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:24
Serial 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.org

Check 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-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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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