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> along with fake ringing that companies including T-Mobile do to make it seem like the call is being connected to these high cost areas, meanwhile the person your calling doesn't ever receive the call

Interestingly enough T-Mobile has started giving me a notice before calls to some of these providers saying that I'll be charged 1 cent a minute for the call.

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T-Mobile claims they are only doing this on traffic pumped numbers that cost them significantly more than that to call, but from the little I've looked into it they're charging this fee on paid conference call numbers that cost $0.002/min to call in the ratedecks I've checked (after doing an LRN DIP of course).

I've reached out to T-Mobile's business team repeatedly on an account that I'm a POC on to get a full list of surcharged numbers, but they are unwilling to disclose this basic information. This kind of stuff is what keeps businesses on Sprint and Verizon, at least they know their NANPA calls will get delivered reliably without surprise surcharges!

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