Telephone numbers in Switzerland

The Swiss telephone numbering plan implements the ITU-T recommendation E.164 and is designated E.164/2002, based on its last major revision in 2002.

In this plan the prefix 0 was discarded, and the area codes were defined differently, with 20 to 49 for geographic areas, 50 to 59 reserved, 60-69 for nationwide numbering, 70-79 for mobile services, 80-89 for shared-cost and toll-free numbers, and 90 for premium-rate services.

The plan was not implemented because it required too many phone number and prefix changes, with associated high costs.

[7] Liechtenstein previously used the Swiss telephone numbering plan with the area code 075.

[10] Consequently, calls from Switzerland now require international dialling, using the 00423 prefix and the seven-digit number.