www.contrera.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:cc:cb:46:e4:9a:42:75:b6:22:7b:38:f5:88:e4:37:af:24 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=www.contrera.com
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:cc:cb:46:e4:9a:42:75:b6:22:7b:38:f5:88:e4:37:af:24Serial Number (int): 331024662027687716821387025024602202418980
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: fd:0f:7c:1d:68:31:aa:8b:3b:3f:4f:1b:29:2e:8a:40:37:11:03:cc
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 6c:d7:9a:f5:70:69:8b:05:8e:9f:f7:72:2e:c2:94:5e:21:37:01:13
Fingerprint (sha256): 8f:f0:2b:87:84:b9:28:00:67:9d:77:20:21:21:14:90:3e:1e:44:ca:38:38:56:55:07:79:f6:3d:24:3f:6a:69
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.contrera.com
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.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
www.contrera.com
Other certificates including the domain name contrera.com
(limited to 100 certificates)
Certificate
The complete raw certificate details for www.contrera.com in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGWDCCBUCgAwIBAgISA8zLRuSaQnW2Ins49YjkN68kMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA3MjYxODEyMDJaFw0x OTEwMjQxODEyMDJaMBsxGTAXBgNVBAMTEHd3dy5jb250cmVyYS5jb20wggIiMA0G CSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQDaFuRZRj56EnBcvTGiFEjLVoaBx27s 2hPsHlTMXVoMhpu4oKMCVpaI1YGUtLGOAWDSIYTMCGs8hxeIrlyZSx6o0pA1THCu usI8OGfOgFEH79EpoBBFPbt56If5THHf6SdWCtKVqHCPMqbmbK+VPfdQEAL6OiKO UVefJaMr0h6UsV5K+M/74ZGBCAXImEWiiQoL0x8TTYRhAgrdpgZbH2WDVHQkpaEW YpwLTlw4lS9zBSkG1fs0e4UlK+x32Wnz9wwrFPXye8/R6UyDYKM+o2cnMHftd/vd fiCcA0UBhNKQDWreLLQEow8hET5AvOdf6C1rwT5oee1eLEQQBX+fjbRlHmE6SAzo 7ng5gZAOV8iGMkOtNXVQj4V8LjdPG7Jqdf/GL/UfscMkXaMnPXVMNLpqMyZCyAe6 DB/5rF6EaV7i+WG4y1vKaqu1KcYl+r4Xqzehi3OhOkI5F8dBBxYdOHa9sNUlv6cv /ZipHnFSSrDpuZvL6PjvFjZXrCbliXxKstS/fvV/h3/M4a6UoBgoBt1YCD/5ggnU yjIStEPmJN+8/om0QAnzYoQPKYVx1sx33G2ScET1JfbZP+g0bIpvMD30DJ7XlEmB P/gQSLKFbWvAYS3CaYDJBNAZnwsC3vJzXFV96G/UYa2cpBBqmQRNRz9B+pSybPu9 IygaH/Ae8WOESwIDAQABo4ICZTCCAmEwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQW MBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBT9 D3wdaDGqizs/TxspLopANxEDzDAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv 86jsoTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmlu dC14My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0Lmlu dC14My5sZXRzZW5jcnlwdC5vcmcvMBsGA1UdEQQUMBKCEHd3dy5jb250cmVyYS5j b20wTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEF BQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEEBgorBgEEAdZ5AgQC BIH1BIHyAPAAdgDiaUuuJujpQAnohhu2O4PUPuf+dIj7pI8okwGd3fHb/gAAAWwv sny+AAAEAwBHMEUCIBRHFRmFZsaR+6Kw4U3aJx/TIRcaZNMjmMx5i//gWFnVAiEA 9902SYINU4n999oX+S7hHmHca9usfMrjB1+cpZY9a+AAdgApPFGWVMg5ZbqqUPxY B9S3b79Yeily3KTDDPTlRUf0eAAAAWwvsnzjAAAEAwBHMEUCIQDQVM32u0fqMnvP bkGoxuo5RAGqUtV2hEHHRI5m1yuz9AIgD6jZXrxztgy5ARUb0TWLAQ53TF5+Y/lC xCDi3y1U8NgwDQYJKoZIhvcNAQELBQADggEBAEKJctiVsgzy2tDPscZsoi65cRWN ufRubWLzSY5Ls+kh4ZIsTiGrwdqLQvmZvW2ZLpcJ/Rd8BRzx8h1EnwS1V8N07dqe rsJwTsRm+kStBAsrtp8YxZXPzSAl1Hn7AqHyoK4otH9xtTpNncrEcddedZlbeXGM UMVLp6TyU+J3vm9Mx0ax9w8FhsmAbGjeFxBg19A36fkk9lExl50dil+st6Krwiij cfKNRCWjH6Y2518q3+yJlXSWpIwEivalAI5q5oZP1b2WG76ep8Xx1qQuBKRDWl+a