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Use valid subnet names#

Operational Excellence · Virtual Network · Rule · 2020_06 · Awareness

Subnet names should meet naming requirements.


When naming Azure resources, resource names must meet service requirements. The requirements for Route table names are:

  • Between 1 and 80 characters long.
  • Alphanumerics, underscores, periods, and hyphens.
  • Start with alphanumeric.
  • End alphanumeric or underscore.
  • Subnet names must be unique within a virtual network.


Consider using names that meet subnet naming requirements. Additionally consider naming resources with a standard naming convention.


This rule does not check if subnet names are unique.