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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

one.th · 203.150.237.9:443

Verified

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

Subject
C=TH ST=Bangkok L=Huai Khwang O=One Email Company Limited CN=*.one.th
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=GeoTrust TLS RSA CA G1
Valid from
2026-09-16T00:00:00+00:00
Expires
2027-04-02T23:59:59+00:00
Days remaining
143
Serial (hex)
08C06559DBF913344D9D5CF2512F211D
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.one.th, DNS:one.th

SHA-256 fingerprint

88:E3:07:AF:BD:35:8F:CA:5C:0D:2F:58:F3:AA:64:9F:C3:23:EA:C2:D4:DD:C0:48:5C:E5:6A:A9:2F:DD:F8:65
Certificate extensions & PEM
authorityKeyIdentifier
94:4F:D4:5D:8B:E4:A4:E2:A6:80:FE:FD:D8:F9:00:EF:A3:BE:02:57
subjectKeyIdentifier
A5:61:B0:7E:FC:1D:30:6C:8E:69:B8:F6:D4:EC:67:73:96:E2:44:05
subjectAltName
DNS:*.one.th, DNS:one.th
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
crlDistributionPoints
Full Name: URI:http://cdp.geotrust.com/GeoTrustTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.geotrust.com CA Issuers - URI:http://cacerts.geotrust.com/GeoTrustTLSRSACAG1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F: AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26 Timestamp : Sep 16 07:00:19.819 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:A9:0D:9C:86:BE:8D:38:B1:6D:6F:D0: E1:83:62:1B:8B:22:EF:F9:B8:57:E5:27:22:57:E8:BC: 9B:4A:CB:AE:D8:02:20:68:D4:EF:A0:27:63:F4:73:91: CB:46:75:18:CC:D6:58:E0:0C:1E:A1:07:03:64:9A:C6: 37:32:0B:FD:A9:77:10 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 44:C2:BD:0C:E9:14:0E:64:A5:C9:4A:01:93:0A:5A:A1: BB:35:97:0E:00:EE:11:16:89:68:2A:1C:44:D7:B5:66 Timestamp : Sep 16 07:00:19.878 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:30:66:A8:B1:D4:31:D3:97:28:90:0C:5C: B3:7C:EB:70:C5:13:FE:CF:0D:97:99:35:82:16:95:E9: 58:3B:B3:B1:02:21:00:ED:01:39:F2:98:0B:37:CA:8C: E2:95:32:24:02:A2:F7:7A:71:BE:D9:85:3B:D9:8A:05: 68:AC:DC:24:76:4B:F5 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46: FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8 Timestamp : Sep 16 07:00:19.861 2026 GMT Extensions: 00:00:05:00:0E:33:AB:52 Signature : ecdsa-with-SHA256 30:44:02:20:5D:A8:03:6B:97:16:5D:CD:DC:B8:B5:47: 55:4B:1A:42:A5:8C:A0:D9:12:DF:F4:23:7E:72:E0:39: 05:C2:FE:DA:02:20:31:E5:5A:29:8A:E3:1F:1E:F1:B2: 77:27:BC:0D:6A:BD:BC:88:AE:82:C9:C0:08:56:69:C1: 29:A5:89:47:78:B5
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-11-10T01:04:01+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=GeoTrust TLS RSA CA G1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2017-11-02T12:23:37+00:00
Expires
2027-11-02T12:23:37+00:00
Days remaining
357
Serial (hex)
0D07782A133FC6F9A57296E131FFD179
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C0:6E:30:7F:7C:FC:1D:32:FA:72:A4:C0:33:C8:7B:90:01:9A:F2:16:F0:77:5D:64:97:8A:2E:CA:6C:8A:23:0E
Certificate extensions & PEM
subjectKeyIdentifier
94:4F:D4:5D:8B:E4:A4:E2:A6:80:FE:FD:D8:F9:00:EF:A3:BE:02:57
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.digicert.com/CPS
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2013-08-01T12:00:00+00:00
Expires
2038-01-15T12:00:00+00:00
Days remaining
4084
Serial (hex)
033AF1E6A711A9A0BB2864B11D09FAE5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

CB:3C:CB:B7:60:31:E5:E0:13:8F:8D:D3:9A:23:F9:DE:47:FF:C3:5E:43:C1:14:4C:EA:27:D4:6A:5A:B1:CB:5F
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Digital Signature, Certificate Sign, CRL Sign
subjectKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
-----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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