DNS
SSL certificate
TLSvnpt.com.vn · 123.31.36.235:443
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages:
error:0A00018A:SSL routines::dh key too small
Certificate verification failed
- Subject
- C=VN ST=Ha Noi L=Ha Noi O=VIETNAM POSTS AND TELECOMMUNICATIONS GROUP CN=*.vnpt.com.vn
- Issuer
- C=BE O=GlobalSign nv-sa CN=GlobalSign GCC R46 OV TLS CA 2025
- Valid from
- 2026-08-19T04:24:10+00:00
- Expires
- 2027-03-06T04:24:10+00:00
- Days remaining
- 151
- Serial (hex)
- 1329F168545A122B4637CB9D
- Signature
- RSA-SHA256
- Public key
- RSA 2048
Subject alternative names (SAN)
DNS:*.vnpt.com.vn, DNS:www.vnpt.com.vn, DNS:owa.vnpt.com.vn, DNS:mail.vnpt.com.vn, DNS:autodiscover.vnpt.com.vn, DNS:vnpt.com.vn
SHA-256 fingerprint
82:40:B9:1B:19:A5:B0:61:BD:77:D6:8C:FA:BF:DF:BA:8E:CC:67:2A:FC:EF:0C:44:E4:87:F4:27:64:89:27:D0
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:*.vnpt.com.vn, DNS:www.vnpt.com.vn, DNS:owa.vnpt.com.vn, DNS:mail.vnpt.com.vn, DNS:autodiscover.vnpt.com.vn, DNS:vnpt.com.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
- 33:BE:94:39:BE:33:05:09:08:3F:1A:A7:56:48:3C:58:BE:86:06:27
- 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 19 04:24:20.628 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:EC:B0:07:59:B4:A5:92:61:4A:38:7A: FF:2A:F1:8C:B5:A0:45:AC:0A:AE:59:CA:39:C0:AF:AC: 3F:69:46:A9:C2:02:20:30:C5:30:4A:10:54:B3:8A:80: 03:81:D5:F5:B6:A1:43:9E:11:44:11:BF:76:48:75:F7: 41:8E:B1:3F:DC:91:C0 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 19 04:24:19.950 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:10:14:FA:96:A1:35:22:13:E7:6F:7C:7F: CA:F7:BF:86:67:B4:5F:A6:3A:11:64:BA:C4:4E:4A:B6: 0F:36:D9:03:02:20:13:CB:FF:8A:20:49:25:77:DF:BB: 4E:8C:EF:41:C0:1C:D5:2A:54:F8:78:B3:8E:A2:82:BA: AB:E2:79:E7:4E:5E 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 19 04:24:20.435 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:E1:11:6F:B1:9B:52:3F:43:66:CC:87: 5C:08:28:44:5F:0A:49:8E:08:64:D7:05:01:E3:5F:C6: D1:05:30:44:53:02:20:0C:75:CF:0D:FD:D6:A6:CF:BA: 3A:87:B2:91:34:88:83:36:CF:9B:28:02:22:C4:D8:84: 1A:E9:1E:2A:D8:A5:A1
