About IP Range Calculator
Analyze an inclusive IPv4 range without sending addresses to a server.
Input is processed locally in your browser and is not sent to Navorika.
How the calculation works
Inclusive range size
End address number − start address number + 1.
CIDR representation
Shared leading bits determine the containing CIDR; aligned power-of-two chunks form the exact block list.
How to use this tool
- 1Enter starting and ending IPv4 addresses.
- 2Correct any ordering or syntax error.
- 3Review the count and containing CIDR.
- 4Copy the exact CIDR blocks.
Understanding the result
The containing CIDR may include addresses outside the entered range.
The exact block list covers only the entered inclusive range.
Important limitations
- IPv4 only.
- A non-aligned range can require multiple exact CIDR blocks.
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Frequently asked questions
Are both endpoints counted?
Yes, the range is inclusive.
What is the range from 192.168.1.1 to .254?
It contains 254 addresses.
Why are there multiple CIDRs?
Arbitrary ranges often need several aligned CIDR blocks for exact coverage.
Use with
These tools support a practical next or previous step in the same workflow.
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