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

cirt.cm · 154.126.128.31:443

Verified

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

Subject
CN=*.cirt.cm
Issuer
C=CM O=National Agency for Information and Communication Technologies CN=ANTIC DV CA
Valid from
2025-11-07T08:42:45+00:00
Expires
2026-11-07T08:42:44+00:00
Days remaining
40
Serial (hex)
0A4A12CE0D3CD933984FC5B4492C4A2F
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.cirt.cm, DNS:cirt.cm

SHA-256 fingerprint

01:F3:D8:3E:80:65:80:B6:2E:DC:3D:FF:5F:E6:37:19:53:AA:5E:85:C2:A9:BB:F3:27:CE:EB:93:6D:19:6B:94
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
0A:31:BF:39:9F:84:DD:12:BD:5D:6E:CA:3A:37:98:E5:6A:39:17:A1
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:*.cirt.cm, DNS:cirt.cm
ct_precert_scts
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 7 08:42:46.262 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:A4:A0:1A:ED:1F:F9:1F:36:39:42:69: 2F:D4:D5:CC:E0:D2:89:CE:32:05:E4:E8:C7:F0:CD:9D: 5C:C7:EF:BB:83:02:21:00:87:AA:9D:BC:78:A9:E9:09: C3:05:DA:36:C4:03:05:99:96:92:EA:AA:32:2C:0C:A4: 41:CF:32:68:96:8C:F0:8C 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 7 08:42:46.300 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:67:77:19:21:78:07:0B:3D:7F:50:8B:65: 76:C1:82:25:A7:67:23:78:C9:10:60:23:6E:73:BC:C4: 67:71:02:D2:02:20:3F:E2:54:7A:A4:FD:03:CF:85:EB: 88:50:B5:29:C2:86:56:5C:E7:2A:33:B3:63:F4:56:A5: 01:21:3C:FE:07:B2 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 7 08:42:46.273 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:C8:E1:91:2E:9E:62:84:90:C7:1D:5E: 21:B3:02:26:1B:2C:34:F2:E0:25:90:3D:FC:88:7F:4F: 63:EE:BC:6C:E4:02:21:00:EA:74:DD:86:D0:8C:FF:18: 67:A7:B8:02:CD:C3:EF:81:21:39:06:83:88:3C:F3:EB: 34:E7:D6:57:9A:CA:B4:1A
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-27T15:53:32+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
245
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
254
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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