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: EKCYOKMARS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
580-225 A Elk City OK 9533 SOUTHWESTERN BELL 536      
580-225 0 Elk City OK 9533 SOUTHWESTERN BELL 536      
580-225 1 Elk City OK 9533 SOUTHWESTERN BELL 536      
580-225 2 Elk City OK 9533 SOUTHWESTERN BELL 536      
580-225 3 Elk City OK 9533 SOUTHWESTERN BELL 536      
580-225 4 Elk City OK 9533 SOUTHWESTERN BELL 536      
580-225 5 Elk City OK 9533 SOUTHWESTERN BELL 536      
580-225 6 Elk City OK 9533 SOUTHWESTERN BELL 536      
580-225 8 Elk City OK 9533 SOUTHWESTERN BELL 536      
580-243 A Elk City OK 9533 SOUTHWESTERN BELL 536      
580-243 1 Elk City OK 9533 SOUTHWESTERN BELL 536      
580-243 6 Elk City OK 9533 SOUTHWESTERN BELL 536      
580-243 7 Elk City OK 9533 SOUTHWESTERN BELL 536      
580-303 A Elk City OK 9533 SOUTHWESTERN BELL 536      
580-303 9 Elk City OK 9533 SOUTHWESTERN BELL 536      
580-821 A Elk City OK 9533 SOUTHWESTERN BELL 536      
580-821 3 Elk City OK 9533 SOUTHWESTERN BELL 536      
580-821 5 Elk City OK 9533 SOUTHWESTERN BELL 536      
580-821 8 Elk City OK 9533 SOUTHWESTERN BELL 536      

Last updated: Sat, 02 May 2026 12:20:53 UTC

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