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 union.hu
Valid- Issued by (CA)
- Microsec Ltd.
- Subject
- *.unionbiztosito.hu
- Valid from
- Nov 11, 2025
- Valid until
- Dec 12, 2026 (118 days remaining)
- Public key
- EC 256-bit
- Serial
- 05D9E379CB7FFBF8C72BBE21B6B83F570D
- SHA-256 fingerprint
- 68:3B:B1:BE:35:C9:F4:32:6D:AC:A2:6B:80:39:2F:2B:CF:A0:81:0C:3B:2A:5D:7F:6B:21:C4:12:FF:02:1B:C4
- Chain
- e-Szigno OV TLS CA 2023 → Microsec e-Szigno Root CA 2009
Certificate Authority Authorization (CAA)
CAA restricts issuance to e-szigno.hu; we couldn't map the serving CA (Microsec Ltd.) to one of these identifiers.
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This is today's certificate. Turn on monitoring and we'll watch union.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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