID = 9915 cz. 3600 IN DNSKEY ( 257 3 13 nqzH7xP1QU5UOVy/VvxFSlrB/XgX9JDJzj51PzIj35TXjZTyalTlAT/f7PAfaSD5mEG1N8Vk9NmI 2nxgQqhzDQ== ) ; Key ID = 20237 cz. 3600 IN RRSIG ( DNSKEY 13 1 3600 20210813002134 20210729225134 20237 cz. FY1TWI6x6TZSa2FHeN6gk5ZQ65c1YkTaNFsexfHXDAvSvxyA+RvdJbJuyinKgA30QqhKwN/cdB8k +AUW59+XNg== ) ;; 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 F75E5ATgIcFeTwfLA90N1NjrS98hW31h/tRFWYsm2DugSnrG5euEphgVXzjvqE5X73DfVBO7gdWt XOWSwAPKSw== ) ; Key ID = 9915`
	`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 20210813002134 20210729225134 20237 cz. FY1TWI6x6TZSa2FHeN6gk5ZQ65c1YkTaNFsexfHXDAvSvxyA+RvdJbJuyinKgA30QqhKwN/cdB8k +AUW59+XNg== )`
	RRSIG=20237 and DNSKEY=20237/SEP verifies the DNSKEY RRset
	DNSKEY=9915 is now in the chain-of-trust
	Query to d.ns.nic.cz for nic.cz/A
	Received 153 bytes from 193.29.206.1
	;; Response received from 193.29.206.1 (153 octets) ;; HEADER SECTION ;; id = 63462 ;; 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 20210812082547 20210729065547 44810 nic.cz. NoD4yMM7GKl+99/B/3aLYcMmVDhl7TbGc4PtkIeX+Qbq3BbhCjC6NCuoz1nb181Td8rVLNr90YLe mjhwEuoHHA== ) ;; 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
	Query to c.ns.nic.cz for nic.cz/DNSKEY
	Received 297 bytes from 194.0.14.1
	;; Response received from 194.0.14.1 (297 octets) ;; HEADER SECTION ;; id = 31310 ;; 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 dz/NfEZutf3JEcALdzQGH811tR0xPBvjQMLTnPvkXJvofQYXNAJ/nGGTKhJb9qkc85xLcN6bCj8m 24fwG+UBTQ== ) ; Key ID = 44810 nic.cz. 1800 IN DNSKEY ( 257 3 13 iJmXgOti+rG2OZEu3lshYDtJqM0UOLCNC+yhOks6LTZB+CjVHiEHmcnYfy9APhbqriRCmT2xjpaF x4CdkYdS4w== ) ; Key ID = 63586 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20210813135913 20210730122913 63586 nic.cz. FDO+nbN7rP/xbknMu7bD7VlSgvUQfOBdQchK6OliF/f717EMQCxnPXDJz9hKrz+oZhHtayH6rtGO ezllzN7x6A== ) ;; 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 = 19386 ;; 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 20210812082547 20210729065547 44810 nic.cz. b3PYgPQw+BYyQMmIbWUrBgcNH02t0dtPvcQpvVWBLaTre/SMI8G/40viZ+EbKvQdl7I9lrjPrCYO x4zysIcFCg== ) ;; 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 20210812082547 20210729065547 44810 nic.cz. eDPJvLuo3gok8m7ZsO316lMXsv9d6TWMYzynZTBz4uJFEn27Rwk9HoCPCt5KrEbb6ze/+pbtFYw4 30fpRfkHcw== ) a.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20210812082547 20210729065547 44810 nic.cz. aB2Iatd+wayAXVvfxuKIlyynBlI/QOOYP8Jzr2hPG3DPVdcHtJPQoLKxb1gVjW9E/lP2/e+ZPfbk qoBQ8gYZMQ== ) b.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20210812082547 20210729065547 44810 nic.cz. fXbcb57iuSOJVrSJSmjDZKSTlK8asNOpYF6Vq5718n2k/V3DOCHZIxkyQ5HaaGGK4nnprDsgdIew 8CTTXDCP7Q== ) b.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20210812082547 20210729065547 44810 nic.cz. b8iGBYT+Oh5t/IaiIS7dfXW+XBPSMGvDIHS06ZwJdxAw00FGvMT6meYw0R6rK51M11Bba7uuaEso +Xn9RlfceQ== ) d.ns.nic.cz. 1800 IN RRSIG ( A 13 4 1800 20210812082547 20210729065547 44810 nic.cz. LLrrP+YYr96lM2pcvX3YTPE9xgPrbfoUEPvEbSuQZNFqTZFGMiO8HZMUmXUzZ3lyFfRtFVNqXdv8 TQBNYRoVog== ) d.ns.nic.cz. 1800 IN RRSIG ( AAAA 13 4 1800 20210812082547 20210729065547 44810 nic.cz. TxL7UFb2iSCu4ajC4QWa+IVVP31J7rJw3699Y+2zS5x+7/BAY2gBYrcUbmGfHcPFiG1IvrtJDpwG jFpTCTGXHw== ) ;; 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
