SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
rs-halle-leipzig.org
SSL/TLS Certificate
SSL/TLS Certificate for rs-halle-leipzig.org
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- 000-dummy.web1.isp.domservice.eu
- Valid from
- Nov 10, 2026
- Valid until
- Feb 8, 2027 (87 days remaining)
- Public key
- EC 256-bit
- Serial
- 063793979B74D38925E0877FBA73E9D07B71
- SHA-256 fingerprint
- 88:FC:35:8C:46:AE:DC:32:7B:9E:BC:F6:2B:64:83:58:0A:3E:64:E1:8B:6B:F5:F8:13:81:D3:16:85:09:82:DE
- Chain
- YE2 → Root YE → ISRG Root X2 → 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 25, 2026.
Never get surprised by rs-halle-leipzig.org's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch rs-halle-leipzig.org 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, CNAME, TXT 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.