contrera.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:7a:10:7f:07:fa:c9:f1:d7:fd:a5:9c:5d:1f:36:31:f4:8b 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=contrera.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:7a:10:7f:07:fa:c9:f1:d7:fd:a5:9c:5d:1f:36:31:f4:8bSerial Number (int): 389985519722875478418314732836389695648907
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: ab:3d:a6:d5:c1:f3:9b:3a:c3:60:92:e2:48:ee:56:51:d5:97:44:29
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): f6:9a:42:6a:7a:0a:94:1a:ca:58:ed:58:39:25:dc:9e:13:4a:c2:a9
Fingerprint (sha256): 6d:27:b2:39:84:a3:9b:b5:2e:78:d0:ad:12:f6:39:4e:40:65:85:ce:ea:f6:c4:fb:4d:70:df:7e:1d:a0:6a:00
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate contrera.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for contrera.com
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
contrera.com
Other certificates including the domain name contrera.com
(limited to 100 certificates)
Certificate
The complete raw certificate details for contrera.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGUDCCBTigAwIBAgISBHoQfwf6yfHX/aWcXR82MfSLMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTExMzAxNzM3MzdaFw0y MDAyMjgxNzM3MzdaMBcxFTATBgNVBAMTDGNvbnRyZXJhLmNvbTCCAiIwDQYJKoZI hvcNAQEBBQADggIPADCCAgoCggIBAMSWTpRapf2lKICDrmg34eBu4MngSrbMgrVj F49mQQKqlqI67x2EORPsI1eCAjKCnao9YOkXfPflawF/t1V8WrVvENr3TswOMVss RbfngD2QuWevLsJkJKn7u84paWCynkz1TOV3wuw4H9ZsGjET0+WRlG7ByeiXm0oE 96qPxEj3kw0q1BbOwMUlAYumjZyA27MSOdX3A7o8KPNai5Rtj+BP2wkgHqGgjz7A QEOB794gy85064vOmvg3pysxfucRzQ6Ggzp9VaaHm2f7z8z5Jo3gIw6tQlPDsczu fbEoZGRCfYbERKfXTmq6H2yU5REwvgHULR8bfeenH6GIzJtazQtkg3uLtrZfMdTn q1Ow9FIRDwgcbNZDxOq3Mq40r4pFZnZJWlTEA9fSC0pFVE5s6nCLdUn8ziVT6zxB yS3GP5VIeGzIsaX33fWSOPGvrQxCVZs2cWR/VR73LhGwwHXnCQKO9VgBgaVVHduy a29s0XRja9bpk9moHKECLeY1CjnKFw3pvP+clPvd5h28akkbHly7uHf2c/k9jNwm zHuM5dRHg3oPSIoGYtSlhi/5hP3K5l/f2Q8HC9dIVujdR8k9DS42BLS9cCiBoHxg S+nEmJ6hBKM0RMI7PbxWWIzj8/8ox6x42kJh3wD6tNoYD6cNC2CO/C6NaNtbvXff Orn12hg5AgMBAAGjggJhMIICXTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYI KwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFKs9ptXB 85s6w2CS4kjuVlHVl0QpMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyh MG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgz LmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgz LmxldHNlbmNyeXB0Lm9yZy8wFwYDVR0RBBAwDoIMY29udHJlcmEuY29tMEwGA1Ud IARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0 dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBBAYKKwYBBAHWeQIEAgSB9QSB8gDw AHYAXqdz+d9WwOe1Nkh90EngMnqRmgyEoRIShBh1loFxRVgAAAFuvZqgEQAABAMA RzBFAiEAzc/X1AkhWc6VBRhVgUF/xpMK9d9/D/ZYKLHfOltb6uICIBOJmU4CDmAY Ah30vafNDFqQBL3JYPszGNw1iCNNI3DoAHYAsh4FzIuizYogTodm+Su5iiUgZ2va +nDnsklTLe+LkF4AAAFuvZqgAwAABAMARzBFAiBtCG4RoqO3eJc6xfVxj4Bq6gmJ apUhQ3MEq5lmy47DUAIhAJDUlZXfqVHWjrViPGDkXumbEBWdksifKcz9yKUcApl7 MA0GCSqGSIb3DQEBCwUAA4IBAQCCzkh8VdOKtvJRBNRU5apgcZ7HBcO4eWcOiTgk zTFKhYlgJy8hrUVGdDD7SO0+iGddWLdcraEwylKjt5hudzIpe76lcuw//iBixie0 Mk224HJITrGO7At1KKPQj3L52zjExUVnDUUJc1Mrz2IPjZZYkjjfDZbKgjOjDmye raQgOptj1pTAAmnIMyQIq61+q7ctB7bQxpjf4nAiM33RTWIJPVW0A0HFsZej+H6s DNW0bBDHrV1zsRJTXADOijlFPk1g3h00iY7As75/k8cYYT7lBFTZb05iV4dyErbO f9S/+7wf0Nmroc7AyrkBxpUL5bxPQoLURt7zAuIc/lar3dWh -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxJZOlFql/aUogIOuaDfh 