[discrete]
[[esql-cidr_match]]
=== `CIDR_MATCH`

*Syntax*

[source,esql]
----
CIDR_MATCH(ip, block1[, ..., blockN])
----

*Parameters*

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

`blockX`::
CIDR block to test the IP against.

*Description*

Returns `true` if the provided IP is contained in one of the provided CIDR
blocks.

*Example*

[source.merge.styled,esql]
----
include::{esql-specs}/ip.csv-spec[tag=cdirMatchMultipleArgs]
----
[%header.monospaced.styled,format=dsv,separator=|]
|===
include::{esql-specs}/ip.csv-spec[tag=cdirMatchMultipleArgs-result]
|===