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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

nic.cm · 41.204.76.228:443

Verified

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

Subject
CN=nic.cm
Issuer
C=CM O=National Agency for Information and Communication Technologies CN=ANTIC DV CA
Valid from
2025-11-19T11:42:00+00:00
Expires
2026-11-19T11:41:59+00:00
Days remaining
56
Serial (hex)
4DF889CC000941C764BB0C383AB37864
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:nic.cm

SHA-256 fingerprint

A4:B3:CF:C1:AD:81:38:1B:C8:44:04:1C:B9:E9:B9:2A:73:2E:5A:3E:F3:8F:03:D2:91:93:CD:DC:50:59:F6:0E
Certificate extensions & PEM
basicConstraints
CA:FALSE
crlDistributionPoints
Full Name: URI:http://anticdv.crl.certum.pl/anticdv.crl
authorityInfoAccess
OCSP - URI:http://anticdv.ocsp-certum.com CA Issuers - URI:http://repository.certum.pl/anticdv.cer
authorityKeyIdentifier
4D:4D:1A:5D:45:92:91:28:55:70:AD:DA:96:57:E6:1F:D6:48:D8:5A
subjectKeyIdentifier
B8:BD:0F:C5:A9:87:2E:A2:49:2F:52:06:EB:98:0B:F8:91:08:57:68
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.2.616.1.113527.2.5.1.9.43.3 CPS: https://www.certum.pl/CPS
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
keyUsage
Digital Signature, Key Encipherment
subjectAltName
DNS:nic.cm
ct_precert_scts
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 : Nov 19 11:42:16.619 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:7F:5B:42:4E:05:83:52:12:C7:B9:14:38: B9:E9:D7:E2:B9:3A:F4:7D:B2:0F:6A:70:57:26:CF:BD: B9:4D:C1:6B:02:20:78:3B:BB:F1:09:D5:9F:06:BD:76: A0:12:F5:36:D0:A0:70:6E:FA:74:63:6C:38:04:91:CD: 02:29:07:1E:31:33 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : AC:AB:30:70:6C:EB:EC:84:31:F4:13:D2:F4:91:5F:11: 1E:42:24:43:B1:F2:A6:8C:4F:3C:2B:3B:A7:1E:02:C3 Timestamp : Nov 19 11:42:16.793 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:07:03:10:04:D5:7B:29:D8:39:06:0E:06: A5:6B:3F:FC:03:A8:8F:68:22:06:B3:B2:0A:B1:E9:AA: 5E:F5:2B:4A:02:21:00:9E:65:58:A6:BA:20:AD:D3:1C: 2C:FD:35:8A:DC:46:04:90:73:64:BA:A9:5D:82:86:F5: 8B:AC:94:8C:20:1F:50 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 : Nov 19 11:42:16.928 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:59:2A:17:9E:1B:C2:F9:EB:9D:A2:18:93: 99:D5:48:EE:E3:A2:3B:87:A0:25:BB:66:3B:CA:5D:A7: D3:12:C4:E4:02:20:2C:FB:58:09:46:08:14:8D:82:DE: 7A:03:4B:78:74:B5:DD:E7:ED:97:26:CE:87:E1:DA:4F: 5F:D5:A6:80:FD:90
-----BEGIN CERTIFICATE-----
MIIGGDCCBQCgAwIBAgIQTfiJzAAJQcdkuww4OrN4ZDANBgkqhkiG9w0BAQsFADBs
MQswCQYDVQQGEwJDTTFHMEUGA1UECgw+TmF0aW9uYWwgQWdlbmN5IGZvciBJbmZv
cm1hdGlvbiBhbmQgQ29tbXVuaWNhdGlvbiBUZWNobm9sb2dpZXMxFDASBgNVBAMM
C0FOVElDIERWIENBMB4XDTI1MTExOTExNDIwMFoXDTI2MTExOTExNDE1OVowETEP
MA0GA1UEAwwGbmljLmNtMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA
oU3LFzAR+n2/r8CxmrEKWl/FYcQrYavgD7MqD/++Vp/dTRhwYwez806iWfW+hG4I
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fvrtRbTyCWbaj5I90zbseN/ZKm9mcj2v56IGdDbRYEQ+P8AA2x2hcP7PTvomcFYp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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-09-23T13:21:09+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=CM O=National Agency for Information and Communication Technologies CN=ANTIC DV CA
Issuer
C=PL O=Unizeto Technologies S.A. OU=Certum Certification Authority CN=Certum Global Services CA SHA2
Valid from
2022-07-28T08:16:58+00:00
Expires
2027-05-31T08:16:58+00:00
Days remaining
249
Serial (hex)
D32C4556DD4ACFE0284D1368DC83757F
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

