Netcat
-4
Forces `nc` to use IPv4 addresses only.
Ubuntu
CentOS
Debian
Arch
SUSE
Slackware
Alpine
Fedora
Verified: 2025-10-07
Syntax
$nc -4 [host] [port]
Examples
$nc -4 192.168.59.1 80
Typical use cases
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Standard usage
-4 --help
Note
IPv4-only option
Export