Decodable IP Addresses Decodable uses a set of fixed IP addresses when reading data from data sources and sending data to specified destinations. To ensure that Decodable can do this, make sure that the following IP addresses are allowlisted in your firewall. Use the following table to allow all IPs listed for the AWS region that you are running Decodable in. AWS network requirements AWS Region IP Addresses eu-central-1 18.158.40.109, 18.159.175.142, 18.193.1.236 us-east-1 44.210.12.91, 44.208.143.30, 52.5.150.139, 52.4.58.41, 44.195.57.218 us-west-2 35.160.167.162, 54.203.83.22, 44.226.160.138, 52.36.183.59 ap-southeast-2 54.79.178.25, 3.24.174.157, 54.66.91.180