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 su-service.dk

Valid
Issued by (CA)
Let's Encrypt
Subject
su-service.dk
Valid from
Jul 5, 2026
Valid until
Oct 3, 2026 (39 days remaining)
Public key
RSA 3072-bit
Serial
05C9989731ECFD0B9593251C4916033386E6
SHA-256 fingerprint
ED:C1:C1:97:18:C2:DA:CF:F2:54:BE:25:DE:AC:BB:C5:9E:BD:0A:32:D4:4D:04:18:B7:15:50:F5:79:2F:1D:D2
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
su-service.dk, www.su-service.dk

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

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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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