Some of Enterprise’s services include sending outbound requests to clients, including workflow-related callbacks and other notifications. For clients who manage their own operations from behind firewalls and require whitelisting of all inbound traffic, Enterprise initiates all outbound requests from the following set of IP addresses:

# myaccount.lingotek.com (Virginia)
use1a: 54.145.247.135
use1b: 54.81.151.136
use1c: 54.237.10.242
use1d: 52.6.43.156

# myaccount.lingotek.de (Frankfurt)
euc1a: 35.156.104.243
euc1b: 3.72.252.50
euc1c: 3.66.178.69