SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
qr-koder.dk
SSL/TLS Certificate
SSL/TLS Certificate for qr-koder.dk
Valid- Issued by (CA)
- Google Trust Services
- Subject
- qr-koder.dk
- Valid from
- Jun 26, 2026
- Valid until
- Sep 24, 2026 (57 days remaining)
- Public key
- EC 256-bit
- Serial
- 4C86E1E2C31987EB131B60F0CB7997FF
- SHA-256 fingerprint
- B4:CC:54:BB:A6:01:96:63:02:A7:B2:51:27:A5:18:4B:05:D3:84:18:8F:B1:8A:FF:6F:C8:F5:EC:46:9E:E1:94
- Chain
- WE1 → GTS Root R4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by qr-koder.dk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch qr-koder.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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