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 hd-it.eu
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.hd-it.eu
- Valid from
- Oct 27, 2025
- Valid until
- Oct 27, 2026 (97 days remaining)
- Public key
- RSA 4096-bit
- Serial
- DBA53383B9612CC227B600660AC20837
- SHA-256 fingerprint
- 41:6E:EE:6E:13:97:57:5D:67:1B:F9:D9:BB:E9:5D:EE:38:F3:A9:5D:C3:27:2D:CB:57:FE:66:84:B6:5A:3F:DC
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
The serving CA (Sectigo Limited) is authorized by this domain's CAA records (certum.eu, letsencrypt.org, sectigo.com).
Never get surprised by hd-it.eu's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch hd-it.eu 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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