SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
jedermann-verlag-gmbh.com
SSL/TLS Certificate
SSL/TLS Certificate for jedermann-verlag-gmbh.com
Hostname mismatch- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- *.jedermann.de
- Valid from
- Jul 28, 2026
- Valid until
- Feb 12, 2027 (99 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 4ED23EB1595D7D2541B3FE1ADC6AA91B
- SHA-256 fingerprint
- 2F:A5:5E:41:39:E2:64:04:90:C9:5C:62:CE:24:D2:92:0E:B9:28:0A:6F:F5:71:CA:0A:B9:F7:BC:0A:3B:E0:75
- Chain
- Certum DV TLS G2 R39 CA → Certum Trusted Root CA → Certum Trusted Network CA
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 Oct 16, 2026.
Never get surprised by jedermann-verlag-gmbh.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch jedermann-verlag-gmbh.com 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.