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In North America, the area served by the North American Numbering Plan (NANP) system of area codes, fictitious telephone numbers are usually of the form (XXX) 555-xxxx. The use of 555 numbers in fiction, however, led a desire to assign some of them in the real world, and some of them are no longer suitable for use in fiction.
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.
International number or range Usage of international number or range Additional network information +996 312 XXXXXX: Geographic; Bishkek +996 312 2XXXXX: Geographic; Bishkek: KyrgyzTelecom +996 312 4XXXXX: Geographic; Bishkek: KyrgyzTelecom +996 312 50XXXX: Geographic; Bishkek: KyrgyzTelecom +996 312 51XXXX: Geographic; Bishkek: KyrgyzTelecom ...
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 ...
Instead, callers would use the Indonesian country code +62, followed by the area code, without the "0". Domestic phone numbers in large cities have 8 digits, and in other areas 7 digits. Mobile phone numbers have a total of 10 to 12 digits for postpaid depending on the operator, whereas prepaid services get 11 to 13 digits determined by the ...
Calling formats. To call in Ivory Coast, the following format is used: yy xx xx xx xx - calls within Ivory Coast. +225 27 xx xx xx xx calls from outside Ivory Coast to a landline. +225 01 xx xx xx xx / +225 05 xx xx xx xx / +225 07 xx xx xx xx / +225 25 xx xx xx xx calls from outside Ivory Coast to a mobile number.
The Uzbek telephone numbering plan describes the allocation of telephone numbers in Uzbekistan. Format [ edit ] Phone numbers typically have nine digits (except for emergency services and certain short codes) and are composed of a two-digit area code followed by subscriber number.
A pseudorandom number generator (PRNG), also known as a deterministic random bit generator (DRBG), is an algorithm for generating a sequence of numbers whose properties approximate the properties of sequences of random numbers.
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.
Random number generation is a process by which, often by means of a random number generator (RNG), a sequence of numbers or symbols that cannot be reasonably predicted better than by random chance is generated. This means that the particular outcome sequence will contain some patterns detectable in hindsight but impossible to foresee.