www.kncar.cz
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:61:41:8a:0d:e8:c1:d7:2c:3d:49:dc:a9:6b:97:b0:47:05 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): 04:61:41:8a:0d:e8:c1:d7:2c:3d:49:dc:a9:6b:97:b0:47:05Serial Number (int): 381543649957176764166036897124876616222469
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: a3:ce:7d:a1:1c:b1:fa:0e:6b:7f:c7:ab:14:e5:f9:60:91:fc:35:80
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): f8:72:c8:02:3f:b1:7f:01:9c:63:6d:d2:0c:88:b3:52:08:bd:84:00
Fingerprint (sha256): b3:c2:9b:34:fd:1a:2e:0c:5c:ac:c9:b7:85:86:7e:5b:28:4e:86:8a:e4:88:bb:c7:43:b5:62:0f:85:be:48:84
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----- MIIGWTCCBUGgAwIBAgISBGFBig3owdcsPUncqWuXsEcFMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAyMjIwODE3MTRaFw0y MDA1MjIwODE3MTRaMBcxFTATBgNVBAMTDHd3dy5rbmNhci5jejCCAiIwDQYJKoZI hvcNAQEBBQADggIPADCCAgoCggIBALU8IDPYHI8ga6MX15STxfOLy45sfa9EcxaL Ne92P2mxJNE50HK7A++lT8JMob3YIT1RyIZC85g6TCp1SZ5ykRDthjTrwQYaUb8X sWBZnn+UKoHsrxP3iZVWadGQk3UohMTuwuPbZgYvu+Z68EM7FMr4K+LNgZxpyIeb /b6UayOUzdDusb13SF1/GI7Iz9gKhR1vYizGUl9xAXel/X78cf3VPbNc996svoU4 Z3kix/piCqctz7SP0d6bUF4D0xtCcbuirxKhhWSrraut+hCWfZCFypgwlvOKM3sw Fw0UB+KoWTv7CXHfF/nocJCeDEx8acV7friZF+thMLVOt9GAs0CT5EWPW+vd0PUf t30FAyGVBNmBU5ALW0vlU3TfWocFDinFweFfNSC5eyV7SFGMuQTC0IAQsk8Q4vtr Pp5lSxHB5tYCuedejfvkAVNrDUCnDOk3Ksm8DSZx9O8m1UIEbRSnGLZ1xLTRfbF9 Y0qIj/QFltPPUUqO5DcDraYSoLlH+Y9daazxcju//zkR1O6I8R+76nWFou8HKZMH LzS+x8riSld5jxUcYb9eUR+UXejvnwy8PFY0hYylQrWN37D0zhkUw+xSNtFjY08c hg0uggW+u0oenIum5gtP4O9M67bmEahrHDSlWGXkxsj80FWBO4it5HatwgkFtjj1 PjGWE97JAgMBAAGjggJqMIICZjAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYI KwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFKPOfaEc sfoOa3/HqxTl+WCR/DWAMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyh MG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgz LmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgz LmxldHNlbmNyeXB0Lm9yZy8wIQYDVR0RBBowGIIIa25jYXIuY3qCDHd3dy5rbmNh ci5jejBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsG AQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB1nkC BAIEgfQEgfEA7wB1APCVpFnyANGCQBAtL5OIjq1L/h1H45nh0DSmsKiqjrJzAAAB cGwvxK0AAAQDAEYwRAIgIDiC2JdVxcDrXencfMG/nABrVsgnoyqsOmfB0NoWx/UC IBmYptmZVD1utpciFBV2WYaT9cYwue28TF+uSP7VlRGiAHYAsh4FzIuizYogTodm +Su5iiUgZ2va+nDnsklTLe+LkF4AAAFwbC/EqQAABAMARzBFAiBNvfDtWfEqqr3W KU3ZfUhAhjX/1ZUaj/YwSUbSs5ZxKwIhANvVCzFjVHhvDl5O6bXCB1bfuXZfdhej 0J1tVRDjCDIoMA0GCSqGSIb3DQEBCwUAA4IBAQAeV0CvWVElLOLDrWfr8HUOgjx4 Y1SSBJhOhBX8NrpRsCyI115Xm3TFP5GROaiTkeBPGuNogX7qIVO1XjafIKsX+wKY kQzoHggn7iVx1m9Vhx8nMHY2V9S99cX2c071K8hsRqRm6v3Nv4qWT572duuuvOKg K5K2tBcPtR1Xe3gVZgJZC3Oo9HvkD7nDGg92WUL3gXRfPhK9JEvwXj8WfBqEPD4J i2AhSWym1UzLV1qkFtrHLj5wHunW6c37NLefl/PGvXRtPUAc1Seq88K8+OFVmp0s kmk2QJyi1N4CuhNqMspxO3J6/BMSA+PQcNwdbD6ougIMLb/3KAxHTdru2b61 -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAtTwgM9gcjyBroxfXlJPF 84vLjmx9r0RzFos173Y/abEk0TnQcrsD76VPwkyhvdghPVHIhkLzmDpMKnVJnnKR