Alpha-Web
America_On_Line
APICNET
ASAHI_Net
Asakanet
ASCII_Net
AVIS
Bekkoame
BNN
Campusnet
CISNet
COARA
Compuserve
Cyber_Technologies
Densan
Famille_(Marubeni)
Ganseki
GNJ_Spectrum
Global_OnLine_Japan
HA_Telecom
Hare_Net
IFNET
Internet_Initiative_Japan
IMASY
InfoSphere_(NTT)
InfoWeb_(Fujitsu)
Interbroad_Fukui
Internet_Access_Center
Interlink
InterRamp_(PSI_Japan) JETON_Network_Service
KIWI
Kyoto_INet
Mesh_(C&C_NEC)
NetSpace_(Hitachi)
Niftyserve
Nihon_IBM
Nippon_Infosite_Network
NIS
ParkPlace_(CET)
RimNet
SaiNet
Spin/InterSpin_(AT&T_Jens)
tcp-ip
TWICS
Typhoon
Internet_WIN
Yamanashi_Internet