STC

regionRiyadh, Saudia Arabia

stc.com.sa

Mobily

regionSaudia Arabia

mobily.com.sa

Zain

regionKuwait

kw.zain.com

Nokia

parent coHMD

regionFinland

nokia.com

Huawei

regionChina

huawei.com

Verizon

verizon.com

AT&T

regionDallas, Texas

att.com

Cisco

regionChicago, IL

cisco.com

Türk Telekom

regionIsatanbul, Turkey

Sprint

parent coSoftBank

sprint.com

Vodafone Ghana

parent coVodafone

Ericsson

regionStockholm, Sweden

ericsson.com

TELUS Mobility

regionVancouver, Canada

telus.com

Freedom Mobile

parent coShaw

freedommobile.ca

Spectrum

spectrum.com

Batelco

regionBahrain

batelco.com

Orange

regionParis, France

orange.com

Vodafone Australia

Ofcom

ofcom.org.uk

Vodafone

regionUnited Kingdom

vodafone.com

Qualcomm Snapdragon

qualcomm.com

Mitel

mitel.com

Vidéotron

regionCanada

China Mobile

chinamobileltd.com

Sorenson

regionSalt Lake City, UT

sorenson.com

CommScope

regionHickory, North Carolina

commscope.com

Public Mobile

parent coTelus

publicmobile.ca

Vonage

parent coEricsson

regionHolmdel, New Jersey

Telekom Malaysia

tm.com.my

Belden

belden.com

FreeSWITCH

freeswitch.org

Zipwhip

regionSeattle, Washington

China Telecom Global Limited (CTG)

regionChina

VMedia

regionCanada

vmedia.ca

Alaska Communications

regionAnchorage, Alaska

Digitcom

regionToronto

digitcom.ca

Cable & Wireless

regionUnited Kingdom

cwc.com

Execulink

regionCanada

execulink.ca

Miracle Tele defunct

Foxconn

regionNew Taipei City, Taiwan

foxconn.com

United Group

united.group

Zoom Telephonics

regionBoston, MA

zoomtel.com

American Movil

americanmovil.net

The Portaro Group

regionCleveland, Ohio

theportarogroup.com

Times Fiber

timesfiber.com

SureCall

regionFremont, California

Millennium Supply

regionDelavan, Wisconsin

mymillennium.us

Mind C.T.I.

