Starting 1 January 2026 Microsoft requires four additional SIP Gateway service IPs per region to be excluded: 70.152.106.56, 70.152.136.2, 70.152.120.55 and 70.152.38.25 (North America); 70.152.180.28, 70.152.200.28, 70.152.180.29 and 70.152.192.2 (EMEA); 70.152.50.14, 70.152.1.9, 70.152.49.18 and 70.152.1.10 (APAC).
Checked 2026-09-30
- Vendor
- Microsoft
- Product
- Microsoft Teams Phone
- Subsystem
- SIP Gateway authentication
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- from 2026-01-01
- Checked
- 2026-09-30
Sources
- Configure SIP Gateway — Microsoft · tier 2 current vendor documentation · Configure conditional access, Starting 1st January 2026 list
Cite this note
APA
WarmTransfer. (2026, September 30). Setting up SIP Gateway for Cisco and Poly phones on Teams: source note teams-sip-gateway-setup-ca-2026-ips. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-sip-gateway-setup-ca-2026-ips
BibTeX
@misc{warmtransfer-claim-teams-sip-gateway-setup-ca-2026-ips,
title = {Setting up SIP Gateway for Cisco and Poly phones on Teams: source note teams-sip-gateway-setup-ca-2026-ips},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/teams-sip-gateway-setup-ca-2026-ips},
note = {Source note teams-sip-gateway-setup-ca-2026-ips, checked 2026-09-30}
}