Nomi Mobile(uses Vodafone UK)
http://oldsite.nomi-mobile.com/ Nomi is one of the virtual network operators in United Kingdom uses Vodafone. Nomi-mobile PAYG is a no contract, no commitment and no monthly bills way of making calls. The biggest advantage of this is that it is impossible to run up a huge bill as you only make calls once you have already paid for them
Pivotel(Using Telstra )
http://www.pivotel.com.au/ Pivotel Group Pty Limited is one of four Australian licensed mobile telecommunications companies. Pivotel provides high quality services including voice and data communications right across Australia. Pivotel's suite of products includes Satellite, Cellular, Voice and Data enabled products and services
http://giffgaff.com/ giffgaff is a mobile phone service in the United Kingdom. It operates as a mobile virtual network operator using the O2 network.
http://www.quebecor.com/ Quebecor is one of Canada's largest media companies.It delivers service such as analog and digital broadcasting, cable and wireless telephone.It is serves a mobile network service by using the netwok of Rogers communications.
http://www.dekatel.nl/ Dekatel at the focus rather than on providing a single subscription or equipment but rather to the assumption of a long collaboration. Besides cheap subscriptions to unique conditions and competitive pricing for hardware, quality is just as important
Austar(using Optus, Telstra)
http://www.austarmobile.com.au/ Austar is one of the virtual network providers in australia using Optus for GSM network, Telstra for CDMA network.AUSTAR is Australia's premier pay television provider in regional and rural Australia and capital cities Hobart and Darwin. Australia's second largest Pay TV provider
Mobile Vikings(using BASE)
http://mobilevikings.com/en Mobile Vikings is an online mobile operator that offers a prepaid full option formula focused on mobile data. All the services concerning mobile telephony, mobile internet - and mobile data services offered via a SIM card based on reloadable prepaid call
http://www.lycamobile.se/ Lycamobile is a mobile virtual network operator (MVNO) that sells international prepaid sim cards to people wanting to make calls abroad. Without delving into too much technobabble, an MVNO leases radio frequency from mobile phone operators
JIM Mobile(using BASE)
http://www.jimmobile.be/ JIM Mobile is one of the Virtual network operators in Belgium uses the network BASE which is owned by KPN Group. JIM Mobile is a collaboration between KPN Group Belgium SA.'s And JIM TV (VMMA) and uses the modern network of high quality KPN Group Belgium