greymatterlearning.co.uk

Issued by GTS CA 1P5

About this certificate

This digital certificate with serial number ac:36:90:d8:fe:ec:1b:23:13:4f:97:cb:95:8e:0a:60 was issued on by Google Trust Services LLC.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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=greymatterlearning.co.uk

Google Trust Services LLC

Organization: Google Trust Services LLC
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): ac:36:90:d8:fe:ec:1b:23:13:4f:97:cb:95:8e:0a:60
Serial Number (int): 228910537164527066892006707491779775072
Serial Number lenght: 128 bits, 16 octets

SubjectKeyId: 08:a9:21:95:66:13:c8:2c:10:25:af:ad:f6:49:16:50:98:1b:ac:75
AuthorityKeyId: d5:fc:9e:0d:df:1e:ca:dd:08:97:97:6e:2b:c5:5f:c5:2b:f5:ec:b8

Fingerprint (sha1): f7:cb:09:9e:60:c1:31:19:d3:6b:80:ee:a0:2f:fc:4a:ed:dd:e5:a7
Fingerprint (sha256): 6b:ba:7a:3a:c6:62:d4:35:53:06:16:f8:36:a7:54:bd:f9:4e:55:fc:20:35:64:8f:11:34:5d:b1:20:f4:90:1e

Issuing Certificate URL: http://pki.goog/repo/certs/gts1p5.der

Revocation information

OCSP Server: http://ocsp.pki.goog/s/gts1p5/Z3MLakc60lc
CRL Distribution Point: http://crls.pki.goog/gts1p5/ma3POJJf-Vk.crl

Check the revocation status for certificate greymatterlearning.co.uk

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for greymatterlearning.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

Extensions

10 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

greymatterlearning.co.uk
*.greymatterlearning.co.uk

Other certificates including the domain name greymatterlearning.co.uk

(limited to 100 certificates)

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxwM/QX2lYAqEZ/xOaBeT
jV1jNTIx78UWCksgmCaCwToMNBplixOH5cYqQdnxr2hZSP822ljmwhlvuUJfckG+
/Wnb79UVnhXMq7FpbvIkRpRDJ708i1Bcd+nINt8s12xDJNnr742SD1zge3tRESQz
s3IVQaal+JC+myC5KoWvE+a77FgrCgb2aVlHenzIZG+7Zh8Rf1YfTQxOD7ws8BWY
0rpKqQ1gRU/3NWe5Xj6NrfAZnYRu9ZJ5O+mFw9+5W8LHjC1T82Ht1nGZpgiWTGbd
LMW1UQB724atezNa2gQlPIei97HmOo0xTaHI8OjIK7PpGhOQFsYrvaVaApV/D4qf
pQIDAQAB
-----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 228910537164527066892006707491779775072
 . . . . . . . . [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 'Google Trust Services LLC'
 . . . . . . . . . . . . [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 'GTS CA 1P5'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-12 23:47:36 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-11 23:47:35 +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 'greymatterlearning.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 25123023889511324713267301065652721575434129373271888794123606286478743198363748784249458885872046150286139743967496021347583953008178520432715039028295073497930237418370390340700337782280735540660148153073200232118100189433926266320245212876117222695106807411256118662689720044461778248606798911964512717312512806304019594303098407507621703803118636908273290084049922853950310088591235667545447327142328638632835280527266264073162066656654812559289118540145474483460627308251073708791981324032552116956720086001059249308600116831642059315099560320958857290749194796148250385977528537472483404144773392337005827497893
 . . . . . . . . . . . . . . . . . . . . [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 (12 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: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)
							08a921956613c82c1025afadf6491650981bac75
 . . . . . . . . . . . . . . . . [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 d5fc9e0ddf1ecadd0897976e2bc55fc52bf5ecb8
 . . . . . . . . . . . . . . . . [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 (108 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://ocsp.pki.goog/s/gts1p5/Z3MLakc60lc'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://pki.goog/repo/certs/gts1p5.der'
 . . . . . . . . . . . . . . . . [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 (56 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'greymatterlearning.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.greymatterlearning.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 (26 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 1.3.6.1.4.1.11129.2.5.3
 . . . . . . . . . . . . . . . . [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 (53 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://crls.pki.goog/gts1p5/ma3POJJf-Vk.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef00750076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018ed4ec8f2f0000040300463044022040e41f4dfc3e04666addfddb0fd45987d27b5216560ff6678da8d99c8afa185802200e7ec6711b4067ad7f2d3dd5cb878dca59e4a024740d4387355f7ce3ee465d7700760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018ed4ec8f200000040300473045022100b32b6c5c5ef1211210d32a0229b9b23e8489d469ba6287636b86240e46031d7a02200189bed3e32f7df7236729913550a8e241ef29eb2b781ba4777e0fa244c88d15
 . . . . [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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