The Pennsylvania Premise
Identification Information Web site

Who Handles Registration

The NAIS is a standardized system designed to protect animal health. Through it, APHIS will assign nationally unique numbers to animal premises based on their specific geographic locations.

Most "farm numbers" currently in existence do not meet APHIS' needs for one of more of the following reasons:

  1. they are county or State specific, so the numbers distributed through them are not nationally unique;
  2. they correlate a number with the address of the individual who owns the farm or ranch instead of with the actual geographic location of the animals;
  3. or they assign numbers that are subject to change based on ownership of the land.

Under the NAIS, a premises number would remain the same for a specific tract of land even if ownership of that property changes.