Sign inMonitor a domain
azure · M365LighthouseProd

Microsoft Azure uses 28 prefixes for M365LighthouseProd.

Last updated 5 Nov 2026 from Microsoft Azure’s own list (file dated 2026-11-02 (change 425))

Short answer

Microsoft Azure lists these prefixes under “M365LighthouseProd”. Microsoft publishes Azure’s ranges weekly as Service Tags: named groups such as AzureCloud, Storage, Sql or AzureFrontDoor.Frontend, each a list of prefixes. We import the global (non-regional) tags.

IPv4 prefixes28
IPv6 prefixes0
Regions in the first 100—
Fetched by peekip5 Nov 2026

Prefixes

PrefixRegion / locationService
128.24.142.136/30—M365LighthouseProd
128.24.142.144/28—M365LighthouseProd
128.251.81.190/31—M365LighthouseProd
128.251.81.232/29—M365LighthouseProd
130.107.61.32/29—M365LighthouseProd
130.107.7.102/31—M365LighthouseProd
130.131.135.56/29—M365LighthouseProd
130.131.135.96/31—M365LighthouseProd
135.225.65.24/29—M365LighthouseProd
135.225.65.6/31—M365LighthouseProd
20.91.113.180/31—M365LighthouseProd
20.91.113.192/29—M365LighthouseProd
4.195.177.248/29—M365LighthouseProd
4.195.178.0/31—M365LighthouseProd
40.84.108.110/31—M365LighthouseProd
40.84.109.32/29—M365LighthouseProd
48.209.78.32/29—M365LighthouseProd
48.209.78.6/31—M365LighthouseProd
48.210.97.154/31—M365LighthouseProd
48.210.97.192/29—M365LighthouseProd
48.211.37.134/31—M365LighthouseProd
48.211.37.168/29—M365LighthouseProd
57.154.86.78/31—M365LighthouseProd
57.154.86.80/29—M365LighthouseProd
68.218.185.84/31—M365LighthouseProd
68.218.185.88/29—M365LighthouseProd
74.226.43.80/29—M365LighthouseProd
74.226.43.88/31—M365LighthouseProd
Showing 28 of 28 prefixes All prefixes (CSV)

What changed

No prefixes added or removed since we started tracking this list. Changes appear here the day after the provider publishes them.

Allowlist formats

nginx (first 5 prefixes)
allow 128.24.142.136/30;
allow 128.24.142.144/28;
allow 128.251.81.190/31;
allow 128.251.81.232/29;
allow 130.107.61.32/29;
deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 128.24.142.136/30 -j ACCEPT
iptables -A INPUT -s 128.24.142.144/28 -j ACCEPT
iptables -A INPUT -s 128.251.81.190/31 -j ACCEPT
iptables -A INPUT -s 128.251.81.232/29 -j ACCEPT
iptables -A INPUT -s 130.107.61.32/29 -j ACCEPT

Generate the full list from the CSV, and refresh it on a schedule: providers add and retire prefixes often.

Sources

  1. Microsoft Azure: published IP ranges · checked 5 Nov 2026
  2. Microsoft Azure documentation