SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
io-bau.ch
SSL/TLS Certificate
SSL/TLS Certificate for io-bau.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- io-bau.ch
- Valid from
- Jul 15, 2026
- Valid until
- Oct 13, 2026 (60 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05D3A0EEAD64614BD1D348DECF9D065A9750
- SHA-256 fingerprint
- D5:09:39:27:CE:39:C2:AF:22:D6:23:76:83:EC:7E:DB:84:1E:B1:7A:97:E1:0F:53:31:41:B9:5A:E7:A4:C0:80
- 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 io-bau.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch io-bau.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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