SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
top-assur.fr
SSL/TLS Certificate
SSL/TLS Certificate for top-assur.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- top-assur.fr
- Valid from
- Sep 15, 2026
- Valid until
- Dec 14, 2026 (54 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05F5D65124639D394AB1BB773DB6992F7E4B
- SHA-256 fingerprint
- FA:AC:42:B1:00:CE:F9:A1:55:03:F4:9C:D7:F2:F0:8D:28:D0:44:86:F8:78:96:9D:D1:09:B1:BE:11:63:D4:5B
- 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 Sep 18, 2026.
Never get surprised by top-assur.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch top-assur.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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