www.kncar.cz
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:06:ee:e1:ac:c6:10:71:cd:ec:a4:dd:18:bb:cb:16:bd:9f 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): 03:06:ee:e1:ac:c6:10:71:cd:ec:a4:dd:18:bb:cb:16:bd:9fSerial Number (int): 263696080030863068381756321599114295295391
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 10:7f:d2:00:49:a5:ee:9d:92:fa:a0:ac:e0:c3:e6:82:3f:52:df:18
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): d5:ae:e2:d8:62:0a:d7:2f:a5:a2:42:43:f0:eb:e6:7f:41:13:6a:ed
Fingerprint (sha256): 3d:ba:42:89:50:a6:8d:9b:d7:cb:a6:13:ba:7c:89:a7:ab:6b:9f:8e:91:2f:6d:8f:41:e5:15:61:9f:f8:b0:5b
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----- MIIGWDCCBUCgAwIBAgISAwbu4azGEHHN7KTdGLvLFr2fMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMTUxMTExMzJaFw0y MDAxMTMxMTExMzJaMBcxFTATBgNVBAMTDHd3dy5rbmNhci5jejCCAiIwDQYJKoZI hvcNAQEBBQADggIPADCCAgoCggIBAMCkfy4dKGqIyj4U+yvg+C7a1+AK/NO2Fg3L 6oVI+fO8ExyaJJQqs075XHsV6p4VHbNJ1q0Tyy+VDUIffHhutaZ0diPiKlCK42j4 0quGIdiY1246cLADGTpgj6pYFtTH66lKMuO3ovNetZhDb5S7OY0fWMdB4oK+jlED 8XeUzddHY76XjKIOzPhoZV2Noov3JtXoZ3oHJic6I59wJejeC0Yomo5wyi3/Fgvr ryvBLE0EXp4LH/Mh75RcvqfZC15HGWi8e9Mc7pknjlbfarpJTp+k65cmvGaUwoGi sUuY6O5fR8SB9YDzL1Y1bJ8+cqRbD+pchG85+ORq0zpNUzpPgxDvm81aiZAIif7K fwuq6wwq8JhdRVfy/IA3T24jDu+aWLWtY8VHZPezgFVAQF5ADnmIqptLY2ly+uGv 7W0ypwOhXCxGpSBxhFL+ZX83c9CLaawZRIE1QxT3G3P2dekgxlSmugBjtFpL7+oN J+bBFLiZ4R9p21lpG+M50c34X2gWLX3AR4nuwaCbRn/GPqjGgz+frniHUgNH4SGa 29yUwR6dQJb98zhhbzJbMtz4FD6mZALBL99AIuBlGw4lOTT1xjCGk/Tu4KGvvAYe CSqOriNnvrpJsSuEgGIJabktP3/H/6+C11cRm6FSh2s0h04HwnUyIwb7y7/b2JTq 8QyvRIxXAgMBAAGjggJpMIICZTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYI KwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFBB/0gBJ pe6dkvqgrODD5oI/Ut8YMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyh MG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgz LmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgz LmxldHNlbmNyeXB0Lm9yZy8wIQYDVR0RBBowGIIIa25jYXIuY3qCDHd3dy5rbmNh ci5jejBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsG AQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQIGCisGAQQB1nkC BAIEgfMEgfAA7gB1APCVpFnyANGCQBAtL5OIjq1L/h1H45nh0DSmsKiqjrJzAAAB bc9UoFcAAAQDAEYwRAIgc71WBuVm4l71Db0IM8UQ2geLygCWG8VSWzlTaq5rZYYC IEXCoVUxvoX9CN60P1NR23RWOaCJ+5v3J5E7f65RHMfjAHUAKTxRllTIOWW6qlD8 WAfUt2+/WHopctykwwz05UVH9HgAAAFtz1SgSgAABAMARjBEAiAIHSoS6fRO40Rk ichQErFffdXn2DmLCanwQsWU2XADxAIgaltveZc7c8WruNVEuaEd48X2EZQQx9FG HdSq5ZLcXmQwDQYJKoZIhvcNAQELBQADggEBAE0C35E1rwCf1AKPDhgnr22iIwPd I1Ed0xgidhVSj7WpyFpr2GmSAJyVYO5vD5w3WR0J3EALbw7sHzucjybc5oc6HnEa mpZCMo1qyhkdWVjcTGtyoSrkIi63YOXr5PcrHOoPHbSjeW6e/sSiR1HX5OP2io1a 787S1fFQeSXvzs5us6GyKijWNy+2yIgThf9dYtfENBHZWMC9gmcI79WrX5/fw31B f7/MnheoddtSM7kdZOC/UmCraB1Q17U+chZuyPPMs89hfOKfYwavHbofn+NwK/sA DtwWU4oCXVReyVbcyZZhPV52kKZFQ5U4omipp3dvKa7JXgUKTL1kvfqYgJU= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAwKR/Lh0oaojKPhT7K+D4 LtrX4Ar807YWDcvqhUj587wTHJoklCqzTvlcexXqnhUds0nWrRPLL5UNQh98eG61 