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 eg-gym.dk

Valid
Issued by (CA)
Hellenic Academic and Research Institutions CA
Subject
*.eg-gym.dk
Valid from
Mar 31, 2026
Valid until
Oct 16, 2026 (71 days remaining)
Public key
RSA 4096-bit
Serial
68CDFF96E3C7A5346D9B32DADBA9CBAB
SHA-256 fingerprint
F6:96:6D:88:5D:BC:96:8A:9F:53:08:41:0B:9E:3D:4D:A4:75:7E:05:EA:98:CA:B4:55:1B:71:4C:28:0B:88:EC
Chain
GEANT TLS RSA 1 → HARICA TLS RSA Root CA 2021
Subject Alternative Names (2)
*.eg-gym.dk, eg-gym.dk

Certificate Authority Authorization (CAA)

CAA restricts issuance to harica.gr; we couldn't map the serving CA (Hellenic Academic and Research Institutions CA) to one of these identifiers.

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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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