Lookup of 3.18.7.81
IP address: 3.18.7.81
Address type: IPv4
Hostname or reverse DNS (rDNS): ec2-3-18-7-81.us-east-2.compute.amazonaws.com
Country: 
United States
3.18.7.81 does NOT belong to a private IP address block.
3.18.7.81 does NOT belong to a reserved IP address block.