Lookup of 5.9.18.30
IP address: 5.9.18.30
Address type: IPv4
Host or reverse DNS (rDNS): static.30.18.9.5.clients.your-server.de
Country: 
Germany
5.9.18.30 does NOT belong to a private IP address block.
5.9.18.30 does NOT belong to a reserved IP address block.