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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. 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 ...

  6. Telephone numbers in the Netherlands - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_the...

    Geographical telephone numbers. Since the reorganization of the telephone system in 1995, Dutch geographical numbers consist of 9 digits. The numbering plan implements a system of area codes. An area code consists of two or three digits. The larger cities and areas have two digits with a subscriber number of seven digits, permitting more local ...

  7. Telephone numbers in Costa Rica - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Costa...

    Since March 20, 2008, a renewed numbering system added the prefix 2 for all landlines and 8 for all mobile phone numbers. This system was implemented in order to face the introduction of 1.5 million 3G W-CDMA customers in Q1 2009. The transition to 8-digit numbers was heavily publicized in Costa Rican media. However, the change caused ...

  8. 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.

  9. Telephone numbers in Norway - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Norway

    Telephone numbers in Norway. Telephone numbers in Norway have the country code "+47" and up to the first 2 digits of the phone number will indicate its geographic area. Emergency services are 3 digits long and start with the number "1". Mobile numbers vary in length, either 8 digits or 12 digits.

  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 Denmark - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Denmark

    62, 64, 65, 66. Today (since 1989) the same telephone number is dialed in Denmark, regardless of where you call from, but the dialling information is still in principle at the forefront of the number. Numbers beginning with 20-31 are preferably mobile numbers, those beginning with 70 and 72-79 are preferably landline numbers, and so on.