www.postofficeisa.co.uk

Issued by thawte Extended Validation SSL CA

About this certificate


This digital certificate with serial number 14:4a:db:f2:cf:46:a5:8d:8e:9e:46:68:53:50:87:ab was issued on by thawte, Inc. .

While the 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.

Cerificate errors/warnings *beta

  • WARNING: Using depricated TeletexString for '[London]'
  • WARNING: Using depricated TeletexString for '[London]'
  • WARNING: Using depricated TeletexString for '[Post Office Ltd]'
  • WARNING: Using depricated TeletexString for '[www.postofficeisa.co.uk]'

Post Office Ltd

Company registration number: 02154540
Organization: Post Office Ltd
State / Province: London
Locality: London
Country: GB

thawte, Inc.

Organization: thawte, Inc.
Organization unit: Terms of use at https://www.thawte.com/cps (c)06
State / Province: London
Locality: London
Country: GB

Time since certificate expired

This certificate has expire since

Certificate Details

Serial Number (hex): 14:4a:db:f2:cf:46:a5:8d:8e:9e:46:68:53:50:87:ab
Serial Number (int): 26973250968297226512508709985997326251
Serial Number lenght: 125 bits, 16 octets

SubjectKeyId:
AuthorityKeyId: cd:32:e2:f2:5d:25:47:02:aa:8f:79:4b:32:ee:03:99:fd:30:49:d1

Fingerprint (sha1): b4:04:5f:2f:13:47:13:25:b7:1d:0a:e6:23:58:b8:06:ea:61:4f:42
Fingerprint (sha256): 5c:ac:6b:93:79:ab:ac:6b:fe:2f:7d:2e:84:45:46:67:5f:d8:e9:c5:08:ed:e0:20:12:20:e8:6f:09:14:b0:8a

Issuing Certificate URL: http://crl.thawte.com/ThawteEVCA2006.cer

Revocation information

OCSP Server: http://ocsp.thawte.com
CRL Distribution Point: http://crl.thawte.com/ThawteEVCA2006.crl

Check the revocation status for the current certificate on www.postofficeisa.co.uk
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details about this certificate


Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA1 with RSA



Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

8 extensions
No unhandled critical extensions



CA Certificate

This is not a CA certificate

Subject Alternative Names

This certificate doesn't contain any other subject alternative names besides the common name of the subject: www.postofficeisa.co.uk

