SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
xserv-dev.at
SSL/TLS Certificate
SSL/TLS Certificate for xserv-dev.at
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- xserv-dev.at
- Valid from
- Oct 15, 2025
- Valid until
- Jan 13, 2026 (expired 226 days ago)
- Public key
- RSA 2048-bit
- Serial
- 066339A34E04EF85C9EFF07D86C79D8C0D1A
- SHA-256 fingerprint
- 18:46:3C:0F:6F:03:F9:C7:3B:D6:CD:0F:2C:FF:FA:20:AA:DB:1F:55:9B:C2:7D:82:09:EA:F5:F9:5A:F2:6D:35
- Chain
- R12 → 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 Jul 24, 2026.
Never get surprised by xserv-dev.at's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch xserv-dev.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.