IPv4 format

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

Format a uint32 integer string or four octets as a canonical dotted-decimal IPv4 address.

Use when you need to: ipv4 format · format ipv4 dotted decimal · uint32 or octets to ipv4.

Supported

• ipv4 format
• format ipv4 dotted decimal
• uint32 or octets to ipv4

Not supported

• IPv6
• hexadecimal
• CIDR prefixes
• leading-zero dotted decimal as input
• hostnames

Behavior

• Input is exactly one of integer or octets; unknown fields are rejected; both or neither throw.
• integer is a canonical integer string n with 0 <= n <= 4294967295; -0 is accepted as 0.
• octets is an array of exactly four JSON integers 0-255 (Number.isInteger).
• address is dotted decimal without leading zeros (0 is written 0).
• ipv4-format(ipv4-parse(a)) yields a for every canonical dotted-decimal address a.

Input

• object

Output

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

Limits

• integer min: 0
• integer max: 4294967295
• octet count: 4
• octet min: 0
• octet max: 255

Example

Request input:

{
  "integer": "3232235777"
}

Response:

{
  "result": {
    "address": "192.168.1.1"
  }
}

How to call it

MCP

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

{
  "id": "ipv4-format",
  "version": "1.0.0",
  "input": {
    "integer": "3232235777"
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/ipv4-format/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"integer":"3232235777"}'

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

CLI

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

Get the client at /clients/cli/.

Related tools

• IPv4 parse: Parse a canonical dotted-decimal IPv4 address into octets and a uint32 integer string.
• IPv6 format: Format 8 hextets or a 128-bit integer string as the RFC 5952 canonical compressed IPv6 address.
• IPv4 address offset: Add a signed integer offset to an IPv4 address, throwing if the result leaves the IPv4 address space.
• IPv4 CIDR parse: Parse an IPv4 CIDR block into its network, broadcast, netmask, wildcard mask, usable host range and address counts.
• IPv4 mask convert: Convert between an IPv4 prefix length, dotted subnet netmask, and dotted wildcard (host) mask.
• IPv4 range to cidrs: Convert an arbitrary IPv4 address range into the minimal list of CIDR blocks that exactly covers it.