31871.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:e3:17:0d:e7:62:8e:69:f4:78:d9:fd:39:b6:bd:ec:e6:dd 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=31871.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:e3:17:0d:e7:62:8e:69:f4:78:d9:fd:39:b6:bd:ec:e6:dd
Serial Number (int): 338611599523141038496919895288823665190621
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: fc:45:a5:a5:ff:00:9d:c9:32:1d:20:18:72:73:5d:e6:f6:5d:25:5c
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 53:a1:fe:bc:2d:3e:08:25:4b:4a:2a:8b:ad:99:27:02:05:00:e2:ed
Fingerprint (sha256): 1e:cc:13:2b:8a:0c:2f:ce:fb:2c:65:fd:a3:b0:e7:eb:df:fc:83:1b:3d:af:87:f6:e0:88:1f:25:0f:c2:2b:42

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 31871.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for 31871.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

31871.com

Other certificates including the domain name 31871.com

(limited to 100 certificates)
secinaro.com
31871.com
newcastlerealestate.co.uk
31871.com
31871.com
82951.com
31871.com
www.31871.com
www.31871.com
31871.com
www.82351.com
www.31871.com
www.31871.com
31871.com
www.31871.com
31871.com
31871.com

Certificate

The complete raw certificate details for 31871.com in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxnjpHuQi2+EcheYTolVk
lpM5/C3uFav4eNUWgzyOCvefDCLQ1k+CVYM08F56Lb74Jp3Pdsg1eKSXf30BNXGx
1OQHfdFe9Dt1/9TAhTzbHaKrikgJWfb7nFDoQzPg3dSIKfTvAy6hTpCTa9AAcW5n
PbaU6TX2EAQ64n613KhGE9S5L6wcBIH8AGMpXVepzCkaCzOQut8At4uU7NhLq0BU
ZiPrfnIQ2q1Uuvz5t3y/UHJH4WktKWvo/XMKgFWFDJ9el6xXDcMx5RScmi/in9iY
ylavwv9FqR8hopZOvE3tSwzFD2HEBvjVNuF/3RSeXk+5nbPh++4slCctOn/96/ck
gQDvX6uQMd9X6bv6C+Dl3CcoSOXenUXjsEPa0PRqHFUcCk+jVEWDIs50tZp3Fx70
Pv/6MhAs588VFWr2sBiDQKrYGOwaxz7NPfLg0YsqAxzE3gdrdnbjSjlEiMOZBoqk
VvCacAV70+kVFAC7OQLXHs94tgG1h7ZRltd9aKRo2BD4PdwrJJhVkZSAw0+AtryS
9x/+JpRLyVB9HnISPJvnKLt7hZYU/8CVcMTDBwjDD0rEsBfTMwJPE3Y97isq9rfe
0BgYzKysRAQOppI7dCnNSuMjCnfEofEYkIlr9daJ/duYclNdhO2mPb6aqTHRDh01
pTTnZEv0mnJfMg4kJ5/QZeMCAwEAAQ==
-----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 338611599523141038496919895288823665190621
 . . . . . . . . [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 2019-11-07 13:21:57 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-05 13:21:57 +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 '31871.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 809696370486330636755248817908878840019725139387598532817851693978388230643342529840013883399861849301188380899231819068303889560754084524147507405912389710304343039924181294654747837541256895258037583305987669530756741827838575812440901746060316626919658805158872038255126402143635376702613596420490800574589339790809745713719919105028448221103749988238208486687189347690828297236141042884803988713851478667259393837483326436217713360152032345507895680040522944424173656756697156337443760468330723734838001282539085044493639276985352048128737997328896946912038554220385993120679712958667697374643738550215475767118427047694067815958179466775693472818759598821279743687953654827527505971968407968432212533223115797303030278173790828791064134776544831346940425653023336490344414630839564321582338625700699663895182780203522956322953328890903818485566816348151509746733749063367303619135691499305857018660512339342542069326356666303787102624142957971876364385092050671307472159812330676028411398492255984689994545763966413895101221312613809701012647330814760044428906929830712539294651816686797421797479508036933039531358741177916832413161789930153240269689041461870603151542112632770964935807668809453374288504833547480883067326850531
 . . . . . . . . . . . . . . . . . . . . [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)
							fc45a5a5ff009dc9321d201872735de6f65d255c
 . . . . . . . . . . . . . . . . [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 (13 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '31871.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)
							00f000750007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016e463e492800000403004630440220628be262fe7d5d0b6ce6520004df643413a01d2a1bec0f9b7c3d59c836311e5802200765f162c0a007f543bce1808600c01e349fb43b58aa34dc791eae9f21ca97570077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016e463e49de0000040300483046022100d17f6f4c2be439ec565928c100415dd92362b49d12ed1fa3785b63b16909f95f022100c8a119b09a389e132a608942f138d50cf665cab9ce575519207749f324bf08b1
 . . . . [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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