SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dk-tec.dk
SSL/TLS Certificate
SSL/TLS Certificate for dk-tec.dk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- dk-tec.dk
- Valid from
- Jul 11, 2026
- Valid until
- Oct 9, 2026 (49 days remaining)
- Public key
- EC 256-bit
- Serial
- 056549E857437FB8FAF2682BDE054094C735
- SHA-256 fingerprint
- 1E:A4:00:2F:18:CA:28:EE:F0:81:2A:75:CA:FC:44:FA:1D:D4:B4:C2:6E:F3:0F:D4:3A:5D:57:BF:9B:D8:0B:33
- 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 dk-tec.dk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch dk-tec.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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