DV SSL/TLS Certificate for www.sfc.co.uk

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the www.sfc.co.uk DV SSL/TLS Certificate

This certificate with serial number 05:35:b8:ea:2e:46:d8:bd:fd:d6:10:a2:13:00:52:91:6f:76 for www.sfc.co.uk was issued on by Let's Encrypt.

With 8 subject alternative names, this certificate can be used to secure multiple FQDNs. This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for www.sfc.co.uk provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • 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)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 05:35:b8:ea:2e:46:d8:bd:fd:d6:10:a2:13:00:52:91:6f:76
Serial Number (int): 453842188992904185058741911113796877905782
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: cb:c6:93:d2:ec:ab:05:48:90:d0:5f:3f:45:49:ac:a1:07:53:13:2a
Authority Key Identifier: c5:cf:46:a4:ea:f4:c3:c0:7a:6c:95:c4:2d:b0:5e:92:2f:26:e3:b9

Fingerprint (SHA-1): 6f:6b:b6:c6:5f:ba:34:e3:99:03:a0:cf:ad:8b:b7:22:1e:bb:3a:e5
Fingerprint (SHA-256): c3:6b:16:51:08:a1:a3:b6:1b:f2:32:76:1c:c1:03:3d:c3:bb:da:a6:f1:2b:f0:9e:dd:a9:41:59:29:bf:2e:d8

Issuing Certificate URL: http://r11.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/119.crl

Check the revocation status for certificate www.sfc.co.uk
8
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for www.sfc.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
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

cpanel.sfc.co.uk
cpcalendars.sfc.co.uk
cpcontacts.sfc.co.uk
mail.sfc.co.uk
sfc.co.uk
webdisk.sfc.co.uk
webmail.sfc.co.uk
www.sfc.co.uk

X.509 Certificate

The complete raw X.509 certificate details for www.sfc.co.uk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAm63cMRBh47N/hrqrNkb+
55tDZtgTsfg+iV9i7XjXuNtCe/1dLZ42mv0jcq8DMwmDDqamJ+SuLe8DS6cvPvyf
3O0Q7DtIva7qjEqKw2GPmxAW9r2d4Tc3hIc2HxqUED8uUcKMLJDkhiVMKpFfwxdl
DAV5VoCiqrTKnmsUBrV8zXAXpCduCj4nHHmsRjo4WifimHfQRP/snCrmh7bC+4i8
nP9cdbiwTMn6SOhFAXTHlyXHCa0BFScwPoQtQUHQ9E5FH6WwYpkLW+qnC9MufyEg
j74dLLTonnzg4YbBNEbxjvgKpo23/4RTohli/2iNTSzJi0ZrACkuFVkhGJTeQKnM
VwIDAQAB
-----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 453842188992904185058741911113796877905782
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R11'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-07-10 18:02:05 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-10-08 18:02:04 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'www.sfc.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
 . . . . . . . . . . . . . . . . [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 19652670892050279599389839887031466784337774117037181942890549372253274511459831938286623182145889771781399356937601086356255773947162680756800385076953625687528303286322006683358674323716993674930601563791389005255432639823599560961160021238064097326852975520997522881686727695751462331261229042288549851596133893295892915709536704151416946010451697542221617948368828404136447947221895871727630678012161076830537033782938943653372601942801354380662058702593231997809887486647621882937025417428061871297812749693129972989436341957099678237569839229417153573928214612367925781863750774925499527377818829463328383421527
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							cbc693d2ecab054890d05f3f4549aca10753132a
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName c5cf46a4eaf4c3c07a6c95c42db05e922f26e3b9
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (146 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cpanel.sfc.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cpcalendars.sfc.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cpcontacts.sfc.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.sfc.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'sfc.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webdisk.sfc.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webmail.sfc.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.sfc.co.uk'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.c.lencr.org/119.crl'
 . . . . . . . . . . . . . . . . [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)
							00f1007600af181a28d68ca3e0a98a4c9c67ab09f8bbbc22baaebcb138a3a19dd3f9b6030d00000197f5b6049f000004030047304502204eba29ec3bbdf74b65febe71b543767b08c1b838a5ab80eb7c3493f9c00bbe2f022100afcab393fd15f8ccce9c5b4392d36f9786e57ad19600794ff346f9baf55e544400770012f14e34bd53724c840619c38f3f7a13f8e7b56287889c6d300584ebe586263a00000197f5b60b870000040300483046022100e2b8f0e7abefe4437f09e6915aba4a408464c79eaf75fa3d16129021580e7100022100c6347b0452fde1cdf9a41a787500a34b10998b93d6ce6addbaf6dc4f0e015630
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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