9MOBILE
Aircel
Airtel
Akamai
Algar
Altibox
Anchorfree
Arnet
AsiaCell
AT&T
Axtel
AxtelExtremo
Banda
Belgacom
Bell
Bellsouth
Bharti Airtel
Bharti Braodband
Bouygues
British Telecom
Broadnet
Cablemas
Cable One
Cablevision
Cablevision Mexico
Cablevision Monterrey
Cable & Wireless
Cabovisao Televisao por Cabovisao s.a.
Canal Digital
CBeyond
Celcom Malaysia
Cellcard
Cellco
Centurytel
Charter
China eGovNet Information Center
China Mobile
CHINANET
China TieTong
Cincinnati Bell
Cisco
Claro
Claro Argentina
Clearwire
Cogeco
Cogent
Colleges and Universities
Colombia Movil
ComCast
Covad
Cox
Deutsche Telekom
Dialog
Digi
Digicel
Dish
DNA
Dodo
DTAC Thailand
Du
Earthlink
Eclipse
Eidsiva
Elisa
Elisa Saunalahti
Embarq
Empresa Brasileira
ENTEL
ETB
ETISALA
Etisalat
Euskaltel
Exetel
Fairpoint
Fastweb
Fibertel
France Telecom
Free
Frontier
Get
Gigared
Green
GVT
H3g
Hughes
Hutchison
Idea
iiNet
Indosat
Insight
Internode
INWI
iPrimus
IUSACELL
Jazz
Kabel Overig
KDDI
KPN
Level 3
LimeLight
M1
Maxis
Mediacom
Megacable
MEGAFON
Meo
Meo Servicos de Comunicacoes e Multimedia s.a.
Mobitel
Movistar
Movistar Argentina
Movistar Mexico
MPT
MTN
NCELL
Netia
NET VIRTUA
New Guoxin
Nextgentel
NIB
Nos Acores Comunicacoes s.a.
Nos Communications
Nos Comunicacoes s.a.
Nos Madeira Comunicacoes s.a.
Nos Network Operations
NTT
Numericable
O2
Oceanic
OI Internet
Online
Ooredoo
OptusNet
Orange
Other
Paetec
Peer 1
Planet Technologies
PLDT
Plusnet
Qwest
RCN
ROBI AIRTEL
Rogers
Scarlet
SFR
Shaw
Singapore Telco
Singtel
Sky
Smartfren
Societe Francaise du Radiotelephone
Societe Francaise du Radiotelephone s.a
Societe Francaise du Radiotelephone s.a.
Softbank
Solcon
Sprint
Starhub
Suddenlink
Surfnet
Swisscom
TalkTalk
Tata Communications
TDC
TDS
Teksavvy
Telcel
Tele2
TELE2
Tele2 Nederland b.v
Tele2 Sverige ab
Telecable
Telecentro
Telecom
Telecom Italia
Tele Finland
Telefonica
Telekom Malaysia
Telenet
Telenor
Telfort
Telmex
Telstra
Terra
TIM
TimeWarner
T-Mobile
Totalplay
TPG Internet
TRUE
Turkcell
Turk Telekom
U Mobile
Unknown
UPC
UUnet
VECTRA
Velcom
Ventelo
Verizon
Vinaphone
Virgin
Vivo
Vodacom
Vodafone
Vodafone India
Vodafone Italy
Vodafone Spain
Vodafone Turkey
Von Hudman Group LLC
webe(formerly Packet One Networks - P1)
Westnet
Wind Italy
Windstream
XL
XO
XS4ALL
Yandex
Yes
Zain Sudan
Ziggo