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

TLSv1.2

promo.it · 212.78.2.68:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed
The certificate has expired.

Certificate verification failed

Subject
CN=*.promo.it
Issuer
C=IT ST=Bergamo L=Ponte San Pietro O=Actalis S.p.A. CN=Actalis Domain Validation Server CA G3
Valid from
2025-08-05T11:14:56+00:00
Expires
2026-08-05T11:14:56+00:00
Days remaining
-56
Serial (hex)
4595664CE8C02263771BA8C56B438942
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:promo.it, DNS:*.promo.it

SHA-256 fingerprint

7B:DC:54:B7:3A:29:66:96:97:C9:CE:4C:1A:7B:65:23:26:59:DC:3B:04:C9:C0:73:BB:08:84:18:DF:42:03:C2
Certificate extensions & PEM
basicConstraints
CA:FALSE
authorityKeyIdentifier
42:83:6D:80:7C:09:84:67:FD:80:57:AB:F1:26:F5:77:C8:22:82:71
authorityInfoAccess
CA Issuers - URI:http://cacert.actalis.it/certs/actalis-autdvg3 OCSP - URI:http://ocsp06.actalis.it/VA/AUTHDV-G3
subjectAltName
DNS:promo.it, DNS:*.promo.it
certificatePolicies
Policy: 1.3.159.1.23.1 CPS: https://www.actalis.it/area-download Policy: 2.23.140.1.2.1
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl06.actalis.it/Repository/AUTHDV-G3/getLastCRL
subjectKeyIdentifier
8C:25:B6:EE:2B:DE:AA:33:61:1F:83:7D:30:4A:06:00:A5:36:C9:9C
keyUsage
Digital Signature, Key Encipherment
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 : Aug 5 11:24:57.590 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:32:76:1F:11:5E:6B:4C:62:02:B2:6D:7D: E8:D9:EF:E2:F2:C5:B8:8E:43:BD:08:54:F8:16:4D:B7: 00:11:59:80:02:20:22:E5:CF:B2:48:6B:50:DB:12:FA: 8F:CA:04:82:73:66:4D:41:62:7A:73:E8:94:2A:CC:DD: FF:28:66:32:BE:1C Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D8:09:55:3B:94:4F:7A:FF:C8:16:19:6F:94:4F:85:AB: B0:F8:FC:5E:87:55:26:0F:15:D1:2E:72:BB:45:4B:14 Timestamp : Aug 5 11:24:57.472 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:8A:72:96:1B:B4:9D:E7:8A:A9:C6:BF: 6C:1B:B5:F1:54:64:07:44:31:87:9C:A0:43:5F:9B:36: 5A:D3:84:1D:C3:02:20:20:B4:71:BF:F2:20:E2:62:4C: 23:55:99:BD:97:38:21:F2:8C:EE:90:D4:61:D6:14:C0: 5E:E6:8C:9D:7A:40:48 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 94:B1:C1:8A:B0:D0:57:C4:7B:E0:AC:04:0E:1F:2C:BC: 8D:C3:75:72:7B:C9:51:F2:0A:52:61:26:86:3B:A7:3C Timestamp : Aug 5 11:24:57.626 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:5E:B4:1B:BF:1F:10:50:76:67:F6:ED:A8: AC:F2:95:DE:73:1A:1B:D2:B6:47:C9:82:F9:A8:B2:57: D0:BF:4F:8A:02:20:14:27:41:70:9B:BA:87:CE:4D:3B: 2D:85:D1:87:9C:28:AC:3A:A4:E3:52:4B:01:F7:61:42: 80:5A:0F:B6:67:5A
-----BEGIN CERTIFICATE-----
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mwcfnGloa6TN4gzUsSZDJTnnGV2+X5lr
-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-09-29T22:57:20+00:00

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

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