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 keler.hu
Valid- Issued by (CA)
- Microsec Ltd.
- Subject
- keler.hu
- Valid from
- Feb 27, 2026
- Valid until
- Mar 30, 2027 (250 days remaining)
- Public key
- EC 256-bit
- Serial
- 065A6D30A8612CC57A664C6AFA0A
- SHA-256 fingerprint
- 8D:80:A2:65:C3:CD:5A:2D:DC:9E:5D:2B:8F:D7:8A:5A:69:31:E0:2C:C3:59:9E:D7:AE:F1:C0:63:7F:14:9A:14
- Chain
- e-Szigno OV TLS CA 2023 → Microsec e-Szigno Root CA 2009
Certificate Authority Authorization (CAA)
CAA restricts issuance to e-szigno.hu, netlock.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 keler.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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