SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
koefoed-hansen.dk
SSL/TLS Certificate
SSL/TLS Certificate for koefoed-hansen.dk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- *.koefoed-hansen.dk
- Valid from
- Sep 18, 2026
- Valid until
- Dec 17, 2026 (32 days remaining)
- Public key
- EC 256-bit
- Serial
- 061713EFE483AB23146E0B3F02FF3F3D51EB
- SHA-256 fingerprint
- DD:08:E4:A0:1B:B8:63:1C:B3:FE:E2:B1:DD:71:12:B2:02:17:74:10:C0:4A:77:04:04:96:79:45:00:9E:BF:F2
- 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.
This certificate has been served since Oct 17, 2026.
Never get surprised by koefoed-hansen.dk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch koefoed-hansen.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, CNAME, TXT 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.