DNS
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

cmctelecom.vn · 101.99.57.75:443

Verified

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

Subject
C=VN ST=Ha Noi L=Ha Noi O=CMC TELECOMMUNICATION INFRASTRUCTURE CORPORATION CN=*.cmctelecom.vn
Issuer
C=BE O=GlobalSign nv-sa CN=GlobalSign GCC R46 OV TLS CA 2025
Valid from
2026-08-14T05:59:41+00:00
Expires
2027-03-01T05:59:41+00:00
Days remaining
150
Serial (hex)
77BE200E800B5FBF62DA0FCE
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.cmctelecom.vn, DNS:owa.cmctelecom.vn, DNS:mail.cmctelecom.vn, DNS:autodiscover.cmctelecom.vn, DNS:www.cmctelecom.vn, DNS:cmctelecom.vn

SHA-256 fingerprint

46:53:D7:82:1F:25:5E:20:67:43:C4:97:BB:D9:59:9E:0D:74:C4:61:97:AF:ED:24:D5:03:CD:FB:4E:23:44:61
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
authorityInfoAccess
CA Issuers - URI:http://secure.globalsign.com/cacert/gsgccr46ovtlsca2025.crt OCSP - URI:http://ocsp.globalsign.com/gsgccr46ovtlsca2025
certificatePolicies
Policy: 2.23.140.1.2.2
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/gsgccr46ovtlsca2025.crl
subjectAltName
DNS:*.cmctelecom.vn, DNS:owa.cmctelecom.vn, DNS:mail.cmctelecom.vn, DNS:autodiscover.cmctelecom.vn, DNS:www.cmctelecom.vn, DNS:cmctelecom.vn
authorityKeyIdentifier
69:74:3E:AF:C3:5B:01:95:49:EE:14:41:5A:93:FA:B1:30:98:DA:A2
extendedKeyUsage
TLS Web Server Authentication
subjectKeyIdentifier
DD:45:B1:F7:54:77:D0:E5:F4:D4:C2:D3:67:77:D4:70:4F:CF:42:27
ct_precert_scts
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 : Aug 14 05:59:47.090 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:2D:59:B1:64:21:26:AA:91:EA:D8:2F:F8: E9:A5:50:8C:A9:26:CA:97:DE:F3:E4:D7:F7:F2:28:2A: 0F:7B:9E:77:02:20:4E:5E:44:38:92:38:D6:66:9D:73: E6:BE:3F:7B:54:D6:6C:10:40:6A:9C:A9:78:74:AD:B5: B1:E0:F1:91:F7:C4 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 : Aug 14 05:59:46.908 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:93:7D:C5:D6:AC:AF:CA:0F:B3:47:D4: 72:B2:09:2E:76:44:67:BF:BB:E7:4C:68:E0:DF:B9:63: F7:64:AC:03:FD:02:20:05:69:59:2F:FE:FC:A3:86:06: 79:DC:2A:88:FA:49:05:8E:22:92:53:BB:25:E2:28:15: 89:04:4E:BA:32:E9:4A 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 : Aug 14 05:59:46.904 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:C9:B0:1A:C0:3B:F3:47:7F:A6:29:FC: 16:D4:FA:D1:0D:C3:8E:61:B0:61:04:7A:1B:00:40:1B: 07:FD:4A:16:B8:02:21:00:A7:85:3E:22:86:DF:BA:92: 46:7B:FB:BE:06:9A:56:BA:99:3D:00:49:30:1A:11:FB: 7D:07:EC:C8:17:3D:AE:68
