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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.
As such, a typical telephone number in Metro Manila and Rizal would look like this: Within Metro Manila, Rizal, and cities of Bacoor and San Pedro: 8123-4567. Outside Metro Manila, Rizal, and cities of Bacoor and San Pedro: 02-8123-4567. Overseas calls: +63-2-8123-4567. Since October 6, 2019, all telephone numbers with the area code 2 were ...
Lavarand, also known as the Wall of Entropy, was a hardware random number generator designed by Silicon Graphics that worked by taking pictures of the patterns made by the floating material in lava lamps, extracting random data from the pictures, and using the result to seed a pseudorandom number generator. [1]
Text phone – 0800 81 12; Non-emergency police – 0900 88 44 [a] or 0343 578 844; [66] Non-emergency police (text phone) – 0900 18 44; Suicide prevention – 113; Animal emergency – 144; Child abuse – 0900 123 12 30; [a] Anti-bullying hotline – 0800 90 50 . North Macedonia. 192 or 112 [b] 194 or 112 [b]
Telephone numbers in the Americas. The prefixes in the Americas start with one of 1,2,5. All countries in the Americas use codes that start with "5", with the exception of the countries of the North American Numbering Plan, such as Canada and the United States, which use country code 1, and Greenland and Aruba with country codes starting with ...
Telephone numbers in Hong Kong India: 9 +91: 00: Telephone numbers in India Indonesia: 6 +62: 00x, 01xxx (VoIP) Open: Telephone numbers in Indonesia Iran: 9 +98: 00: Telephone numbers in Iran Iraq: 9 +964: 00: Telephone numbers in Iraq Israel: 9 +972: 00, 01x: Telephone numbers in Israel Japan: 8 +81: 010: Telephone numbers in Japan Jordan: 9 ...
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.
Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.