This function is designed to analyze and build a base of numbers that have been transferred to the other than original operator.

If a transfer is detected, it is added as an exception to the area code table with the corresponding description, while all calls made to that number after the first occurrence of the call are retargeted.

As a result of this function, the system builds a database of ported numbers that were once used. Only those transferred numbers for which any calls have been made are saved. With this solution, you do not need to store millions of numbers and no synchronization with UKE databases is required.

There may be many independent definitions, the function can work completely automatically.

Sample screenshots: