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 x-dns.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- x-dns.ch
- Valid from
- Jun 21, 2026
- Valid until
- Sep 19, 2026 (58 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 057E690D82026FC8C2B3F7AB7F3F9A175564
- SHA-256 fingerprint
- 05:E0:A1:AF:84:2E:1D:9F:B9:71:8F:EA:07:82:4A:59:98:F7:84:AC:41:B7:2F:4C:18:4E:BD:FB:7D:C3:7C:06
- Chain
- YR2 → 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 x-dns.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch x-dns.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.