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  2. Caller ID spoofing - Wikipedia

    en.wikipedia.org/wiki/Caller_ID_spoofing

    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.

  3. Fictitious telephone number - Wikipedia

    en.wikipedia.org/wiki/Fictitious_telephone_number

    In Hungary, telephone numbers are in the format 06 + area code + subscriber number, where the area code is a single digit 1 for Budapest, the capital, followed by a seven digit subscriber number, and two digits followed by either seven (for cell phone numbers) or six digits (others). for other areas, cell phone numbers or non-geographic numbers ...

  4. International Mobile Equipment Identity - Wikipedia

    en.wikipedia.org/wiki/International_Mobile...

    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. The structure of the IMEI/SV is specified in 3GPP TS 23.003.

  5. 555 (telephone number) - Wikipedia

    en.wikipedia.org/wiki/555_(telephone_number)

    Before "555" or "KLondike-5" gained broad usage, scriptwriters would sometimes invent fake exchanges starting with words like "QUincy" or "ZEbra", as the letters "Q" and "Z" were not used on the old dial phones. Numbers in the format "Zenith" X-XXXX, while not directly dialable, were not fictional.

  6. Premium-rate telephone number - Wikipedia

    en.wikipedia.org/wiki/Premium-rate_telephone_number

    Some four digit numbers are premium rate numbers. These numbers can only be reached with a mobile phone and are mainly used for contests and sweepstakes. Saudi Arabia. The numbers starting with 700. They are mostly for competitions and winning prizes—adult entertainment ventures are considered immodest and thus illegal in Saudi Arabia.

  7. Telephone numbers in Taiwan - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Taiwan

    Taiwan mobile phone numbers always begin with 09 followed by 8 digits (e.g. 0918909875). The 0 is omitted when calling a Taiwan mobile phone number from outside Taiwan (e.g. +88 01771292198). If calling a landline within Taiwan from a local Taiwan mobile phone, the 0 of area code prefix must be included (e.g. 0 + area code + 8 digit landline ...

  8. Telephone numbers in Hong Kong - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Hong_Kong

    Telephone numbers in Hong Kong are mostly eight-digit. Fixed land line numbers start with 2 or 3, mobile (cellular) phone numbers with 5, 6, 7 or 9, pager numbers with 7 and forwarding service with 8 [citation needed]. Since the end of 1989, there have been no area codes within Hong Kong. The telephone number for emergency services – Police ...

  9. Telephone numbers in Argentina - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Argentina

    In Argentina, area codes are two, three, or four digits long (after the initial zero).Local customer numbers are six to eight digits long. The total number of digits is ten, for example, phone number (11) 1234-5678 for Buenos Aires is made up of a 2-digit area code number and an 8-digit subscriber's number, while (383) 123-4567 would be an example of a Catamarca number.

  10. Telephone number - Wikipedia

    en.wikipedia.org/wiki/Telephone_number

    A telephone number serves as an address for switching telephone calls using a system of destination code routing. [1] Telephone numbers are entered or dialed by a calling party on the originating telephone set, which transmits the sequence of digits in the process of signaling to a telephone exchange.

  11. Telephone numbers in South Africa - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_South...

    098: Machine-related services (14-digit numbers) There are still some non-automated exchanges which use longer dialing codes, mostly for "farm lines" and remote areas with operator-assisted exchanges. 09X XXX XXXX numbers are no longer in use in South Africa.