SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
preta-former.fr
SSL/TLS Certificate
SSL/TLS Certificate for preta-former.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- preta-former.fr
- Valid from
- Aug 19, 2026
- Valid until
- Nov 17, 2026 (66 days remaining)
- Public key
- EC 256-bit
- Serial
- 06A2A6E14DE84157A9E10BA22D8C38699D82
- SHA-256 fingerprint
- 41:0C:9F:E2:13:2C:14:65:32:BD:0C:DA:69:07:A3:A3:9B:4E:F8:8C:9A:C2:16:C2:CB:89:43:6D:11:F3:4D:95
- Chain
- YE1 → Root YE → ISRG Root X2 → 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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