SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for d-z.it
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- autodiscover.d-z.it
- Valid from
- Sep 1, 2026
- Valid until
- Nov 30, 2026 (83 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0581A05BED43AE9A80836B1B920D6A4EB6D9
- SHA-256 fingerprint
- AB:DE:AC:E0:D7:4D:5E:3C:7B:BE:43:4C:FA:66:C0:AA:3B:5D:AE:ED:3E:AF:4B:B0:66:1A:18:7F:EF:7C:89:8C
- 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.
Never get surprised by d-z.it's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch d-z.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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