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  2. Fictitious telephone number - Wikipedia

    en.wikipedia.org/wiki/Fictitious_telephone_number

    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.

  3. 555 (telephone number) - Wikipedia

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

    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). It has traditionally been used only for the provision of directory assistance, when dialing NPA-555-1212.

  4. Telephone numbers in Italy - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Italy

    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. The plan is organized by types of services, [1] indicated by the first digit. Geographic landline numbers start with the digit 0, while mobile ...

  5. Caller ID spoofing - Wikipedia

    en.wikipedia.org/wiki/Caller_ID_spoofing

    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.

  6. Telephone numbers in Nigeria - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Nigeria

    0, 009. 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. Local telephone numbers contain from five to seven digits, and may vary within the area code.

  7. Premium-rate telephone number - Wikipedia

    en.wikipedia.org/wiki/Premium-rate_telephone_number

    Numbers starting with 70, 30 and 40 are reserved for premium-rate services. 700, 701, 707 and 300 are "general" premium-rate services (usually charged per minute), 707 and 400 are assigned for tele-voting, mass-calls and so on (usually charged per call). Other numbers (702-706, 709, 301–309, 401-409) are reserved for future assignments.

  8. Protect yourself from internet scams - AOL Help

    help.aol.com/articles/protect-yourself-from...

    What are 800 and 888 phone number scams? If you get an email providing you a PIN number and an 800 or 888 number to call, this a scam to try and steal valuable personal info. These emails...

  9. Deepfake - Wikipedia

    en.wikipedia.org/wiki/Deepfake

    In 2019, a U.K.-based energy firm's CEO was scammed over the phone when he was ordered to transfer €220,000 into a Hungarian bank account by an individual who reportedly used audio deepfake technology to impersonate the voice of the firm's parent company's chief executive.

  10. List of random number generators - Wikipedia

    en.wikipedia.org/wiki/List_of_random_number...

    However, generally they are considerably slower (typically by a factor 2–10) than fast, non-cryptographic random number generators. These include: Stream ciphers. Popular choices are Salsa20 or ChaCha (often with the number of rounds reduced to 8 for speed), ISAAC, HC-128 and RC4. Block ciphers in counter mode.

  11. Telephone numbers in Germany - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Germany

    The area code 700 is used for personal numbering. Unlike national subscriber numbers, the numbers are assigned individually, allowing for memorable numbers. 800-xxxxxxx. The area code 800 is assigned to freephone numbers. The numbers are assigned individually, allowing for memorable numbers. 900-x-xxxxxx.