SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sas-aton.fr
SSL/TLS Certificate
SSL/TLS Certificate for sas-aton.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sas-aton.fr
- Valid from
- Oct 10, 2026
- Valid until
- Jan 8, 2027 (56 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0693745A67EC1E34D484CDE7DB6B43BAEDEA
- SHA-256 fingerprint
- 99:33:17:32:24:3C:EC:9C:8C:66:E4:05:F4:FA:FF:85:6A:E7:61:97:DA:52:FD:25:F1:94:6D:BD:83:24:6A:1C
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Oct 19, 2026.
Never get surprised by sas-aton.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch sas-aton.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, CNAME, TXT 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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