Certificate

The complete raw certificate details in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE----- MIIFNzCCBB+gAwIBAgIQFErb8s9GpY2OnkZoU1CHqzANBgkqhkiG9w0BAQUFADCB izELMAkGA1UEBhMCVVMxFTATBgNVBAoTDHRoYXd0ZSwgSW5jLjE5MDcGA1UECxMw VGVybXMgb2YgdXNlIGF0IGh0dHBzOi8vd3d3LnRoYXd0ZS5jb20vY3BzIChjKTA2 MSowKAYDVQQDEyF0aGF3dGUgRXh0ZW5kZWQgVmFsaWRhdGlvbiBTU0wgQ0EwHhcN MTMwNjI4MDAwMDAwWhcNMTUwNjI4MjM1OTU5WjCBsjETMBEGCysGAQQBgjc8AgED EwJHQjEdMBsGA1UEDxMUUHJpdmF0ZSBPcmdhbml6YXRpb24xETAPBgNVBAUTCDAy MTU0NTQwMQswCQYDVQQGEwJHQjEPMA0GA1UECBQGTG9uZG9uMQ8wDQYDVQQHFAZM b25kb24xGDAWBgNVBAoUD1Bvc3QgT2ZmaWNlIEx0ZDEgMB4GA1UEAxQXd3d3LnBv c3RvZmZpY2Vpc2EuY28udWswggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIB AQCvy/RCYw8C2u6yyEduLrtgwRk0xTKGA90lRrI7TeInXxd8akX66CwEtF7+nNMf 7Rg2idleT1Sjey5Zfhcd91UrQsSyktKhzEg/TP3mXI8Daqmh9mR/SPme/1NXEfSh 6QFgmImF/81idBm7grFN2tp8jVciSF3XschUJpQSYAyv32mX1S/yDLfEvo4xbyZB WMduChmvkTE1Y5nVFJ309ylJPy0/F4HBCuHyoHpgW0jsdWaZn60YAeHXV+SMf/p0 iL/mHoLgj4gvqX4bZUuV5cBbA8y/PPwPnf43Zsj8pMzaPN+ZH6FCEW1/SzIj+xDz DEpr9Cr5Pt4cEzqdnhs+6rEdAgMBAAGjggFsMIIBaDAiBgNVHREEGzAZghd3d3cu cG9zdG9mZmljZWlzYS5jby51azAJBgNVHRMEAjAAMA4GA1UdDwEB/wQEAwIFoDA5 BgNVHR8EMjAwMC6gLKAqhihodHRwOi8vY3JsLnRoYXd0ZS5jb20vVGhhd3RlRVZD QTIwMDYuY3JsMEIGA1UdIAQ7MDkwNwYLYIZIAYb4RQEHMAEwKDAmBggrBgEFBQcC ARYaaHR0cHM6Ly93d3cudGhhd3RlLmNvbS9jcHMwHQYDVR0lBBYwFAYIKwYBBQUH AwEGCCsGAQUFBwMCMB8GA1UdIwQYMBaAFM0y4vJdJUcCqo95SzLuA5n9MEnRMGgG CCsGAQUFBwEBBFwwWjAiBggrBgEFBQcwAYYWaHR0cDovL29jc3AudGhhd3RlLmNv bTA0BggrBgEFBQcwAoYoaHR0cDovL2NybC50aGF3dGUuY29tL1RoYXd0ZUVWQ0Ey MDA2LmNlcjANBgkqhkiG9w0BAQUFAAOCAQEAoe+zhGfvC1h9CLzIs3I7yREqhUeB u5U1CSOJKEA5i97OPuOzF4+DfMheVsO3sgJM0e2rOyjBaqFvTEosxcLJIoBs5O4p dS4gmu6H59eGuWtSopNGMghJTZx8YLZS6/XWJQ1WkaZrf79vjBJvG4M/uk2hoiun FKumo5Pjg48YLEMLWeN3khxvLOhD8Ur+ntGape+R3M2g45mDsbvOk/Z7ssCjo7R8 N71VTeY+rFBCS7fewG8kq+1FV+26vualDFK1RB0WkHANsiIEvN3DlRTHsXYJ0Ism slqLrn9vxMM58vQLLUo/z9f7yaiKPKmqV3C5K+Y5Z99lCpH89Cf7BhGGig== -----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr8v0QmMPAtrusshHbi67 YMEZNMUyhgPdJUayO03iJ18XfGpF+ugsBLRe/pzTH+0YNonZXk9Uo3suWX4XHfdV K0LEspLSocxIP0z95lyPA2qpofZkf0j5nv9TVxH0oekBYJiJhf/NYnQZu4KxTdra fI1XIkhd17HIVCaUEmAMr99pl9Uv8gy3xL6OMW8mQVjHbgoZr5ExNWOZ1RSd9Pcp ST8tPxeBwQrh8qB6YFtI7HVmmZ+tGAHh11fkjH/6dIi/5h6C4I+IL6l+G2VLleXA WwPMvzz8D53+N2bI/KTM2jzfmR+hQhFtf0syI/sQ8wxKa/Qq+T7eHBM6nZ4bPuqx HQIDAQAB -----END PUBLIC KEY-----

ASN1 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 26973250968297226512508709985997326251 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.5 (sha1WithRSAEncryption) . . . . . . . . . . . . [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 'thawte, Inc.' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.11 (organizationalUnitName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Terms of use at https://www.thawte.com/cps (c)06' . . . . . . . . . . . . [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 'thawte Extended Validation SSL CA' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2013-06-28 00:00:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2015-06-28 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 1.3.6.1.4.1.311.60.2.1.3 (jurisdictionOfIncorporationC) . . . . . . . . . . . . . . . . . . . . [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 2.5.4.15 (businessCategory) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Private Organization' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.5 (serialNumber) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString '02154540' . . . . . . . . . . . . [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:20|false] TeletexString, T61String 'London' . . . . . . . . . . . . [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:20|false] TeletexString, T61String 'London' . . . . . . . . . . . . [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:20|false] TeletexString, T61String 'Post Office Ltd' . . . . . . . . . . . . [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:20|false] TeletexString, T61String 'www.postofficeisa.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 22192276902927323176906356253707605542689536462295660393424338143902394812737304824820823895056507021311702974820014394332622582868669649358991963875555370226021637383629225578546213852476086263004798782577724209419135355447579627336290592843894487869256798916399753190356526560556986423974791867846856389644627206222147600670174750089416770261664839387920911081209594179575661222139019265680681690012135615331218251597430258344172380395817846078966709083019955599195345893441678419619661037119350442546381395688353620561262949631189303785831696441542024283891518167611636218141246555117122434872429033144291234066717 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.17 (subjectAltName) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (27 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.postofficeisa.co.uk' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [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 2.5.29.15 (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 2.5.29.31 (cRLDistributionPoints) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (50 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.thawte.com/ThawteEVCA2006.crl' . . . . . . . . . . . . . . . . [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 (59 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.16.840.1.113733.1.7.48.1 (Thawte EV policy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://www.thawte.com/cps' . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName cd32e2f25d254702aa8f794b32ee0399fd3049d1 . . . . . . . . . . . . . . . . [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 (92 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.thawte.com' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://crl.thawte.com/ThawteEVCA2006.cer' . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.5 (sha1WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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