contrera.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:8e:17:29:9c:e0:ad:91:f7:0d:53:f9:70:83:47:53:a7:4d 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): 03:8e:17:29:9c:e0:ad:91:f7:0d:53:f9:70:83:47:53:a7:4dSerial Number (int): 309687742207984978685149564583533864003405
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 8d:a7:81:57:fe:4d:dc:ff:70:91:bf:10:85:89:25:fb:55:0a:25:dd
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): a6:dd:d1:1e:79:a5:7f:78:f0:3f:fb:6c:c6:9a:11:ad:6a:a0:1e:e1
Fingerprint (sha256): 8f:be:c7:d2:c9:fb:2c:76:53:2a:2c:db:7d:74:f7:43:c2:ab:b3:a3:17:a2:d4:f6:59:a2:93:cb:8f:82:0a:0d
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----- MIIGUTCCBTmgAwIBAgISA44XKZzgrZH3DVP5cINHU6dNMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA1MjUxNDMyMDdaFw0x OTA4MjMxNDMyMDdaMBcxFTATBgNVBAMTDGNvbnRyZXJhLmNvbTCCAiIwDQYJKoZI hvcNAQEBBQADggIPADCCAgoCggIBAMu+gQeAVPXAEkfMY3W2AXKyc/515ehrqu6w lxyWYYptsthZtPkVClGVcZniqeWgL+qdHiPlbD5NVRVkjPhBBYtjxqRhLMTx/vtJ KLtdl7TPZ9uI4fni/IQ8TlLnTsNipUyc1B0bktXcRFrmt1OGJt6ilK4GhI21JdfM TrFx3Zgi7aos7JiRYrXzhKofosYmdn7aUAWCxPoclGAypuHdmcPcsswS2yC36fgw Bmr5opEavw9iW2HvZuqjIAHZH/Gg/fkayKRKxGjf58RQ2g0rHyOaOy1RzCPxSBTq JNiHf5fJIQ5m7ExFwyGZIJYqF4+zDP26MndL9VweTSlDWNZVKeFzGVemtfcS4vv2 ucnCx+VIfkD6EBetZdxwcQT9WDm+zZUvUUKJD3pVBq5ujwp+6mQsOtzcFO91oV51 eVtnOb8dZDpm7uCakRPgW4ZE11xhbYDR73XHMWyDvCZ1zNWXF3Uyl1IVfIO1o4o9 09vwF5r1VP9T2Mn2j/ivLYn/SvhSTS4M+DR4ii6GAQCHZvbg30oyV7ThCkkxx1f1 Nyldbm7ce2HHdC+PtQEqB2b2Is++wQ81vSuorOZg4/r/zskV2QbFZkzUnqZpDH80 GXX+Qic/iD34frg/cY1NVoQPGQiJR1hnAhUPdKWFtA8/hLwy1qYHHcMRvkxhsTBX InWXpYx9AgMBAAGjggJiMIICXjAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYI KwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFI2ngVf+ Tdz/cJG/EIWJJftVCiXdMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyh MG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgz LmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgz LmxldHNlbmNyeXB0Lm9yZy8wFwYDVR0RBBAwDoIMY29udHJlcmEuY29tMEwGA1Ud IARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0 dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDx AHYAKTxRllTIOWW6qlD8WAfUt2+/WHopctykwwz05UVH9HgAAAFq757eHgAABAMA RzBFAiAkB3vmTLQEsbsQI60/FmTJrZ0do1LvA8xkzH9tNZoGvAIhAI+MLfW8CWZq JZO+Zmc6+t60SRXWJJ2T1ukHvUsCtAlOAHcA4mlLribo6UAJ6IYbtjuD1D7n/nSI +6SPKJMBnd3x2/4AAAFq757gHwAABAMASDBGAiEA5wWExKBW6DNfcVqQgsl7PZQE Q0oke4Fweenl7MCTSzkCIQD3JoRf6qwmeT2trf38+m8hPP8N4vVy6kCvHfC1kswi VDANBgkqhkiG9w0BAQsFAAOCAQEAXVUVYbmGb3vXP/+B06zczCihv1pAlJcINL5e 7C1VEaA06QwjT/4/EK9hJtrih0QF8WXrfsgeKQDeHkUfqvRofd5R8Hewf227cCXL EBUisKHp5Ik6A/dzJLEkdYgWaHlpVqUER6hPNIq55u+foYyoe8z+Iwo5uTuO155K be10uwmP2MDMO1/qzOhdZaVEFkMDA41pz+hEjS3CnALe/48daU0Jsn2UaNsW413p +Bv3V9i9Z32WnxAmdZSqz0tu4LQDvJStJVGRa0mbfzTnZ8A4Pk7zLag/XF6jvWta 5vUVeH1GYv9iTR+f0e7a0XR9holmeroPyV6WJ+fCJq9FK8edkQ== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAy76BB4BU9cASR8xjdbYB crJz/nXl6Guq7rCXHJZhim2y2Fm0+RUKUZVxmeKp5aAv6p0eI+VsPk1VFWSM+EEF