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: SMFRTXSFRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
325-773 A Stamford TX 9533 SOUTHWESTERN BELL 550      
325-773 1 Stamford TX 9533 SOUTHWESTERN BELL 550      
325-773 2 Stamford TX 9533 SOUTHWESTERN BELL 550      
325-773 3 Stamford TX 9533 SOUTHWESTERN BELL 550      
325-773 4 Stamford TX 9533 SOUTHWESTERN BELL 550      
325-773 5 Stamford TX 9533 SOUTHWESTERN BELL 550      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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