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Gold Codes are generated daily and provided by the National Security Agency (NSA) to the White House, The Pentagon, United States Strategic Command and TACAMO. For an extra level of security, the list of codes on the card includes codes that have no meaning, and therefore the president must memorize where on the list the correct code is located.
The North American Numbering Plan (NANP) divides the territories of its members into geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits.
Telephone numbers in Cape Verde are 7 digits long (except for special 1xx codes), and must always be dialed in their entirety (a closed dialing plan). The first 3 digits of a fixed-line (non-mobile) number correspond to its geographic area. Calls within a given 2xx area, and between certain areas, are considered local calls and priced ...
This is a discussion of telephone numbers in the Kingdom of Saudi Arabia. The country's calling code is +966. In addition to a numbering plan, there are also dedicated numbers or number formats for Internet services, toll-free numbers, and public or emergency services.
There are several types of security codes and PVV (all generated from DES key in the bank in HSM modules using PAN, expiration date and service code): . The first code, 3 numbers, called CVC1 or CVV1, is encoded on track one and two of the magnetic stripe of the card and used for card present transactions, with signature (second track also contains pin verification value, PVV, but now it is ...
In 1996, area code 239 was introduced for southwest Florida and area code 352 for the areas around Gainesville and Ocala. Many new area codes were introduced in the first two decades of the 21st century, as a result of city expansion and growth of telecommunication services. [2] As of 2023, Florida is serviced with twenty-two telephone area codes:
Original NANP area codes of Florida and surrounding states. In 1947, the American Telephone and Telegraph Company (AT&T) announced the first nationwide telephone numbering plan and divided the United States and Canada into 86 numbering plan areas and assigned the original North American area codes, a unique code for each area, to speed the connection times for operator toll dialing.
Area codes 214, 469, 972, and 945 are telephone area codes in the North American Numbering Plan (NANP) for Dallas, Texas and most of the eastern portion of the Dallas–Fort Worth metroplex The area codes are assigned in an overlay complex to a single numbering plan area that was the core of one of the original area codes of 1947, area code 214.