LERG/LCADS

The LERG/LCADS Routing Guides are key to finding the best and cheapest routes for service providers such as wireless, mini-telecoms and wholesale providers such as calling card providers

The Local Calling Area Data Source (LCADS) is a database containing calling area information inside the United States and Canada. LCADS is the premeir tool for mapping NPA NXXs to geographical locations and distinct local billing zones

The Local Exchange Routing Guide (LERG) contains the following information:

More Information on LNP (Local Number Portability): In 1996, the US Congress mandated a change in local telephone service that allows any carrier to enter a local market. The new regulation provides for Local Number Portability (LNP), which means that when a consumer's phone service is moved from one service provider to another, the telephone number (TN) does not change.

  • Operating Company Numbers
  • Company Names
  • Routing Contacts
  • Country Code Assignments
  • NPA Information
  • LATA Codes By Region
  • Destination Codes
  • Switching Entity Record detail
  • Rate Center details
  • Switch Homing Arrangements
  • Operator Access Tandem Codes (ATCs)
  • Location Routing Numbers (LRNs)
LRN/NPAC
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