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Phone numbers whose exchanges begin with 1 are also occasionally used as fictional numbers. Under the North American Numbering Plan, all telephone exchanges run from 200 to 999 with similar restrictions on telephone area codes.
The telephone number prefix 555 is a central office code in the North American Numbering Plan, used as the leading part of a group of 10,000 telephone numbers, 555-XXXX, in each numbering plan area (NPA) (area code).
Telephone numbers in Nigeria use an open numbering plan. They are composed of a combination of an area code and a local line or subscriber telephone number. Area codes consist of one digit ( Lagos, Ibadan and Abuja) or two digits.
Scammers and bad actors are always looking for ways to get personal info with malicious intent. Know how to recognize legitimate AOL websites, requests, and communications to keep your account...
For example, to call mobile number (223) 15 123–4567 (in Mar del Plata) from outside Argentina, the dialling sequence is: +54 9 223 123–4567. Non-geographic numbers such as 0800 or 0810 cannot be called from outside Argentina.
Caller ID spoofing. Example of caller ID spoofed via orange boxing; both the name and number are faked to reference leetspeak. Caller ID spoofing is a spoofing attack which causes the telephone network's Caller ID to indicate to the receiver of a call that the originator of the call is a station other than the true originating station.
Italian telephone numbers are defined by an open telephone numbering plan that assigns subscriber telephone numbers of six to eleven digits. In addition, other short codes are used for special services.
For example: [+][9][0] + [mobile network id number] + [seven digit number]. The following are the company identification numbers for the major mobile Turkish networks: Turkcell (530-539, 561 61X XXXX, 516 16X XXXX), Vodafone (540-549), Türk Telekom (500-509 and 550-559) and NETGSM (510 22X XXXX).