IPv4 address distance

ipv4-address-distance · version 1.0.0 · URLs & IP addresses · free, no key needed

Compute the signed integer distance between two IPv4 addresses (address_b minus address_a).

Use when you need to: ipv4 address distance · ipv4 address difference · how many ipv4 addresses apart.

Supported

• ipv4 address distance
• ipv4 address difference
• how many ipv4 addresses apart

Not supported

• IPv6

Behavior

• address_a and address_b are canonical dotted-decimal IPv4 addresses.
• difference is the canonical signed decimal integer string equal to address_b's uint32 value minus address_a's, in range -4294967295..4294967295.

Input

• address_a (string, required): max length 15; pattern ^(?:0|[1-9][0-9]{0,2})(?:\.(?:0|[1-9][0-9]{0,2})){3}$
• address_b (string, required): max length 15; pattern ^(?:0|[1-9][0-9]{0,2})(?:\.(?:0|[1-9][0-9]{0,2})){3}$

Output

• difference (string, required): max length 11; pattern ^-?(0|[1-9][0-9]*)$

Limits

• max address length: 15
• difference min: -4294967295
• difference max: 4294967295

Example

Request input:

{
  "address_a": "10.0.0.1",
  "address_b": "10.0.0.11"
}

Response:

{
  "result": {
    "difference": "10"
  }
}

How to call it

MCP

Connect https://computefirst.net/mcp (setup), then call execute with:

{
  "id": "ipv4-address-distance",
  "version": "1.0.0",
  "input": {
    "address_a": "10.0.0.1",
    "address_b": "10.0.0.11"
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/ipv4-address-distance/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"address_a":"10.0.0.1","address_b":"10.0.0.11"}'

The machine-readable contract is at /v1/tools/ipv4-address-distance/versions/1.0.0.

CLI

node cli.mjs run ipv4-address-distance 1.0.0 --input input.json --base-url https://computefirst.net

Get the client at /clients/cli/.

Related tools

• IPv6 address distance: Compute the signed integer distance between two IPv6 addresses (address_b minus address_a).
• IPv4 address compare: Compare two canonical IPv4 addresses by their numeric uint32 value.
• IPv4 address classify: Classify an IPv4 address against the static IANA IPv4 special-purpose address registry.
• IPv4 address offset: Add a signed integer offset to an IPv4 address, throwing if the result leaves the IPv4 address space.
• IPv4 in CIDR: Test whether a canonical IPv4 address lies in a CIDR prefix whose host bits are zero.
• IPv4 range to cidrs: Convert an arbitrary IPv4 address range into the minimal list of CIDR blocks that exactly covers it.