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3.2.3 Programming Area Codes (Area Code Reference
Up to 15 different area codes can be programmed for any 10-digit or long distance calling requirements and will be referenced as area code reference number 01
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Area Codes and Numbering
A new area code is added to a geographic area when there are no more three-digit prefixes available in the existing area code. Area codes are added in the form
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Area Code Listing, by Number
Area Code Listing, by Number ; 281, TX, -6, Texas: Houston Metro (split 713; overlay 832, 346) ; 283, OH, -5, SW Ohio: Cincinnati (cancelled: overlaid on 513).
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