greymatterlearning.co.uk

Issued by GTS CA 1P5

About this certificate

This digital certificate with serial number c8:f8:62:a6:f2:07:b7:f8:11:e2:c1:35:18:0f:47:56 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 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=greymatterlearning.co.uk

Google Trust Services LLC

Organization: Google Trust Services LLC
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): c8:f8:62:a6:f2:07:b7:f8:11:e2:c1:35:18:0f:47:56
Serial Number (int): 267135289680820650690869071842462615382
Serial Number lenght: 128 bits, 16 octets

SubjectKeyId: 77:74:24:2b:1e:6e:26:1e:6b:ed:12:ba:75:bf:e6:28:66:3e:72:02
AuthorityKeyId: d5:fc:9e:0d:df:1e:ca:dd:08:97:97:6e:2b:c5:5f:c5:2b:f5:ec:b8

Fingerprint (sha1): 14:dc:db:07:53:79:5a:c8:bc:d0:f0:3b:39:a2:66:a2:f9:2f:81:d5
Fingerprint (sha256): bf:a4:26:6e:32:04:00:a4:3d:62:69:9a:b1:b2:64:a8:5d:4e:4c:0b:26:1c:7a:fe:80:ec:9f:2d:48:64:b8:12

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

Revocation information

OCSP Server: http://ocsp.pki.goog/s/gts1p5/doKIxJq5hRw
CRL Distribution Point: http://crls.pki.goog/gts1p5/oE9rr3G5TqE.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

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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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApXgSbFO0QDagX+6XO62f
Y8O+IMWDrOkzjuyRC+bzxvJ2K3a1I95G1/JKPhbJyLdinqIpn5P+7+mY1L4LBVaK
Eeue7XL24whyKVPuRKkGTnAnTon+CCuNWCF3ZTjLgNpFT87jqNIPQBZxiRJk+1AR
ToYpTu3omT+SZzvPBCQ9bUqJtk0qus59k3WLlSmnUmQbBFh/uR7RYrmCebUAbtSG
Y7Qu2HWnSz/RPnzmqt1PlEQlur/wn6vuP/UXn3aTvA5z3OEaHc+/PizFDi27Z1tN
vjU4behG1heeBZpSO5Ym10+mtG26RF0JRZlQmlJZtxRt8/yLarmOasMIu4kHmnc7
MwIDAQAB
-----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 267135289680820650690869071842462615382
 . . . . . . . . [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 2023-06-19 08:58:15 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-09-17 08:58:14 +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 20888530012332810481034408096825628185374080621635772759794737211324737518977528709196630306036085139127033155456315763050983085307546830247422783234380973596457872641126704704356472732272510747085410917948554859579723512117912366928166102750744362422469599952512511049150273912491243123238470559819532291108802152058302829698970482718932688406499422066634102590231116375890170762703596513942449596223394518316063000918334302233331437010800744265347957248544919414849015713959804872439715705265570972537083740537805677072370732048297486723053049040252024839212239263913579920744098601666947689724716441621133595720499
 . . . . . . . . . . . . . . . . . . . . [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)
							7774242b1e6e261e6bed12ba75bfe628663e7202
 . . . . . . . . . . . . . . . . [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/doKIxJq5hRw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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/oE9rr3G5TqE.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)
							00f1007700e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e00000188d3173e0c0000040300483046022100e38309ebc63187e38d4ad9738385df5631fc479d7bdd524d477b2744f7bf62e9022100eed7aae11f415d526d4cf88b90d6e2f1f1a5df58e9eaf7fa298f4666034d51990076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000188d3173e43000004030047304502200b0c29525b663647e7a03262dc278db8c0fc1062abda6aef2d6add640b4797d5022100cf23f137fb72126d89f0256edfd4a02affb6e94114a41f9416b6de1779a7c2d5
 . . . . [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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