This digital certificate with serial number 1f:ad:0a:20:9c:ca:45:9c:53:8f:01:d4:f2:d2:fb:8e was issued on
by WoSign CA Limited.
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.
The keyUsage extension SHOULD be critical
(RFC 5280: 18.104.22.168)
Subscriber Certificate: extKeyUsage either the value id-kp-serverAuth or id-kp-clientAuth or both values MUST be present.
Company registration number:330000000045316 Organization:华数传媒网络有限公司
Address:杭州市滨江区六和路368号1幢（北）6楼E6064室 Postal code:310053 State / Province:浙江省 Locality:杭州市 Country:CN
WoSign CA Limited
Organization:WoSign CA Limited
Postal code:310053 State / Province:浙江省 Locality:杭州市 Country:CN
Time since certificate expired
This certificate has expire since
Serial Number (hex): 1f:ad:0a:20:9c:ca:45:9c:53:8f:01:d4:f2:d2:fb:8e
Serial Number (int): 42104540633780347487609249759067569038
Serial Number lenght: 125 bits, 16 octets