E5:3A:69:19:3E:22:FA:EC:C8:33:F8:06:31:BE:15:E0:20:A0:4C:20:BB:67:9F:D3:51:F0:CB:95:C0:08:9E:50
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
4D:4D:1A:5D:45:92:91:28:55:70:AD:DA:96:57:E6:1F:D6:48:D8:5A
authorityKeyIdentifier
54:99:DD:9B:FF:E8:A7:0E:A3:19:9D:5B:BE:42:57:DF:30:FC:8F:32
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
crlDistributionPoints
Full Name: URI:http://subca.crl.certum.pl/gscasha2.crl
authorityInfoAccess
OCSP - URI:http://subca.ocsp-certum.com CA Issuers - URI:http://repository.certum.pl/gscasha2.cer
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.certum.pl/CPS
-----BEGIN CERTIFICATE-----
MIIE6jCCA9KgAwIBAgIRANMsRVbdSs/gKE0TaNyDdX8wDQYJKoZIhvcNAQELBQAw
gYMxCzAJBgNVBAYTAlBMMSIwIAYDVQQKExlVbml6ZXRvIFRlY2hub2xvZ2llcyBT
LkEuMScwJQYDVQQLEx5DZXJ0dW0gQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkxJzAl
BgNVBAMTHkNlcnR1bSBHbG9iYWwgU2VydmljZXMgQ0EgU0hBMjAeFw0yMjA3Mjgw
ODE2NThaFw0yNzA1MzEwODE2NThaMGwxCzAJBgNVBAYTAkNNMUcwRQYDVQQKDD5O
YXRpb25hbCBBZ2VuY3kgZm9yIEluZm9ybWF0aW9uIGFuZCBDb21tdW5pY2F0aW9u
IFRlY2hub2xvZ2llczEUMBIGA1UEAwwLQU5USUMgRFYgQ0EwggEiMA0GCSqGSIb3
DQEBAQUAA4IBDwAwggEKAoIBAQCm0h2/mtvsHQlHa/CNdLZBZXHhzm2q+3Mi9tVX
4/e4NnnQ8c+m1UaXYd53LXYu3Y/ZzIb4G9XuRtIqAkhPD0ytT6jCNH1qq/Mn/Ue9
kryMnW1SaYcML9LWSJxplRfD2p9bjsjrLz+OFZTKHjBV46GtG7a/z953tiO7nXLh
bbcTeLd/Rhr76o35k9lKM3w7qIy/aghDPv8frUBd4jBdIRfUL6DM5pUUJtFkAAot
ZEwm3ORP0HOYZ9hzLabbP/jAygzV+A2dA6Ew0vczscs2O6bJ8EPo+qmOZ8tyRovh
V/4CqIzqTqKj3vR/fY/gXPJvgfkmIRlxX0Ip2njFr0r1C/77AgMBAAGjggFtMIIB
aTASBgNVHRMBAf8ECDAGAQH/AgEAMB0GA1UdDgQWBBRNTRpdRZKRKFVwrdqWV+Yf
1kjYWjAfBgNVHSMEGDAWgBRUmd2b/+inDqMZnVu+QlffMPyPMjAOBgNVHQ8BAf8E
BAMCAQYwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMDgGA1UdHwQxMC8w
LaAroCmGJ2h0dHA6Ly9zdWJjYS5jcmwuY2VydHVtLnBsL2dzY2FzaGEyLmNybDBu
BggrBgEFBQcBAQRiMGAwKAYIKwYBBQUHMAGGHGh0dHA6Ly9zdWJjYS5vY3NwLWNl
cnR1bS5jb20wNAYIKwYBBQUHMAKGKGh0dHA6Ly9yZXBvc2l0b3J5LmNlcnR1bS5w
bC9nc2Nhc2hhMi5jZXIwOgYDVR0gBDMwMTAvBgRVHSAAMCcwJQYIKwYBBQUHAgEW
GWh0dHBzOi8vd3d3LmNlcnR1bS5wbC9DUFMwDQYJKoZIhvcNAQELBQADggEBAJQ0
VjRDMDYMFr93pkNBvwqedwI3tZqT7w3BtFYZsZ79omo/6I11+M079lqIEWtvkHOS
bezYaUieO1Y3ZUSqBM/56UJ0k3JuUGZKlmX91pdQC+Rj5SNpu9P3/vYpxlCgTfzO
Bdp0Iprc3MmDtnB+GYI+hB01dj0yTg+Eh1OmXDnsO1+1Oajmx61NtdcI0gEXbh+U
vG9nEXTmJabiAuAoiyFEkCrz+dHuqddsH4rFTjfRU7j+QA8GpW3B1ZJfz28IgBkk
ajeLyxn1xxsUDDWdoAvHL1SJdhS9KmYbbyqzMlfr6wZ9SIy+UzAWiDcqCm3hPJIE
P6Shcm6CpgG2VAov3lw=
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=PL O=Unizeto Technologies S.A. OU=Certum Certification Authority CN=Certum Global Services CA SHA2
Issuer
C=PL O=Unizeto Technologies S.A. OU=Certum Certification Authority CN=Certum Trusted Network CA
Valid from
2014-09-11T12:00:00+00:00
Expires
2027-06-09T10:46:39+00:00
Days remaining
258
Serial (hex)
D04B6FE5DD5BD221E7C74CF6468B3146
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

9E:85:2C:59:DF:C6:FD:6A:BD:4E:17:EA:80:B5:F4:E5:6F:C0:41:92:D1:07:25:8D:54:DA:8A:92:52:86:70:D6
Certificate extensions & PEM
basicConstraints
CA:TRUE
subjectKeyIdentifier
54:99:DD:9B:FF:E8:A7:0E:A3:19:9D:5B:BE:42:57:DF:30:FC:8F:32
authorityKeyIdentifier
08:76:CD:CB:07:FF:24:F6:C5:CD:ED:BB:90:BC:E2:84:37:46:75:F7
keyUsage
Certificate Sign, CRL Sign
crlDistributionPoints
Full Name: URI:http://crl.certum.pl/ctnca.crl
authorityInfoAccess
OCSP - URI:http://subca.ocsp-certum.com CA Issuers - URI:http://repository.certum.pl/ctnca.cer
certificatePolicies
Policy: X509v3 Any Policy CPS: http://www.certum.pl/CPS
-----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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