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Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.
The webpage lists mobile telephone prefixes by country.
040 – City and Province of Trieste; 041 – City of Venice, including landside Mestre area; 0421 – Metropolitan city of Venice – area of San Donà di Piave 0422 – Province of Treviso, including its capital Treviso
A reverse telephone directory (also known as a gray pages directory, criss-cross directory or reverse phone lookup) is a collection of telephone numbers and associated customer details.
A Swiss rotary telephone dial from the 1970s showing the telephone's number (94 29 68), along with those of various local emergency services Telephone numbers for sale in Hong Kong
Direct-distance dialing (DDD) was first introduced in areas with common-control switching (panel and crossbar) in the 1950s.These areas had used 411 for directory assistance, and because of the ability of common-control switching to analyze the initial digits of a number in a "sender" before routing the call, these areas did not require the dialing of an initial 1 to initiate a long-distance call.
Rankings Country or regions # of phone numbers Population Phone #'s/100 citizens Date of evaluation World: 7,950,000,000+ 7,621,018,958 104.32 2019/12 [1] [2]: 1
These numbers are called grüne Nummer (German) / numéro vert (French) / numero verde (Italian), all meaning "green number". In Taiwan, the toll-free prefix is 0800-xxx-xxx or 0809-xxx-xxx, but not all Taiwanese mobile numbers can call toll free numbers. A toll-free subscriber can decide to restrict a number due to high per-minute mobile rates.