Lookup of 54.91.138.42
IP address: 54.91.138.42
Address type: IPv4
Host or reverse DNS (rDNS): ec2-54-91-138-42.compute-1.amazonaws.com
Country: 
United States
54.91.138.42 does NOT belong to a private IP address block.
54.91.138.42 does NOT belong to a reserved IP address block.