> ## Documentation Index
> Fetch the complete documentation index at: https://docs.joinmassive.com/llms.txt
> Use this file to discover all available pages before exploring further.

# What geotargeting parameters are supported?

Massive Network supports various geographic parameters:

1. Country (Mandatory):
   * Two-letter [ISO codes](https://www.iso.org/obp/ui/#search/code) (e.g., US, GB, CA)
   * Required for all geotargeting requests

2. Optional Parameters:
   * Subdivision/State: Alphanumeric codes (e.g., CA for California)
   * City: Standard English spelling (case-insensitive)
   * ZIP/Postal Code: Format varies by country:
     * US: 5 digits (10001)
     * UK: 2-4 characters (SW1A)
     * Canada: 3 characters (M5V)
     * Other countries have specific formats

Learn more at [Geotargeting documentation](https://docs.joinmassive.com/residential/geotargeting)