SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
lothar-schulz.info
SSL/TLS Certificate
SSL/TLS Certificate for lothar-schulz.info
Self-signed- Issued by (CA)
- server23.web4a.de
- Subject
- server23.web4a.de
- Valid from
- Nov 24, 2020
- Valid until
- Nov 24, 2021 (expired 1746 days ago)
- Public key
- RSA 4096-bit
- Serial
- 3FED5220DFBB9C7B2BD4FEF5845247649AC48C69
- SHA-256 fingerprint
- 44:D4:9D:49:83:FC:CE:47:DB:7F:6E:BF:8A:56:D9:F5:D2:62:FA:B6:FA:16:FA:04:CD:D1:4C:FC:A4:A2:F1:DA
- Chain
- server23.web4a.de
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 lothar-schulz.info's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch lothar-schulz.info 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.