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: EDBGTXEBDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
956-287 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-289 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-292 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-316 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-318 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-380 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-381 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-383 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-384 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-385 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-386 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-387 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-388 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-393 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-587 A Edinburg TX 9533 SOUTHWESTERN BELL 568      
956-665 A Edinburg TX 9533 SOUTHWESTERN BELL 568      

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

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