DNS
THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.2

mg3.so-net.net.tw · 27.105.63.63:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed

Certificate verification failed

Subject
C=TW ST=Taipei L=Taipei O=Green-computing OU=IT CN=nopam.green-computing.com emailAddress=mailadmin@green-computing.com
Issuer
C=TW ST=Taipei L=Taipei O=Green-computing OU=IT CN=nopam.green-computing.com emailAddress=mailadmin@green-computing.com
Valid from
2020-10-08T09:03:12+00:00
Expires
2030-10-06T09:03:12+00:00
Days remaining
1437
Serial (hex)
60286F038027CE270AE15A0250C17D3201BE4001
Signature
RSA-SHA512
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

20:1C:63:8C:07:9E:7C:F2:06:92:7E:E5:B9:FF:18:B5:1F:43:ED:27:46:C8:9A:57:B5:C6:0D:2A:BE:CC:6C:C3
Certificate extensions & PEM
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-10-29T18:31:14+00:00

Server-presented chain · 3 additional certificates

Chain certificate 1

Subject
C=SE O=AddTrust AB OU=AddTrust External TTP Network CN=AddTrust External CA Root
Issuer
C=SE O=AddTrust AB OU=AddTrust External TTP Network CN=AddTrust External CA Root
Valid from
2000-05-30T10:48:38+00:00
Expires
2020-05-30T10:48:38+00:00
Days remaining
-2344
Serial (hex)
01
Signature
RSA-SHA1
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

68:7F:A4:51:38:22:78:FF:F0:C8:B1:1F:8D:43:D5:76:67:1C:6E:B2:BC:EA:B4:13:FB:83:D9:65:D0:6D:2F:F2
Certificate extensions & PEM
subjectKeyIdentifier
AD:BD:98:7A:34:B4:26:F7:FA:C4:26:54:EF:03:BD:E0:24:CB:54:1A
keyUsage
Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
authorityKeyIdentifier
keyid:AD:BD:98:7A:34:B4:26:F7:FA:C4:26:54:EF:03:BD:E0:24:CB:54:1A DirName:/C=SE/O=AddTrust AB/OU=AddTrust External TTP Network/CN=AddTrust External CA Root serial:01
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=GB ST=Greater Manchester L=Salford O=COMODO CA Limited CN=COMODO RSA Certification Authority
Issuer
C=SE O=AddTrust AB OU=AddTrust External TTP Network CN=AddTrust External CA Root
Valid from
2000-05-30T10:48:38+00:00
Expires
2020-05-30T10:48:38+00:00
Days remaining
-2344
Serial (hex)
2766EE56EB49F38EABD770A2FC84DE22
Signature
RSA-SHA384
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

4F:32:D5:DC:00:F7:15:25:0A:BC:C4:86:51:1E:37:F5:01:A8:99:DE:B3:BF:7E:A8:AD:BB:D3:AE:F1:C4:12:DA
Certificate extensions & PEM
authorityKeyIdentifier
AD:BD:98:7A:34:B4:26:F7:FA:C4:26:54:EF:03:BD:E0:24:CB:54:1A
subjectKeyIdentifier
BB:AF:7E:02:3D:FA:A6:F1:3C:84:8E:AD:EE:38:98:EC:D9:32:32:D4
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
certificatePolicies
Policy: X509v3 Any Policy
crlDistributionPoints
Full Name: URI:http://crl.usertrust.com/AddTrustExternalCARoot.crl
authorityInfoAccess
OCSP - URI:http://ocsp.usertrust.com
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 3

Subject
C=GB ST=Greater Manchester L=Salford O=COMODO CA Limited CN=COMODO RSA Domain Validation Secure Server CA
Issuer
C=GB ST=Greater Manchester L=Salford O=COMODO CA Limited CN=COMODO RSA Certification Authority
Valid from
2014-02-12T00:00:00+00:00
Expires
2029-02-11T23:59:59+00:00
Days remaining
836
Serial (hex)
2B2E6EEAD975366C148A6EDBA37C8C07
Signature
RSA-SHA384
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

02:AB:57:E4:E6:7A:0C:B4:8D:D2:FF:34:83:0E:8A:C4:0F:44:76:FB:08:CA:6B:E3:F5:CD:84:6F:64:68:40:F0
Certificate extensions & PEM
authorityKeyIdentifier
BB:AF:7E:02:3D:FA:A6:F1:3C:84:8E:AD:EE:38:98:EC:D9:32:32:D4
subjectKeyIdentifier
90:AF:6A:3A:94:5A:0B:D8:90:EA:12:56:73:DF:43:B4:3A:28:DA:E7
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE, pathlen:0
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: X509v3 Any Policy Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://crl.comodoca.com/COMODORSACertificationAuthority.crl
authorityInfoAccess
CA Issuers - URI:http://crt.comodoca.com/COMODORSAAddTrustCA.crt OCSP - URI:http://ocsp.comodoca.com
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

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