mail.tkf.cz
Issued by RapidSSL RSA CA 2018
About this certificate
This digital certificate with serial number 0c:a6:92:fc:6a:d7:76:9f:b0:ac:6c:80:a8:89:8c:a9 was issued on by DigiCert Inc.
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=mail.tkf.cz
DigiCert Inc
Organization:
DigiCert Inc
Organization unit: www.digicert.com
Organization unit: www.digicert.com
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 0c:a6:92:fc:6a:d7:76:9f:b0:ac:6c:80:a8:89:8c:a9Serial Number (int): 16815638458300748876964395427629206697
Serial Number lenght: 124 bits, 16 octets
SubjectKeyId: 81:82:fc:33:95:3c:00:bc:8f:ce:67:e6:73:89:28:df:ec:7f:b7:72
AuthorityKeyId: 53:ca:17:59:fc:6b:c0:03:21:2f:1a:ae:e4:aa:a8:1c:82:56:da:75
Fingerprint (sha1): d3:a0:b4:87:4d:dc:cc:14:dc:56:67:1b:eb:b6:3c:0a:5a:d8:c9:2b
Fingerprint (sha256): 9f:73:2b:8f:d6:e9:31:8e:19:8f:ee:c3:15:e0:8e:34:66:06:a3:8e:85:9f:93:ef:75:62:28:6a:cf:50:e3:5d
Issuing Certificate URL: http://cacerts.rapidssl.com/RapidSSLRSACA2018.crt
Revocation information
OCSP Server: http://status.rapidssl.comCRL Distribution Point: http://cdp.rapidssl.com/RapidSSLRSACA2018.crl
Check the revocation status for certificate mail.tkf.cz
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for mail.tkf.cz
Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
10 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
mail.tkf.cz
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Certificate
The complete raw certificate details for mail.tkf.cz in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIEsDCCA5igAwIBAgIQDKaS/GrXdp+wrGyAqImMqTANBgkqhkiG9w0BAQsFADBe MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3 d3cuZGlnaWNlcnQuY29tMR0wGwYDVQQDExRSYXBpZFNTTCBSU0EgQ0EgMjAxODAe Fw0yMDAyMTIwMDAwMDBaFw0yMjAzMDgxMjAwMDBaMBYxFDASBgNVBAMTC21haWwu dGtmLmN6MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6X2dHNciW9GV pqpZuUkDDIlaiT8AaJkChuNZAUIr7vLqZm9tb8TwMttijnU4jppquZ5BwQTJRzDk BqgHhx0MJPZpAqx/373w4F2NTNjJ1NRiSDUhHPkwz1Pl1A3BOmG90TFVEoCQ7XTp tFzOOIdjnZaI57TRGdXeOdCGOD+MJ4QcXxrtC4MutB50OW/bafcV0EZH8mbxEVJT BZ47lYh0SO0tbQNdE3Xs+JquK9xfkBBMWbyGIeEQpu9ltu5wTgfnjxN0KiSQJPRF Tv2m2DZTCBKZdWbUfKxHyj4beQJkydpcVHZWnkQpT/gL9Tpyq1yTpzwBCLBzmgpy 6sYc+P4BmQIDAQABo4IBsDCCAawwHwYDVR0jBBgwFoAUU8oXWfxrwAMhLxqu5Kqo HIJW2nUwHQYDVR0OBBYEFIGC/DOVPAC8j85n5nOJKN/sf7dyMBYGA1UdEQQPMA2C C21haWwudGtmLmN6MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcD AQYIKwYBBQUHAwIwPgYDVR0fBDcwNTAzoDGgL4YtaHR0cDovL2NkcC5yYXBpZHNz bC5jb20vUmFwaWRTU0xSU0FDQTIwMTguY3JsMEwGA1UdIARFMEMwNwYJYIZIAYb9 bAECMCowKAYIKwYBBQUHAgEWHGh0dHBzOi8vd3d3LmRpZ2ljZXJ0LmNvbS9DUFMw CAYGZ4EMAQIBMHUGCCsGAQUFBwEBBGkwZzAmBggrBgEFBQcwAYYaaHR0cDovL3N0 YXR1cy5yYXBpZHNzbC5jb20wPQYIKwYBBQUHMAKGMWh0dHA6Ly9jYWNlcnRzLnJh cGlkc3NsLmNvbS9SYXBpZFNTTFJTQUNBMjAxOC5jcnQwCQYDVR0TBAIwADATBgor BgEEAdZ5AgQDAQH/BAIFADANBgkqhkiG9w0BAQsFAAOCAQEA3cBDrs/oEauIs2PT R5kGl42+M32NXlCMuaVvXg13Taov1LikSl+E7kQyQPm8vc4K1OTs2+NQTWVGYkYH 6bNeV90pP+TsweZIVJVSbWMQOtAfrqJ4Ux7QCo512eZW70wnxRQZp1L3QR89YrVg nL2YB0YXLgUDHN0sElMY4iAjt05wwAjwBPwKcT3HfW14DFlxI4ANAV12IvMWJwKg P65aXPgzWSboWgXg05O0WtA2LwmEEv7bVDq91MFr2adp9h9m6XSo9oGCTc+x1R6+ lVVuUnhp9CcrkJQYa4HI+kbg2UewrMM4Mw10mm/XxBCi5r+4pEdaHCdYJaEEnP6a