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 t-sec.hu
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- t-sec.hu
- Valid from
- May 28, 2026
- Valid until
- Dec 12, 2026 (77 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 09D61E378EC41AC7934D89EE5433F712
- SHA-256 fingerprint
- AF:F1:76:EB:0A:7E:AF:5B:34:1A:3D:FD:9B:EF:B3:43:03:FB:3F:F6:AA:08:31:13:FB:5A:7E:74:9F:5A:9C:73
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by t-sec.hu's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch t-sec.hu 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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