SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
lume-tech.net
SSL/TLS Certificate
SSL/TLS Certificate for lume-tech.net
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- lume-tech.net
- Valid from
- Oct 1, 2026
- Valid until
- Dec 30, 2026 (73 days remaining)
- Public key
- EC 256-bit
- Serial
- 06FD09D7B796306FF5B432446660EFCFFB99
- SHA-256 fingerprint
- 3C:A9:1E:CB:6A:F6:D5:EC:8D:FD:68:23:CD:1A:36:8D:C3:2E:93:CA:ED:C8:A4:CA:74:16:7B:19:20:94:F2:A3
- Chain
- YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (comodoca.com, digicert.com, globalsign.com, letsencrypt.org, pki.goog, sectigo.com).
Never get surprised by lume-tech.net's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch lume-tech.net 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, 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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