• NANP Administration System - 10-Digit Dial Report
  List of locations in North America that require 10-digit dialling.
  By godsWink in Public bookmarks with dialing dialling
• International Numbering Plans
  
  International Numbering Plans provides a variety of tools in the field of telecommunication for businesses, law enforcement agenncies, governmental organisations or regular users. The services are centered around (mobile) numbering plans, billing databases, (reverse) search engines, investigative tools, and general worldwide country information regarding telecommunications, such a
  area city code codes country dialling e.164 for imei imsi international list mobile number numbering numbers phone plan plans
  By enight in Reference > Practicalities and Utilities with area codes dialing instructions world

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