3 ms·

So, how do you lookup a phone number's provider for free?

• alfredosequeida 5y ago
  Not the most scientific approach, but you could send a message to every provider using the same number. If you get a "message not received" bounce back, then that's a good indication of which carriers are not the correct carrier.
• woodruffw 5y ago
  Not free for meaningful numbers of requests, but I've used APIs like numverify[1] to do this before. There are probably per-carrier APIs you can request access to. [1]: https://numverify.com/ https://numverify.com/
• AviationAtom 5y ago
  That was what I came to checkout the code for, thinking they put some cool logic in there.