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

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

`CIDR_MATCH` accepts two or more arguments. The first argument is the IP
address of type `ip` (both IPv4 and IPv6 are supported). Subsequent arguments
are the CIDR blocks to test the IP against.

[source,esql]
----
FROM hosts
| WHERE CIDR_MATCH(ip, "127.0.0.2/32", "127.0.0.3/32")
----
