Aircel India
Airtel Andhra Pradesh, India
Airtel Karnataka, India
Alaska Communications USA
Aliant Canada
Alltel (Allied Wireless) USA
Altiria Spain
Ameritech USA
Andhra Pradesh AirTel India
Andhra Pradesh Idea Cellular India
aql UK
AT&T Wireless USA
AU by KDDI Japan
Bell Mobility & Solo Mobile Canada
BellSouth USA
Bluegrass Cellular USA
Bluesky Communications American Samoa, USA
Boost Mobile USA
Bouygues Telecom France
Box Internet Services SMS Gateway Switzerland
SFR France
C Beyond (All Page Wireless)
Cellcom USA
Cellular South USA
Centennial Wireless USA, Puerto Rico, and the U.S. Virgin Islands
Chariton Valley Wireless USA
Chennai Skycell / Airtel India
Chennai RPG Cellular India
China Mobile
Cincinnati Bell Cincinnati, Ohio, USA
Cingular
Cingular (Prepaid) USA
Cingular (GoPhone prepaid) USA
Claro Brasil
Claro Nicaragua
Claro Puerto Rico
Cleartalk Wireless(Cleartalk) USA
Connection Software (CSoft) United Kingdom
Comcel Colombia
Cricket USA
C Spire Wireless USA
CTI Móvil (Now Claro) Argentina
Delhi Airtel India
Delhi Hutch India
Digicel Dominica(no-area-code)
E-Plus Germany
Edge Wireless USA
Element Mobile USA
Emtel Mauritius
Esendex UK
Esendex USA
Esendex Spain
Fido Canada
Freebie SMS Europe
General Communications Inc. Alaska, USA
Globalstar(satellite) International
Globul Bulgaria
Goa Airtel India
Goa BPL Mobile India
Goa Idea Cellular India
Golden State Cellular California, USA
Gujarat Idea Cellular India
Gujarat Airtel India
Gujarat Celforce / Fascel India
Haryana Airtel India
Haryana Escotel India
Hawaiian Telcom Wireless Hawaii, USA
Hay Systems Ltd (HSL) UK
Helio South Korea and USA
Himachai Pradesh Airtel India
ICE Costa Rica
Iridium (satellite) International
i-wireless (Sprint PCS) USA
Kajeet USA
Karnataka Airtel India
Kerala Airtel India
Kerala BPL Mobile India
Kerala Escotel India
Kolkata Airtel India
Koodo Mobile Canada
LongLines USA
Loop (BPL Mobile) Mumbai, India
M1 Singapore
Madhya Pradesh Airtel India
Maharashtra Airtel India
Maharashtra BPL Mobile India
Maharashtra Idea Cellular India
Más Móvil Panama
Mediaburst UK
Ncell (Previously Mero Mobile) Nepal
MetroPCS USA
Mobiltel Bulgaria
Mobitel Sri Lanka
Movistar Argentina
Movistar Colombia
Movistar Spain
Movistar Spain and Latin America
MTN South Africa
MTS Mobility Canada
Mumbai Airtel India
Mumbai BPL Mobile India
My-Cool-SMS United Kingdom
Nextel USA
Nextel México
Nextel Argentina
NTT DoCoMo Japan
O2 Germany
OgVodafone Iceland
Orange Polska Poland
Orange Netherlands
Orange United Kingdom
Ozeki Hungary
Page Plus Cellular(Verizon MVNO) USA
Panacea Mobile Worldwide
Pioneer Cellular USA
Personal Argentina
Plus Poland
Pocket Wireless Texas, USA
Pondicherry BPL Mobile India
PC Telecom Canada
Punjab Airtel India
Qwest Wireless USA
Red Pocket Mobile (AT&T MVNO) USA
Rogers Wireless Canada and USA
RoutoMessaging Worldwide
SaskTel Canada
Sendega Norway
Setar Mobile email (Aruba) Aruba
Siminn Iceland
Simple Mobile USA
SMS Broadcast Australia
SMS Central Australia
Starhub Enterprise Messaging Solution(powered by Soprano) Singapore
Southernlinc USA
South Central Communications USA
Spikko Israel
Sprint (PCS) USA
Nextel (Sprint) USA
Straight Talk USA
Sunrise Communications Switzerland
Syringa Wireless USA
TeletopiaSMS Norway
T-Mobile USA
T-Mobile (Optus Zoo) Australia
T-Mobile Austria
T-Mobile Croatia
T-Mobile Germany
T-Mobile Netherlands
Tamil Nadu Airtel India
Tamil Nadu Aircel India
Tamil Nadu BPL Mobile India
Tele2 Sweden
Telecom New Zealand
Teleflip USA
CS Networks Serbia
Telstra Integrated Messaging (powered by Soprano) Australia
Telus Mobility Canada and USA
TellusTalk Europe
TextMagic UK
Tigo (Formerly Ola) Colombia
TIM Italy
TracFone (prepaid) USA, Puerto Rico, and the U.S. Virgin Islands
Txtlocal UK
Unicel USA
UniMóvil Corporation UK
US Cellular USA
USA Mobility
UTBox Australia
Uttar Pradesh West Escotel India
Verizon Wireless USA
Viaero USA
Vivacom Bulgaria
Vivo Brasil
Virgin Mobile Canada
Virgin Mobile USA
Virgin Mobile United Kingdom
Vodacom South Africa
Vodafone Germany
Vodafone Chuugoku/Western,Japan
Vodafone Hokkaido, Japan
Vodafone Hokuriku/Central North, Japan
Vodafone Kansai/West, including Osaka, Japan
Vodafone Kanto/Koushin/East, including Tokyo, Japan
Vodafone Kyuushu/Okinawa Japan
Vodafone Skikoku, Japan
Vodafone Touhoku/Niigata/North, Japan
Vodafone Spain
Vodafone New Zealand
West Central Wireless USA
Willcom Japan
Wind Mobile Canada
XIT Communications USA - Texas