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-sa.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- *.ad-sa.ch
- Valid from
- Jun 9, 2026
- Valid until
- Sep 7, 2026 (45 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05948A08CE8DE3DA5DF0CDBBA830E071393B
- SHA-256 fingerprint
- 7E:8B:A1:B2:92:7B:55:67:55:72:C9:5D:DF:65:ED:6E:AC:87:3F:7F:22:97:56:82:E8:A1:B1:1C:F2:A3:01:B1
- Chain
- YR1 → Root YR → 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 ad-sa.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ad-sa.ch 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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