• Alltel = xxxxxxxxxx@message.alltel.com
  • Amp’d Mobile = xxxxxxxxxx@vtext.com
  • AT&T = xxxxxxxxxx@mms.att.net
  • Boost Mobile = xxxxxxxxxx@myboostmobile.com
  • Centennial Wireless = xxxxxxxxxx@myblue.com added by kcirrab
  • Cingular (AT&T) = xxxxxxxxxx@mms.mycingular.com
  • Einstein PCS = xxxxxxxxxx@einsteinmms.com
  • Nextel = xxxxxxxxxx@messaging.nextel.com
  • Sprint = xxxxxxxxxx@messaging.sprintpcs.com or xxxxxxxxxx@pm.sprint.com
  • T-Mobile = xxxxxxxxxx@tmomail.net
  • US Cellular = xxxxxxxxxx@mms.uscc.net
  • Verizon Wireless = xxxxxxxxxx@vzwpix.com
  • Virgin Mobile = xxxxxxxxxx@vmobl.com

Full list here…