SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
j-kids.ch
SSL/TLS Certificate
SSL/TLS Certificate for j-kids.ch
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- 3cx.itsieber.ch
- Valid from
- Jul 27, 2026
- Valid until
- Oct 25, 2026 (72 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06915AFE4081D6CDF8ACB88E19A360A336C8
- SHA-256 fingerprint
- 44:8E:A4:89:0D:12:B4:9D:C2:8B:22:8E:92:67:CC:43:CB:9F:58:C3:4B:9E:D8:6A:C5:E1:88:A2:DD:04:30:3B
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
Never get surprised by j-kids.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch j-kids.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.