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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

ismo.com.sg · 103.120.19.48:443

Verified

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

Subject
CN=*.ismo.com.sg
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=RapidSSL TLS RSA CA G1
Valid from
2026-01-08T00:00:00+00:00
Expires
2027-01-19T23:59:59+00:00
Days remaining
106
Serial (hex)
0FD46208A0B3FE6686C8F8A3F1F5699E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.ismo.com.sg, DNS:ismo.com.sg

SHA-256 fingerprint

EF:4B:5D:38:3F:D8:17:85:06:AD:51:F0:09:32:70:C2:9A:41:47:84:F3:1A:E9:52:11:E4:36:C0:B2:24:7E:76
Certificate extensions & PEM
authorityKeyIdentifier
0C:DB:6C:82:49:0F:4A:67:0A:B8:14:EE:7A:C4:48:52:88:EB:56:38
subjectKeyIdentifier
CD:C5:A8:70:5D:F6:2D:F8:65:EA:72:71:2F:A1:1D:69:16:55:FE:7E
subjectAltName
DNS:*.ismo.com.sg, DNS:ismo.com.sg
certificatePolicies
Policy: 2.23.140.1.2.1 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.rapidssl.com/RapidSSLTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.rapidssl.com CA Issuers - URI:http://cacerts.rapidssl.com/RapidSSLTLSRSACAG1.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 : Jan 8 00:59:42.152 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:8E:CA:88:8D:CE:6B:39:4E:9C:C6:97: 21:75:B6:D6:B3:89:34:EB:4B:33:05:4C:2D:DA:32:81: AB:2A:A4:A2:3B:02:21:00:AB:A5:2E:E6:0D:0F:5A:E6: 68:41:92:79:79:52:D0:10:EA:A4:C0:0F:23:19:3C:D0: 49:D4:1E:DF:E7:B8:A9:6F Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Jan 8 00:59:42.193 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:33:27:41:D2:77:F8:3D:77:A1:81:D0:B6: EA:59:ED:0F:FD:D6:3F:6D:22:6A:B9:67:30:C3:78:14: CE:3D:BF:A7:02:20:29:24:AD:42:F5:88:61:23:93:2F: E8:ED:23:C8:21:76:7B:BC:74:9D:1A:57:15:D9:46:4F: BF:20:3A:45:53:D8 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Jan 8 00:59:42.338 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:B3:94:CE:B6:E0:4F:62:D2:2A:3D:75: C2:25:EE:31:3E:B4:9B:1B:AB:AA:F7:C6:BE:8A:9B:7B: 7D:80:60:19:52:02:20:78:8A:B9:6F:2A:8D:CF:B6:78: 50:5F:75:FD:DC:AF:8D:CD:FC:5A:48:7B:D8:DA:B4:DE: 9A:84:17:AB:24:73:37
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-05T06:29:30+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=RapidSSL TLS RSA CA G1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2017-11-02T12:24:33+00:00
Expires
2027-11-02T12:24:33+00:00
Days remaining
393
Serial (hex)
0B259422CED9812A15A04E99528A0EFA
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

44:22:E9:63:EE:53:CD:58:CC:9F:85:CD:40:BF:5F:FE:C0:09:5F:DF:1A:15:45:35:66:1C:1C:06:BC:AD:C6:9B
Certificate extensions & PEM
subjectKeyIdentifier
0C:DB:6C:82:49:0F:4A:67:0A:B8:14:EE:7A:C4:48:52:88:EB:56:38
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: 2.16.840.1.114412.1.1 CPS: https://www.digicert.com/CPS Policy: 2.16.840.1.114412.1.2 Policy: 2.23.140.1.2.1 Policy: 2.23.140.1.2.2
-----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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