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.


NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
432-229 A Presidio TX PRSDTXXA0MD  542      
432-291 A Langtry TX LNGTTXXA0MD  542      
432-292 A Comstock TX CMSTTXXADS0  542      
432-345 A Sanderson TX SNSNTXXA0MD  542      
432-358 A Alamito TX ALMTTXXA0MD  542      
432-364 A Calamity Creek TX CMCKTXXADS0  542      
432-371 A Terlingua TX TRLGTXXA0MD  542      
432-376 A Heath Canyon TX HECYTXXA0MD  542      
432-384 A Redford TX RDFRTXXA0MD  542      
432-395 A Six Shooter TX SXSHTXXA0MD  542      
432-424 A Lajitas TX LJTSTXXA0MD  542      
432-477 A Big Bend National Park TX BBNPTXXA0MD  542      
432-753 A Big Canyon TX CMCKTXXADS0  542      
432-836 A Sheffield TX SHFDTXXA0MD  542      

Last updated: Tue, 04 May 2021 15:04:27 UTC

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