x74HLw== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6X2dHNciW9GVpqpZuUkD DIlaiT8AaJkChuNZAUIr7vLqZm9tb8TwMttijnU4jppquZ5BwQTJRzDkBqgHhx0M JPZpAqx/373w4F2NTNjJ1NRiSDUhHPkwz1Pl1A3BOmG90TFVEoCQ7XTptFzOOIdj nZaI57TRGdXeOdCGOD+MJ4QcXxrtC4MutB50OW/bafcV0EZH8mbxEVJTBZ47lYh0 SO0tbQNdE3Xs+JquK9xfkBBMWbyGIeEQpu9ltu5wTgfnjxN0KiSQJPRFTv2m2DZT CBKZdWbUfKxHyj4beQJkydpcVHZWnkQpT/gL9Tpyq1yTpzwBCLBzmgpy6sYc+P4B mQIDAQAB -----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 16815638458300748876964395427629206697 . . . . . . . . [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 'DigiCert Inc' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.11 (organizationalUnitName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'www.digicert.com' . . . . . . . . . . . . [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 'RapidSSL RSA CA 2018' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-12 00:00:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2022-03-08 12:00:00 +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 'mail.tkf.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 (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 29475467491700256846016470985798323287934812051454733946434646903581875057425649351428060547483057934726426170296993690120991202264056220143044628687794681032415327725373636616205682330250823732168274620015076552205039862989931295662037756282316752648987715617133539659622114852387978082177027804318223501678125375194211235145313256311384633429522791204833109924170518836277517057711227814865685672313303359011856013172253004335999592206523439373874974070897027641311988473848400499666782227623339911398687691447003626188101550188154127272848215875561854353753150518448834353146080216861811919250606313000526877163929 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 53ca1759fc6bc003212f1aaee4aaa81c8256da75 . . . . . . . . . . . . . . . . [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) 8182fc33953c00bc8fce67e6738928dfec7fb772 . . . . . . . . . . . . . . . . [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 (15 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.tkf.cz' . . . . . . . . . . . . . . . . [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 2.5.29.31 (cRLDistributionPoints) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (55 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cdp.rapidssl.com/RapidSSLRSACA2018.crl' . . . . . . . . . . . . . . . . [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 2.16.840.1.114412.1.2 (digiCertDVCert) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 'https://www.digicert.com/CPS' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (105 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://status.rapidssl.com' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://cacerts.rapidssl.com/RapidSSLRSACA2018.crt' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [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 1.3.6.1.4.1.11129.2.4.3 (CT Precertificate Poison) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . [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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