-----BEGIN CERTIFICATE----- MIIGtjCCBZ6gAwIBAgIMEynxaFRaEitGN8udMA0GCSqGSIb3DQEBCwUAMFQxCzAJ BgNVBAYTAkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMSowKAYDVQQDEyFH bG9iYWxTaWduIEdDQyBSNDYgT1YgVExTIENBIDIwMjUwHhcNMjYwODE5MDQyNDEw WhcNMjcwMzA2MDQyNDEwWjB8MQswCQYDVQQGEwJWTjEPMA0GA1UECBMGSGEgTm9p MQ8wDQYDVQQHEwZIYSBOb2kxMzAxBgNVBAoTKlZJRVROQU0gUE9TVFMgQU5EIFRF TEVDT01NVU5JQ0FUSU9OUyBHUk9VUDEWMBQGA1UEAwwNKi52bnB0LmNvbS52bjCC ASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAKlUhHyzv6GD+vrwHdI/cEcj v7y6nJCUIPNNy7Dn9e0bs9O5Ki7I33kDJt7OlN4R1195CSp2RK/w8sSQU9cMv3HD 9O1ac37PZxxl5gofT6DKbCvnTWJF730SnZkonE/2WW6QxAM84GI7mz5f2wpEe6Wd Iozj2X0HdCHDbmEoy79juX9l5HqkpsXFySg4miMvE35LCWKOtYSCG9cJwALr4ZcL 8Pm9cZ2ThVk5Uj+b5uDmtZJZ02vx/35XNXx8W5FnUwjzKBgaURWx1Uf81ZznYleN qvoXE2DgRc8KU09In/MHhdKggiSaqVjFJ6IR4gfzRFC8jcYmGBL6xw0q9+tMrIkC AwEAAaOCA14wggNaMA4GA1UdDwEB/wQEAwIFoDAMBgNVHRMBAf8EAjAAMIGVBggr BgEFBQcBAQSBiDCBhTBHBggrBgEFBQcwAoY7aHR0cDovL3NlY3VyZS5nbG9iYWxz aWduLmNvbS9jYWNlcnQvZ3NnY2NyNDZvdnRsc2NhMjAyNS5jcnQwOgYIKwYBBQUH MAGGLmh0dHA6Ly9vY3NwLmdsb2JhbHNpZ24uY29tL2dzZ2NjcjQ2b3Z0bHNjYTIw MjUwEwYDVR0gBAwwCjAIBgZngQwBAgIwQgYDVR0fBDswOTA3oDWgM4YxaHR0cDov L2NybC5nbG9iYWxzaWduLmNvbS9nc2djY3I0Nm92dGxzY2EyMDI1LmNybDBzBgNV HREEbDBqgg0qLnZucHQuY29tLnZugg93d3cudm5wdC5jb20udm6CD293YS52bnB0 LmNvbS52boIQbWFpbC52bnB0LmNvbS52boIYYXV0b2Rpc2NvdmVyLnZucHQuY29t LnZuggt2bnB0LmNvbS52bjAfBgNVHSMEGDAWgBRpdD6vw1sBlUnuFEFak/qxMJja ojATBgNVHSUEDDAKBggrBgEFBQcDATAdBgNVHQ4EFgQUM76UOb4zBQkIPxqnVkg8 WL6GBicwggF9BgorBgEEAdZ5AgQCBIIBbQSCAWkBZwB2AByfaCzp+vBFaVD4G5aK h93bMhDYTObIsuOCUkrEz1mfAAABoBhDU5QAAAQDAEcwRQIhAOywB1m0pZJhSjh6 /yrxjLWgRawKrlnKOcCvrD9pRqnCAiAwxTBKEFSzioADgdX1tqFDnhFEEb92SHX3 QY6xP9yRwAB1AExj3JjlnB2riPYeij3ero+rRKM3e1+blMP7oZz8wb4mAAABoBhD UO4AAAQDAEYwRAIgEBT6lqE1IhPnb3x/yve/hme0X6Y6EWS6xE5Ktg822QMCIBPL /4ogSSV337tOjO9BwBzVKlT4eLOOooK6q+J5505eAHYAYEyar3p/d18B1Ab8kg3I mesLHH34yVIb+voXdzuXi8kAAAGgGENS0wAABAMARzBFAiEA4RFvsZtSP0NmzIdc CChEXwpJjghk1wUB41/G0QUwRFMCIAx1zw391qbPujqHspE0iIM2z5soAiLE2IQa 6R4q2KWhMA0GCSqGSIb3DQEBCwUAA4IBAQAzwQsw0S6nVGQkn+dE0Bf8yjd2Gvp7 oiIoDWBt+mTEs8r9cijHyYvTQo3ov5ogcu8YMKBDBntCj/gdPG+y6BpLlrj+dvwg lWg56veatBRt000E4mHJb1rMyTGxUZbaydtKAfNrQVYniZ47JrJSWs9g5vInjIwN G82NVjQdLhfi9paRvsqckxY3wsltyyG6WOV4VBwVPpcKFqrS8m+d8vpv4LfQBKIB QyT67pWlG5/tHZfhTOA8FHVJ/SFJ86QidAfqJicfpaRp8YArlu1HdjoSQiw0H9Oa ehzCqammgUJljT5GBcWFLOkDYfSbCioCpRviaOTyQhjcWRAFpiL8FO+6 -----END CERTIFICATE-----
Cipher: Unavailable · Checked 2026-10-06T04:11:55+00:00
Server-presented chain · 2 additional certificates
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
- 990
