Azure Subnet IP Range finder tool

This tool helps you find a suitable IP range for a new subnet in an existing Azure Virtual Network for the given number of required IP addresses.

It takes the existing Virtual Network IP range and the existing subnet IP ranges and required IP addresses as input and returns a suitable IP range for the new subnet.

Virtual Network IP Range (CIDR):
Example: 10.230.16.0/26


Existing Subnet IP Ranges (CIDR) comma separated:
Example: 10.230.16.0/27,10.230.16.32/28 (or leave empty if no subnets are deployed)


Number of required IP addresses:
Example: 10 (10 + 5 Azure reserved addresses)