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: DYTNOH22X0Y

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
513-890 A Middletown OH 6630 SPOK, INC. 328      
937-201 A Dayton OH 6630 SPOK, INC. 328      
937-282 A Dayton OH 6630 SPOK, INC. 328      
937-330 A Enon OH 6630 SPOK, INC. 328      
937-334 A Dayton OH 6630 SPOK, INC. 328      
937-359 A Dayton OH 6630 SPOK, INC. 328      
937-370 A Enon OH 6630 SPOK, INC. 328      
937-391 A Enon OH 6630 SPOK, INC. 328      
937-480 A Dayton OH 6630 SPOK, INC. 328      
937-491 A Enon OH 6630 SPOK, INC. 328      
937-628 A Dayton OH 6630 SPOK, INC. 328      
937-635 A Enon OH 6630 SPOK, INC. 328      
937-636 A Dayton OH 6630 SPOK, INC. 328      
937-940 A Dayton OH 6630 SPOK, INC. 328      
937-973 A Dayton OH 6630 SPOK, INC. 328      
937-978 A Enon OH 6630 SPOK, INC. 328      

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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