ctgl.uk

Issued by R3

About this certificate

This digital certificate with serial number 03:34:5d:9d:2c:26:b5:40:05:13:be:0a:a6:70:d5:04:86:0c 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): 03:34:5d:9d:2c:26:b5:40:05:13:be:0a:a6:70:d5:04:86:0c
Serial Number (int): 279155975164877114102306588206889007613452
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 3b:85:81:50:6a:10:1b:c1:b6:8d:13:21:83:75:ef:d5:8b:92:2d:fd
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): a8:a8:5d:55:db:93:3e:e9:56:a5:97:43:b4:2d:14:79:ff:22:3b:86
Fingerprint (sha256): 70:f6:4a:b7:49:1f:2c:49:e9:20:c4:96:9c:7b:e9:d2:46:0c:48:5b:af:cd:42:d7:50:ea:8d:16:1b:ff:2f:b0

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6mRzOYXRDm56oWMzXpbX
Oy72+MrqJGkHMIyOFuzu6obgIr4YEx/ark5uCnV6TZRI3D66YDtL1ur1T50eakFy
vZs0LY+uQnj9lwP2QC37+2TI0xAjVFJyggAUcXTlzGM7yPcJLBZKpLHD1BVyCI//
W/6UWksJNni+uF1AItCmPmKPe/j3wNhMCgxqbQzUxFNu5tfAJ1WyHcQV+JZ1X9fn
Va8zYKXc6/hPL6HZg6RLcNA2kECKPfAsikddkda4l60HwP7XmQbdpAe5sIelPCvc
3GfRHi03fVa4fbCrj7GZvlKHExr/uVZ6isa2kjx5V1TQcjbtKJqAULJ7pv70JXeO
DQIDAQAB
-----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 279155975164877114102306588206889007613452
 . . . . . . . . [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 2023-09-16 11:20:11 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-15 11:20:10 +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 29589297150780148287631391182916664192651489757711773552988742895169967396461539387363553581981512708605666068616256638369002652186107186962806415521657280452467639220798217935606806996591818900627957094628806115697817122028816609940398409572266243506556951879193677443915366161247302209659382382942884845902274671567084853087503326273070667775310087596610526108368272758083304739817467961625777212024917207048413557331215610083576075124118290566854435372200079619374878215338765589096269050416602545729322943366929956202799996802082003923667485436384906864958222303894042490274402810339703710450551482917812704873997
 . . . . . . . . . . . . . . . . . . . . [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)
							3b8581506a101bc1b68d13218375efd58b922dfd
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee0075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018a9def29e10000040300463044022019fd3859f0d98c3772d0430700b1d2e6d7b0019958930777040e460ff7431b0f02204caf3d7cbf56924d86b6b4e02a59bb96dffd225d93f122339699789def70e0a5007500adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a0000018a9def2a50000004030046304402204603b1d28a015a765bface55c8533e5239f967e28bb4bee833e7721701c7858e022073ac4323741d252ef7e507eb9f887885a867ab107c1e4e9825b850fbda7cb579
 . . . . [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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