MPqwLMsWB+8f/wuDzpoN5DK96kIDqr39B0r0bhlqHYlVnKWa/3NQNT/aZsw= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA2hbkWUY+ehJwXL0xohRI y1aGgcdu7NoT7B5UzF1aDIabuKCjAlaWiNWBlLSxjgFg0iGEzAhrPIcXiK5cmUse qNKQNUxwrrrCPDhnzoBRB+/RKaAQRT27eeiH+Uxx3+knVgrSlahwjzKm5myvlT33 UBAC+joijlFXnyWjK9IelLFeSvjP++GRgQgFyJhFookKC9MfE02EYQIK3aYGWx9l g1R0JKWhFmKcC05cOJUvcwUpBtX7NHuFJSvsd9lp8/cMKxT18nvP0elMg2CjPqNn JzB37Xf73X4gnANFAYTSkA1q3iy0BKMPIRE+QLznX+gta8E+aHntXixEEAV/n420 ZR5hOkgM6O54OYGQDlfIhjJDrTV1UI+FfC43TxuyanX/xi/1H7HDJF2jJz11TDS6 ajMmQsgHugwf+axehGle4vlhuMtbymqrtSnGJfq+F6s3oYtzoTpCORfHQQcWHTh2 vbDVJb+nL/2YqR5xUkqw6bmby+j47xY2V6wm5Yl8SrLUv371f4d/zOGulKAYKAbd WAg/+YIJ1MoyErRD5iTfvP6JtEAJ82KEDymFcdbMd9xtknBE9SX22T/oNGyKbzA9 9Aye15RJgT/4EEiyhW1rwGEtwmmAyQTQGZ8LAt7yc1xVfehv1GGtnKQQapkETUc/ QfqUsmz7vSMoGh/wHvFjhEsCAwEAAQ== -----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 331024662027687716821387025024602202418980 . . . . . . . . [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 2019-07-26 18:12:02 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-24 18:12:02 +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.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 889727216046604816707471638301793259234212719300194147052638288344241943571625792084514611341887943099897806516272935725086862637121065250492358632178925300813232225567090119217314457747966614742066797414039730749525965972603008613651650420300171840041531668947368092634509985909655145141374714420732476051495546757761107714959708114130485021243936103123958416412108352678180758977785172474962034729990307599393158228122741728614381094619376771298166744454423590540522097198625359474323930691867422416792379649966753089280673416368019168115793009772654938894685990186380487431348457644194547167174000776231750081870167708919241309795386379153427192266529513778804686156527999323684756583956281316041747710707428996794442338161380560841751923906422026680141155981963325349223037560251267646011169573525474188043279137568436189618152355334682144720140875653667722098807152903060308904585060215212818127719320314609650295872164703530538581330218215626030500088787981054850084444797719157417882160983636249349473590777716680394633281195920344783158133430570973828594413021348663423156700316608732282448063252775750807587744425544060458909128476152278633726363800207545457045573723443543373180919848672565363179994714927096825436872868939 . . . . . . . . . . . . . . . . . . . . [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) fd0f7c1d6831aa8b3b3f4f1b292e8a40371103cc . . . . . . . . . . . . . . . . [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 (20 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.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) 00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016c2fb27cbe00000403004730450220144715198566c691fba2b0e14dda271fd321171a64d32398cc798bffe05859d5022100f7dd3649820d5389fdf7da17f92ee11e61dc6bdbac7ccae3075f9ca5963d6be0007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016c2fb27ce30000040300473045022100d054cdf6bb47ea327bcf6e41a8c6ea394401aa52d5768441c7448e66d72bb3f402200fa8d95ebc73b60cb901151bd1358b010e774c5e7e63f942c420e2df2d54f0d8 . . . . [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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