In case your device is Browser or Desktop->Linux
In case you like to test within a restricted environment, you need to allow access of our public IP address to your website.
Thus, you should allow the following IPs:
3.65.122.186
with https, i.e. TCP on port 443
with http, i.e. TCP on port 80
or what you specify in your url.
In case your device is Mobile or Desktop->Windows
We do not provide a static outgoing IP on default. In case you need a custom static outgoing IP, please contact us.