Eiolon Posted January 6, 2012 Share Posted January 6, 2012 How do websites determine what provider is providing service to a cell phone number? Is there a database that they tie into? I know it can't be based on the number itself since you can port numbers between providers. I am just asking because I have a PHP script to send text message reminders to people but currently I need to select the service provider. It would be nice to just enter the number and query a database to see the provider and then send the message. Quote Link to comment Share on other sites More sharing options...
Pikachu2000 Posted January 6, 2012 Share Posted January 6, 2012 They typically use an SMS gateway, and therefore don't need to know who the provider is. Quote Link to comment Share on other sites More sharing options...
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