- 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----- MIIFfDCCA2SgAwIBAgIRAIRDWJCDb2c5QYLLnJpdyZ8wDQYJKoZIhvcNAQELBQAw RjELMAkGA1UEBhMCQkUxGTAXBgNVBAoTEEdsb2JhbFNpZ24gbnYtc2ExHDAaBgNV BAMTE0dsb2JhbFNpZ24gUm9vdCBSNDYwHhcNMjUwOTE3MDI1NTU2WhcNMjkwNjIz MDAwMDAwWjBUMQswCQYDVQQGEwJCRTEZMBcGA1UEChMQR2xvYmFsU2lnbiBudi1z YTEqMCgGA1UEAxMhR2xvYmFsU2lnbiBHQ0MgUjQ2IE9WIFRMUyBDQSAyMDI1MIIB IjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1JyrGiv+210Lw4LTp9qxx9WC o6w8HnxcTKr5XwR6WwtKidGXriLqGXtBINGTi4HUZ1Vl3FUIvscLwNcq2DRLwjWs cYFNClVnuSw4CtwAcfa7Iltz+0FmFeh/KOWv5BfgCxAo9FaeXRG725b2eedo/7fb 0zBc6M/XcfQREVteZ6GovnLE96+T8RzRImvX38Y8vZoulp/XWv3p09C1pgp/53+1 itDl7xbrM4sglGNkeJ5LBN2dOR1sqWCMZ/V4a4cPQwopBtZis1vVh7/k4S6Ysgk0 CTi5vei0RSEIhxoFk48BHSXzTA4FJxqjfauYCZ4M5tmZ/R5VgXOZ4Ck/PifnXQID AQABo4IBVTCCAVEwDgYDVR0PAQH/BAQDAgGGMBMGA1UdJQQMMAoGCCsGAQUFBwMB MBIGA1UdEwEB/wQIMAYBAf8CAQAwHQYDVR0OBBYEFGl0Pq/DWwGVSe4UQVqT+rEw mNqiMB8GA1UdIwQYMBaAFANcq3OBh6jMsKbVlOI2lkn/BZksMHsGCCsGAQUFBwEB BG8wbTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuZ2xvYmFsc2lnbi5jb20vcm9v dHI0NjA7BggrBgEFBQcwAoYvaHR0cDovL3NlY3VyZS5nbG9iYWxzaWduLmNvbS9j YWNlcnQvcm9vdHI0Ni5jcnQwNgYDVR0fBC8wLTAroCmgJ4YlaHR0cDovL2NybC5n bG9iYWxzaWduLmNvbS9yb290cjQ2LmNybDAhBgNVHSAEGjAYMAgGBmeBDAECAjAM BgorBgEEAaAyCgECMA0GCSqGSIb3DQEBCwUAA4ICAQBEUTiKxe5jEintARUvLBm9 qWZtGiOSV9E+3bntbFFBDBAroqwB6Cj53Zp/W08HwgxaPXdkVaRNYHB/eAatEtSm 1ldtoorfPc+mVlzbwCwfbpIs2uqW5rF78ne37qy2o+iVnJptq9AzPnlC03+zhhB9 JwmjUXVtPuqQZ96tFl0fAT77xGSLzCO8yfEDrxCqdWz2wneShSbCCsC15JB07OgO StE+MsVBkwe5+PNzAlAr8NZ6f8mzeY/FzaBzlhYw5+c1yyzXJqp+gjRXWrLpD3Ho hGOvIXIvCBnyVrYI/HPe6DR5w7oteui9Rt0xfUUudaTkt0iz7fc23eGboZ+bpvgT gbd/kYK6JOrxawMyfBYxrR5zDHIJX0Mws99DNgACKBUfFadKAfwFw0+0airY5WAI Xs8yhCb5XGwyzVpcB30BrQbWtqdI0PoE9usNvNbH3YFGfuS8oRmAJEgUUQnwOoGK jMWtHacw0n8QESdRM274LJvLd9nwawYU4svJpf06FtKPqGH3nXefL741NO9KzDAG PM11YScyJVfYdBDXFM86HU1fBGTKlkLcG/qMJxOqppY4wydRI3koSH6A78nO2QaJ yqjTOQyCNHaSlmGjdiOvhJ8y1PiazHnuvWBx6z+7JJF2ukqqfjlSARwyfkfnRUIY la7ZYEqcc56eoPAiElhvrg== -----END CERTIFICATE-----
Chain certificate 2
- Subject
- C=BE O=GlobalSign nv-sa CN=GlobalSign Root R46
- Issuer
- OU=GlobalSign Root CA - R3 O=GlobalSign CN=GlobalSign
- Valid from
- 2019-11-20T00:00:00+00:00
- Expires
- 2029-03-18T00:00:00+00:00
- Days remaining
- 893
- Serial (hex)
- 75A8BAD878F8AF305F72DD1C1140DF3A
- Signature
- RSA-SHA384
- Public key
- RSA 4096
Subject alternative names (SAN)
No SAN extension was presented.
