Example image of eyePlorer eyePlorer map for 'E.164': ITU-T Numbering plan Public switched telephone network Telecommunication Telecommunications network Telephone number List of international call prefixes Integrated services digital network Routing Geography Identification Parameter Procedure (term) Assignment Criterion Reclamation Collaboration Telephone Carrier of Record H.323 Gatekeeper List of country calling codes MSRN Personal numbering Telephone number mapping 164 (number) E.214 Country code Numbering scheme NSAP address MSISDN Short code Ten-digit dialing International Mobile Subscriber Identity Distributed Universal Number Discovery Nominal number Marratech Subscriber Identity Module NAPTR record NDC Global Title Least-cost routing Telephone numbering plan Telephone numbers in Brazil X.25 Voice over Internet Protocol