Lookup of 57.181.161.240
IP address: 57.181.161.240
Address type: IPv4
Host or reverse DNS (rDNS): ec2-57-181-161-240.ap-northeast-1.compute.amazonaws.com
Country: 
Japan
57.181.161.240 does NOT belong to a private IP address block.
57.181.161.240 does NOT belong to a reserved IP address block.