NXX definition

NXX or “Central Office Code" is the three-digit switch entity indicator that is defined by the fourth through sixth digits of a 10-digit telephone number within the NANP. Each NXX Code contains 10,000 station numbers.

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NXX means the three-digit code that appears as the first three digits of a seven-digit telephone number within a valid area code (i.e., an NXX other than a special 500, 600, 700, 800 or 900 code).

NXX. “NXX Code,” “COC,” “Central Office Code,” or “CO Code” is the three-digit switch entity indicator which is defined by the fourth, fifth and sixth digits of a 10-digit telephone number within NANP.

Examples of NXX in a sentence

• If either Party uses its NXX Code to provide Foreign Exchange (FX) service to its customers outside of the geographic area assigned to such code, that Party shall be solely responsible to transport traffic between its Foreign Exchange service customers and such code’s geographic area.

• In the event that the WSP establishes a new choke NXX, WSP must notify AT&T- 12STATE a minimum of ninety (90) Days prior to deployment of the new HVCI/Mass Calling NXX.

• A traditional ILEC may serve a single rate center with multiple switches (CLLIs and NXX codes) while WSP may serve multiple rate centers with a single switch.

• In the latter case, use of a specific NXX code will determine the rate center.

• If the called party is in a portable NXX, a query is launched to the LNP database to determine whether or not the called number is ported.

More Definitions of NXX

NXX means the three-digit code, which appears as the first three digits of a seven-digit telephone number within a valid NPA or area code.

NXX means the three-digit switch entity indicator that is defined by the “D”, “E”, and “F” digits of a 10-digit telephone number within the NANP. Each NXX contains 10,000 station numbers.

NXX means the fourth, fifth and sixth digits of a ten-digit telephone number.

NXX. “NXX Code,” or “End Office Code” means the three digit switch entity indicator (i.e., the first three digits of a seven digit telephone number).

NXX. “NXX Code”, “Central Office Code”, or “CO Code” is the 3-digit switch indicator that is defined by the D, E, and F digits of a 10-digit telephone number within the North American Numbering Plan. Each NXX Code contains 10,000 telephone numbers.

NXX means the numerical code used by the Company to indicate a specific central office within an NPA.

NXX refers to the first three digits of a telephone number, which identify the specific telephone company central office that serves that number.