The $100 retail rebate voucher call center pool is a melting pot for sure.
They could route to anywhere on the sub continent, Mexico, Jamaica or The Bahamas, as well as plenty of them from the USA as well always in the mix.
Literally tens of thousands of numbers are connected by the telcos into this inbound
system.
I have a separate database for these numbers my system picks up all the time while searching new territory.
There is 5200 of them in the database which I’ve listed in a variety of threads, but mainly this thread since December of last year.
Every now and then numbers are retired by the telcos and either go dead or may alternate to a standard leadgen
These are all mostly in the toll free prefixes also.
The amount of them in all the area codes is unimaginable, possibly a million or more numbers would not be unreasonable to assume, as I know they can be on every single number, for hundreds of consecutive numbers in some areas
There are no repeated numbers either as it cannot happen, known numbers are not noted twice in any database lists unless they alter in a description in any way.
The only time a number has multiple entries is when it changes scripts daily from Facebook, to Ca$hApp, to PayPal, back to Facebook, etc. which many of them do every day.
I have some descriptions that are a mile long because of all the script changes they have done without changing the number, which is active for months and occasionally even years