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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

oap.go.th · 164.115.40.61:443

Verified
The certificate expires within 30 days.

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

Subject
C=TH ST=Bangkok L=Chatuchak O=Office of Atoms For Peace CN=*.oap.go.th
Issuer
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid from
2026-03-30T00:00:00+00:00
Expires
2026-10-14T23:59:59+00:00
Days remaining
8
Serial (hex)
06EF5D3FCD3043EC762F9D6B2662FA74
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.oap.go.th, DNS:oap.go.th

SHA-256 fingerprint

E8:2D:1E:55:CA:A9:5D:F1:8F:9A:FE:48:98:82:3C:80:89:4A:44:F9:B4:42:E0:B2:9E:4D:11:BE:56:52:E4:60
Certificate extensions & PEM
authorityKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
subjectKeyIdentifier
BC:E2:C4:8C:47:74:B3:F6:80:64:44:96:B1:0E:6C:54:7B:AB:EB:15
subjectAltName
DNS:*.oap.go.th, DNS:oap.go.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
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crt
basicConstraints
CA:FALSE
ct_precert_scts
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 : Mar 30 03:01:14.979 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:32:63:4A:1A:56:41:49:77:A6:DD:30:9A: 8B:86:B6:91:A3:60:F8:8C:F4:80:F1:3B:CF:F5:E9:A9: 7A:28:0C:BE:02:21:00:92:4B:BF:CC:4C:F2:DE:5A:E2: AE:18:57:A2:1D:27:83:36:F8:D4:52:D8:69:55:78:F6: D5:29:96:D1:52:8F:A0 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 : Mar 30 03:01:14.959 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:4D:E1:80:E3:F3:AA:58:A4:34:54:20:54: 02:91:DF:A2:1F:B1:ED:D4:F3:FC:E5:56:69:57:CB:67: 05:47:A8:23:02:21:00:9D:52:99:C7:CB:18:A4:78:35: EB:49:C0:F3:8B:AA:79:C1:B4:9C:F1:C4:35:61:50:E2: DB:2F:44:10:AE:9C:47 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65: 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8 Timestamp : Mar 30 03:01:14.996 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:C1:C8:05:70:4F:EA:EE:52:13:14:CD: 62:28:9C:A2:A6:FB:44:60:54:C9:E8:EB:9E:3D:77:4A: AE:F7:93:FD:58:02:21:00:84:C8:93:B3:0D:05:68:D0: 22:12:9F:76:FE:AE:DD:BE:1F:8A:5B:91:06:24:CC:4E: C5:E2:E5:B2:B1:02:AC:F3
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-10-06T17:37:19+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2021-03-30T00:00:00+00:00
Expires
2031-03-29T23:59:59+00:00
Days remaining
1635
Serial (hex)
0CF5BD062B5602F47AB8502C23CCF066
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C8:02:5F:9F:C6:5F:DF:C9:5B:3C:A8:CC:78:67:B9:A5:87:B5:27:79:73:95:79:17:46:3F:C8:13:D0:B6:25:A9
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
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
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalRootG2.crt
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: 2.16.840.1.114412.2.1 Policy: 2.23.140.1.1 Policy: 2.23.140.1.2.1 Policy: 2.23.140.1.2.2 Policy: 2.23.140.1.2.3
-----BEGIN CERTIFICATE-----
MIIEyDCCA7CgAwIBAgIQDPW9BitWAvR6uFAsI8zwZjANBgkqhkiG9w0BAQsFADBh
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
d3cuZGlnaWNlcnQuY29tMSAwHgYDVQQDExdEaWdpQ2VydCBHbG9iYWwgUm9vdCBH
MjAeFw0yMTAzMzAwMDAwMDBaFw0zMTAzMjkyMzU5NTlaMFkxCzAJBgNVBAYTAlVT
MRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxMzAxBgNVBAMTKkRpZ2lDZXJ0IEdsb2Jh
bCBHMiBUTFMgUlNBIFNIQTI1NiAyMDIwIENBMTCCASIwDQYJKoZIhvcNAQEBBQAD
ggEPADCCAQoCggEBAMz3EGJPprtjb+2QUlbFbSd7ehJWivH0+dbn4Y+9lavyYEEV
cNsSAPonCrVXOFt9slGTcZUOakGUWzUb+nv6u8W+JDD+Vu/E832X4xT1FE3LpxDy
FuqrIvAxIhFhaZAmunjZlx/jfWardUSVc8is/+9dCopZQ+GssjoP80j812s3wWPc
3kbW20X+fSP9kOhRBx5Ro1/tSUZUfyyIxfQTnJcVPAPooTncaQwywa8WV0yUR0J8
osicfebUTVSvQpmowQTCd5zWSOTOEeAqgJnwQ3DPP3Zr0UxJqyRewg2C/Uaoq2yT
zGJSQnWS+Jr6Xl6ysGHlHx+5fwmY6D36g39HaaECAwEAAaOCAYIwggF+MBIGA1Ud
EwEB/wQIMAYBAf8CAQAwHQYDVR0OBBYEFHSFgMBmx9833s+9KTeqAx2+7c0XMB8G
A1UdIwQYMBaAFE4iVCAYlebjbuYP+vq5Eu0GF485MA4GA1UdDwEB/wQEAwIBhjAd
BgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwdgYIKwYBBQUHAQEEajBoMCQG
CCsGAQUFBzABhhhodHRwOi8vb2NzcC5kaWdpY2VydC5jb20wQAYIKwYBBQUHMAKG
NGh0dHA6Ly9jYWNlcnRzLmRpZ2ljZXJ0LmNvbS9EaWdpQ2VydEdsb2JhbFJvb3RH
Mi5jcnQwQgYDVR0fBDswOTA3oDWgM4YxaHR0cDovL2NybDMuZGlnaWNlcnQuY29t
L0RpZ2lDZXJ0R2xvYmFsUm9vdEcyLmNybDA9BgNVHSAENjA0MAsGCWCGSAGG/WwC
ATAHBgVngQwBATAIBgZngQwBAgEwCAYGZ4EMAQICMAgGBmeBDAECAzANBgkqhkiG
9w0BAQsFAAOCAQEAkPFwyyiXaZd8dP3A+iZ7U6utzWX9upwGnIrXWkOH7U1MVl+t
wcW1BSAuWdH/SvWgKtiwla3JLko716f2b4gp/DA/JIS7w7d7kwcsr4drdjPtAFVS
slme5LnQ89/nD/7d+MS5EHKBCQRfz5eeLjJ1js+aWNJXMX43AYGyZm0pGrFmCW3R
bpD0ufovARTFXFZkAdl9h6g4U5+LXUZtXMYnhIHUfoyMo5tS58aI7Dd8KvvwVVo4
chDYABPPTHPbqjc1qCmBaZx2vN4Ye5DUys/vZwP9BFohFrH/6j/f3IL16/RZkiMN
JCqVJUzKoZHm1Lesh3Sz8W2jmdv51b2EQJ8HmA==
-----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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