SHA-256 fingerprint
A6:3C:13:98:B5:F8:DD:2D:43:2F:BE:4C:2C:19:14:2B:EA:6D:5D:02:21:FA:E7:94:71:8A:E7:59:7A:CC:A9:6D
Certificate extensions & PEM
- keyUsage
- Digital Signature, Certificate Sign, CRL Sign
- basicConstraints
- CA:TRUE
- subjectKeyIdentifier
- 03:5C:AB:73:81:87:A8:CC:B0:A6:D5:94:E2:36:96:49:FF:05:99:2C
- authorityKeyIdentifier
- 8F:F0:4B:7F:A8:2E:45:24:AE:4D:50:FA:63:9A:8B:DE:E2:DD:1B:BC
- authorityInfoAccess
- OCSP - URI:http://ocsp2.globalsign.com/rootr3
- crlDistributionPoints
- Full Name: URI:http://crl.globalsign.com/root-r3.crl
- certificatePolicies
- Policy: X509v3 Any Policy CPS: https://www.globalsign.com/repository/
-----BEGIN CERTIFICATE----- MIIFRDCCBCygAwIBAgIQdai62Hj4rzBfct0cEUDfOjANBgkqhkiG9w0BAQwFADBM MSAwHgYDVQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xv YmFsU2lnbjETMBEGA1UEAxMKR2xvYmFsU2lnbjAeFw0xOTExMjAwMDAwMDBaFw0y OTAzMTgwMDAwMDBaMEYxCzAJBgNVBAYTAkJFMRkwFwYDVQQKExBHbG9iYWxTaWdu IG52LXNhMRwwGgYDVQQDExNHbG9iYWxTaWduIFJvb3QgUjQ2MIICIjANBgkqhkiG 9w0BAQEFAAOCAg8AMIICCgKCAgEArKx0MuizZeW67UMmHaaJDUW6KYiypB1j3dPB LAlXiTmhVelnNHcMbuRVHVIl0hNrXuEdqbd9iTJfDZ6fLHpjYEAfprC2eI+ZVJYI WK7kBrxiBQIWv6+oIwO2lA+8bmzCy9Wmuwzp9sEC+yHeZt0Xq3RC7/B0LyX06mtV W5Dbnd9ehwpA+60Za/v3ymCI3trBj9au1X/UPIPu1xZMg0UzayfQhtAcLWvzq33x han1KNKt7/OESxyH/BOjOnKiWhEr1idxJ+2BLW1mgZKHtBtYesw/CvpGT014XPgr SOMEhMtd9rRqs2X8Qp5RJiMgyz0U+YHtZRYATxpkl2YIz4x74yvAnfkU8hvxVmoW vyyFhc14OJrrQmoCNBiDF06UVvi2grXzlt09875/IHc+exkjayzUcnNDV33g+Ndp Txc2BPnAkGA3Rd7mDNh0ja6com10XUK+BvXZZG4CEKyJsEw7B01AfiTFipiCeY6k p4IgjSP6J3HJ38ZBdKBN9pEW3EaMXyljMVlxDNhvwrYyffvmXVOmfhX8u3V8Xez4 9hcc7MdrGcvze/ArB6XZbHlUdmydHKZuDul5DKgjaqPfGzAxn7FUe/5qy2aq3GXQ op5Kmgcha4GP28RZ+t4iwASc46pbNpPoPb16oZ0LdrELx539z5ioBsL4KqOhg6C3 JXKlAuMCAwEAAaOCASYwggEiMA4GA1UdDwEB/wQEAwIBhjAPBgNVHRMBAf8EBTAD AQH/MB0GA1UdDgQWBBQDXKtzgYeozLCm1ZTiNpZJ/wWZLDAfBgNVHSMEGDAWgBSP 8Et/qC5FJK5NUPpjmove4t0bvDA+BggrBgEFBQcBAQQyMDAwLgYIKwYBBQUHMAGG Imh0dHA6Ly9vY3NwMi5nbG9iYWxzaWduLmNvbS9yb290cjMwNgYDVR0fBC8wLTAr oCmgJ4YlaHR0cDovL2NybC5nbG9iYWxzaWduLmNvbS9yb290LXIzLmNybDBHBgNV HSAEQDA+MDwGBFUdIAAwNDAyBggrBgEFBQcCARYmaHR0cHM6Ly93d3cuZ2xvYmFs c2lnbi5jb20vcmVwb3NpdG9yeS8wDQYJKoZIhvcNAQEMBQADggEBAGBD9cJLVP2v gPSlomstHU38guKTe4ELEFOnM9OnuzK2HlzmgVSPdf4Go7r8FZt4+d8lVs7JPt2z THYK/cA1f/DYT56clWZO972GbvjOwmHop4LqAe902mRBxEo966EFsaBqwk8zzexW nPZ29CXHc3doU0wXhIPzch5d18Mp4y1RRjybOODc89QJSBataMU9rIHNTF6rePxw gL4/k/zrGiCRCRJ+iblTL/WIhm0ENfNJMTxlbMHxPYH4aiHarVBXpXPkiZ/85knD XNcnTUTZKEtY6xJExiC+5IHDjdnWz/V2d8MkQx+o7TPbwgF/SVcYcp0GPJG6RkLD rkNz7Wn9gck= -----END CERTIFICATE-----
One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.