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:a7:4d
Serial 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.org

Check 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-----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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 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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