ctgl.uk

Issued by R3

About this certificate

This digital certificate with serial number 04:e3:73:17:ba:ab:a0:02:43:19:5e:b9:b9:52:bd:48:ac:cb was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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=ctgl.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:e3:73:17:ba:ab:a0:02:43:19:5e:b9:b9:52:bd:48:ac:cb
Serial Number (int): 425846225446562751824540531578013152226507
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 2c:b4:ac:7d:c7:cd:49:87:4b:69:bc:91:48:ce:35:d1:a3:06:7b:76
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 85:cc:80:09:87:fa:b4:ee:b2:25:11:6d:7f:d8:e4:c4:5d:64:d8:c9
Fingerprint (sha256): b4:d1:6c:d2:e8:17:f8:47:44:e7:65:90:75:d1:25:0f:6c:86:77:65:9e:e3:20:13:f7:54:70:cb:ba:ad:c3:74

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

Revocation information

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

Check the revocation status for certificate ctgl.uk

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for ctgl.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

ctgl.uk
link.crm.team

Other certificates including the domain name ctgl.uk

(limited to 100 certificates)
ctgl.uk
ctgl.uk
ctgl.uk

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAs60zybCmkZqxEAQle3Pm
7VuOSp37t0jXMzgla6QTUeFVKvnPfn91U0rauvElgTzKz8yeORN+YpN+Dp9LGJpI
KYZwR1aP8LgQokfJ0EDw8wf8Gsj4jJUcBaXgXRoVI5c/1iJi5670237CnOqUYsO+
Y1wyF+8tvUtk7hyC6FJawmBdpambvvIUGRRyFHHzPZxz2ujz40QGGcLcGFZXd/S0
47TkTIv/pK4IpukYRtgF940FNOU4/xOPpcEdU69OcQ/lFN5+sY4wq9bPbiU8BMH9
KzedtUIBBJUJL42mER/st9yYI1nJhY32uXVa9f1FJiEtvKhBhSgXw5DaSF2dK78i
8wIDAQAB
-----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 425846225446562751824540531578013152226507
 . . . . . . . . [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 2024-01-14 11:10:33 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-13 11:10:32 +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 'ctgl.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 22682065824473755172183502467888985244295419710339396076152481657748065904569814633005560511205386359836313868490622141517975046627208107481506911354993612209222153360841170338353352353293468092234380163277280671666996124546727795720116500299789857791063656893555250797804533835754485234719248957533470059483828140067960910709162733568665234457836544005071535313626484199377302800302030862521444120923310414717409420040330938762875527574293520270024174517515258880593429329723094181475340091103005442073132633029129131608789167358660386885718369613534414264988992508502172394531958223202594620401167707633282000560883
 . . . . . . . . . . . . . . . . . . . . [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)
							2cb4ac7dc7cd49874b69bc9148ce35d1a3067b76
 . . . . . . . . . . . . . . . . [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 (26 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ctgl.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'link.crm.team'
 . . . . . . . . . . . . . . . . [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)
							00f000760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018d07e178450000040300473045022000d7da5f476c84bc11e6a514389593f824560393535519fe482b662332b5e02602210080a0d805ea78dd71303085e65b0e4db9c215201b5bd9e93290fb2c4974e34a4d0076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018d07e178430000040300473045022100a3f70582ab9d41ca8dbae0c57c45607b4e15bfcbac8468e65f92d7f0034262e2022050133bf7496c0ec294a9a76b302d93f21654884ef935a78d7660f41b097621cd
 . . . . [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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