colinbarker.co.uk

Issued by R3

About this certificate

This digital certificate with serial number 03:8a:fa:7c:46:d1:16:61:d5:dd:9c:af:bc:c6:85:79:eb:7d 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=colinbarker.co.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:8a:fa:7c:46:d1:16:61:d5:dd:9c:af:bc:c6:85:79:eb:7d
Serial Number (int): 308628776710461220351740114065572987792253
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 6e:fb:6e:2d:1e:5b:60:f1:d9:02:b5:02:10:ac:e4:63:f1:8d:57:b3
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 08:be:ec:6d:ca:0b:5c:fe:b3:0d:bc:84:69:db:20:19:2d:80:d3:90
Fingerprint (sha256): 6f:2d:d8:0f:21:ae:7c:df:f9:c5:55:91:34:42:ae:00:02:b5:b0:90:78:73:50:17:74:85:57:69:a6:69:e0:36

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate colinbarker.co.uk

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for colinbarker.co.uk

Public Key Algorithm

RSA

Key Size

2048

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

colinbarker.co.uk

Other certificates including the domain name colinbarker.co.uk

(limited to 100 certificates)
www.colinbarker.co.uk
www.colinbarker.co.uk
colinbarker.co.uk
www.colinbarker.co.uk
colinbarker.co.uk
www.colinbarker.co.uk
www.colinbarker.co.uk
colinbarker.co.uk
colinbarker.co.uk
colinbarker.co.uk
www.colinbarker.co.uk
colinbarker.co.uk
www.colinbarker.co.uk
colinbarker.co.uk
www.colinbarker.co.uk
colinbarker.co.uk
colinbarker.co.uk
www.colinbarker.co.uk
www.colinbarker.co.uk
colinbarker.co.uk
www.colinbarker.co.uk
colinbarker.co.uk
www.colinbarker.co.uk
www.colinbarker.co.uk
colinbarker.co.uk
colinbarker.co.uk
colinbarker.co.uk

Certificate

The complete raw certificate details for colinbarker.co.uk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtWmOCXMPl4/HCoXz29t3
2SEo9cVgN4vi1w9+hWQq4l1nhhSTDAG3UeFbbvYBGiNLYGPUaHj57txC/7vvIQv0
iqSQ+zObT8+esNzK6irMpKzqANNozUOSw406hkEnbLYMCNG+8KMfp0DVaJtw2kPl
bIOV6fSOzLizzsRhl8oSohnGoplnfowR6S7bMh1gg2bWQE5dWrcOxKlfCxg3k5wN
b4gRI42LPpMMxwjaSU87Y5DDQK+Q3ZvDFj8SFvDwB9pzVwQE+S1L1l+rjriYKViZ
bm6OaGYTgGQccK+N8Nx8NqLsDUoa3gn4pFBiX9oTruIXJ1iMKaumFJmwpibX/KXO
5QIDAQAB
-----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 308628776710461220351740114065572987792253
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-20 19:04:35 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-19 19:04:34 +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 'colinbarker.co.uk'
 . . . . . . . . [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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 22901184226329962488037317358406563157755077933686011099463251686115598590653662470293684461374959173608401925074091921443498040197993847967708647195312470607075581046377705278340869481539613180865294941533510755423585647191951199485387657534985030785564818088572278738436555472746977449544690757330032391321686906088029060604343597182568207926611230026112702061539753594207001156600991199758946648203812024401525107965889823854385956502756097315591106209606621891159844485086712574179086834665412742944226207256006413489410517231199493912555355387172455852264136486014508438721730418629172902122022715628031146577637
 . . . . . . . . . . . . . . . . . . . . [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)
							6efb6e2d1e5b60f1d902b50210ace463f18d57b3
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (21 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'colinbarker.co.uk'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f000760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018c88d47bec0000040300473045022100a3498e18c68d536fce8e32a841c3952025e7a2f99f9605f57a95d79df184dae502206e2d71ab08a81d16ddf856531915b5c416f93ec6a90465c4dc83d47f26c7d6cf00760029d03a1bb674aa711cd3035b6557c14f8aa78b4fe8389449eca453f944bd24680000018c88d47da9000004030047304502210084f4ff91e30b21fae88517bba09c584c60e0f8ebf8a2df82c9118fd0c12bf8ba02205209c5d977b1614ce59e30701fa2e3598bb6a5937e4ee342b1f3fcc3c3b219d3
 . . . . [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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