Is the operator automatically determined if the owner has changed the operator?

Question

Payment systems

The person changed the operator and wants to replenish the account of some payment system or through the terminal. He enters a phone number. If a

[...] now the ownership of a number is determined not by the first numbers like 903, as it was when a specific number capacity was assigned to the operator, but by the region prefix and the operator in this 15-digit "route" number.

that is, do payment systems have access to this database of numbers in order to determine the operator automatically? Or if the system does not determine by the first numbers, then it clogs the bolt and offers to select the operator manually, as prescribed in the Qiwi api ?

spoiler

Я проектировщик интерфейсов, не бейте

Answer 1

Access should be.
If not, you need to connect.
Here:
https://zniis.ru/bdpn/operators/request
By the way, the table of routing numbers, just in case:
https://zniis.ru/bdpn/operators/avtomaticheskaya-v
... MSISDN number +79хххххххх by first digits will always belong to a specific operator. But if the subscriber left for another operator, there will be no "hole" in the table of routing numbers in his place, but he will appear in the table of MNP subscribers who have already moved for money)