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Users can switch carriers while keeping number and prefix (so prefixes are not tightly coupled to a specific carrier). 7 Claro 8: Instituto Costarricense de Electricidad (Kölbi) Croatia +385: 91: 9: A1 Hrvatska: Due to Mobile number portability the prefix of an existing number does not determine the carrier. Any new number will follow the ...
This list contains the mobile country codes and mobile network codes for networks with country codes between 300 and 399, inclusively – a region that covers North America and the Caribbean. Guam and the Northern Mariana Islands are included in this region as parts of the United States.
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]
As a matter of fact, each area code has only a limited number of prefixes assigned, and these are locally limited within the area. For example, the (0342) area has numbers with a 456- prefix, mostly located in the centre of Santa Fe. It also has numbers with a 460- prefix, usually for phone lines in the north east of the city.
For example, individual extensions at Universität des Saarlandes can be dialed directly from outside via their four-digit internal extension +49-681-302-xxxx, whereas the university's official main number is +49-681-302-0 [8] (49 is the country code for Germany, 681 is the area code for Saarbrücken, 302 the prefix for the university).
The presentation of a telephone number with the plus sign indicates that the number should be dialed with an international calling prefix, in place of the plus sign. The number is presented starting the country calling code. This is called the globalized format of an E.164 number, and is defined in the Internet Engineering Task Force RFC 2806. [6]
LIST OF FIXED ALLOCATIONS [3] Number range Area 538 XXXX: Ramotswa Area 539 XXXX 471 XXXX: Mahalapye Area 472 XXXX 476 XXXX 477 XXXX 659 XXXX: Gantsi Area 490 XXXX: Palapye Area 491 XXXX 492 XXXX 493 XXXX 494 XXXX 495 XXXX 260 XXXX: Selebi-Phikwe Area 261 XXXX 262 XXXX 264 XXXX 240 XXXX: Francistown Area 241 XXXX 242 XXXX 243 XXXX 244 XXXX 248 ...
The dialing rules may include variable-length dialing for area code, trunk access and international access prefixes, central office/service access numbers, and calling cards tone numbers. [ 2 ] [ 3 ] With this approach, phone numbers stored in the phone book remain unchanged when the user moves to a different geographical location or selects a ...