ipv4_netmask_suffix()

Learn how to use the ipv4_netmask_suffix() function to return the value of the IPv4 netmask suffix from an IPv4 string address.

Returns the value of the IPv4 netmask suffix from an IPv4 string address.

Syntax

ipv4_netmask_suffix(ip)

Parameters

NameTypeRequiredDescription
ipstring✔️An expression representing an IPv4 address. IPv4 strings can be masked using IP-prefix notation.

Returns

  • The value of the netmask suffix the IPv4 address. If the suffix isn’t present in the input, a value of 32 (full netmask suffix) is returned.
  • null: If parsing the input as an IPv4 address string wasn’t successful.

Example: Resolve IPv4 mask suffix

datatable(ip_string:string)
[
 '10.1.2.3',
 '192.168.1.1/24',
 '127.0.0.1/16',
]
| extend cidr_suffix = ipv4_netmask_suffix(ip_string)

Output

ip_stringcidr_suffix
10.1.2.332
192.168.1.1/2424
127.0.0.1/1616

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