Federal Office of Communications

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Numbering and telephony

Information on telephone numbers used in the telecommunications sector, number portability, carrier selection, migration of the areas code 01 to 044, directory services, laws and decrees etc.


Numbering plan for Swiss telephone numbers
Information on allocation and management of telephone numbers for fixed network and mobile telephone services (e.g. 031, 032, 078 or 079) and codes (e.g. 098013).
List of number ranges and codes allocated to telecommunication services providers.


Here you will find consumer information on the numbers which are allocated individually.
These numbers are used to offer services in the following categories: Freephone Numbers (0800), Shared-cost Numbers (084x), Personal Numbers (0878), Business and Marketing (0900), Games and Competitions (0901) and Adult Entertainment (0906).


There are two types of short numbers: those used for services based on the telephone service and those used for SMS/MMS content services offerings.

Use of a carrier selection code (CSC) allows subscribers to freely choose their provider for national or international calls whether automatically (preselection) or cal-by-call. CSCs are composed of 5 digits and are allocated by OFCOM to telecommunication services providers.

Regulations concerning number portability between telecommunication services providers.
Information on allocation and management of carrier selection codes (e.g. 098013) which are used as routing addresses.


Services providing access to the complete list of subscribers to all providers of telecommunication services forming part of the universal service who have opted to appear in the public telephony service directory. Access to these services is possible in a variety of ways, in particular via the public telephony service (directory enquiries) or via other telecommunication services (data transmission, SMS/MMS, WAP, GPRS, internet, etc...).



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