Update firewalls.md to include new IPs

Author: swmachan

articles/cognitive-services/Translator/firewalls.md

@@ -19,9 +19,9 @@ Translator Text API can translate behind firewalls using either domain-name or I
 ## Translator IP Addresses
 The IP addresses for api.cognitive.microsofttranslator.com - Microsoft Translator Text API as of November 20, 2018:
 
-* **Asia Pacific:** 40.90.139.163, 104.44.89.44
-* **Europe:** 40.90.138.4, 40.90.141.99
-* **North America:** 40.90.139.36, 40.90.139.2
+* **Asia Pacific:** 20.40.125.208, 20.43.88.240, 20.184.58.62, 40.90.139.163, 104.44.89.44
+* **Europe:** 40.90.138.4, 40.90.141.99, 51.105.170.64, 52.155.218.251
+* **North America:** 40.90.139.36, 40.90.139.2, 40.119.2.134, 52.224.200.129, 52.249.207.163
 
 
 ## Next steps