SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gefion-gym.dk
SSL/TLS Certificate
SSL/TLS Certificate for gefion-gym.dk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- gefion-gym.dk
- Valid from
- Jul 14, 2026
- Valid until
- Oct 12, 2026 (69 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05C7EB46F4C550563EA75254ADC88AA4EAC5
- SHA-256 fingerprint
- FC:16:DE:FC:A8:40:1B:16:69:BC:3F:2F:EE:CD:EA:DE:A4:E7:67:54:00:8D:A4:67:D9:6C:83:90:04:14:8A:02
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by gefion-gym.dk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch gefion-gym.dk 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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