SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

open.it

SSL/TLS Certificate

WhoisRDAPDNS RecordsCertificateUptimeDiagnosticsHistoryHide Contact Info

SSL/TLS Certificate for open.it

Valid
Issued by (CA)
Let's Encrypt
Subject
open.it
Valid from
Jul 15, 2026
Valid until
Oct 13, 2026 (85 days remaining)
Public key
RSA 2048-bit
Serial
057BE9AF3301ED4B74DDF4341E6073356000
SHA-256 fingerprint
EC:FD:14:A7:8C:F9:B0:C9:63:09:70:F5:4E:82:11:0B:FE:1A:B9:9A:D5:A3:5E:4E:94:6B:61:CD:52:E9:3B:37
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
open.it, www.open.it

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.