SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
lk-net.pl
SSL/TLS Certificate
SSL/TLS Certificate for lk-net.pl
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- lk-net.pl
- Valid from
- Jun 29, 2026
- Valid until
- Sep 27, 2026 (58 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0585F85DCE7D92E6B08E9741793F0ED4FB94
- SHA-256 fingerprint
- 40:37:F2:75:50:1D:33:93:88:EF:68:EF:71:57:0F:0D:32:4F:B3:CB:1C:10:86:A7:5D:9B:0D:00:FA:06:FA:E1
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (certum.pl, letsencrypt.org).
Never get surprised by lk-net.pl's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch lk-net.pl 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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