SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
luk-s.com
SSL/TLS Certificate
SSL/TLS Certificate for luk-s.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- luk-s.com
- Valid from
- Jul 29, 2026
- Valid until
- Oct 27, 2026 (52 days remaining)
- Public key
- EC 256-bit
- Serial
- 05B76FF3BE558C289E5288F6A530041EB827
- SHA-256 fingerprint
- 38:3E:2D:57:B8:8A:2E:10:76:26:B4:B0:F1:F2:00:69:CA:3C:94:FF:14:5D:2B:04:F7:0B:DB:D3:4C:A3:56:B5
- 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.
This certificate has been served since Aug 19, 2026.
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This is today's certificate. Turn on monitoring and we'll watch luk-s.com 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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