We do NOT RECOMMEND to run Microsoft Translator from behind an IP filtered firewall. The setup is likely to break in the future, without notice.
It is better to use domain-name filtering.
The IP addresses used as of April 12, 2017:
For api.microsofttranslator.com - Text Translator API
For dev.microsofttranslator.com - Speech Translator API
For api.cognitive.microsoft.com (Azure Token Service)
The above doesn’t cover the Microsoft Office built-in translation functionality, which uses a very large set of access points.
- Last edited: 7/22/2017