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by joecool1029 1322 days ago
My guess is it depends on prepaid carrier. Some of them appear as 'voip' providers. Funny thing is they have no way to detect actual carrier VOIP services like T-Mobile DIGITS as being VOIP.

If it's first party prepaid, Cricket looks the same as AT&T for example. Some carriers do stuff like buy bandwidth.com numbers, these will show up as voip even if it's only usable from a phone plan.