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Ranges for fictitious telephone numbers are common in most telephone numbering plans. One of the main reasons these ranges exist is to avoid accidentally using real phone numbers in movies and television programs because of viewers frequently calling the numbers used.
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. This can lead to a display showing a phone number different from that of the telephone from which the call was placed.
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).
List of United Kingdom dialing codes. In the United Kingdom, telephone numbers are administered by the Office of Communications ( Ofcom ). For this purpose, Ofcom established a telephone numbering plan, known as the National Telephone Numbering Plan, which is the system for assigning telephone numbers to subscriber stations.
List of Germany dialing codes. The regulation of telephone numbers in Germany is the responsibility of the Federal Network Agency ( German: Bundesnetzagentur, BNetzA) of the German government. The agency has a mandate to telecommunications in Germany and other infrastructure systems.
In May 2008, cellular phone numbers with '5' as the beginning were also introduced. Due to numerous phone scams spoofing local telephone numbers, calls started from outside Hong Kong using a local number now show the Hong Kong prefix +852 before the phone numbers in Caller ID.
To make a phone call to Indonesia from abroad, the following formats are used: For calls to landlines, callers dial +62, followed by the area code and subscriber's number, omitting the '0', hence a number in Jakarta would be dialled as +62 21-xxxx-xxxx.
The IMEI (15 decimal digits: 14 digits plus a check digit) or IMEISV (16 decimal digits: 14 digits plus two software version digits) includes information on the origin, model, and serial number of the device.
Only exception in this is the call center numbers which start with 444, the call center numbers cannot be dialed with area code, they must be dialed with 7 digit from any phone (Landlines & Mobiles) in the country. The number format is 444 XX XX.
The first two or three digits after the zero are the area code. The possibilities are: (0xx) xxxx xxxx (for landlines), 09xx xxx xxxx (for cellphones) and 099xx xxx xxx (for MVNO ). When making a call within the same landline area code, initial 0 plus the area code must be omitted.