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What availability information can be determined from the area code and prefix?

April 26, 2017area code prefix

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What availability information can be determined from the area code and prefix?

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The area code and prefix, also called the NPA/NXX, indicate the telephone company Central Office (CO) that serve the customer. From this we can determine which, if any, of Concentric’s DSL circuit providers have DSL equipment in the CO serving the customer’s location.