www.kncar.cz
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:4a:87:0f:b9:9a:db:4d:63:e1:34:21:9b:72:7b:4f:a7:a6 was issued on by Let's Encrypt.
With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.
We have idenified some issues with this certificate:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=www.kncar.cz
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:4a:87:0f:b9:9a:db:4d:63:e1:34:21:9b:72:7b:4f:a7:a6Serial Number (int): 286697280375828812380281138359435780925350
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: a7:da:33:04:6c:d1:85:ed:6b:bc:3f:bd:9c:ab:c4:12:64:c7:24:10
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 1d:d1:f5:63:c6:16:31:1a:66:60:5d:bb:06:f4:ef:de:fb:d9:95:e7
Fingerprint (sha256): a1:c8:fb:d8:56:61:48:2e:42:56:b5:ea:05:9d:97:4c:51:a7:d3:9b:4c:67:cc:c6:75:f5:30:e1:ee:db:24:4d
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www.kncar.cz
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.kncar.cz
Public Key Algorithm
RSA
Key Size
4096
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
9 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
kncar.cz
www.kncar.cz
www.kncar.cz
Other certificates including the domain name kncar.cz
(limited to 100 certificates)
Certificate
The complete raw certificate details for www.kncar.cz in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGXDCCBUSgAwIBAgISA0qHD7ma201j4TQhm3J7T6emMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA4MDcxMDQ2MzFaFw0x OTExMDUxMDQ2MzFaMBcxFTATBgNVBAMTDHd3dy5rbmNhci5jejCCAiIwDQYJKoZI hvcNAQEBBQADggIPADCCAgoCggIBAL/pfFGG3d7LRMq8yz5H+sGiFfb/+fNR3+70 tpYxZU+v0e4+YN0rhei+ohqBBQD9KNYK3m8xwkZDYYJ6cjtzf2Z5lb2/uatEX9LB kKWexSHxnA16qPpNtbBm0o7tk7PRkwMsyxkA2/6/Y7PGG/3NSro8+fJiArSN4bz7 ZBSJ+Hz4rkIYKzBAM6YbzjzeBPt0n1bbpmc5SnSP9Sg+hZJvbWSc1Wzk82Ys8O2t GHAqm/PQMY98zgXuMfkQy3I5C/dcOyXhiwPfM28wFzJyAOpQIJcnE3DqG2JjSGPP J4TGgPzTsd+C9XylstX1JVxccUBeIIjhK4E4b5Ob+QzAyU71Q036yt8gh/PSppj6 Q5g1CmmegzUoFKK64QjwnKYryQkpHDEXfxLdBF5VWVJcPlB6u2jv0y3/MfuZJul3 +O51uq109X20CNhKUePxhVzKpGaLJ5+ETTbzltqownoGuCx1NtmQjJwOVVsnc0vy fHEkU628ZPcPMjY6cxeKlQtfXm3teppj/QX+sWtA7jdoYVfub5ndsRgVsv6BAjWW l+HfV4632Ls1z97f3nDXZoImc5mOJOiJg7RBMKtmaCeJgQq04WZ9mN2r5KYJzdoV VNZbb5msnUTAmGmuFfJB6Kl6r/KKzFGRoJZh/Qw3fKJr3aLbTfSjbsbM05zmdmaY xHSaqmpLAgMBAAGjggJtMIICaTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYI KwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFKfaMwRs 0YXta7w/vZyrxBJkxyQQMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyh MG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgz LmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgz LmxldHNlbmNyeXB0Lm9yZy8wIQYDVR0RBBowGIIIa25jYXIuY3qCDHd3dy5rbmNh ci5jejBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsG AQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQYGCisGAQQB1nkC BAIEgfcEgfQA8gB3AOJpS64m6OlACeiGG7Y7g9Q+5/50iPukjyiTAZ3d8dv+AAAB bGvm7JYAAAQDAEgwRgIhALpDOMQBXDLF88TO/lOShJCMhyFs5HDwTNAFZx95hxgx AiEA5M1FvtjU5v8t/+yjev4mHUXtnk7AMiWzTSzXfyJLSFsAdwBj8tvN6DvMLM8L coQnV2szpI1hd4+9daY4scdoVEvYjQAAAWxr5uq1AAAEAwBIMEYCIQCyjEjtNCbe 6KYlPxxDVrJ4e8ozVe7+24/+dlO9hIo6HwIhAMMgl2z37fSI+Y1NUSUD765usAYE kkSOpEFMhUfCwzVVMA0GCSqGSIb3DQEBCwUAA4IBAQAr9oMmTNrhQgAUy2wfyLUq ojwBju1Vv2bp8p1CeHzDnf8Z1W0zKV/2gZT8yNs3jM9bbED4gET7CUy5Q+Z6mctE cNWKF/m7mcjnnAkrn7590oK8qh1fzprrZAa1u5/O10rb9VsNmPK7gbIW4t4brntZ LGIYKOLT0khSMYFdWaNmuwJr6MkrUFCF5KJWNzejsYH9AevZvOtdRHdr3rioadEp SyCfJwCbzgNq0J1l7BV4nCnKa2Sms1yCzy7fdmUowX1b90/H3S19pM9/z1qvH11D QgJzDFnp1QbPBnJPeMF0xc+lPNkzGIYo89Aj4l+eaVSb66N1n4V/80veN53LmsnN -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAv+l8UYbd3stEyrzLPkf6 waIV9v/581Hf7vS2ljFlT6/R7j5g3SuF6L6iGoEFAP0o1grebzHCRkNhgnpyO3N/ ZnmVvb+5q0Rf0sGQpZ7FIfGcDXqo+k21sGbSju2Ts9GTAyzLGQDb/r9js8Yb/c1K