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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

TLSv1.3

seagem.vn · 103.139.202.101:443

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
The certificate has expired.

Certificate verification failed

Subject
CN=www.seagem.vn
Issuer
C=GB ST=Greater Manchester L=Salford O=Sectigo Limited CN=Sectigo RSA Domain Validation Secure Server CA
Valid from
2025-06-23T00:00:00+00:00
Expires
2026-06-23T23:59:59+00:00
Days remaining
-135
Serial (hex)
1FAD4ACD09DD316B51AC2D2B03CD8564
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:www.seagem.vn, DNS:seagem.vn

SHA-256 fingerprint

FD:24:B4:F3:61:12:9D:0E:0A:74:BE:9B:2C:41:B1:56:C5:34:7E:42:BC:17:FC:40:3D:47:B8:A4:E3:D7:09:B2
Certificate extensions & PEM
authorityKeyIdentifier
8D:8C:5E:C4:54:AD:8A:E1:77:E9:9B:F9:9B:05:E1:B8:01:8D:61:E1
subjectKeyIdentifier
D8:A5:B4:91:12:D6:1B:81:D8:43:3A:F9:7B:5E:B2:4A:A5:F8:ED:72
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
certificatePolicies
Policy: 1.3.6.1.4.1.6449.1.2.2.7 CPS: https://sectigo.com/CPS Policy: 2.23.140.1.2.1
authorityInfoAccess
CA Issuers - URI:http://crt.sectigo.com/SectigoRSADomainValidationSecureServerCA.crt OCSP - URI:http://ocsp.sectigo.com
subjectAltName
DNS:www.seagem.vn, DNS:seagem.vn
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 96:97:64:BF:55:58:97:AD:F7:43:87:68:37:08:42:77: E9:F0:3A:D5:F6:A4:F3:36:6E:46:A4:3F:0F:CA:A9:C6 Timestamp : Jun 23 11:58:12.045 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:91:24:CE:4F:E9:22:2F:0B:FD:33:95: F3:46:E0:0D:DA:C2:7C:A1:02:5D:92:09:FA:90:73:BD: AA:FA:54:E4:05:02:20:4B:56:55:AD:EB:75:5C:7A:C1: 78:F9:DA:3A:D8:36:E7:31:2E:9E:FA:7D:0F:11:C8:43: 3B:CE:A4:F5:06:2E:E0 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 19:86:D4:C7:28:AA:6F:FE:BA:03:6F:78:2A:4D:01:91: AA:CE:2D:72:31:0F:AE:CE:5D:70:41:2D:25:4C:C7:D4 Timestamp : Jun 23 11:58:12.174 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:F4:AB:51:24:37:2A:83:B2:80:27:DB: 97:64:AE:B5:88:D2:B6:C3:C2:12:6A:EB:1B:31:40:5E: F9:39:76:03:AD:02:20:22:A4:E4:30:5D:04:33:37:A8: DE:75:B8:5A:1B:C7:2A:E9:77:D1:80:A7:04:32:A2:E4: 47:7D:47:C6:69:02:D7 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 0E:57:94:BC:F3:AE:A9:3E:33:1B:2C:99:07:B3:F7:90: DF:9B:C2:3D:71:32:25:DD:21:A9:25:AC:61:C5:4E:21 Timestamp : Jun 23 11:58:11.987 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:E1:7C:96:5C:B6:56:DB:29:88:26:1C: 86:07:3D:08:DA:DB:0A:46:07:11:3D:EB:D0:CC:61:5C: 08:78:FB:FB:2B:02:20:42:19:EC:95:16:4E:A3:9D:C5: 0B:EC:C7:A5:8D:00:5F:CF:F2:D0:7C:27:8F:D5:6F:B3: 0B:AE:D8:DB:6A:A6:48
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-11-05T09:01:06+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=GB ST=Greater Manchester L=Salford O=Sectigo Limited CN=Sectigo RSA Domain Validation Secure Server CA
Issuer
C=US ST=New Jersey L=Jersey City O=The USERTRUST Network CN=USERTrust RSA Certification Authority
Valid from
2018-11-02T00:00:00+00:00
Expires
2030-12-31T23:59:59+00:00
Days remaining
1517
Serial (hex)
7D5B5126B476BA11DB74160BBC530DA7
Signature
RSA-SHA384
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

7F:A4:FF:68:EC:04:A9:9D:75:28:D5:08:5F:94:90:7F:4D:1D:D1:C5:38:1B:AC:DC:83:2E:D5:C9:60:21:46:76
Certificate extensions & PEM
authorityKeyIdentifier
53:79:BF:5A:AA:2B:4A:CF:54:80:E1:D8:9B:C0:9D:F2:B2:03:66:CB
subjectKeyIdentifier
8D:8C:5E:C4:54:AD:8A:E1:77:E9:9B:F9:9B:05:E1:B8:01:8D:61:E1
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.usertrust.com/USERTrustRSACertificationAuthority.crl
authorityInfoAccess
CA Issuers - URI:http://crt.usertrust.com/USERTrustRSAAddTrustCA.crt OCSP - URI:http://ocsp.usertrust.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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