DV SSL/TLS Certificate for webdisk.cys.tw

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the webdisk.cys.tw DV SSL/TLS Certificate

This certificate with serial number 05:d5:f4:2a:41:83:8b:a8:c7:73:9d:b4:dc:fc:19:88:4e:19 for webdisk.cys.tw was issued on by Let's Encrypt.

With 11 subject alternative names, this certificate can be used to secure multiple FQDNs. This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for webdisk.cys.tw provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • 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)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 05:d5:f4:2a:41:83:8b:a8:c7:73:9d:b4:dc:fc:19:88:4e:19
Serial Number (int): 508366124849179439871080953713034934111769
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: d5:b3:1f:cf:1e:d5:8f:33:df:a6:05:21:09:24:23:1c:d0:34:92:7a
Authority Key Identifier: c5:cf:46:a4:ea:f4:c3:c0:7a:6c:95:c4:2d:b0:5e:92:2f:26:e3:b9

Fingerprint (SHA-1): 48:90:40:26:1b:47:2f:56:de:90:47:d2:dc:2d:4a:9d:ef:46:81:48
Fingerprint (SHA-256): ac:74:e3:33:7e:da:7b:62:fb:45:27:12:68:65:a7:a6:ac:22:bd:e2:df:c5:ee:2c:12:27:d0:fb:aa:fd:8a:aa

Issuing Certificate URL: http://r11.i.lencr.org/

Revocation Information

OCSP Server: http://r11.o.lencr.org
CRL Distribution Point: http://r11.c.lencr.org/26.crl

Check the revocation status for certificate webdisk.cys.tw
11
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for webdisk.cys.tw

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
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

autodiscover.cys.tw
cpanel.cys.tw
cpcalendars.cys.tw
cpcontacts.cys.tw
cys.era.tw
cys.tw
mail.cys.tw
webdisk.cys.tw
webmail.cys.tw
www.cys.era.tw
www.cys.tw