pnR2I+IqUIrjaPjSq4Yh2JjXbjpwsAMZOmCPqlgW1MfrqUoy47ei8161mENvlLs5 jR9Yx0Higr6OUQPxd5TN10djvpeMog7M+GhlXY2ii/cm1ehnegcmJzojn3Al6N4L RiiajnDKLf8WC+uvK8EsTQRengsf8yHvlFy+p9kLXkcZaLx70xzumSeOVt9quklO n6Trlya8ZpTCgaKxS5jo7l9HxIH1gPMvVjVsnz5ypFsP6lyEbzn45GrTOk1TOk+D EO+bzVqJkAiJ/sp/C6rrDCrwmF1FV/L8gDdPbiMO75pYta1jxUdk97OAVUBAXkAO eYiqm0tjaXL64a/tbTKnA6FcLEalIHGEUv5lfzdz0ItprBlEgTVDFPcbc/Z16SDG VKa6AGO0Wkvv6g0n5sEUuJnhH2nbWWkb4znRzfhfaBYtfcBHie7BoJtGf8Y+qMaD P5+ueIdSA0fhIZrb3JTBHp1Alv3zOGFvMlsy3PgUPqZkAsEv30Ai4GUbDiU5NPXG MIaT9O7goa+8Bh4JKo6uI2e+ukmxK4SAYglpuS0/f8f/r4LXVxGboVKHazSHTgfC dTIjBvvLv9vYlOrxDK9EjFcCAwEAAQ== -----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 263696080030863068381756321599114295295391 . . . . . . . . [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 2019-10-15 11:11:32 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-13 11:11:32 +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 785913100058651753105449662500673150701799150674442965965542308067386356225217513364282676694844471277063615873064900647232621630913711751796215961930664299150000858413902897454361254380188846060696980441966978247185824801408030626360219721259501423946273656075707973871278255899193679861470435608655198235759968565350709554347127573272293282826398254803558163680363630010227218875063561474473559744394897128880849605122443824447683138320394619852206522602080014505196619140677908495604389950267701155376437168473400172735868476529336885146495465213287073729888740550031881325488235620376578399674781918177334323023165473342948520363757006268035853844993375484448633402592339347182100187287451334012341504749243175230544414891544737840519086883529875171971623316621131905903411505651271164902493328963663676957004472046844917832208501925911337207482889408608039083605910062150387257000877183172349360267183136747321800119287496639857849853236300898877108705468013428820970441519468450665333154080431161509599756665268699191801136422627011281890192327751396155502948621674457863511869465416902472104925207720190043728180223796612757852074670275949731603458589040037968458411097262064233323701053882283962832377611303487395159160949847 . . . . . . . . . . . . . . . . . . . . [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) 107fd20049a5ee9d92faa0ace0c3e6823f52df18 . . . . . . . . . . . . . . . . [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 (243 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes) 00ee007500f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016dcf54a0570000040300463044022073bd5606e566e25ef50dbd0833c510da078bca00961bc5525b39536aae6b6586022045c2a15531be85fd08deb43f5351db745639a089fb9bf727913b7fae511cc7e3007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016dcf54a04a00000403004630440220081d2a12e9f44ee3446489c85012b15f7dd5e7d8398b09a9f042c594d97003c402206a5b6f79973b73c5abb8d544b9a11de3c5f6119410c7d1461dd4aae592dc5e64 . . . . [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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