SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
luc-arrignon.fr
SSL/TLS Certificate
SSL/TLS Certificate for luc-arrignon.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- luc-arrignon.fr
- Valid from
- Sep 5, 2026
- Valid until
- Dec 4, 2026 (67 days remaining)
- Public key
- RSA 3072-bit
- Serial
- 06D4114551C6C26311DB4F23053ADDE76F34
- SHA-256 fingerprint
- 60:C3:97:A3:5F:97:A2:70:EA:FF:9F:08:A2:E2:E5:7A:38:55:9A:0B:12:5B:6A:C2:5C:47:7D:D6:53:D1:A1:F3
- 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
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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