think-books.co.uk
Issued by Sectigo RSA Domain Validation Secure Server CA
About this certificate
This digital certificate with serial number 79:ff:60:2a:dc:9a:b0:3e:9c:cd:28:a0:57:14:09:a4 was issued on by Sectigo Limited.
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=think-books.co.uk
Sectigo Limited
Organization:
Sectigo Limited
State / Province:
Greater Manchester
Locality: Salford
Country: GB
Locality: Salford
Country: GB
This certificate has expire since
Certificate Details
Serial Number (hex): 79:ff:60:2a:dc:9a:b0:3e:9c:cd:28:a0:57:14:09:a4Serial Number (int): 162162573696079686854513226072011835812
Serial Number lenght: 127 bits, 16 octets
SubjectKeyId: 6c:75:ff:0b:5e:fb:7b:2e:0b:3e:2c:df:c6:f4:c1:cc:dd:e6:3d:c7
AuthorityKeyId: 8d:8c:5e:c4:54:ad:8a:e1:77:e9:9b:f9:9b:05:e1:b8:01:8d:61:e1
Fingerprint (sha1): 9e:e5:66:a1:49:f6:f8:fa:69:9d:b4:04:82:60:cc:8d:05:ee:ab:75
Fingerprint (sha256): 53:22:54:1a:35:c8:8b:f5:21:33:f6:49:83:ad:8c:94:72:f6:63:7d:14:a4:a7:c5:23:80:6b:10:c2:3c:45:4f
Issuing Certificate URL: http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt
Revocation information
OCSP Server: http://ocsp.sectigo.comCheck the revocation status for certificate think-books.co.uk
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for think-books.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
think-books.co.uk
www.think-books.co.uk
www.think-books.co.uk
Other certificates including the domain name think-books.co.uk
(limited to 100 certificates)
www.think-books.co.uk
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www.think-books.co.uk
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www.think-books.co.uk
Certificate
The complete raw certificate details for think-books.co.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFxzCCBK+gAwIBAgIQef9gKtyasD6czSigVxQJpDANBgkqhkiG9w0BAQsFADCB jzELMAkGA1UEBhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4G A1UEBxMHU2FsZm9yZDEYMBYGA1UEChMPU2VjdGlnbyBMaW1pdGVkMTcwNQYDVQQD Ey5TZWN0aWdvIFJTQSBEb21haW4gVmFsaWRhdGlvbiBTZWN1cmUgU2VydmVyIENB MB4XDTIzMDkyMzAwMDAwMFoXDTIzMTIyMjIzNTk1OVowHDEaMBgGA1UEAxMRdGhp bmstYm9va3MuY28udWswggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCp Q7uaMD2YLpFTWVatsSXX9i8Xnl7hmLEustIPDHu8aNC7O6fVqXLUjHAjwPhF/5B/ ccemwhPkIde2U60CEyimXtJD6YTOgg9DlQWQ87KuvQbO/ucD1GXnFl1N4iwpO2zE lIs09wEBv+lp0JpRHbCcXE8SN3OtLykRrfaXTTiFWHybqbifI8tu9tucK31IXG5b 56KNu6atK5wew/48nL3CSaelctyn3G/jWbsQAnde9eIiFMD8b6lv6en7eiIcYKcA huauJec9Az5tszo+KlopCkJZIotip5TfmJ1bKgvnYBkiQuCWuSsUqB6h91VYbzyp M72dNYGMjkXXQy5O65L5AgMBAAGjggKPMIICizAfBgNVHSMEGDAWgBSNjF7EVK2K 4Xfpm/mbBeG4AY1h4TAdBgNVHQ4EFgQUbHX/C177ey4LPizfxvTBzN3mPccwDgYD VR0PAQH/BAQDAgWgMAwGA1UdEwEB/wQCMAAwHQYDVR0lBBYwFAYIKwYBBQUHAwEG CCsGAQUFBwMCMEkGA1UdIARCMEAwNAYLKwYBBAGyMQECAgcwJTAjBggrBgEFBQcC ARYXaHR0cHM6Ly9zZWN0aWdvLmNvbS9DUFMwCAYGZ4EMAQIBMIGEBggrBgEFBQcB AQR4MHYwTwYIKwYBBQUHMAKGQ2h0dHA6Ly9jcnQuc2VjdGlnby5jb20vU2VjdGln b1JTQURvbWFpblZhbGlkYXRpb25TZWN1cmVTZXJ2ZXJDQS5jcnQwIwYIKwYBBQUH MAGGF2h0dHA6Ly9vY3NwLnNlY3RpZ28uY29tMIIBAwYKKwYBBAHWeQIEAgSB9ASB 8QDvAHUArfe++nz/EMiLnT2cHj4YarRnKV3PsQwkyoWGNOvcgooAAAGKwM0lOAAA BAMARjBEAiBwdRI4wvLIK/DxBLI7eOzu8IRbz0KWJaAdIc6Tll04SgIgWgg01PhF lYUyx4Yb3S+l7qH4uYU4qxIWKoslqyiatOkAdgB6MoxU2LcttiDqOOBSHumEFnAy E4VNO9IrwTpXo1LrUgAAAYrAzSWOAAAEAwBHMEUCIGTJFyvurMe9n2p+V32XdB1p Sebrj8zcAyVCFE1hWsc3AiEAhnhxTzZrnOYr/aLLdCaBK50war5renBl9QyubCWJ OcEwMwYDVR0RBCwwKoIRdGhpbmstYm9va3MuY28udWuCFXd3dy50aGluay1ib29r cy5jby51azANBgkqhkiG9w0BAQsFAAOCAQEAdtlyBik+TdLTmJJY7jXR5yAaosn9 HFGtiLrfVqrwSgxeN5GYGGXZxLv3bmFWfCREcQ9rxGrwbVJiv4MnbfmZxeDVM0yB dARoRmAVUqAUuZJYZui+KNwkIkZaD8TjGqijMafUV22XgaEG/ntesVIl4VxPof8Z fzxFyZRIVOFOd1xfWk/Eg6QXBCsuu+FXBSLgpQyzxP3UfztGLEDZQq9BjcweYQue 