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Forces `nc` to use IPv4 addresses only.

Ubuntu CentOS Debian Arch SUSE Slackware Alpine Fedora

Last updated: 2025-10-07 Report error

Syntax

$nc -4 [host] [port]

Examples

Examples

$nc -4 192.168.59.1 80

Typical use cases

Force IPv4

nc -4 host port

Note IPv4-only option

Export