To be able to reach Paradigm services, allow access to ALL of the following URLs / hosts in your network appliance policy.
For Web App access, make sure to include both: Web App and API URLs / hosts.
Production
https://api.prod.paradigm.trade/*wss://ws.api.prod.paradigm.trade/*https://api.fs.prod.paradigm.trade/*wss://ws.api.fs.prod.paradigm.trade/*
Testnet
https://api.testnet.paradigm.trade/*wss://ws.api.testnet.paradigm.trade/*https://api.fs.testnet.paradigm.trade/*wss://ws.api.fs.testnet.paradigm.trade/*