4G7gyeBKtsyCtWMXj2ZBAqqWojrvHYQ5E+wjV4ICMoKdqj1g6Rd89+VrAX+3VXxa tW8Q2vdOzA4xWyxFt+eAPZC5Z68uwmQkqfu7zilpYLKeTPVM5XfC7Dgf1mwaMRPT 5ZGUbsHJ6JebSgT3qo/ESPeTDSrUFs7AxSUBi6aNnIDbsxI51fcDujwo81qLlG2P 4E/bCSAeoaCPPsBAQ4Hv3iDLznTri86a+DenKzF+5xHNDoaDOn1VpoebZ/vPzPkm jeAjDq1CU8OxzO59sShkZEJ9hsREp9dOarofbJTlETC+AdQtHxt956cfoYjMm1rN C2SDe4u2tl8x1OerU7D0UhEPCBxs1kPE6rcyrjSvikVmdklaVMQD19ILSkVUTmzq cIt1SfzOJVPrPEHJLcY/lUh4bMixpffd9ZI48a+tDEJVmzZxZH9VHvcuEbDAdecJ Ao71WAGBpVUd27Jrb2zRdGNr1umT2agcoQIt5jUKOcoXDem8/5yU+93mHbxqSRse XLu4d/Zz+T2M3CbMe4zl1EeDeg9IigZi1KWGL/mE/crmX9/ZDwcL10hW6N1HyT0N LjYEtL1wKIGgfGBL6cSYnqEEozREwjs9vFZYjOPz/yjHrHjaQmHfAPq02hgPpw0L YI78Lo1o21u9d986ufXaGDkCAwEAAQ== -----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 389985519722875478418314732836389695648907 . . . . . . . . [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 2019-11-30 17:37:37 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-28 17:37:37 +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 'contrera.com' . . . . . . . . [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 802005545386089283243815564497471836320762769112179005835275763983186955589991168804652649198233706655611698187725866866012026589238459877556592861363054151782879225257344443241079500707024441649136135230699106718613096740111860908421322720844820848258711008227517183871798885002782097900170448327426547851854044674800094294122209230266184345703070583790313999794331817560339893685402484093312514313484677594247075746291524482831513628004799728350788117520196516307340945402505366725979985129378631107894725989027543023647513161434955832110354193660185860407702915335568295340494145148197034395881642475178471715461989497179769649084797617245092933629630808362404681082181120839314082064550466356861251904057400394961518603709293744418199506589755466140462460025436495184118586777129029446475213821368206314437167780095872883682516316694181209138985809218715217472755670402349225540161971847184003255431888246188137987939354779641721226183940353432538162249726277397568673473307410290854734412036194398395796237685072340458337166304269896054737153686737338479768542314312267907877781202618970001484579240220612472711935057488149760100969085216123872421005551844829271330169294836066462603792269182619879767478439683261963645258176569 . . . . . . . . . . . . . . . . . . . . [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) ab3da6d5c1f39b3ac36092e248ee5651d5974429 . . . . . . . . . . . . . . . . [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 (16 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'contrera.com' . . . . . . . . . . . . . . . . [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) 00f00076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016ebd9aa0110000040300473045022100cdcfd7d4092159ce9505185581417fc6930af5df7f0ff65828b1df3a5b5beae202201389994e020e6018021df4bda7cd0c5a9004bdc960fb3318dc3588234d2370e8007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016ebd9aa003000004030047304502206d086e11a2a3b778973ac5f5718f806aea09896a9521437304ab9966cb8ec35002210090d49595dfa951d68eb5623c60e45ee99b10159d92c89f29ccfdc8a51c02997b . . . . [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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