X.509 Certificate

The complete raw X.509 certificate details for webdisk.cys.tw in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFtjCCBJ6gAwIBAgISBdX0KkGDi6jHc5203PwZiE4ZMA0GCSqGSIb3DQEBCwUA
MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
EwNSMTEwHhcNMjUwNTA2MDY1NDQ5WhcNMjUwODA0MDY1NDQ4WjAZMRcwFQYDVQQD
Ew53ZWJkaXNrLmN5cy50dzCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEB
AKpoqyCR8kIslkjqmxsqCQjdjHBo+lrRSQ7vyl4OEghDGQdCOFIDGwTLXhxXOWzD
2qjsxh42g7ZVluavICv6gJo73DIXcxAmdowd1X6nPkBiUleQXXI91mx0wZAjMY1V
lbGhEnDaVJ84v3s+ZPpcPobiZRXkxtYmmQQCwNiZCt30FsG3j6BhAGBAGP993dMj
h+OJSoP1zEkBMAEEqZSVnNgSyFR2VOTi4cWMaO/7MP0Uv8iyXpUpBwUJrG7cKZ2p
6KeZSdvBpaa/QtmY4kamFLjsQbG83M0WDGX1Y98cfwlWQlqDp0AaXQ50/tuhnhxr
Z667x0esSF9aD6exhq7wh3kCAwEAAaOCAtwwggLYMA4GA1UdDwEB/wQEAwIFoDAd
BgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNV
HQ4EFgQU1bMfzx7VjzPfpgUhCSQjHNA0knowHwYDVR0jBBgwFoAUxc9GpOr0w8B6
bJXELbBeki8m47kwVwYIKwYBBQUHAQEESzBJMCIGCCsGAQUFBzABhhZodHRwOi8v
cjExLm8ubGVuY3Iub3JnMCMGCCsGAQUFBzAChhdodHRwOi8vcjExLmkubGVuY3Iu
b3JnLzCBswYDVR0RBIGrMIGoghNhdXRvZGlzY292ZXIuY3lzLnR3gg1jcGFuZWwu
Y3lzLnR3ghJjcGNhbGVuZGFycy5jeXMudHeCEWNwY29udGFjdHMuY3lzLnR3ggpj
eXMuZXJhLnR3ggZjeXMudHeCC21haWwuY3lzLnR3gg53ZWJkaXNrLmN5cy50d4IO
d2VibWFpbC5jeXMudHeCDnd3dy5jeXMuZXJhLnR3ggp3d3cuY3lzLnR3MBMGA1Ud
IAQMMAowCAYGZ4EMAQIBMC4GA1UdHwQnMCUwI6AhoB+GHWh0dHA6Ly9yMTEuYy5s
ZW5jci5vcmcvMjYuY3JsMIIBAwYKKwYBBAHWeQIEAgSB9ASB8QDvAHYApELFBklg
YVSPD9TqnPt6LSZFTYepfy/fRVn2J086hFQAAAGWpJW+3QAABAMARzBFAiAcx1o2
6tCXIJX51fs8Dg+NgZVMV1zCD2LAOdPWjSQrkwIhAPWAxSjD2mNdFswNNWFB7GEA
9hEAh5LBEtUwXKCSF33pAHUAzPsPaoVxCWX+lZtTzumyfCLphVwNl422qX5UwP5M
DbAAAAGWpJW+7QAABAMARjBEAiAbmcVrEDIjxM1LALPzPWjHxnQk0sMeZXtWTZ78
0nFqjwIgcj+sBJ0cE592ljDDwvZ+TSOE0PhXmhL9H1BJJ8umALYwDQYJKoZIhvcN
AQELBQADggEBAHzNFlYEHAosW6tvYsE7B71y8O5R0XxFvKV+vP2mXAlLOs5qPzFy
wUmA1LiX1IN8+jWwABQ4OjKlf0f94WtCwAJd8d3jGJ/cRYWs1Xca83D14EdgeS1r
m7Ti+1UKpfixvq+15Umbs5hIeFzFkQ/K58SCMZLzLgbgrl9+zy7+kyhOB7iAvJKx
SA0p8KW6PZpXSymzSg4Edr+g4YBTMxoMiPh//H8x5IyvipNjTiOwmt3fRnF3mw3h
lqiOX2pJDLWjoC9lqKCsQsrEOEkNwbnbtdUExkOMZdx5Cmpa577Znrt0W8QIP8F4
HP/FkGEs6mSIf6AiyheKi72SkzxLweVQvfk=
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqmirIJHyQiyWSOqbGyoJ
CN2McGj6WtFJDu/KXg4SCEMZB0I4UgMbBMteHFc5bMPaqOzGHjaDtlWW5q8gK/qA
mjvcMhdzECZ2jB3Vfqc+QGJSV5Bdcj3WbHTBkCMxjVWVsaEScNpUnzi/ez5k+lw+
huJlFeTG1iaZBALA2JkK3fQWwbePoGEAYEAY/33d0yOH44lKg/XMSQEwAQSplJWc
2BLIVHZU5OLhxYxo7/sw/RS/yLJelSkHBQmsbtwpnanop5lJ28Glpr9C2ZjiRqYU
uOxBsbzczRYMZfVj3xx/CVZCWoOnQBpdDnT+26GeHGtnrrvHR6xIX1oPp7GGrvCH
eQIDAQAB
-----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 508366124849179439871080953713034934111769
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt'
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R11'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-05-06 06:54:49 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-04 06:54:48 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'webdisk.cys.tw'
 . . . . . . . . [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
 . . . . . . . . . . . . . . . . [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 21512125788359632541087848892049030052966176350276386623608633936153479369826078585428680892200113892021646221135910874003673944350685571295088371556539496145012025861138326028085522763934586505944820158803978680067999175717116656607387573450608039770899154659949678174455875535977649908929659643283762383025161735099825023431160611989967971634699148762793304908185644786308915276239669756683437351145327348026374930857379793944713115373644289492274995524690005999001437700027807695919165458745740249953063493367380169297153888075627592991381123357224395433503791688379892779595214812440626523601644675228166905694073
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							d5b31fcf1ed58f33dfa605210924231cd034927a
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName c5cf46a4eaf4c3c07a6c95c42db05e922f26e3b9
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (75 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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.o.lencr.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (171 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'autodiscover.cys.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cpanel.cys.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cpcalendars.cys.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cpcontacts.cys.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cys.era.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cys.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.cys.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webdisk.cys.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webmail.cys.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.cys.era.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.cys.tw'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (12 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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 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://r11.c.lencr.org/26.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600a442c506496061548f0fd4ea9cfb7a2d26454d87a97f2fdf4559f6274f3a845400000196a495bedd000004030047304502201cc75a36ead0972095f9d5fb3c0e0f8d81954c575cc20f62c039d3d68d242b93022100f580c528c3da635d16cc0d356141ec6100f611008792c112d5305ca092177de9007500ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db000000196a495beed000004030046304402201b99c56b103223c4cd4b00b3f33d68c7c67424d2c31e657b564d9efcd2716a8f0220723fac049d1c139f769630c3c2f67e4d2384d0f8579a12fd1f504927cba600b6
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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