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- Central_office_code_protection abstract "In the administration of the North American Numbering Plan, central office code protection was a numbering policy intended to ensure that the same local telephone number was not assigned in both of a pair of adjacent communities on opposite sides of an area code boundary. Its primary purpose was initially to preserve seven-digit dialing of local calls across a common area code boundary in border communities.Central office code protection was once common in communities such as Ottawa-Hull or Washington, D.C. which were constructed on provincial or state boundary lines. It is declining in use as inefficient allocation of numbering resources to the growing number of competitive local exchange carriers has caused depletion of available number prefixes, often requiring ten-digit local calls or overlay plans where multiple area codes serve the same geographic location.".
- Central_office_code_protection wikiPageID "44742953".
- Central_office_code_protection wikiPageLength "8658".
- Central_office_code_protection wikiPageOutDegree "60".
- Central_office_code_protection wikiPageRevisionID "679005797".
- Central_office_code_protection wikiPageWikiLink Area_code.
- Central_office_code_protection wikiPageWikiLink Area_code_202.
- Central_office_code_protection wikiPageWikiLink Area_code_207.
- Central_office_code_protection wikiPageWikiLink Area_code_219.
- Central_office_code_protection wikiPageWikiLink Area_code_301.
- Central_office_code_protection wikiPageWikiLink Area_code_312.
- Central_office_code_protection wikiPageWikiLink Area_code_314.
- Central_office_code_protection wikiPageWikiLink Area_code_317.
- Central_office_code_protection wikiPageWikiLink Area_code_402.
- Central_office_code_protection wikiPageWikiLink Area_code_506.
- Central_office_code_protection wikiPageWikiLink Area_code_605.
- Central_office_code_protection wikiPageWikiLink Area_code_613.
- Central_office_code_protection wikiPageWikiLink Area_code_618.
- Central_office_code_protection wikiPageWikiLink Area_code_703.
- Central_office_code_protection wikiPageWikiLink Area_code_712.
- Central_office_code_protection wikiPageWikiLink Area_code_816.
- Central_office_code_protection wikiPageWikiLink Area_code_819.
- Central_office_code_protection wikiPageWikiLink Area_code_913.
- Central_office_code_protection wikiPageWikiLink Area_codes_240_and_301.
- Central_office_code_protection wikiPageWikiLink Area_codes_402_and_531.
- Central_office_code_protection wikiPageWikiLink Area_codes_571_and_703.
- Central_office_code_protection wikiPageWikiLink Area_codes_613_and_343.
- Central_office_code_protection wikiPageWikiLink Area_codes_819_and_873.
- Central_office_code_protection wikiPageWikiLink Bell_Aliant.
- Central_office_code_protection wikiPageWikiLink Calumet_City,_Illinois.
- Central_office_code_protection wikiPageWikiLink Campobello_Island.
- Central_office_code_protection wikiPageWikiLink Category:North_American_Numbering_Plan.
- Central_office_code_protection wikiPageWikiLink Chicago.
- Central_office_code_protection wikiPageWikiLink Coffeyville,_Kansas.
- Central_office_code_protection wikiPageWikiLink Competitive_local_exchange_carrier.
- Central_office_code_protection wikiPageWikiLink East_Chicago,_Indiana.
- Central_office_code_protection wikiPageWikiLink Eastern_Shore_of_Maryland.
- Central_office_code_protection wikiPageWikiLink Edmundston.
- Central_office_code_protection wikiPageWikiLink FairPoint_Communications.
- Central_office_code_protection wikiPageWikiLink Hull,_Quebec.
- Central_office_code_protection wikiPageWikiLink Indiana.
- Central_office_code_protection wikiPageWikiLink Kansas_City_metropolitan_area.
- Central_office_code_protection wikiPageWikiLink Linked_numbering_scheme.
- Central_office_code_protection wikiPageWikiLink List_of_original_NANP_area_codes.
- Central_office_code_protection wikiPageWikiLink Lloydminster.
- Central_office_code_protection wikiPageWikiLink Local_access_and_transport_area.
- Central_office_code_protection wikiPageWikiLink Lubec,_Maine.
- Central_office_code_protection wikiPageWikiLink Madawaska,_Maine.
- Central_office_code_protection wikiPageWikiLink Maryland.
- Central_office_code_protection wikiPageWikiLink New_Brunswick.
- Central_office_code_protection wikiPageWikiLink North_American_Numbering_Plan.
- Central_office_code_protection wikiPageWikiLink Number_pooling.
- Central_office_code_protection wikiPageWikiLink Ottawa.
- Central_office_code_protection wikiPageWikiLink Overlay_plan.
- Central_office_code_protection wikiPageWikiLink Seven-digit_dialing.
- Central_office_code_protection wikiPageWikiLink Sioux_City_metropolitan_area.
- Central_office_code_protection wikiPageWikiLink South_Coffeyville,_Oklahoma.
- Central_office_code_protection wikiPageWikiLink Split_plan.
- Central_office_code_protection wikiPageWikiLink St._Louis.
- Central_office_code_protection wikiPageWikiLink Telephone_exchange.
- Central_office_code_protection wikiPageWikiLink Telephone_numbering_plan.
- Central_office_code_protection wikiPageWikiLink Ten-digit_dialing.
- Central_office_code_protection wikiPageWikiLink Virginia.
- Central_office_code_protection wikiPageWikiLink Washington,_D.C..
- Central_office_code_protection wikiPageWikiLinkText "Central office code protection".
- Central_office_code_protection wikiPageWikiLinkText "central office code protection".
- Central_office_code_protection hasPhotoCollection Central_office_code_protection.
- Central_office_code_protection wikiPageUsesTemplate Template:Reflist.
- Central_office_code_protection subject Category:North_American_Numbering_Plan.
- Central_office_code_protection hypernym Policy.
- Central_office_code_protection type Organisation.
- Central_office_code_protection comment "In the administration of the North American Numbering Plan, central office code protection was a numbering policy intended to ensure that the same local telephone number was not assigned in both of a pair of adjacent communities on opposite sides of an area code boundary.".
- Central_office_code_protection label "Central office code protection".
- Central_office_code_protection wasDerivedFrom Central_office_code_protection?oldid=679005797.
- Central_office_code_protection isPrimaryTopicOf Central_office_code_protection.