SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ot-lannion.fr
SSL/TLS Certificate
SSL/TLS Certificate for ot-lannion.fr
Valid- Issued by (CA)
- Google Trust Services
- Subject
- ot-lannion.fr
- Valid from
- Sep 29, 2026
- Valid until
- Dec 28, 2026 (67 days remaining)
- Public key
- EC 256-bit
- Serial
- 18581B2B71BCDA6D0EE3F69D1A91FB67
- SHA-256 fingerprint
- E5:C6:6F:11:1E:55:16:C0:13:89:B4:C1:4D:0D:80:AF:03:D7:8E:88:B5:31:95:75:61:AC:86:8F:B4:D8:50:B7
- Chain
- WE1 → GTS Root R4
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 Oct 10, 2026.
Never get surprised by ot-lannion.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ot-lannion.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.