3 River Wireless
    Advantage Communications
    Airtouch
    Alltel
    Alltel PCS
    Alltel Cellular
    Alpha Now
    Ameritech Paging
    Ameritech Clearpath
    Ameritech Digital Edge
    Arch Wireless
    Arch Pagers
    AT&T Wireless TDMA
    AT&T Pocketnet GSM/PCS
    Beepwear
    Bell Atlantic
    Bell Mobility
    Bell South (Blackberry)
    Bell South SMS
    Bell South Wireless
    Bell South DCS
    Blackfoot PCS
    Bluegrass Cellular
    Carolina Mobile Communications
    Cellular One - USA
    Cellular One - East Coast
    Cellular One - South West
    Cellular One - SF
    Cellular One - Boston
    Cellular One - Amarillo TX)
    Cellular One - My Cell One
    Cellular One - Bend
    Cellular One - NW Iowa
    Cellular One - Rural
    Cellular South
    Central Vermont Communications
    CenturyTel
    Cingular Wireless (GSM)
    Cingular Wireless (TDMA)
    Cingular Text Messaging
    Clearnet
    Comcast
    Communication Specialists
    Cook Paging
    Digi-Page / Page Kansas
    GrayLink / Porta-Phone
    Cook Paging
    Fido / Microcell
    Green's Communications
    GTE Alert
    GTE PageGate
    GTE Air
    Hickory Tech
    Highland Paging
    Houston Cellular
    Infopage Systems
    The Indiana Paging Co
    JSM Tele-Page
    Lauttamus Communication
    MCI Phone
    MCI Page
    Metrocall
    Metrocall 2-Way
    Midwest Wireless
    MobileComm
    Morris Wireless
    Motient
    MTA Wireless
    Nebraska Wireless
    Nextel
    Nextel Page
    Nextel Brazil
    Ntelos
    NPI Wireless
    Omnipoint
    Omnipoint PCS
    Online Beep
    Pacific Bell
    Pagemart
    Pagemart Advanced 2-Way
    Pagemart Canada
    PageNet Canada
    PageOne NorthWest
    Plateau Wireless
    Primco
    ProPage
    Qwest
    RAM Page
    Rogers TDMA
    Rogers GSM
    Satellink
    SMF/Schuylkill Mobile Fone
    SBC Ameritech Paging
    Southern LINC
    Southwestern Bell
    Sprint
    Sprint PCS
    SkyTel
    SkyTel Pagers
    ST Paging
    SunCom
    SunCom TMS
    SureWest
    T-Mobile
    Teletouch
    Telus Mobility
    TSR Wireless
    TSR Wireless (Alpha)
    US Cellular
    US West
    Verizon (Cell)
    Verizon (Cell) 2
    Verizon (Pagers)
    VoiceStream
    WebLink Wireless
    Wyndtell