vgbuildersltd.co.uk

Issued by cPanel, Inc. Certification Authority

About this certificate

This digital certificate with serial number 01:d8:c7:72:1c:49:75:11:01:ec:23:9e:2e:c8:41:ee was issued on by cPanel, Inc..

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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=vgbuildersltd.co.uk

cPanel, Inc.

Organization: cPanel, Inc.
State / Province: TX
Locality: Houston
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 01:d8:c7:72:1c:49:75:11:01:ec:23:9e:2e:c8:41:ee
Serial Number (int): 2454809357504476639656445140846264814
Serial Number lenght: 121 bits, 16 octets

SubjectKeyId: 14:85:b2:3d:8c:35:e9:d9:ad:0c:53:21:9a:3f:1d:17:65:1a:39:1d
AuthorityKeyId: 7e:03:5a:65:41:6b:a7:7e:0a:e1:b8:9d:08:ea:1d:8e:1d:6a:c7:65

Fingerprint (sha1): c5:e2:ba:1b:fd:0e:db:ce:a9:79:3a:5d:ef:27:08:f5:3f:52:b1:63
Fingerprint (sha256): 90:36:92:1a:6b:ff:4f:6c:e1:4c:cd:05:df:fe:b2:eb:ee:84:f9:0a:46:69:73:92:41:dc:41:ea:c9:e5:fe:3e

Issuing Certificate URL: http://crt.comodoca.com/cPanelIncCertificationAuthority.crt

Revocation information

OCSP Server: http://ocsp.comodoca.com
CRL Distribution Point: http://crl.comodoca.com/cPanelIncCertificationAuthority.crl

Check the revocation status for certificate vgbuildersltd.co.uk

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for vgbuildersltd.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

vgbuildersltd.co.uk
www.vgbuildersltd.co.uk

Other certificates including the domain name vgbuildersltd.co.uk

(limited to 100 certificates)
www.vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
*.vgbuildersltd.co.uk
*.vgbuildersltd.co.uk
vgbuildersltd.co.uk
*.vgbuildersltd.co.uk
vgbuildersltd.co.uk
*.vgbuildersltd.co.uk
*.vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
www.vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk
*.vgbuildersltd.co.uk
vgbuildersltd.co.uk
vgbuildersltd.co.uk

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAz8hTHnOL7cP7WTLOXZju
xr5Yti4Ic/RP74O6qr+tKOcAYw7bHeWm/oFXmLVFDu3rXpQD5Hk++fVKp8IqbImw
2p4w0TeH+wuXpW/goeDlSZ49CX24icLBG9Cxe9oBplqM8RHgThZ1IP2L5YI8RbwC
/15E4qwwAIfmiCGHE62HzWfthchf6fbA+mSww2uPZjeJRwB3zyD/6IhhF8pdZqxM
jTVJhacEMb9W7nKbFZI2IQlAZHzLgk4/0VVu6qcWKJypWBZuMYsJ/6vg42MsahU6
6zAlg18qa89lrMkMQq1cfQiGSokPApsKGdWiyEz6GF5vEbwRxtyKH/yFAMTGoMQP
LwIDAQAB
-----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 2454809357504476639656445140846264814
 . . . . . . . . [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 2.5.4.8 (stateOrProvinceName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'TX'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.7 (localityName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Houston'
 . . . . . . . . . . . . [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 'cPanel, Inc.'
 . . . . . . . . . . . . [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 'cPanel, Inc. Certification Authority'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-04-21 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-07-20 23:59:59 +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 'vgbuildersltd.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 26230112911081078288054565001451154469922175463388249790602939695480946131552932758035645647404645983814493733278144424391685767678291804522801327291025297690876931258171423943239893752717282396734527047918366696396399346708864009635385805888340243505572766846641452843126850447257124309031321453365229881734243183070077114953993098921919049635165795151551838420013887117595383415884953181401034532832406161431210413067456815158760844343770922744776104207840856040196928234506289732257344448558362528845198277747368745115675829206755292972683967047586103227717011293470449241382677120397607639812008942286649216470831
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 7e035a65416ba77e0ae1b89d08ea1d8e1d6ac765
 . . . . . . . . . . . . . . . . [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)
							1485b23d8c35e9d9ad0c53219a3f1d17651a391d
 . . . . . . . . . . . . . . . . [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 2.5.29.19 (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 2.5.29.37 (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 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (72 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.6449.1.2.2.52
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 'https://secure.comodo.com/CPS'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 2.5.29.31 (cRLDistributionPoints)
 . . . . . . . . . . . . . . . . . . . . [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:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crl.comodoca.com/cPanelIncCertificationAuthority.crl'
 . . . . . . . . . . . . . . . . [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 (113 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 (caIssuers)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crt.comodoca.com/cPanelIncCertificationAuthority.crt'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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.comodoca.com'
 . . . . . . . . . . . . . . . . [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 (48 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'vgbuildersltd.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.vgbuildersltd.co.uk'
 . . . . [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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