Issued by VeriSign Class 3 Secure Server 1024-bit CA - G2

About this certificate

This digital certificate with serial number 76:41:0d:ea:7f:62:08:95:0c:d7:6b:c2:f2:bd:eb was issued on by VeriSign, Inc. .

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.

Cerificate errors/warnings *beta

  • WARNING: Using depricated TeletexString for '[Toshima]'
  • WARNING: Using depricated TeletexString for '[Taisho University]'
  • WARNING: Using depricated TeletexString for '[General Affairs]'
  • WARNING: Using depricated TeletexString for '[Terms of use at www.verisign.com/rpa (c)05]'
  • WARNING: Using depricated TeletexString for '[t-po.tais.ac.jp]'
  • ERROR: KeyUsage extension SHOULD be marked as critical when present
  • WARNING: Certificate contains unknown extension ([])
  • ERROR: Certificate [key too small: 1024]
  • ERROR: Certificate doesn't contain any subjectAltName
  • ERROR: Certificate CN is not listed in subjectAltName

Taisho University

Organization: Taisho University
Organization unit: General Affairs
Organization unit: Terms of use at www.verisign.com/rpa (c)05
State / Province: Tokyo
Locality: Toshima
Country: JP

VeriSign, Inc.

Organization: VeriSign, Inc.
Organization unit: VeriSign Trust Network
Organization unit: Terms of use at https://www.verisign.com/rpa (c)09
State / Province: Tokyo
Locality: Toshima
Country: JP

Time since certificate expired

This certificate has expire since

Certificate Details

Serial Number (hex): 76:41:0d:ea:7f:62:08:95:0c:d7:6b:c2:f2:bd:eb
Serial Number (int): 614010488470948531695817725150674411
Serial Number lenght: 119 bits, 15 octets

AuthorityKeyId: 0f:c1:10:30:77:38:fd:6e:c1:58:2b:30:4a:ff:c4:76:63:59:4e:96

Fingerprint (sha1): eb:d4:9f:12:0d:86:6b:61:06:7f:a9:80:3d:c5:b7:45:09:02:3e:42
Fingerprint (sha256): 0b:aa:d7:68:66:62:c1:6f:46:75:1f:fd:b9:4c:71:07:f3:e9:62:ef:c7:1b:e8:08:d2:58:cb:60:31:c9:2c:e1

Issuing Certificate URL: http://SVR1024SecureG2-aia.verisign.com/SVR1024SecureG2.cer

Revocation information

OCSP Server: http://ocsp.verisign.com
CRL Distribution Point: http://SVR1024SecureG2-crl.verisign.com/SVR1024SecureG2.crl

Check the revocation status for the current certificate on t-po.tais.ac.jp
DNS Names
Email Addresses
IP Addresses

Advanced Certificate Properties

Technical details about this certificate

Public Key Algorithm


Key Size


Signature Algorithm

SHA1 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication


8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names