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: AMRLTXFLDS0

Remotes:

Switch Switch name Switch type
AMRLTX02RS1  AMARILLO  5ER 
AMRLTXDIRS0  Amarillo Diamond  5ER 
AMRLTXEVDS0  AMARILLO  EXM 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
806-212 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-351 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-352 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-353 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-354 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-355 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-356 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-358 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-359 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-457 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-463 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-467 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-468 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-477 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-573 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-651 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-677 A Amarillo TX 9533 SOUTHWESTERN BELL 546      
806-881 A Amarillo TX 9533 SOUTHWESTERN BELL 546      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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