Lookup of 128.140.29.91
IP address: 128.140.29.91
Address type: IPv4
Host or reverse DNS (rDNS): static.91.29.140.128.clients.your-server.de
Country: 
Germany
128.140.29.91 does NOT belong to a private IP address block.
128.140.29.91 does NOT belong to a reserved IP address block.