Numbering and telephony

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 individual numbers. These numbers are used to offer services in the following categories: Freephone Numbers (0800), Shared-cost Numbers (084x), 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.

The technical and administrative regulation concerning the identification of the calling line sets out the requirements for telecommunications service providers on transmitting the calling line number.

Use of a carrier selection code (CSC) allows subscribers to choose their provider for national or international calls. 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.

Elements enabling identification of persons, IT processes, machines, apparatus or telecommunication equipment taking part in telecommunications (e.g. ADMD names, NSAP addresses).

Numbering plan for the Swiss telex network. ITU-T Recommendation F.69 describes the numbering format of a telex network.

Numbering plan for public data networks. ITU-T Recommendation X.121 describes the format of data network identification codes (DNIC). All DNICs consist of four digits. The first three digits identify a country; this is the data country code (DCC). The fourth digit enables identification of a network specific in the country.