contrera.com
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:4f:c6:cf:ca:94:76:0a:3d:fd:82:1d:47:15:b1:cf:66:a7 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): 03:4f:c6:cf:ca:94:76:0a:3d:fd:82:1d:47:15:b1:cf:66:a7Serial Number (int): 288483430839459048208538772004828500420263
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 15:60:2f:fb:f6:7c:d1:68:06:7d:1f:0f:a1:ff:1c:fe:cb:2d:e3:9d
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): f6:95:d3:44:3d:f0:8a:b8:95:7c:3c:b2:65:7c:6a:20:49:56:a2:d8
Fingerprint (sha256): 24:90:d3:cd:54:a8:38:51:7b:5c:7e:f7:bb:75:b4:9d:89:bd:e9:12:65:99:45:d0:b7:82:7a:b1:44:26:eb:97
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----- MIIGTzCCBTegAwIBAgISA0/Gz8qUdgo9/YIdRxWxz2anMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAyMDkyMjU4MjJaFw0y MDA1MDkyMjU4MjJaMBcxFTATBgNVBAMTDGNvbnRyZXJhLmNvbTCCAiIwDQYJKoZI hvcNAQEBBQADggIPADCCAgoCggIBAPZE/DJRI+T/AqBt28AGfsxJOZo4PS9CJvSf GD+Zi/bfSnDkG0gZSNvUxyZQBFukJ82+gTHkkRUfAvT6Atz6Vx6nKYx1MRJxJfJE IihLfpkSppObzoYScLWOR2Osq16fTb8NbSRptG4pC1ACZqhOHwXDtCjjRMU05d9/ oSsIMOZ7fQ/x4EdFem6wmIwM41usFWjwxgP6iqVL7c8cZLwqMW6xcvDp9365lK9x CQlNPcbdjhDH3IDn4orz8Cc35A7jqZHW1kYq2oNRcrGh/Cq0vl/mAaVhA/Mqn0oj U4dKlSjL5feKjm6dqj4OkY9+RrPjyCKb+mmS4Q7PAjUVP9LMUc0S6oqcAO10Dv/N JO6eRig5Dd4/y7aUwuu3mpcpH54XkZA6bXs51iu7DJ4NdXloi2qdWsAZZa1KbY8D 47QWxgJyERDP4OuGV8kMhCN9gGq9o/bcrS4FfkETgKNItxglgoAlxWSv8aKbYRhH FNUMTLHkmwUoy5VXNjzY0wcoWwWa9ckgfTNlrnNEXProyd5NSiGfwh5AFiEAlv6T hBRfWcW+PigOsBshrtNq0CK+2JfqvL3kJSG4ctC/Yq+/2zmlYsbFatTdS9hLz3Mr Wz51K22dk7Of4TltgUm32jCuN6gTqahkS0FAfHpNkdUgkrtcX++aqvVotf8Em2KU knRtDcCdAgMBAAGjggJgMIICXDAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYI KwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFBVgL/v2 fNFoBn0fD6H/HP7LLeOdMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyh MG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgz LmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgz LmxldHNlbmNyeXB0Lm9yZy8wFwYDVR0RBBAwDoIMY29udHJlcmEuY29tMEwGA1Ud IARFMEMwCAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0 dHA6Ly9jcHMubGV0c2VuY3J5cHQub3JnMIIBAwYKKwYBBAHWeQIEAgSB9ASB8QDv AHUA8JWkWfIA0YJAEC0vk4iOrUv+HUfjmeHQNKawqKqOsnMAAAFwLGPMlwAABAMA RjBEAiBB4YmYkxxWSOukEipl16SAyvT6mm6+hvsOOgTdsavwRAIgI1Ey+xGEAGKv Jrf+PG9kx2rrCY4qgcS/JYn5JgFv32kAdgCyHgXMi6LNiiBOh2b5K7mKJSBna9r6 cOeySVMt74uQXgAAAXAsY8yDAAAEAwBHMEUCIQC2oMz5vtNDjhs12fopiB+iwSpX 3+hfyqIbZdRdy7K44QIgaYhCgdQti3DQ4EZiIfp++HO7CeVbrAh9/yLjITgsc68w DQYJKoZIhvcNAQELBQADggEBADCvPM3tvyEcZHO0oMUrCvyk9AY40PKiLSnPQ78A BhoJd1/gNgw3Yqvd1V25/A1fbEhp3UOyuS1Zb7DHAwJymIWXpJwVNcT0TY7zlx7H 5fp8odRn/ZnCt7XRMQtPNSDnSwfDew90CCyjHfo3+fak699mF3xJG8Bievz4l1tR luqQ75aqsRzDFZqzrYXVDMBNse8hya36Y36rgTcKreMN65XmxWCzoErZosgrDWEu LkP2nN0yEJp/VAmP4+NBSXUYzB3Di4ODiDZAqamTaF/wb/l+XwjQdM6Y93JjrG1v sopLSUysUqvGGzPo+5C8x4C4/3eUUf6QbYXEsSWBOlmmJgg= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA9kT8MlEj5P8CoG3bwAZ+ zEk5mjg9L0Im9J8YP5mL9t9KcOQbSBlI29THJlAEW6Qnzb6BMeSRFR8C9PoC3PpX HqcpjHUxEnEl8kQiKEt+mRKmk5vOhhJwtY5HY6yrXp9Nvw1tJGm0bikLUAJmqE4f BcO0KONExTTl33+hKwgw5nt9D/HgR0V6brCYjAzjW6wVaPDGA/qKpUvtzxxkvCox brFy8On3frmUr3EJCU09xt2OEMfcgOfiivPwJzfkDuOpkdbWRirag1FysaH8KrS+ X+YBpWED8yqfSiNTh0qVKMvl94qObp2qPg6Rj35Gs+PIIpv6aZLhDs8CNRU/0sxR