od.o2.cz
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:e8:66:3a:3f:5d:c3:45:06:80:40:6e:36:2a:b8:a8:30:0a was issued on by Let's Encrypt.
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=od.o2.cz
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:e8:66:3a:3f:5d:c3:45:06:80:40:6e:36:2a:b8:a8:30:0aSerial Number (int): 427530536546707023716415710672403042938890
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: e2:a4:80:92:55:15:01:12:83:e1:96:bc:f1:be:a2:9c:ba:29:ac:47
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 37:5a:00:72:16:c9:12:0e:ef:38:4d:af:29:07:31:7a:f4:6f:4c:f4
Fingerprint (sha256): 05:ed:d5:5b:35:a3:7d:8f:81:77:23:48:c7:e9:3d:cf:c2:92:d0:fe:c2:72:ad:02:8f:64:cd:ec:c9:e8:b1:78
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate od.o2.cz
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for od.o2.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
9 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
od.o2.cz
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Certificate
The complete raw certificate details for od.o2.cz in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFSDCCBDCgAwIBAgISBOhmOj9dw0UGgEBuNiq4qDAKMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA2MjQxMzE0NTRaFw0x OTA5MjIxMzE0NTRaMBMxETAPBgNVBAMTCG9kLm8yLmN6MIIBIjANBgkqhkiG9w0B AQEFAAOCAQ8AMIIBCgKCAQEA1qtbqUuVBoGipDVctVdtjWpYd4FKog8PAyfuplUE 1uJ6AMMSR4r2eLDOuZg8MA6ftncFCwa9xapVykgdJVh6eIVXRyfwP4YDPRjj19K9 QPpa6d4S34TFpqyTP24ofx0vLp9U05eO2MtuOmVN+qH/yBW4sH5vE2zI+RYEHvAq tAWbsLy6Q8Vp62EpRWUkUktO8cUJxIYKhpb1SYo2PsCL94ODguljDsUQdlp96jH9 lOHjTAd+Yt+FLzpYh7ZgnSWwNT+ZfxMdRqgcKonOAyzUh4Ew5I4cLuUTMTTujrN1 +fTDDLMZnOGbuepm1YZdpE8sF5gaHxAFIFu+8yqEB5M5swIDAQABo4ICXTCCAlkw DgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAM BgNVHRMBAf8EAjAAMB0GA1UdDgQWBBTipICSVRUBEoPhlrzxvqKcuimsRzAfBgNV HSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggrBgEFBQcBAQRjMGEwLgYI KwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRzZW5jcnlwdC5vcmcwLwYI KwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRzZW5jcnlwdC5vcmcvMBMG A1UdEQQMMAqCCG9kLm8yLmN6MEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDwAHYA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFridb3GgAABAMARzBFAiEAzs8Xzj11GKBf0Zdzx5UtTKsl uYanxEbryzkQxRGUu8ACIB5cuKj/L9b7AdQG0gkPyv+9x1bqujxo1Fag0OtJemCE AHYAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFridb5AAAABAMA RzBFAiEAmWwauyf7X4b5lbbBGGE0GqvHGLDoGIxCBj+PTLqG5K4CICshMDN1pwSd h1A2J9wqx26s4WFSHr3ASOy8q2TsZkiXMA0GCSqGSIb3DQEBCwUAA4IBAQAWkdtK RhW5Q0rTkQFARisA+x0NQ086e7NwFAcbtC7wHMh1zYv5/D1IlN5UhoLk46I+E40Q E9YFoulQuLmq8m29FKJxtaLtmXO3hjM568wYYdlIGP5a63BtL7LmMrY8EjiIdNUM +MBeFy4hflVMFpstojx7GKnHUwyOVOZZ338rfuXjnq5ijUa5Q6IQb7eYE9moXoGn F69VucB01q0UKAcN0xpbln2vz9xKnjh20x12DwWGQ5KdTCk++3znz6NagEA9nx03 LqYmVXafU8ZAj2mw8365EgDj7V6HEC4m5GgJ/tHUor9HH5ne3JIZucL/HFvCXHvn 0iE2remvXEYSf1IS -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1qtbqUuVBoGipDVctVdt jWpYd4FKog8PAyfuplUE1uJ6AMMSR4r2eLDOuZg8MA6ftncFCwa9xapVykgdJVh6 eIVXRyfwP4YDPRjj19K9QPpa6d4S34TFpqyTP24ofx0vLp9U05eO2MtuOmVN+qH/ yBW4sH5vE2zI+RYEHvAqtAWbsLy6Q8Vp62EpRWUkUktO8cUJxIYKhpb1SYo2PsCL 94ODguljDsUQdlp96jH9lOHjTAd+Yt+FLzpYh7ZgnSWwNT+ZfxMdRqgcKonOAyzU h4Ew5I4cLuUTMTTujrN1+fTDDLMZnOGbuepm1YZdpE8sF5gaHxAFIFu+8yqEB5M5 swIDAQAB -----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 427530536546707023716415710672403042938890 . . . . . . . . [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 2019-06-24 13:14:54 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-22 13:14:54 +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 'od.o2.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 27099497067523863686713544882757324946739365695114327360889220142723328057963850267461959203573540603685162376961343828655531592432554938828096567138321822341245766242789301342223601620611857166794848576888830630898164103721004595106063085706087177493027709889295520086079399755765183322902819889719318183322610906632346662844810379847776667465630318046374876315081402936766084004683687511095992350449321942588204509926590411513146732813639132857478435937888176950953099304136590977256240463576025226614891982012820087919128652749686831615612793460173562133332261141858573786751445420644419277443482961958371020978611 . . . . . . . . . . . . . . . . . . . . [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) e2a480925515011283e196bcf1bea29cba29ac47 . . . . . . . . . . . . . . . . [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 (12 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'od.o2.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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016b89d6f71a0000040300473045022100cecf17ce3d7518a05fd19773c7952d4cab25b986a7c446ebcb3910c51194bbc002201e5cb8a8ff2fd6fb01d406d2090fcaffbdc756eaba3c68d456a0d0eb497a6084007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016b89d6f9000000040300473045022100996c1abb27fb5f86f995b6c11861341aabc718b0e8188c42063f8f4cba86e4ae02202b21303375a7049d87503627dc2ac76eace161521ebdc048ecbcab64ec664897 . . . . [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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