IPv4 range expander
Calculate a valid IPv4 subnet with CIDR notation from start and end addresses
Note: This tool calculates a valid IPv4 subnet from a start and end IP address. It automatically determines the smallest subnet that can contain the given range and provides the CIDR notation. The "new value" column shows the aligned subnet boundaries that encompass your IP range.
About this tool
Use it to
- Calculate optimal subnet for an IP address range
- Convert IP ranges to CIDR notation
- Find the smallest subnet that contains a given range
- Plan network subnets from existing IP allocations
- Office Network
- Convert IP range 192.168.1.1 to 192.168.1.254 into a proper /24 subnet.
- Subnet Planning
- Find the minimal subnet size needed for a specific IP range.
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