i2PGpGEsxPH++0kou12XtM9n24jh+eL8hDxOUudOw2KlTJzUHRuS1dxEWua3U4Ym 3qKUrgaEjbUl18xOsXHdmCLtqizsmJFitfOEqh+ixiZ2ftpQBYLE+hyUYDKm4d2Z w9yyzBLbILfp+DAGavmikRq/D2JbYe9m6qMgAdkf8aD9+RrIpErEaN/nxFDaDSsf I5o7LVHMI/FIFOok2Id/l8khDmbsTEXDIZkglioXj7MM/boyd0v1XB5NKUNY1lUp 4XMZV6a19xLi+/a5ycLH5Uh+QPoQF61l3HBxBP1YOb7NlS9RQokPelUGrm6PCn7q ZCw63NwU73WhXnV5W2c5vx1kOmbu4JqRE+BbhkTXXGFtgNHvdccxbIO8JnXM1ZcX dTKXUhV8g7Wjij3T2/AXmvVU/1PYyfaP+K8tif9K+FJNLgz4NHiKLoYBAIdm9uDf SjJXtOEKSTHHV/U3KV1ubtx7Ycd0L4+1ASoHZvYiz77BDzW9K6is5mDj+v/OyRXZ BsVmTNSepmkMfzQZdf5CJz+IPfh+uD9xjU1WhA8ZCIlHWGcCFQ90pYW0Dz+EvDLW pgcdwxG+TGGxMFcidZeljH0CAwEAAQ== -----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 309687742207984978685149564583533864003405 . . . . . . . . [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 14:32:07 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-23 14:32:07 +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 831203638769126353413985665720895824158843194775451146812634237623054493631699016335747584601318598694357704454752645892633272670282878055881426172701197884955571406923947684423237729137761132518615739159068407063151781444991862889479404694074036383761510377897266235128912559473556518588066570604041615049482712371394974921575162119153822246806263514097068092637716234862171180342722037262863028052655813162951595131116718097147203371392600532692671411633971254388244842464983679024468784835084037731436242568431945339989624570299294256887694203414674435216101149500103655919028415626290130857982625937751109280288000285446905664392120488533010305348974277120934666582478676041621902952608669102244889516491539329468417996766605381244462153565259612102535690868693555368999795970431089217358133070940771260055748361626615157917533220748401774227566280894979939719801712753547281058523554321166609841780987168712643179168635672199811840670475808124636773041259001546022588583651887857813907450361589810433324313527180603410385296994770607170214865349900747368815142195242889018817514618494506998846935863886001205018077308349778673465994116159694739684965400307268081583439944063414094550256954278939769879018864926149920886863793277 . . . . . . . . . . . . . . . . . . . . [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) 8da78157fe4ddcff7091bf10858925fb550a25dd . . . . . . . . . . . . . . . . [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 (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes) 00f1007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016aef9ede1e0000040300473045022024077be64cb404b1bb1023ad3f1664c9ad9d1da352ef03cc64cc7f6d359a06bc0221008f8c2df5bc09666a2593be66673afadeb44915d6249d93d6e907bd4b02b4094e007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016aef9ee01f0000040300483046022100e70584c4a056e8335f715a9082c97b3d9404434a247b817079e9e5ecc0934b39022100f726845feaac26793dadadfdfcfa6f213cff0de2f572ea40af1df0b592cc2254 . . . . [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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