	;; Response received from 193.29.206.1 (181 octets) ;; HEADER SECTION ;; id = 37512 ;; 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 ( 63586 13 2 2b3959024cee1d355ebd9185c5e0d13ac54a9866f8631cb2e2cb0907037d2e81 ) nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20210813114948 20210730101948 9915 cz. iVjKlXacoApJ5q2Xabdu4yE8X6QRF09wln8Tr8SfKpudrX0xV1jyXmVDHnhanOVxidnA8+YCJAyD DMaqsVmVRA== ) ;; 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=63586/SHA-256 has algorithm ECDSAP256SHA256
	Found 1 RRSIGs over DS RRset
	`nic.cz. 3600 IN RRSIG ( DS 13 2 3600 20210813114948 20210730101948 9915 cz. iVjKlXacoApJ5q2Xabdu4yE8X6QRF09wln8Tr8SfKpudrX0xV1jyXmVDHnhanOVxidnA8+YCJAyD DMaqsVmVRA== )`
	RRSIG=9915 and DNSKEY=9915 verifies the DS RRset
	DS=63586/SHA-256 is now in the chain-of-trust
	`nic.cz. 3600 IN DS ( 63586 13 2 2b3959024cee1d355ebd9185c5e0d13ac54a9866f8631cb2e2cb0907037d2e81 )`
	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 = 43829 ;; 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 dz/NfEZutf3JEcALdzQGH811tR0xPBvjQMLTnPvkXJvofQYXNAJ/nGGTKhJb9qkc85xLcN6bCj8m 24fwG+UBTQ== ) ; Key ID = 44810 nic.cz. 1800 IN DNSKEY ( 257 3 13 iJmXgOti+rG2OZEu3lshYDtJqM0UOLCNC+yhOks6LTZB+CjVHiEHmcnYfy9APhbqriRCmT2xjpaF x4CdkYdS4w== ) ; Key ID = 63586 nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20210813135913 20210730122913 63586 nic.cz. FDO+nbN7rP/xbknMu7bD7VlSgvUQfOBdQchK6OliF/f717EMQCxnPXDJz9hKrz+oZhHtayH6rtGO ezllzN7x6A== ) ;; 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 dz/NfEZutf3JEcALdzQGH811tR0xPBvjQMLTnPvkXJvofQYXNAJ/nGGTKhJb9qkc85xLcN6bCj8m 24fwG+UBTQ== ) ; Key ID = 44810`
	`nic.cz. 1800 IN DNSKEY ( 257 3 13 iJmXgOti+rG2OZEu3lshYDtJqM0UOLCNC+yhOks6LTZB+CjVHiEHmcnYfy9APhbqriRCmT2xjpaF x4CdkYdS4w== ) ; Key ID = 63586`
	DNSKEY=63586/SEP is now in the chain-of-trust
	DS=63586/SHA-256 verifies DNSKEY=63586/SEP
	Found 1 RRSIGs over DNSKEY RRset
	`nic.cz. 1800 IN RRSIG ( DNSKEY 13 2 1800 20210813135913 20210730122913 63586 nic.cz. FDO+nbN7rP/xbknMu7bD7VlSgvUQfOBdQchK6OliF/f717EMQCxnPXDJz9hKrz+oZhHtayH6rtGO ezllzN7x6A== )`
	RRSIG=63586 and DNSKEY=63586/SEP verifies the DNSKEY RRset
	DNSKEY=44810 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
	;; Response received from 194.0.13.1 (153 octets) ;; HEADER SECTION ;; id = 37115 ;; 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 20210812082547 20210729065547 44810 nic.cz. NoD4yMM7GKl+99/B/3aLYcMmVDhl7TbGc4PtkIeX+Qbq3BbhCjC6NCuoz1nb181Td8rVLNr90YLe mjhwEuoHHA== ) ;; 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