zRLqipwA7XQO/80k7p5GKDkN3j/LtpTC67ealykfnheRkDpteznWK7sMng11eWiL ap1awBllrUptjwPjtBbGAnIREM/g64ZXyQyEI32Aar2j9tytLgV+QROAo0i3GCWC gCXFZK/xopthGEcU1QxMseSbBSjLlVc2PNjTByhbBZr1ySB9M2Wuc0Rc+ujJ3k1K IZ/CHkAWIQCW/pOEFF9Zxb4+KA6wGyGu02rQIr7Yl+q8veQlIbhy0L9ir7/bOaVi xsVq1N1L2EvPcytbPnUrbZ2Ts5/hOW2BSbfaMK43qBOpqGRLQUB8ek2R1SCSu1xf 75qq9Wi1/wSbYpSSdG0NwJ0CAwEAAQ== -----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 288483430839459048208538772004828500420263 . . . . . . . . [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 2020-02-09 22:58:22 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-09 22:58:22 +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 1004691795531805767005576967043097362308968776774762041981859683529470840090165007386726821154541726327978900561889555380629988135553913796542030196492146836373308681530563094125083117708654990395989620141110611044347509582745171079087522628533392811175057184911864297090985758253452060144727409622299557233298512431431043332593447993991684392634032571801820446094308832653187226652022051308704555540907052740447384701143537999732854103639949624964038779715402995434514833785380037336196843161677299831965118019077278544364693655729379861671813104530820789328682244350491967971907835164304376059703594213315988416198939193725470446070627254933179620577379094540138255494029129040720171591685268093797556719904274996553158019098898358282527387382868042712261677129771014769458119418695774051599840975859730943547094787511509521314367528957143453886154096902583617785922165885340963706913887527167001553595743802158446920534815736027844713752890456020165490555357338880431386663517782776717086232350932933080811907120994552326416310124467869682033801027419317719361459779172620873548829369972624653056483712882194809427299927906847126173767626177640885445286370262567390185294807843684402576791512815926348885636885014208236651644043421 . . . . . . . . . . . . . . . . . . . . [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) 15602ffbf67cd168067d1f0fa1ff1cfecb2de39d . . . . . . . . . . . . . . . . [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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007500f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb273000001702c63cc970000040300463044022041e18998931c5648eba4122a65d7a480caf4fa9a6ebe86fb0e3a04ddb1abf0440220235132fb11840062af26b7fe3c6f64c76aeb098e2a81c4bf2589f926016fdf69007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e000001702c63cc830000040300473045022100b6a0ccf9bed3438e1b35d9fa29881fa2c12a57dfe85fcaa21b65d45dcbb2b8e1022069884281d42d8b70d0e0466221fa7ef873bb09e55bac087dff22e321382c73af . . . . [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) 0030af3ccdedbf211c6473b4a0c52b0afca4f40638d0f2a22d29cf43bf00061a09775fe0360c3762abddd55db9fc0d5f6c4869dd43b2b92d596fb0c7030272988597a49c1535c4f44d8ef3971ec7e5fa7ca1d467fd99c2b7b5d1310b4f3520e74b07c37b0f74082ca31dfa37f9f6a4ebdf66177c491bc0627afcf8975b5196ea90ef96aab11cc3159ab3ad85d50cc04db1ef21c9adfa637eab81370aade30deb95e6c560b3a04ad9a2c82b0d612e2e43f69cdd32109a7f54098fe3e341497518cc1dc38b8383883640a9a993685ff06ff97e5f08d074ce98f77263ac6d6fb28a4b494cac52abc61b33e8fb90bcc780b8ff779451fe906d85c4b125813a59a62608