Lookup of 3.9.155.12
IP address: 3.9.155.12
Address type: IPv4
Host or reverse DNS (rDNS): ec2-3-9-155-12.eu-west-2.compute.amazonaws.com
Country: 
United Kingdom
3.9.155.12 does NOT belong to a private IP address block.
3.9.155.12 does NOT belong to a reserved IP address block.