SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for ad-s.dk
Valid- Issued by (CA)
- Google Trust Services
- Subject
- ad-s.dk
- Valid from
- Oct 3, 2026
- Valid until
- Jan 1, 2027 (82 days remaining)
- Public key
- EC 256-bit
- Serial
- 654079633B14C49E0E37959D0B9718E9
- SHA-256 fingerprint
- 10:8C:48:55:BE:7E:EF:FE:0A:76:90:0A:CA:DC:21:73:07:49:9F:2A:B0:EE:77:64:0C:07:B1:50:1C:89:16:01
- 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 ad-s.dk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ad-s.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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