www.contrera.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:e3:70:37:85:cd:4c:77:b0:a3:b6:57:da:50:57:b8:f5:19 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:e3:70:37:85:cd:4c:77:b0:a3:b6:57:da:50:57:b8:f5:19Serial Number (int): 338730116912014817297514301399963375564057
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 0f:14:8c:fb:89:bb:13:1f:c2:90:77:3c:b1:94:fa:f0:2b:80:d1:c5
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 50:39:f0:fb:aa:34:35:20:7c:2f:b9:ae:7e:dd:cb:42:24:31:36:28
Fingerprint (sha256): a2:f1:c2:82:b6:47:79:cc:92:9e:af:1d:c6:f5:b6:43:b4:27:3d:20:81:5d:2b:eb:aa:f2:fb:14:c6:54:5d:1d
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----- MIIGWjCCBUKgAwIBAgISA+NwN4XNTHewo7ZX2lBXuPUZMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA1MjUxNDMxNThaFw0x OTA4MjMxNDMxNThaMBsxGTAXBgNVBAMTEHd3dy5jb250cmVyYS5jb20wggIiMA0G CSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQCajQsx3SlqJ3WVKNtzszfQPvKVamfk 41wpwCZ5WNWbqLtB9tyK4EEAdhLuptdPCW91TMUqFUW9yirzXUxqfmp0EoguANxi npZkhBn/ObDtNC7wO7S76QzPpH/B/D5jM218UQYPJM6MjGGLSmtVQDEITUhQPQbM DpOJdnxTRPOfmV8Bz7GWrCQS5Yy1DxE0GV/BeVuJRMzuwQrdI3nASu0jDWQ96Eq7 +e0pNuBGrtwm2c8M/L4xOXGBuK7khTyepm1CHacaIqUkoB9Mel8CIAhg9MFcOAnf Fowr1U+zURE0xiB35J/ldQeFBLDO55bD7/7CcOWQoYkKOkoqP4Qu1p0jF+/Ohyds lkHoX+HO/K3h6aSoId3k2uwdG+wxc0vRlSCK4uIVKMYtvoanh7s5v2/hkKnUE/Bi Ix7NN6bfm45COlX94DYNa/MV0dWNvgl1+9tVX+dUb2IJCg/3NKn7SQzOzHUDxz/k sidm+7w5gTTdtZASyspNPLIIB30JDfjD+5v6ez5Ox7C+A09tck8ugvj4Y6H1UU8n caUOuGBrxQNkQC3SyBCNtb68f55qpA28yIbwGd+qNbCK/mBIbX8nARWDYaeOBkVw d43BVsRALr4vN8bg6Bp7iaHOWu2IKJLlBC9IkDz1Q7nWi8y7SE9s3r0I01oyiSsT vgUm5DVMKunh9wIDAQABo4ICZzCCAmMwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQW MBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBQP FIz7ibsTH8KQdzyxlPrwK4DRxTAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv 86jsoTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmlu dC14My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0Lmlu dC14My5sZXRzZW5jcnlwdC5vcmcvMBsGA1UdEQQUMBKCEHd3dy5jb250cmVyYS5j b20wTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEF BQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEGBgorBgEEAdZ5AgQC BIH3BIH0APIAdwBvU3asMfAxGdiZAKRRFf93FRwR2QLBACkGjbIImjfZEwAAAWrv nrw4AAAEAwBIMEYCIQCaaaaZdq93Og/9bzUneH6f1jikiJg6/nymrEO1bVGNHgIh AK+D5iZX1fDHNH5l4LTJNsb9CTSpsPioqi3pDq51NR+4AHcAY/Lbzeg7zCzPC3KE J1drM6SNYXePvXWmOLHHaFRL2I0AAAFq75664AAABAMASDBGAiEAyuvUOrBdnktr 0ty9lZWnPwmoydZ7MsX5asyICSf2KI8CIQDyKn62iqliqc5mDCA3gw6r1adB46sP dwwJM8M+vqiNtTANBgkqhkiG9w0BAQsFAAOCAQEAQgjhM5CYZYT6lWj3/J7sF3p9 GObClIhN/3y5G4MQTYDBIBeuTYIBpXSVq/qhgSlpnLsCjkGaY1XQGmtaz8X/8tw9 mG6Bye2tQYTeN2kznxgMjmZNSWuYMdwaJOHbThB1skajqcn4VnpPtk+oLHR064eO eAtzXphh0HbEWlpZm5QDt1X6uR+jAE5R9HHehucmwsiEYkWhsri3wqk+lBA5jmiF CrzdGgdXsYbzR9xWCvgpyGZQvK74T+UTD2qX2wHquSlXSlKVQrtknqyRmeDL8Fnk 4EZIRmHYxPiMTb2so4GRxNmoXhOirQ9qih2245NFh+A2Qs/8/HGv1fDFP3e70A== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAmo0LMd0paid1lSjbc7M3 0D7ylWpn5ONcKcAmeVjVm6i7QfbciuBBAHYS7qbXTwlvdUzFKhVFvcoq811Man5q