SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gen-lab.hu
SSL/TLS Certificate
SSL/TLS Certificate for gen-lab.hu
Self-signed- Issued by (CA)
- mail.coelnet.hu
- Subject
- mail.coelnet.hu
- Valid from
- Oct 20, 2016
- Valid until
- Oct 18, 2026 (46 days remaining)
- Public key
- RSA 2048-bit
- Serial
- C3FE4E1CACC5510B
- SHA-256 fingerprint
- DA:D4:49:8D:9A:AC:1C:B4:CA:54:05:81:26:7F:0E:9C:9E:3B:59:80:41:21:09:04:D3:2E:A4:45:06:40:05:C5
- Chain
- mail.coelnet.hu
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by gen-lab.hu's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch gen-lab.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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