elasticsearch/docs/reference/query-languages/esql/_snippets/functions/ip_prefix.md

IP_PREFIX [esql-ip_prefix]

Syntax

:::{image} ../../../../../images/ip_prefix.svg :alt: Embedded :class: text-center :::

Parameters

ip : IP address of type ip (both IPv4 and IPv6 are supported).

prefixLengthV4 : Prefix length for IPv4 addresses.

prefixLengthV6 : Prefix length for IPv6 addresses.

Description

Truncates an IP to a given prefix length.

Supported types

ip	prefixLengthV4	prefixLengthV6	result
ip	integer	integer	ip

Example

row ip4 = to_ip("1.2.3.4"), ip6 = to_ip("fe80::cae2:65ff:fece:feb9")
| eval ip4_prefix = ip_prefix(ip4, 24, 0), ip6_prefix = ip_prefix(ip6, 0, 112);

ip4:ip	ip6:ip	ip4_prefix:ip	ip6_prefix:ip
1.2.3.4	fe80::cae2:65ff:fece:feb9	1.2.3.0	fe80::cae2:65ff:fece:0000