arping

Name: arping
Author: Thomas Habets

A command-line network utility that checks whether an IP address is in use on a local network.

By Thomas Habets

Free Open sourceLinux Command line

Official websitegithub.com

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Alternatives

arp-scanarp-scan discovers and fingerprints multiple local network hosts from Linux, while arping checks whether one IP address is in use.
iputilsiputils includes arping alongside Linux ping and tracepath utilities, while arping is a standalone command for checking local IP address conflicts.
netdiscoverAn ARP scanner that finds hosts on a local network by active or passive discovery.
Angry IP ScannerA fast, friendly IP and port scanner that needs no installation and runs on Windows, Mac and Linux.
Advanced IP ScannerScans a home or office network and lists every device with its name, MAC address and shared folders.

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About arping

arping uses ARP requests to check whether a specific IP address on a LAN is taken and identify the MAC address that owns it. It can help when a host does not respond to regular ping or is not on a routable network.

The project lists Debian and Ubuntu, ARM Linux, and OpenBSD among platforms it tests. It is aimed at people diagnosing local network address conflicts.

Strengths

Checks local address use without relying on ICMP ping
Reports the MAC address responding for an IP
Tested on Linux and OpenBSD

Limitations

Designed for local network checks
Requires command-line use

Details

Pricing: FreeFree and open source under GPL-2.0-or-later.
License: GPL-2.0-or-later
Developer: Thomas Habets
Platforms: Linux, Command line
How it runs: Downloadable app
Best suited for: Network administrators checking local IP address conflicts
Categories: Network tools, CLI tools
Last verified: October 8, 2026
Added: October 8, 2026
Provenance: Selected from the Homebrew formula
Sources: github.com/ThomasHabets/arping

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