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 sdg-service.fr

Valid
Issued by (CA)
Let's Encrypt
Subject
sdg-service.fr
Valid from
Aug 19, 2026
Valid until
Nov 17, 2026 (50 days remaining)
Public key
EC 256-bit
Serial
0683A50192DB63594E19E808BFD137F26F3F
SHA-256 fingerprint
6A:C1:29:6B:A6:17:8A:33:36:2B:5E:2E:F3:9D:08:07:89:88:D1:F2:E5:11:90:EB:70:04:10:79:2A:A8:1E:48
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (1)
sdg-service.fr

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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