zblocklist(1)

zblocklist1

Zmap ip blocklist tool

Usage

zblocklist [-b <blocklist>] [-w <allowlist>] [OPTIONS ...]

Overview

ZBlacklist is a network tool for limiting and deduplicating a list of IP addresses using a blocklist or allowlist.

Options

Basic options

-b, --blocklist-file=path

File of subnets to exclude, in CIDR notation, one-per line. It is recommended you use this to exclude RFC 1918 addresses, multicast, IANA reserved space, and other IANA special-purpose addresses. An example blocklist file blocklist.conf for this purpose.

-w, --allowlist-file=name

File of subnets to include, in CIDR notation, one-per line. All other subnets will be excluded.

-l, --log-file=name

File to log to.

--disable-syslog

Disable logging messages to syslog.

-v, --verbosity

Level of log detail (0-5, default=3)

--no-duplicate-checking

Don´t deduplicate input addresses. Default is false.

--ignore-blocklist-errors

Ignore invalid, malformed, or unresolvable entries in the blocklist/allowlist. Default is false.

--ignore-input-errors

Don´t print invalid entries in the input. Default is false.

Additional options

-h, --help

Print help and exit

-V, --version

Print version and exit

From zmap 4.4.0-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.