Dynamic Number Insertion Across Hundreds of Landing Pages



My website has large numbers of landing pages (even 1000s) that involve different cities/states.

The URL are very close - like this:

[1000s more]

How can I do dynamic number insertion across these pages without having to create 1000s of phone numbers?

For example, other services let you do this by using a symbol like * at the end of the initial URL OR Google Analytics let’s you choose a CONTAIN instead of EXACT so you wouldn’t have to create a new system for every single landing page.