SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
b-actif.fr
SSL/TLS Certificate
SSL/TLS Certificate for b-actif.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- b-actif.fr
- Valid from
- Sep 3, 2026
- Valid until
- Dec 2, 2026 (41 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 053895F25BAE8EF672BBB0AD6808ABD58A2B
- SHA-256 fingerprint
- 4B:53:12:2E:3C:B3:EC:29:4A:61:05:FB:D8:71:66:3B:B9:F1:45:DD:B6:D3:68:1A:36:03:8A:9A:CD:45:D9:EA
- Chain
- YR2 → 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 Sep 22, 2026.
Never get surprised by b-actif.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch b-actif.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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