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 u-fly.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- u-fly.ch
- Valid from
- Jul 25, 2026
- Valid until
- Oct 23, 2026 (28 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0626C178A463C342DBDBACC4D769CCCD0D3D
- SHA-256 fingerprint
- 43:3D:D9:75:47:9C:6F:C5:47:90:D6:C3:CE:8F:75:83:3F:EC:F9:1A:87:5B:B8:1F:C5:0D:E8:D0:0D:19:0C:B1
- 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 u-fly.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch u-fly.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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