Atytention, certains préfixes sont exclus des appels en illimité :
Afrique du Sud-NGN (271, 272, 273, 274, 275, 278)Allemagne-NGN (49180), Allemagne-Personal numbers (4970), Autriche-NGN (438), Australie-NGN (6113), Belgique-non geo (3270), Bulgarie-Special Services (3595, 3599), Canada-North West Territory (125023, 1250321, 1250471, 1250500, 125077, 1867), Colombie-Lex (5714699, 571, 572, 574, 575, 576, 577, 578), Espagne-non geo (3470, 349), Etats-Unis-Alaska (1907), Etats-Unis-High (120, 121, 122, 123, 124, 125, 126, 127, 128, 130, 131, 132, 133, 134, 135, 136, 138, 140, 141, 142, 143, 144, 146, 147, 148, 150, 151, 152, 153, 154, 155, 156, 157, 158, 160, 161, 162, 163,164, 165, 166, 167, 168, 170, 171, 172, 173, 174, 175, 176, 177, 178, 180, 181, 182, 183, 184, 185, 186, 187, 190, 191, 192, 193, 194, 195, 197, 198), Finlande-Corporate services (3581, 3582, 3583, 3586, 3587, 3588), Finlande-NGN (35871), Irlande-Paging (35382), Irlande-Universal access (3537, 3538), Irlande-VoIP (35376), Japon-IDC (8131, 81616, 81990), Japon-IP Phone (8150), Royaume-Uni-Local et Personal numbers (44843, 44844, 44345, 4456, 44820, 44845, 4470), Norvège-Special services (470, 471, 4720, 4780, 4781, 47880), Pérou-Rural (5118, 514, 515, 516, 517, 518)