mindcti.com

Mint Mobile

mintmobile.com

Mobilicity

regionCanada

mobilicity.ca

Mobitel

regionIraq-Kurdistan

Mobovida

regionIrvine, California

mobovida.com

Momentum Telecom

regionBirmingham, Alabama

Moutiny

regionIraq

Movicel

Mtel

regionBulgaria

mtel.bg

MTN Telecom

regionSouth Africa

mtn.com

MTS/MTC

parent coSistema

regionRussia

spb.mts.ru

Mutare

mutare.com

MVS Comunicaciones

MyCall

regionNorway

mycall.no

MyRepublic

regionSingapore

Nepal Telecom

Netco

NetCom

parent coTeliaSonera

regionNorway

netcom.no

NetFortis

parent coSangoma

regionDallas, Texas

netfortris.com

Network9

Neustar

home.neustar

New Ulm Telecom

regionUnited States

Newport Network Solutions

regionNew Berlin, Wisconsin

newportnetworksolutions.com

NexcessNet

Nextbit

nextbit.com

Nexttel

regionCameroon

nexttel.cm

Nexus Telecom

nexVortex

regionHerndon, Virginia

NimbeLink

regionPlymouth, Minnesota

Nippon

regionJapan

npb.jp

Nippon Tel

regionJapan

Nitel

Nivid Infotech

regionSterling, Virginia

NobelCom

nobelcom.com

Nomadix

nomadix.com

NOS

nos.pt

Notify Technology

regionUnited States

NXT Digital

parent coHinduja

regionIndia

nxtdigital.in

O2

regionUnited Kingdom

o2.co.uk

O2 Czech Republic

o2.cz

O2 Deutschland

regionGermany

o2online.de

O2 Secure Wireless

regionSt. Augustine, FL

Telefónica Slovakia

o2.sk

O3B Networks

regionUnited Kingdom

Obi Worldphone

regionSan Francisco, CA

Odigo

regionParis, France

odigo.com

Oger Telecom

regionDubai, UAE

ogertelecom.com

Omantel

regionOman

omantel.om

One Web

regionUnited States

Ooredoo

regionMale, Maldives

ooredoo.mv

OpDecision

regionMarlton, New Jersey

OpenCloud Rhino

opencloud.com

OPPO

oppo.com

Optima Telekom

regionZagreb, Croatia

optima.hr

Optus

parent coSingtel

regionAustralia

optus.com.au

Orsus Xelent Technologies

regionChina

OXIO

regionQuebec

oxio.com

P&T Luxembourg

Palm Network

app.palm.io

ParkerVision

parkervision.com

PCTEL

pctel.com

Peak Internet

regionWoodland Park, Colorado

PEG Bandwidth

Pervasip

regionUnited States

Phone.com

PlanetOne

regionScottsdale, Arizona

planetone.net

PLDT

regionPhilippines

Port One

regionManchester, Connecticut

Processica

processica.com

Profit Advisory Group

regionMatthews, North Carolina

Proximus

regionBelgium

Prysmian Group

regionItaly

prysmiangroup.com

PTK

regionKosovo

ptkonline.com

Q LINK WIRELESS

regionDania, Florida

QualTek

regionWanamingo, Minnesota

qualtekservices.com

Qubee

Qwest

RADWIN

regionTel Aviv, Israel

radwin.com

RADX

radxtech.com

RBC Signals

rbcsignals.com

Ready Wireless

regionHiawatha, Iowa

Revio

regionAtlanta, Georgia

Rock Solid Internet & Telephone

Ruby Receptionists

regionPortland, Oregon

Sabsebolo

sabsebolo.com

Safaricom

SafeLink Wireless

safelinkwireless.com

Sandler Partners

regionHermosa Beach, California

sandlerpartners.com

Saudi Telecom

regionRiyadh, Saudi Arabia

Send Word Now

Shaw

parent coRogers

regionEdmonton, Canada

shaw.ca

Silo Wireless

regionBrantford

Sim Technology Group Ltd*

regionChina

SimplyConnect

simplyconnect.ca

Singtel

singtel.com

Sioux Falls Tower & Communications

regionSioux Falls, South Dakota

SK Telecom

parent coSK Group

regionSouth Korea

sktelecom.com

Skinny Mobile

regionNew Zealand

skinny.co.nz

Skytel

Slingshot NZ

slingshot.co.nz

Smart Choice Communications

regionLondon, Ontario

smartchoicecommunications.ca

SmartCell

smartcell.ca

SmartRG

smartrg.com

Sogetel Mobilité

Soleo Communications

Solo Mobile defunct

parent coBCE

solomobile.ca

SoluComp

Solutions by Text

regionDallas, Texas

Source Cable

regionCanada

sourcecable.ca

Southern Networks

Space Micro

regionSan Diego, California

Spark NZ

regionNew Zealand

spark.co.nz

Vodafone NZ

regionNew Zealand

vodafone.co.nz

Triton Emission Solutions

regionCanada

True

regionThailand

www3.truecorp.co.th

True North Management Services

tnmsllc.com

True*

regionThailand

www3.truecorp.co.th

Turkcell

turkcell.com.tr

U Mobile

regionMalaysia

u.com.my

Ucar Group

regionChina

UCWeb

regionChina

Unilava

unilava.com

United American

regionUnited States

United Internet

regionGermany

united-internet.de

United Television Ghana

UScellular

uscellular.com

Vala

parent coPTK

regionKosovo

valamobile.com

Valor International

VEON

parent coAltimo

regionAmsterdam, Netherlands

veon.com

Verified Call

verifiedcall.com

Verizon FiOS

verizon.com

Vertex Innovations

regionLittleton, Colorado

Verveba Telecom

regionRichardson, Texas

verveba.com

Viettel Group

region Hanoi

Viptela

parent coCisco

Vivacom

regionSofia, Bulgaria

vivacom.bg

vivo

vivo.com

VoApps

regionSandy Springs, Georgia

Vodafone Czech Republic

Vodafone Greece

Vodafone Hungary

Vodafone Ireland

Vodafone Malta

Vodafone Netherlands

Xplornet

Wistron

regionTaiwan

wistron.com

World Of Wireless

regionUnited States

WorldCall

parent coOmantel

regionPakistan

worldcall.com.pk

Worldwide Supply

WOW!

wowway.com

WUN Systems

Xima Software

ZOLEO

zoleo.com