Customer needs "From Number" in API to change the number they are calling from

Customer has over 150+ numbers that they cycle through to make sure they never get "Scam likely" On their caller ID, They are heavy API Users and are trying to get this done as soon as possible. Payment tier: Enterprise Severity level: 1 - Urgent (P1) - Severe issue that disrupts essential functionality or availability of the service for multiple Users or for one Enterprise customer.