In order for Skype for Business to function properly, the following network ports need to be open OUTBOUND through the network firewall.
Our IP Addresses are as follows:
184.108.40.206 - 220.127.116.11*
North America (California):
18.104.22.168 - 22.214.171.124*
North America (Washington D.C):
126.96.36.199 - 188.8.131.52*
Asia Pacific (Singapore):
184.108.40.206 - 220.127.116.11*
*Please note, these are ranges of IP's and not subnet's. The IP's are therefore inclusive.
**If your organisation utilises VIA Connect, we will only advertise to you and you should only route this subnet to us.