5GXDz5f78D/UZaNLmw0LOrV4Yo5hERQMeTBagyKqoDUvjMjoyym+Jw9yc+/LG/1P goqrbTa9Iula/V4xQo6rVyY3N+tW2nxNXn+MoW5EqJJayoaRmB2moYGunw== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqUO7mjA9mC6RU1lWrbEl 1/YvF55e4ZixLrLSDwx7vGjQuzun1aly1IxwI8D4Rf+Qf3HHpsIT5CHXtlOtAhMo pl7SQ+mEzoIPQ5UFkPOyrr0Gzv7nA9Rl5xZdTeIsKTtsxJSLNPcBAb/padCaUR2w nFxPEjdzrS8pEa32l004hVh8m6m4nyPLbvbbnCt9SFxuW+eijbumrSucHsP+PJy9 wkmnpXLcp9xv41m7EAJ3XvXiIhTA/G+pb+np+3oiHGCnAIbmriXnPQM+bbM6Pipa KQpCWSKLYqeU35idWyoL52AZIkLglrkrFKgeofdVWG88qTO9nTWBjI5F10MuTuuS +QIDAQAB -----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 162162573696079686854513226072011835812 . . . . . . . . [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 'GB' . . . . . . . . . . . . [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 'Greater Manchester' . . . . . . . . . . . . [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 'Salford' . . . . . . . . . . . . [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 'Sectigo Limited' . . . . . . . . . . . . [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 'Sectigo RSA Domain Validation Secure Server CA' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-09-23 00:00:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-22 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 'think-books.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 21367673838381338473142699610820281979135181147206858936407749967210960110751626047059524771656414056522520319046365651962402241066231774960128738331462103586018859765689027261418631204673883921496076527128219066870486388360728022774223589253500119030457078859045088487145992582892081377217619082527992601524716416163077531819236142259107397360409464215477917078101266273413570543768574888293810441557923456317786444594513672431131188649261723154931066669110212821736750093471808730328007072216087977511811799977648110624700034507867453911823764928284258984329715585046221017122487269071246558542479545460799985914617 . . . . . . . . . . . . . . . . . . . . [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 8d8c5ec454ad8ae177e99bf99b05e1b8018d61e1 . . . . . . . . . . . . . . . . [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) 6c75ff0b5efb7b2e0b3e2cdfc6f4c1ccdde63dc7 . . . . . . . . . . . . . . . . [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 (66 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.6449.1.2.2.7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://sectigo.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 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (120 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.sectigo.com/SectigoRSADomainValidationSecureServerCA.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.sectigo.com' . . . . . . . . . . . . . . . . [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) 00ef007500adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a0000018ac0cd25380000040300463044022070751238c2f2c82bf0f104b23b78eceef0845bcf429625a01d21ce93965d384a02205a0834d4f845958532c7861bdd2fa5eea1f8b98538ab12162a8b25ab289ab4e90076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018ac0cd258e0000040300473045022064c9172beeacc7bd9f6a7e577d97741d6949e6eb8fccdc032542144d615ac7370221008678714f366b9ce62bfda2cb7426812b9d306abe6b7a7065f50cae6c258939c1 . . . . . . . . . . . . . . . . [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 (44 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'think-books.co.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.think-books.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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