SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ask-skak.dk
SSL/TLS Certificate
SSL/TLS Certificate for ask-skak.dk
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- ask-skak.dk
- Valid from
- Sep 23, 2025
- Valid until
- Sep 23, 2026 (46 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 40ED6538D627D528C6BF1703B0C10B3E
- SHA-256 fingerprint
- 4B:A0:A0:AD:8D:CC:01:4C:89:2B:27:71:A5:B8:BC:94:D9:55:FB:B5:00:FE:D1:D3:91:FA:F9:4B:75:74:08:5A
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ask-skak.dk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ask-skak.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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