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IPv4 Longest Prefix Route Matcher

Use this online ipv4 longest prefix route matcher with pasted values. Only prefix selection; ignores metrics, policy routing, next-hop reachability and equal-cost paths.

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  1. 01

    Add your input

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  2. 02

    Make it yours

    Adjust the options and run the action.

  3. 03

    Take the result

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longest prefix match online online

Use ipv4 longest prefix route matcher online to work with your own network values. Only prefix selection; ignores metrics, policy routing, next-hop reachability and equal-cost paths.

How to use it

Select Try example, replace the JSON values using the same keys, and select Run tool. Review the output and scope notes before copying or downloading the result.

Options and example settings

OptionChoices / valueExample default
JSON key: destinationUse the same JSON value type as the example."192.0.2.10"
JSON key: routesUse the array/object shape shown in the example.["0.0.0.0/0","192.0.2.0/24","192.0.2.0/25"]

Calculation method

Among matching CIDRs choose the longest prefix

Worked examples

Worked case for ipv4 longest prefix route matcher. Only prefix selection; ignores metrics, policy routing, next-hop reachability and equal-cost paths.

IPv4 Longest Prefix Route Matcher — example with explicit inputs

Settings: No extra options

Input:

{
  "destination": "192.0.2.10",
  "routes": [
    "0.0.0.0/0",
    "192.0.2.0/24",
    "192.0.2.0/25"
  ]
}

Expected result for the example input and options:

Output:

{
  "best_match": "192.0.2.0/25",
  "matching_routes": [
    "192.0.2.0/25",
    "192.0.2.0/24",
    "0.0.0.0/0"
  ]
}

Limitations and common mistakes

  • Only prefix selection; ignores metrics, policy routing, next-hop reachability and equal-cost paths.
  • Keep JSON property names and value types consistent with the example. Network tools do not perform live scans or remote lookups.

Frequently asked questions

How can I use longest prefix match online online?

Select Try example, replace the JSON values using the same keys, and select Run tool. Review the output and scope notes before copying or downloading the result.

Which model does IPv4 Longest Prefix Route Matcher use?

Among matching CIDRs choose the longest prefix. Only prefix selection; ignores metrics, policy routing, next-hop reachability and equal-cost paths.

Technical references

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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