Azure northcentralus IP ranges

Microsoft Azure region

The Microsoft Azure region northcentralus uses 670 IPv4 and 182 IPv6 blocks, covering about 983,978 unique IPv4 addresses. It is one of 78 Azure regions with published address ranges.

IPv4 blocks
670
IPv6 blocks
182
Unique IPv4 addresses
983,978

Range data updated 2026-11-07

northcentralus address prefixes

Using these ranges

Region prefix lists are used to allowlist traffic from workloads in northcentralus, to route or geofence by cloud region, and to recognise Azure infrastructure in logs. Prefixes move between regions and services over time, so refresh any allowlist regularly rather than hard-coding it. An address inside these ranges tells you which network hosts it, not who is renting it; check each address's profile for risk evidence.

Azure ranges are shared between customer workloads and Microsoft-operated services. An address in a regional compute range is usually a customer virtual machine; Microsoft's own crawlers and mail systems have separate, verifiable identities.

Other Azure regions

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