Source note · Microsoft teams direct routing
The Direct Routing SIP FQDNs resolve to 52.112.0.0/14 and 52.120.0.0/14, and firewalls must allow signaling to and from all of these ranges, not only the addresses returned by DNS.
Checked 2026-09-30
- Vendor
- Microsoft
- Product
- Teams Phone
- Subsystem
- SIP signaling
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-30
- Checked
- 2026-09-30
Sources
- Plan Direct Routing — Microsoft (Microsoft Learn) · tier 2 current vendor documentation · Section 'SIP signaling: FQDNs', IP range list and 'Important' box
Cite this note
APA
WarmTransfer. (2026, September 30). Microsoft teams direct routing: source note microsoft-teams-direct-routing-signaling-ranges. WarmTransfer. https://warmtransfer.net/knowledge/claims/microsoft-teams-direct-routing-signaling-ranges
BibTeX
@misc{warmtransfer-claim-microsoft-teams-direct-routing-signaling-ranges,
title = {Microsoft teams direct routing: source note microsoft-teams-direct-routing-signaling-ranges},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/microsoft-teams-direct-routing-signaling-ranges},
note = {Source note microsoft-teams-direct-routing-signaling-ranges, checked 2026-09-30}
}