www.contrera.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:47:09:c5:c3:a7:b1:36:0b:17:5c:f0:6b:32:6a:3c:88:15 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): 04:47:09:c5:c3:a7:b1:36:0b:17:5c:f0:6b:32:6a:3c:88:15Serial Number (int): 372622181681226633129361667619852723718165
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 79:5d:79:d8:f3:60:0d:c4:7c:69:64:fa:cf:3a:3f:f9:9b:98:97:e1
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): b3:ec:e8:82:81:63:d3:a1:17:2d:44:d9:bc:4f:43:23:b2:51:a4:08
Fingerprint (sha256): f8:76:6d:2f:cf:6b:72:a1:79:a8:42:b7:6a:b5:5f:ab:73:0f:d8:60:ba:4e:69:14:c1:cd:a4:94:bf:3d:5b:26
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----- MIIGWTCCBUGgAwIBAgISBEcJxcOnsTYLF1zwazJqPIgVMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAyMDYwOTA0NTVaFw0y MDA1MDYwOTA0NTVaMBsxGTAXBgNVBAMTEHd3dy5jb250cmVyYS5jb20wggIiMA0G CSqGSIb3DQEBAQUAA4ICDwAwggIKAoICAQDLNyoqfep9gYBfLLJseXd0FN08ccKr PKxzT7J4doC2f7gfQWqkpkMZNaGmLhgwmNCfd7Em4Nkz7Sc2HjyRG/833KSrzwXZ Si026w7k07zKK+V4g/VHv/xNRFVJc61zeFFN4XerpYCfPTa45GpI2mmwDTbL3Yfx 7JIH9pNfYWY0D9L0nItEY6E5D2+M7UZfg7nDG/I5l0b9sCzPLvE0M50YyM/5mkZY 1w25pWvA7gdRHrdpcjv/Z1U71DLXUROHYN1pQzr0ForOTPBv+UL0yZoUChsVzH4K NlBeEVd135/odSBv5gKG+raf9/h4q+txMsaGk9QVTkVweHHG15pC1KOOJkN6XB6Y u1ybpdsXG7Sh05pWydTmPaU35IJK8Sb6Beg3RkUlsYYkiRVgqh/44UhR6s66krbx LhCBmTExVMqmhOotansLBLlzMWwPVETU2rle1PWEEy9XIASq3XVhVrXYjwqFcccp tuM1GmU+HyueCBz/ke/QgtHM5iYUBBER9WepRM4AmiZzJHXPZGaV2FthEqtkxLPY odsNh2IYrEeTXONh0z+JShx0SgBjaEnJjtf24SVBhyiaDKRDYryiV3HbVN3+EmtW b2KNv3z84gOWtZ7qVfzVA5kXfSVrEsyM2wQyquJBYR/xfnJ3KGTYTmfIHOe2lQaW JJc7r5sTNKmB7QIDAQABo4ICZjCCAmIwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQW MBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBR5 XXnY82ANxHxpZPrPOj/5m5iX4TAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv 86jsoTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmlu dC14My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0Lmlu dC14My5sZXRzZW5jcnlwdC5vcmcvMBsGA1UdEQQUMBKCEHd3dy5jb250cmVyYS5j b20wTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEF BQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEFBgorBgEEAdZ5AgQC BIH2BIHzAPEAdwDwlaRZ8gDRgkAQLS+TiI6tS/4dR+OZ4dA0prCoqo6ycwAAAXAZ 9aysAAAEAwBIMEYCIQD+GXQSIHO+Gp1PjDL7FuE3UiPxUji7EJHbeHfYsiM9NwIh AOiQqVZFjxqC7I2qxDSle6AGqpY8VR7/vSGCzCrNhC2nAHYAsh4FzIuizYogTodm +Su5iiUgZ2va+nDnsklTLe+LkF4AAAFwGfWsqAAABAMARzBFAiEAiKdwUDb1YUdw AnAGH2Dda6uyFhVlNixTL/imkB1lT+kCIH4BxJ4bNaqAs38NzEo8zdBU3VUICzgj ZEKuWB8iJsjAMA0GCSqGSIb3DQEBCwUAA4IBAQBTYlr7r99/4UmRFQi5eqseZq5b U2OFeiuunt2DTCi6WPsWw2+FwrivrrKuE52KPapo/SVofKCN+QmZCxTEIirxbr98 tks6G/lAyPYYuia95vH2/ZwRKBr9LZ19/XI+75lgGSDWb14flZk4PmjywerOHCG+ uEeDfA+pl41nX/3z35jCB7y1ZRJ8/niecegVBIKuLWn1pOhIbVsb2vpxdt/YIgmp Lju3wj60+Lql3Vo4VqZkHNgro6Pkl077DMhazcW0SGi1n0oE2kGpCMvSZ+aXNjfE x/EJsFiZmoebNzpdmaUlpYbXjVInyRB6xCCeV/fvqGc+3o/wieDhY7c6dm99 -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyzcqKn3qfYGAXyyybHl3 dBTdPHHCqzysc0+yeHaAtn+4H0FqpKZDGTWhpi4YMJjQn3exJuDZM+0nNh48kRv/ N9ykq88F2UotNusO5NO8yivleIP1R7/8TURVSXOtc3hRTeF3q6WAnz02uORqSNpp sA02y92H8eySB/aTX2FmNA/S9JyLRGOhOQ9vjO1GX4O5wxvyOZdG/bAszy7xNDOd GMjP+ZpGWNcNuaVrwO4HUR63aXI7/2dVO9Qy11ETh2DdaUM69BaKzkzwb/lC9Mma FAobFcx+CjZQXhFXdd+f6HUgb+YChvq2n/f4eKvrcTLGhpPUFU5FcHhxxteaQtSj jiZDelwemLtcm6XbFxu0odOaVsnU5j2lN+SCSvEm+gXoN0ZFJbGGJIkVYKof+OFI UerOupK28S4QgZkxMVTKpoTqLWp7CwS5czFsD1RE1Nq5XtT1hBMvVyAEqt11YVa1 2I8KhXHHKbbjNRplPh8rnggc/5Hv0ILRzOYmFAQREfVnqUTOAJomcyR1z2Rmldhb YRKrZMSz2KHbDYdiGKxHk1zjYdM/iUocdEoAY2hJyY7X9uElQYcomgykQ2K8oldx 21Td/hJrVm9ijb98/OIDlrWe6lX81QOZF30laxLMjNsEMqriQWEf8X5ydyhk2E5n yBzntpUGliSXO6+bEzSpge0CAwEAAQ== -----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 372622181681226633129361667619852723718165 . . . . . . . . [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 2020-02-06 09:04:55 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-06 09:04:55 +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 829046856688876619596661183231561399087574139012870907741410632155584639644832086307962845330237120630731072906364049067785608112760324521492205033844406670962957177012737215251920580841354680915961890631211504364444737654337739416193901641491731241083308161570805533813832251323597781320609993533046998748016921016229945331452723184610311083360487844233212026692209936446402505215777871864786813056721628636414672112603852648729701774768695916092916193980520316433513347148494190793720008693467865263273071915463461644395090030550866710901083206419171036183125283467306393416802377541402478723043873244142300630963845887323525334034469440692401615736364849552135931812803182832638450872928599654274300697751945876738180434930145275603454490661096796471023073117806320520764069782503676032752447285893440030288800203898837688068325749839671155331056176686115665046428195099259748442189696849655366820263701373572056180808599924750746416871435708909726570741817388120694400185617383517162513943335970254960125762596617595943779106865275792817579394194555216187852016999541758019249452047506831717907892272266050511570888663991723542115755090310637339356358582512094894886784233764488560664659083644727445723652048124352187197446259181 . . . . . . . . . . . . . . . . . . . . [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) 795d79d8f3600dc47c6964facf3a3ff99b9897e1 . . . . . . . . . . . . . . . . [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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f1007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000017019f5acac0000040300483046022100fe1974122073be1a9d4f8c32fb16e1375223f15238bb1091db7877d8b2233d37022100e890a956458f1a82ec8daac434a57ba006aa963c551effbd2182cc2acd842da7007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000017019f5aca8000004030047304502210088a7705036f56147700270061f60dd6babb2161565362c532ff8a6901d654fe902207e01c49e1b35aa80b37f0dcc4a3ccdd054dd55080b38236442ae581f2226c8c0 . . . . [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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