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Though Guam is a United States territory, some U.S. long-distance plans and courier services list Guam as an international location.As a result of Guam's being added to the North American Numbering Plan (NANP) in 1997, calls made to the U.S., Canada, or other participating countries from Guam (or to Guam from other NANP locations) only require the caller to dial a 1 followed by the area code.
Worldwide distribution of country calling codes. Regions are coloured by first digit. Telephone country codes, but also sometimes referred to as country dial-in codes, or historically international subscriber dialing (ISD) codes in the U.K., are telephone number dialing prefixes for reaching subscribers in foreign countries or areas via international telecommunication networks.
Prior to 2021, within Guam, only the seven-digit phone number was necessary. When a person in Guam calls anywhere in the United States or Canada, one simply dials "1" and then the area code and phone number. For callers in the U.S. or Canada calling to Guam, one first dials '1-671', followed by the seven-digit phone number.
Canada and the United States have experienced rapid growth in the number of area codes, particularly between 1990 and 2005. The widespread adoption of fax, modem, and mobile phone communication, as well as the deregulation of local telecommunication services in the United States during the mid-1990s, increased the demand for telephone numbers.
Users can switch carriers while keeping number and prefix (so prefixes are not tightly coupled to a specific carrier). If there is only 32.. followed by any other, shorter number, like 32 51 724859, this is the number of a normal phone, not a mobile. 46x: Join (discontinued mobile phone service provider) [3] 47x: Proximus (or other) 48x
The company was formed through the merger of cell phone carriers Guamcell Communications and HafaTel and was acquired in December 2006 by NTT Docomo, a spin-off of Japanese communication company Nippon Telegraph and Telephone. [1] In October 2008, Docomo Pacific was the first company on Guam to introduce a HSDPA network. [2]
1xx Special numbers 001 and 00xx Carrier selection codes 0x 2-digit geographic area codes 0xx 3-digit geographic area codes 0xxx 4-digit geographic area codes 0xxxx 5-digit geographic area codes 0x0 3-digit non-Geographic area codes (excluding 010) 0xx0 4-digit non-Geographic area codes (01x0, 0570, 0800, 0910, 0990)
These tables list the dialing codes (area codes) for calling land lines for various cities and districts in Japan, when dialing from within Japan. The leading 0 is omitted when calling from outside Japan. Cell phones use the dialing codes of 070, 080 or 090. IP-based phone services use the 050 dialing code.