ujz58mICtI3hvPtkFIn4fPiuQhgrMEAzphvOPN4E+3SfVtumZzlKdI/1KD6Fkm9t ZJzVbOTzZizw7a0YcCqb89Axj3zOBe4x+RDLcjkL91w7JeGLA98zbzAXMnIA6lAg lycTcOobYmNIY88nhMaA/NOx34L1fKWy1fUlXFxxQF4giOErgThvk5v5DMDJTvVD TfrK3yCH89KmmPpDmDUKaZ6DNSgUorrhCPCcpivJCSkcMRd/Et0EXlVZUlw+UHq7 aO/TLf8x+5km6Xf47nW6rXT1fbQI2EpR4/GFXMqkZosnn4RNNvOW2qjCega4LHU2 2ZCMnA5VWydzS/J8cSRTrbxk9w8yNjpzF4qVC19ebe16mmP9Bf6xa0DuN2hhV+5v md2xGBWy/oECNZaX4d9XjrfYuzXP3t/ecNdmgiZzmY4k6ImDtEEwq2ZoJ4mBCrTh Zn2Y3avkpgnN2hVU1ltvmaydRMCYaa4V8kHoqXqv8orMUZGglmH9DDd8omvdottN 9KNuxszTnOZ2ZpjEdJqqaksCAwEAAQ== -----END PUBLIC KEY-----
ASN.1 decoded
[c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2 . . . . . . . . [c:0|t:2|false] INTEGER 286697280375828812380281138359435780925350 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt Authority X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-07 10:46:31 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-05 10:46:31 +0000 UTC . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'www.kncar.cz' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption) . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 782932869415765282227984184385775615005050988471071010771531585496482063541664397309291290603836385957345519968712817710040382649103246188598701620217122711533359702266319654234881499278821736592638840244477436228990061979876633773379115505625179202455123644002776257199594930888375234327441828388728225582546794105550526760687217165283191315870522111716518831335120411659542943747308459807214933426730122999573070462326381977824304252830410983844807238719907836773256977384413672992038736158126998860282977868331271687532106020060378859124750346991400016202323096274180064831088497622045349215018505399591820588942716613757124022845044754967310229217540109853344775263750968312300324575797839811019147948921757393789167604936113755959260279768871099755547374807038427014109710073532721837317484662978976512211532513613303633235494751301212995183457969440287190114309958084427334192227520582107715735139299075677006695860663793199205752931049341663187598717869345088965003794200304801614329782479928772162803050061438846111806121231148147018258065996280575997311211458368577085202315740879068352716527567340659686077867968970839649587290546585311069433876102557287559647136735359512613302779316395246037598031100659902010194026719819 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537 . . . . . . . . [c:2|t:3|true] ORAddress . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits) 05a0 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes) a7da33046cd185ed6bbc3fbd9cabc41264c72410 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (99 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.int-x3.letsencrypt.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cert.int-x3.letsencrypt.org/' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (26 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kncar.cz' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.kncar.cz' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (69 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (247 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) 00f2007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016c6be6ec960000040300483046022100ba4338c4015c32c5f3c4cefe539284908c87216ce470f04cd005671f79871831022100e4cd45bed8d4e6ff2dffeca37afe261d45ed9e4ec03225b34d2cd77f224b485b00770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016c6be6eab50000040300483046022100b28c48ed3426dee8a6253f1c4356b2787bca3355eefedb8ffe7653bd848a3a1f022100c320976cf7edf488f98d4d512503efae6eb0060492448ea4414c8547c2c33555 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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