SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
klangei-schweiz.com
SSL/TLS Certificate
SSL/TLS Certificate for klangei-schweiz.com
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- rl-itservice.ch
- Valid from
- Aug 7, 2026
- Valid until
- Nov 5, 2026 (39 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0618565FD87B30CF727016712610B769F256
- SHA-256 fingerprint
- 78:F9:87:27:DA:61:82:6A:9B:39:D4:66:F9:AD:AB:13:C6:F0:E5:30:A7:BD:8D:43:CC:6A:4D:90:73:77:03:8A
- 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.
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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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