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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

omu.ac.jp · 163.226.193.31:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
C=JP ST=Osaka L=Osaka O=University Public Corporation Osaka CN=www.omu.ac.jp
Issuer
C=JP O=SECOM Trust Systems CO.,LTD. CN=NII Open Domain CA - G7 RSA
Valid from
2025-11-21T01:45:34+00:00
Expires
2026-12-22T01:45:34+00:00
Days remaining
61
Serial (hex)
43ED159EB907A27388D5173289129309
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:www.omu.ac.jp, DNS:omu.ac.jp, DNS:www.hosp.omu.ac.jp, DNS:hosp.omu.ac.jp, DNS:www.ct.omu.ac.jp, DNS:ct.omu.ac.jp

SHA-256 fingerprint

2B:3D:B5:B1:95:06:BF:06:53:AF:DC:D1:82:52:B6:2B:AE:15:97:D6:96:36:48:9C:97:8F:9F:B8:23:CC:6C:60
Certificate extensions & PEM
authorityKeyIdentifier
B0:2E:E5:51:ED:FC:4A:CF:A3:87:F1:13:90:76:2D:9D:8E:94:A1:E3
authorityInfoAccess
CA Issuers - URI:http://repo1.secomtrust.net/sppca/nii/odca4/nii-odca4g7rsa.cer OCSP - URI:http://niig7rsa.ocsp.secom-cert.jp
subjectAltName
DNS:www.omu.ac.jp, DNS:omu.ac.jp, DNS:www.hosp.omu.ac.jp, DNS:hosp.omu.ac.jp, DNS:www.ct.omu.ac.jp, DNS:ct.omu.ac.jp
certificatePolicies
Policy: 1.2.392.200091.110.214.3 CPS: http://repo1.secomtrust.net/sppca/nii/odca4/ Policy: 2.23.140.1.2.2
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
crlDistributionPoints
Full Name: URI:http://repo1.secomtrust.net/sppca/nii/odca4/fullcrlg7rsa.crl
subjectKeyIdentifier
84:06:FB:42:FD:1B:A7:54:DD:E3:AA:AA:25:8D:82:27:86:DE:82:A2
keyUsage
Digital Signature, Key Encipherment
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : Nov 21 01:55:35.229 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:C2:38:8A:4F:7A:3D:46:4C:53:80:5D: 41:8A:C4:A4:38:BA:E4:71:A9:F8:92:81:F8:05:8E:70: C5:77:D6:BB:1D:02:20:6E:47:28:16:17:7A:49:CF:46: 0D:19:1C:B5:46:7D:64:06:9F:D8:C3:34:D3:6B:7E:CD: 57:21:65:63:A0:23:21 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D8:09:55:3B:94:4F:7A:FF:C8:16:19:6F:94:4F:85:AB: B0:F8:FC:5E:87:55:26:0F:15:D1:2E:72:BB:45:4B:14 Timestamp : Nov 21 01:55:36.072 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:BE:EA:FF:23:F9:3B:19:35:94:EC:6D: 6C:73:67:6F:EF:3B:88:CF:D0:0B:73:1A:9B:C1:E2:3C: 1B:47:A0:F6:06:02:21:00:DC:B2:09:25:FC:FE:0C:40: CD:28:0E:B6:9E:F0:22:F4:AF:2F:89:97:37:72:EF:0D: 27:FA:03:FC:E7:62:87:CE Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Nov 21 01:55:36.820 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:67:3B:25:93:16:11:FD:58:76:E6:BB:6C: B6:2A:27:B8:E2:57:C6:DE:C9:07:80:80:AC:70:40:7A: 54:D4:24:4D:02:21:00:92:89:C4:2A:A2:1C:4F:35:2C: 91:F1:99:FC:00:57:88:8B:CF:E8:D0:08:6F:25:4F:3C: E5:85:24:61:96:9E:28 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E: F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7 Timestamp : Nov 21 01:55:37.173 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:73:D4:E0:11:51:3E:A4:38:BD:8B:9C:39: FC:06:5F:3F:FE:FA:53:EB:39:D6:A7:D3:F5:31:05:0B: 86:36:31:8F:02:20:03:9B:B2:A3:28:C5:65:02:1D:D7: DA:C9:98:C8:A8:44:66:25:D3:D8:86:34:53:11:82:F7: 34:3E:8B:10:E5:F8
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-21T05:36:38+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=JP O=SECOM Trust Systems CO.,LTD. CN=NII Open Domain CA - G7 RSA
Issuer
C=JP O=SECOM Trust Systems CO.,LTD. OU=Security Communication RootCA2
Valid from
2020-12-15T08:46:22+00:00
Expires
2029-05-29T05:00:39+00:00
Days remaining
950
Serial (hex)
22B9B18587A69943B5EC368F4CAF68F7
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

60:3D:B7:07:A5:84:00:3B:ED:6F:1D:43:DC:D4:EA:E1:3C:D1:8D:79:8E:82:7D:E2:F3:A3:1F:31:93:FC:0D:AC
Certificate extensions & PEM
subjectKeyIdentifier
B0:2E:E5:51:ED:FC:4A:CF:A3:87:F1:13:90:76:2D:9D:8E:94:A1:E3
authorityKeyIdentifier
0A:85:A9:77:65:05:98:7C:40:81:F8:0F:97:2C:38:F1:0A:EC:3C:CF
basicConstraints
CA:TRUE, pathlen:0
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
crlDistributionPoints
Full Name: URI:http://repository.secomtrust.net/SC-Root2/SCRoot2CRL.crl
certificatePolicies
Policy: 1.2.392.200091.100.901.4 CPS: http://repository.secomtrust.net/SC-Root2/
authorityInfoAccess
OCSP - URI:http://scrootca2.ocsp.secomtrust.net CA Issuers - URI:http://repository.secomtrust.net/SC-Root2/SCRoot2ca.cer
-----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.

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