SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sas-at2r.fr
SSL/TLS Certificate
SSL/TLS Certificate for sas-at2r.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sas-at2r.fr
- Valid from
- Jun 11, 2026
- Valid until
- Sep 9, 2026 (43 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 052C5B2C44041C75A370A50F1E4976B5669B
- SHA-256 fingerprint
- F1:2B:02:1A:0A:1F:1B:F5:40:6B:CB:30:C8:09:C3:92:35:6A:69:F0:0B:3E:4B:E2:0A:01:E1:CB:71:43:BC:E0
- 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.
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Uptime
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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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