IPv4 Range Address Count
Count every address in an arbitrary inclusive IPv4 range, not a prefix’s usable-host count; entire 32-bit space remains exact.
Description
Count every address in an arbitrary inclusive IPv4 range, not a prefix’s usable-host count; entire 32-bit space remains exact.
An inclusive IPv4 range count includes both endpoints. Returning decimal text preserves the full-space count of 4,294,967,296.
When to use this tool
Count every address in an arbitrary inclusive IPv4 range, not a prefix’s usable-host count; entire 32-bit space remains exact.
- Prepare the supplied start, end fields for this operation.
- Compare the complete example with the representation used by your own input before carrying the result into another step.
How to use the tool and how it works
- Enter start, end. Use the exact text syntax, units and index conventions explained below.
- Run the tool. If input validation fails, correct the supplied fields before interpreting any result.
- Read result.count. Interpret false, null and empty lists using the distinctions below; they can be valid outputs.
Parse ordered start and end addresses and calculate end minus start plus one with exact integers.1
| Input field | Meaning and representation | Accepted input |
|---|---|---|
| start | Address text for the family named by this tool. Prefix lengths are separate fields where shown. | Text; at most 8,192 UTF-16 code units, subject to the grammar above |
| end | Address text for the family named by this tool. Prefix lengths are separate fields where shown. | Text; at most 8,192 UTF-16 code units, subject to the grammar above |
| Output field | Interpretation |
|---|---|
| result | Object containing the named outputs below. |
| result.count | The count value under the stated formula or text convention. |
{
"input": {
"start": "0.0.0.0",
"end": "255.255.255.255"
},
"output": {
"result": {
"count": "4294967296"
}
}
}Limitations and assumptions
- The tool does not exclude network or broadcast addresses, enumerate hosts or check address availability.
- IPv4 input uses strict dotted-decimal octets without leading zeros or surrounding whitespace. IPv6 accepts its supported compressed or full spellings and trims surrounding whitespace, but rejects zone identifiers; embedded dotted IPv4 uses the strict IPv4 spelling. IPv6 address outputs are fully expanded unless stated otherwise.
- All declared input fields are required and unexpected top-level fields are rejected. Numbers must be finite; lists are limited to 128 entries and ordinary text fields to 8,192 UTF-16 code units, with tighter limits where stated.
- JSON text inputs must parse within bounded nesting and size limits. Numeric outputs outside the safe finite range are rejected; large exact integer results use decimal strings. Indexes and half-open spans are zero-based unless a rank is explicitly described as one-based.
Alternative or Complementary methods
Use address-set arithmetic for prefix planning and a routing or interface inspection for deployed configuration. Membership and overlap do not establish reachability, ownership or route preference.
References
Similar or alternative tools
- IPv4 Address Byte Order Swap
Reverse the four explicit IPv4 byte lanes while retaining the original exact integer value; not reverse DNS or host/network byte conversion in memory.
- IPv4 Address Pair Common Prefix
Find the exact common leading-bit prefix of two IPv4 addresses; identical addresses yield a /32 ancestor.