SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
casait.it
SSL/TLS Certificate
SSL/TLS Certificate for casait.it
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- casait.it
- Valid from
- Aug 24, 2026
- Valid until
- Nov 22, 2026 (36 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05F0BB083DBF848FDAF2463F75BD8E7CB34B
- SHA-256 fingerprint
- 60:D6:56:C0:1E:70:2D:2D:9A:43:C6:97:38:D0:89:C1:C0:0D:41:D2:0E:5A:72:E0:F0:59:DB:50:54:B9:C3:2F
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Oct 11, 2026.
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This is today's certificate. Turn on monitoring and we'll watch casait.it continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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