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by simfree 1795 days ago
The Local Routing Number provides this value in the USA, and multiple carriers (eg:Twilio) offer daily deactivation reports from the cellular carriers so you can tell which numbers are unroutable.
1 comments
Scoundreller 1795 days ago
Canada isn't as progressive. Only telecoms can see which telecom a number points to and for the purpose of call-routing only.
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