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TheprincipleofhidingphonenumbersinInternetcallsisbasedontheuseofcallerIDspoofingtechnology.CallerIDspoofingallowsacallertodisguisetheirphonenumberanddisplayadifferentnumberontherecipient'scallerID.ThistechnologyiscommonlyusedinVoiceoverInternetProtocol(VoIP)services,whichenableuserstomakephonecallsovertheinternet.WhenausermakesacallusingaVoIPservice,theserviceproviderwillreplacetheuser'sactualphonenumberwithadifferentnumberbeforesendingthecalltotherecipient.Thisallowsthecallertoprotecttheirprivacyandidentitybykeepingtheirrealphonenumberhidden.However,itisimportanttonotethattheuseofcallerIDspoofingtechnologyformaliciouspurposes,suchasscamcallsorfraudulentactivities,isillegalinmanycountries.Therefore,itisessentialtousethistechnologyresponsiblyandethicallytoavoidlegalconsequences.Overall,theprincipleofhidingphonenumbersinInternetcallsistoprovideuserswithameansofprotectingtheirprivacyandidentitywhilecommunicatingovertheinternet.