SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ddv-mediengruppe.com
SSL/TLS Certificate
SSL/TLS Certificate for ddv-mediengruppe.com
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- www.dd-v.de
- Valid from
- Feb 4, 2026
- Valid until
- May 5, 2026 (expired 102 days ago)
- Public key
- RSA 2048-bit
- Serial
- 0536846790508796A30120EAB118A9F19CE4
- SHA-256 fingerprint
- 12:7C:36:C2:46:FE:9F:19:AA:73:68:AD:77:EB:A3:C8:E1:67:AB:A2:7F:86:12:1F:DB:31:B4:50:61:EA:A9:00
- Chain
- R13 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ddv-mediengruppe.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ddv-mediengruppe.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, 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.