EO2GNOvBBhpRvxexYFmef5QqgeyvE/eJlVZp0ZCTdSiExO7C49tmBi+75nrwQzsU yvgr4s2BnGnIh5v9vpRrI5TN0O6xvXdIXX8YjsjP2AqFHW9iLMZSX3EBd6X9fvxx /dU9s1z33qy+hThneSLH+mIKpy3PtI/R3ptQXgPTG0Jxu6KvEqGFZKutq636EJZ9 kIXKmDCW84ozezAXDRQH4qhZO/sJcd8X+ehwkJ4MTHxpxXt+uJkX62EwtU630YCz QJPkRY9b693Q9R+3fQUDIZUE2YFTkAtbS+VTdN9ahwUOKcXB4V81ILl7JXtIUYy5 BMLQgBCyTxDi+2s+nmVLEcHm1gK5516N++QBU2sNQKcM6TcqybwNJnH07ybVQgRt FKcYtnXEtNF9sX1jSoiP9AWW089RSo7kNwOtphKguUf5j11prPFyO7//ORHU7ojx H7vqdYWi7wcpkwcvNL7HyuJKV3mPFRxhv15RH5Rd6O+fDLw8VjSFjKVCtY3fsPTO GRTD7FI20WNjTxyGDS6CBb67Sh6ci6bmC0/g70zrtuYRqGscNKVYZeTGyPzQVYE7 iK3kdq3CCQW2OPU+MZYT3skCAwEAAQ== -----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 381543649957176764166036897124876616222469 . . . . . . . . [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 2020-02-22 08:17:14 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-22 08:17:14 +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 739373747510519853538653649689435379686462464813737046864381547022543660703004527415152693100583424181149796274368887710901509138629712009915403887046141525512223279987740206223070028872540797454946419966510136803783448198061158392646094863075947880401030113650883981740375852170371013294389677756995596850569342187107204627139325811052973295763204244343855234051305036043205149640845259512037974928348544684410958017097075767798510665079348875475741540916688048719229764927270374975084479565583954786731251994649256582986412376032442444501321621247594294377852706568063293347692730012697621430825515180325303224705967298742257438679584481695023202119496287906083177063986038791100439787369469536583326529631002332737678030368708770408739882729562823089158664979075758859332585106805380379932765769710269451493544439457921209775428202306857759395803748462341819446504045356381509755004693147034672882646777547804025080063475934759554072729306732254841026790207782517251720525198808807043602932206689469079901756719589941652200730271973312598302318184283447326147030975949797359187346216970387190414360572792524797371232158719235326506184689376759078383890640333907580952382703616885198635248527001067114988545700264645497363392356041 . . . . . . . . . . . . . . . . . . . . [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) a3ce7da11cb1fa0e6b7fc7ab14e5f96091fc3580 . . . . . . . . . . . . . . . . [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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007500f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb273000001706c2fc4ad00000403004630440220203882d89755c5c0eb5de9dc7cc1bf9c006b56c827a32aac3a67c1d0da16c7f502201998a6d999543d6eb69722141576598693f5c630b9edbc4c5fae48fed59511a2007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e000001706c2fc4a9000004030047304502204dbdf0ed59f12aaabdd6294dd97d48408635ffd5951a8ff6304946d2b396712b022100dbd50b316354786f0e5e4ee9b5c20756dfb9765f7617a3d09d6d5510e3083228 . . . . [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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