dBKILgDcYp6WZIQZ/zmw7TQu8Du0u+kMz6R/wfw+YzNtfFEGDyTOjIxhi0prVUAx CE1IUD0GzA6TiXZ8U0Tzn5lfAc+xlqwkEuWMtQ8RNBlfwXlbiUTM7sEK3SN5wErt Iw1kPehKu/ntKTbgRq7cJtnPDPy+MTlxgbiu5IU8nqZtQh2nGiKlJKAfTHpfAiAI YPTBXDgJ3xaMK9VPs1ERNMYgd+Sf5XUHhQSwzueWw+/+wnDlkKGJCjpKKj+ELtad IxfvzocnbJZB6F/hzvyt4emkqCHd5NrsHRvsMXNL0ZUgiuLiFSjGLb6Gp4e7Ob9v 4ZCp1BPwYiMezTem35uOQjpV/eA2DWvzFdHVjb4JdfvbVV/nVG9iCQoP9zSp+0kM zsx1A8c/5LInZvu8OYE03bWQEsrKTTyyCAd9CQ34w/ub+ns+TsewvgNPbXJPLoL4 +GOh9VFPJ3GlDrhga8UDZEAt0sgQjbW+vH+eaqQNvMiG8BnfqjWwiv5gSG1/JwEV g2GnjgZFcHeNwVbEQC6+LzfG4Ogae4mhzlrtiCiS5QQvSJA89UO51ovMu0hPbN69 CNNaMokrE74FJuQ1TCrp4fcCAwEAAQ== -----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 338730116912014817297514301399963375564057 . . . . . . . . [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 2019-05-25 14:31:58 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-23 14:31:58 +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 630512874814345013752360088637797190277859768510342269373630525123411192690042280907115223487552966532835781124392993800719130567374262965982849757342575576726340076416880451799696615091257329968718704817047520607472609943750612439907525318615102880846035788941036831174665409309709179327059760390119943062265178871982434297530398655655141820706673683103314432496054824628023321603544278133993119311577155883297207769377714114546949123576944862143254446660440052322743951711116816701814633648372634519598655659848055145897496274978296877799736157827979700333500338490545758455419088227329989159473366843724717798198114178748214856543800756584832197208277094734664542334171200898563146668600222926902283004002342000494012719485176762712651714949587000310333871583169814202958363321382516558733108343547359645549200991876918706782935286748742587049731534661033440683543593611278181521099483969623522799936815458211791050964978781728211434930754134171862499813057342472018897850315725627709717906204894578667997855428344103189218463743401981534012084277076754885477375065020043272169825482846539927867930349925336088821131828783330779053140043966435878345144219180308426943499406799904872684987119166562520500814128195286276901742174711 . . . . . . . . . . . . . . . . . . . . [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) 0f148cfb89bb131fc290773cb194faf02b80d1c5 . . . . . . . . . . . . . . . . [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 (247 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) 00f20077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016aef9ebc3800000403004830460221009a69a69976af773a0ffd6f3527787e9fd638a488983afe7ca6ac43b56d518d1e022100af83e62657d5f0c7347e65e0b4c936c6fd0934a9b0f8a8aa2de90eae75351fb800770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016aef9ebae00000040300483046022100caebd43ab05d9e4b6bd2dcbd9595a73f09a8c9d67b32c5f96acc880927f6288f022100f22a7eb68aa962a9ce660c2037830eabd5a741e3ab0f770c0933c33ebea88db5 . . . . [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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