SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
cnc-profi.at
SSL/TLS Certificate
SSL/TLS Certificate for cnc-profi.at
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- cnc-profi.at
- Valid from
- May 11, 2025
- Valid until
- Aug 9, 2025 (expired 397 days ago)
- Public key
- RSA 2048-bit
- Serial
- 06E47FE990DB78C1E7896A04E9FA6B927D20
- SHA-256 fingerprint
- 5D:DD:06:B1:F7:60:29:A7:AA:5A:BB:9B:31:E4:69:9F:5C:78:41:31:00:B3:F2:6E:D7:D4:DE:3C:2F:A9:E9:FA
- Chain
- R10 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Aug 21, 2026.
Never get surprised by cnc-profi.at's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch cnc-profi.at 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.