Brian Dunning's FileMaker Custom Functions

IsValidIP ( IPaddress )

Checks if 'IPaddress' contains a valid IP address.

  Average rating: 4.1 (40 votes) Log in to vote

Theo Ros   Theo Ros - Show more from this author

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  Sample input:
IsValidIP ( "" )
  Sample output:

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

Checks if 'IPaddress' contains a valid IP address.
The given IPaddress should be in dotted format.

Returns True (1) if IPaddress is valid, False (0) if not. An empty string also returns False.

In: IPaddress - the dotted IP address as string
Syntax: IsValidIP ( "" )

Return type: Number (boolean)



Nick Lightbody   Nick Lightbody, Deskspace Systems Limited
Jul 6, 2010
Very useful, works as described, thanks


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