Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: DLLSTXRNDS0

Remotes:

Switch Switch name Switch type
RCSNTXBZRS0  RICHARDSON  5ER 

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
972-301 9 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-344 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-362 3 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-437 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-437 0 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-437 1 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-437 2 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-437 3 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-437 4 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-437 5 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-437 6 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-437 7 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-437 9 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-470 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-470 0 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-470 1 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-470 2 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-470 3 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-470 4 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-470 5 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-470 7 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-470 8 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-470 9 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-479 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-479 0 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-479 1 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-479 2 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-479 3 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-479 4 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-479 6 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-479 7 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-479 8 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-479 9 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-480 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-480 0 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-480 5 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-480 8 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-480 9 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-497 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-497 0 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-497 1 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-497 5 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-497 6 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-497 7 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-497 8 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-497 9 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-498 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-498 0 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-498 2 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-498 3 Dallas TX 9533 SOUTHWESTERN BELL 552      

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Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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