SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
line-k.dk
SSL/TLS Certificate
SSL/TLS Certificate for line-k.dk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- *.line-k.dk
- Valid from
- Oct 9, 2026
- Valid until
- Jan 7, 2027 (82 days remaining)
- Public key
- EC 256-bit
- Serial
- 0507FC12A81D3F7143A181ACC93CACB2D867
- SHA-256 fingerprint
- A9:23:B7:80:4F:02:4C:AD:F4:AA:8A:C5:7A:41:62:A4:56:CB:C7:FF:B3:01:6C:55:B4:CE:FE:86:CC:68:07:4B
- Chain
- YE2 → 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.
Never get surprised by line-k.dk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch line-k.dk 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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