toovoip - no roaming
toolani
MobileVOIP international calls
Finarea
12Voip
CheapVoip廉價線
ActionVoip節儉的生活
Talk360: International Calling
Talk360 Group B.V.
InterVoip便宜電話
FreeVoipDeal
JustVoip VoIP的調用
GoVoip
5060.Cloud