Alltel: ( ex; 5551234567@message.alltel.com )
AT&T: ( ex; 5551234567@txt.att.net )
Sprint: ( ex; 5551234567@messaging.sprintpcs.com )
Verizon: ( ex; 5551234567@vtext.com )
Straight-Talk: ( ex; 5551234567@vtext.com )
T-Mobile: ( ex; 5551234567@tmomail.net )
Voicestream: ( ex; 5551234567@voicestream.net )