If i was to send out a text message from a script...
Is there any way to guess the provider from the phone number?

I know there is a service called www.teleflip.com that does it somehow.

Say the extension 347 is synonymoys with at&t and then the user keeps the number and switches to verizon or something...

how does this all work?


basically.. after you know the carrier.. you send message to number@carrier.com [their special domain]


Thanks for any help.