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Operational. GSM 1900 / LTE 600 / LTE 700 / LTE 850 / LTE 1900 / LTE 1700 / LTE 2500 / 5G 600 / 5G 1900 / 5G 2500 / 5G 26000 / 5G 28000 / 5G 39000. Former Cook Inlet West Wireless, Voicestream; [ 127 ] now universal USA code. Also used for Mint Mobile, [ 128 ] Ting. [ 71 ]
Users can now switch carriers and keep their cell phone numbers, including prefix. Usually NSN are 10 digits long for mobile and personal services. 31100: Telespazio: 31101: Telespazio: 31105: Spal Telecommunications 313: Rete Ferroviaria Italiana: 319: Intermatica 320: Wind: 322: 13 (3 10) Wind operator reserved (routing number) 323: 12 ("32 ...
Telephone prefix. A telephone prefix is the first set of digits after the country, and area codes of a telephone number. In the North American Numbering Plan countries (country code 1), it is the first three digits of a seven-digit local phone number, the second three digits of the 3-3-4 scheme. In other countries, both the prefix and the ...
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]
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.
Study Group 2. Website. www.itu.int /rec /T-REC-E.212. The international mobile subscriber identity (IMSI; / ˈɪmziː /) is a number that uniquely identifies every user of a cellular network. [1] It is stored as a 64-bit field and is sent by the mobile device to the network. It is also used for acquiring other details of the mobile in the home ...
Belgium. Belgian telephone numbers consist of three parts: First '0', secondly the "zone prefix" (A) which has one or two digits for landlines and three digits for mobile phones, and thirdly the "subscriber's number" (B). Land lines always have nine digits. They are prefixed by a zero, followed by the zone prefix.
This is a list of international dialing prefixes used in various countries for direct dialing of international telephone calls.These prefixes are typically required only when dialling from a landline, while in GSM-compliant mobile phone (cell phone) systems, only the symbol + before the country code may be used [citation needed] irrespective of where the telephone is used at that moment; the ...