SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sgs-sage.fr
SSL/TLS Certificate
SSL/TLS Certificate for sgs-sage.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sgs-sage.fr
- Valid from
- Jun 20, 2026
- Valid until
- Sep 18, 2026 (57 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0501CBDBC40479626AA95D915978FC61ED1E
- SHA-256 fingerprint
- B8:D3:B9:2F:33:F3:91:4B:A3:C7:F2:47:6E:01:2B:0C:BC:D1:85:F5:9E:38:2F:59:9B:4F:31:AB:0A:2F:C5:90
- 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 sgs-sage.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch sgs-sage.fr 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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