Here's the latest bunch of providers... they should all work. If they don't, PLEASE let me know. I'll probably be releasing 1.4.6 soonish, as there's more work I want to get done, but I wanted to get the fixes live.
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Using LJ::TextMessage version 1.4.5
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Name: Ameritech (ACSWireless) [ ameritech ]
Name: Arch Wireless [ arch ]
Name: AT&T Wireless [ att ]
Name: Bell Mobility Canada [ bellmobilityca ]
Name: BellSouth Mobility [ bellsouthmobility ]
Name: BT Cellnet [ btcellnet ]
Name: CellularOne (Dobson) [ cellularonedobson ]
Name: Cingular IM Plus/Bellsouth IPS [ imcingular ]
Name: Cingular IM Plus/Bellsouth IPS Cellphones [ imcingular-cell ]
Name: Cingular New England [ cingular ]
Name: Cingular Wireless - (Houston) Texas [ cingular-texas ]
Name: Cingular Wireless - digitaledge.acswireless.com [ cingular-acs ]
Name: Fido Canada [ fidoca ]
Name: Manitoba Telecom Systems [ mtsmobility ]
Name: Metrocall Pager [ metrocall ]
Name: Nextel [ nextel ]
Name: NTELOS [ ntelos ]
Name: Other [ email ]
Name: Pacific Bell Cingular [ pacbell ]
Name: Pagenet [ pagenet ]
Name: PCS Rogers AT&T Wireless [ pcsrogers ]
Name: Powertel [ ptel ]
Name: Qwest [ qwest ]
Name: Skytel - Alphanumeric [ skytelalpha ]
Name: Sprint PCS [ sprintpcs ]
Name: Telefonica Movistar [ movistar ]
Name: Telus Mobility [ telus ]
Name: uBoot [ uboot ]
Name: Verizon Wireless [ vzw ]
Name: Verizon Wireless (formerly Airtouch) [ airtouch ]
Name: Voicestream [ voicestream ]
Name: Voicestream [ voicestream2 ]
Name: WyndTell [ wyndtell ]
Enjoy.