Slovak Telekom - www.slovaktelekom.skOrange Slovensko – Slovensko – www.t-mobile.skTelefónica O2 Slovakia – Broadband Slovakia – www.upc.skSwan – www.swan.skSlovanet – www.slovanet.skGTS Slovakia – www.gts.skDigi Slovakia – www.digislovakia.skVizada Networks – www.vizada.comEnergotel – www.energotel.skDial Telecom – www.dial.skSatro - www.satro.skŽelezničné telekomunikácie –

Slovak Telekom -
Orange Slovensko –
T-Mobile Slovensko –
Telefónica O2 Slovakia –
UPC Broadband Slovakia –
Swan –
Slovanet –
GTS Slovakia –
Digi Slovakia –
Vizada Networks –
Energotel –
Dial Telecom –
Satro -
Železničné telekomunikácie –

Source: and Book of Lists 2009

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