	;; Response received from 193.29.206.1 (189 octets) ;; HEADER SECTION ;; id = 7614 ;; 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. 1627653553 ;serial 10800 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20210813135913 20210730122913 44810 nic.cz. fpqRAH0ym+uZEApUOuMY/4b3+FdznDTmpPJq8qsiHDwBDE28fQlursNhrTxXyrst0min9cBop+T7 L0q/qfr/xw== ) ;; 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 = 2990 ;; 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. 1627653553 ;serial 10800 ;refresh 3600 ;retry 1209600 ;expire 7200 ;minimum ) nic.cz. 1800 IN RRSIG ( SOA 13 2 1800 20210813135913 20210730122913 44810 nic.cz. fpqRAH0ym+uZEApUOuMY/4b3+FdznDTmpPJq8qsiHDwBDE28fQlursNhrTxXyrst0min9cBop+T7 L0q/qfr/xw== ) ;; 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
	;; Response received from 194.0.13.1 (153 octets) ;; HEADER SECTION ;; id = 30444 ;; 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 20210812082547 20210729065547 44810 nic.cz. NoD4yMM7GKl+99/B/3aLYcMmVDhl7TbGc4PtkIeX+Qbq3BbhCjC6NCuoz1nb181Td8rVLNr90YLe mjhwEuoHHA== ) ;; 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 20210812082547 20210729065547 44810 nic.cz. NoD4yMM7GKl+99/B/3aLYcMmVDhl7TbGc4PtkIeX+Qbq3BbhCjC6NCuoz1nb181Td8rVLNr90YLe mjhwEuoHHA== )`
	RRSIG=44810 and DNSKEY=44810 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 = 63308 ;; 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 20210812082547 20210729065547 44810 nic.cz. NoD4yMM7GKl+99/B/3aLYcMmVDhl7TbGc4PtkIeX+Qbq3BbhCjC6NCuoz1nb181Td8rVLNr90YLe mjhwEuoHHA== ) ;; 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 = 33728 ;; 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 20210812082547 20210729065547 44810 nic.cz. NoD4yMM7GKl+99/B/3aLYcMmVDhl7TbGc4PtkIeX+Qbq3BbhCjC6NCuoz1nb181Td8rVLNr90YLe mjhwEuoHHA== ) ;; 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 20210812082547 20210729065547 44810 nic.cz. NoD4yMM7GKl+99/B/3aLYcMmVDhl7TbGc4PtkIeX+Qbq3BbhCjC6NCuoz1nb181Td8rVLNr90YLe mjhwEuoHHA== )`
	RRSIG=44810 and DNSKEY=44810 verifies the A RRset

nic.cz

	Query to d.ns.nic.cz for nic.cz/A
	Received 153 bytes from 193.29.206.1
	;; Response received from 193.29.206.1 (153 octets) ;; HEADER SECTION ;; id = 10140 ;; 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 20210812082547 20210729065547 44810 nic.cz. NoD4yMM7GKl+99/B/3aLYcMmVDhl7TbGc4PtkIeX+Qbq3BbhCjC6NCuoz1nb181Td8rVLNr90YLe mjhwEuoHHA== ) ;; 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
	;; Response received from 193.29.206.1 (153 octets) ;; HEADER SECTION ;; id = 346 ;; 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 20210812082547 20210729065547 44810 nic.cz. NoD4yMM7GKl+99/B/3aLYcMmVDhl7TbGc4PtkIeX+Qbq3BbhCjC6NCuoz1nb181Td8rVLNr90YLe mjhwEuoHHA== ) ;; 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 20210812082547 20210729065547 44810 nic.cz. NoD4yMM7GKl+99/B/3aLYcMmVDhl7TbGc4PtkIeX+Qbq3BbhCjC6NCuoz1nb181Td8rVLNr90YLe mjhwEuoHHA== )`
	RRSIG=44810 and DNSKEY=44810 verifies the A RRset

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