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英文字典中文字典相关资料:


  • North American Numbering Plan Administrator
    North American Numbering Plan Administrator This site provides information about the North American Numbering Plan (NANP) The NANP includes the U S and its territories, Canada, and some Caribbean countries NANPA is the authoritative source for all number assignments in the U S and its territories More Information
  • secure. nanpa. com
    Search for area codes in the North American Numbering Plan (NANP) using this tool to access comprehensive information and reports
  • reports. nanpa. com
    200 0 500 0
  • Area Code Search | NANPA
    Area Code Search Home Numbering NRUF NPA Relief Reports Resources Services
  • reports. nanpa. com
    File Date,11 09 2026 NPA_ID,type_of_code,ASSIGNABLE,EXPLANATION,RESERVED,ASSIGNED,ASSIGNMENT_DT,USE,LOCATION,COUNTRY,IN_SERVICE,IN_SERVICE_DT,STATUS,PLANNING_LETTERS
  • Search for Area Code | NAS
    Search for Area Code Area Code
  • NPA Reports | NANPA
    NPA ReportsGeographic Area CodesList of in-service geographic area codes Non-Geographic Area CodesList of in-service non-geographic area codes and associated service
  • Central Office Code Assignment Records | NANPA
    Central Office Code Assignment RecordsFrom this page, you may download central office code assignments for the US and its territories by clicking on the appropriate link in the table below Clicking on a link will cause a compressed (zipped) file to be downloaded to your computer The data is sorted by State, and then by NPA-NXX These files require the use of a ZIP decompression utility on
  • Numbering | NANPA
    Numbering Landing page Home Numbering NRUF NPA Relief Reports Resources Services
  • 5XX-NXX Codes | NANPA
    5XX-NXX Codes5XX-NXX codes are to be used for applications which are non-geographic in nature and are not assigned to rate centers, may or may not traverse the PSTN, but do require an E 164 addressing scheme The use of this NANP numbering resource is to communicate with both fixed and mobile devices, some of which may be unattended





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