-----BEGIN CERTIFICATE-----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OgYIKwYBBQUHMAGGLmh0dHA6Ly9vY3NwLmdsb2JhbHNpZ24uY29tL2dzZ2NjcjQ2
b3Z0bHNjYTIwMjUwEwYDVR0gBAwwCjAIBgZngQwBAgIwQgYDVR0fBDswOTA3oDWg
M4YxaHR0cDovL2NybC5nbG9iYWxzaWduLmNvbS9nc2djY3I0Nm92dGxzY2EyMDI1
LmNybDB/BgNVHREEeDB2gg8qLmNtY3RlbGVjb20udm6CEW93YS5jbWN0ZWxlY29t
LnZughJtYWlsLmNtY3RlbGVjb20udm6CGmF1dG9kaXNjb3Zlci5jbWN0ZWxlY29t
LnZughF3d3cuY21jdGVsZWNvbS52boINY21jdGVsZWNvbS52bjAfBgNVHSMEGDAW
gBRpdD6vw1sBlUnuFEFak/qxMJjaojATBgNVHSUEDDAKBggrBgEFBQcDATAdBgNV
HQ4EFgQU3UWx91R30OX01MLTZ3fUcE/PQicwggF+BgorBgEEAdZ5AgQCBIIBbgSC
AWoBaAB1AByfaCzp+vBFaVD4G5aKh93bMhDYTObIsuOCUkrEz1mfAAABn/7a6JIA
AAQDAEYwRAIgLVmxZCEmqpHq2C/46aVQjKkmypfe8+TX9/IoKg97nncCIE5eRDiS
ONZmnXPmvj97VNZsEEBqnKl4dK21seDxkffEAHYATGPcmOWcHauI9h6KPd6uj6tE
ozd7X5uUw/uhnPzBviYAAAGf/trn3AAABAMARzBFAiEAk33F1qyvyg+zR9Rysgku
dkRnv7vnTGjg37lj92SsA/0CIAVpWS/+/KOGBnncKoj6SQWOIpJTuyXiKBWJBE66
MulKAHcAYEyar3p/d18B1Ab8kg3ImesLHH34yVIb+voXdzuXi8kAAAGf/trn2AAA
BAMASDBGAiEAybAawDvzR3+mKfwW1PrRDcOOYbBhBHobAEAbB/1KFrgCIQCnhT4i
ht+6kkZ7+74Gmla6mT0ASTAaEft9B+zIFz2uaDANBgkqhkiG9w0BAQsFAAOCAQEA
mj53FoeR+bOcAAEii8GwZ51DwvfLUxtdME1/QtYeGUkC6D21VrfnGYRtZmAV+EP9
f+t6HOlHRh+YwTYQtPMghwpTZO032jBNkTiFpdnM7EEZ5Dl96pnkKas1JhLanqMO
TUWJnKmH8cL4Ep66TRyZzi1rYsG3qZJjiVCR2r+1OnD1J09sVG6aN+iCeoKcOIBL
bW/BZ27gePE8AGQTE+6vgssTFsVgX1ngxsevJbdrHKaN6eFCwNskeumh9OD6djwo
tgu+Ap41dsOg+TmCNaDg23mEFXrs/OOkrCuwSGPuC4o1YzEyA23PHLoSBGE/qZb9
4vkgnWexk//klBhd9V91Gg==
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-01T12:08:53+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=BE O=GlobalSign nv-sa CN=GlobalSign GCC R46 OV TLS CA 2025
Issuer
C=BE O=GlobalSign nv-sa CN=GlobalSign Root R46
Valid from
2025-09-17T02:55:56+00:00
Expires
2029-06-23T00:00:00+00:00
Days remaining
995
Serial (hex)
84435890836F67394182CB9C9A5DC99F
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

D1:60:E2:DE:4E:56:CB:10:B6:6C:1C:B0:AD:CB:79:CF:93:C7:8D:CD:9D:B3:0C:20:18:22:02:62:C0:40:63:F9
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
69:74:3E:AF:C3:5B:01:95:49:EE:14:41:5A:93:FA:B1:30:98:DA:A2
authorityKeyIdentifier
03:5C:AB:73:81:87:A8:CC:B0:A6:D5:94:E2:36:96:49:FF:05:99:2C
authorityInfoAccess
OCSP - URI:http://ocsp.globalsign.com/rootr46 CA Issuers - URI:http://secure.globalsign.com/cacert/rootr46.crt
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/rootr46.crl
certificatePolicies
Policy: 2.23.140.1.2.2 Policy: 1.3.6.1.4.1.4146.10.1.2
-----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.

View certificate JSON

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