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: 937 [Rate centres in NPA 937] [Dial plan for NPA 937]

NXX: 993

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
937-993 A Dayton OH DYTNOH22X0Z  6529 T-MOBILE USA, INC. 328      
937-993 0 Dayton OH   4863 LEVEL 3 COMMUNICATIONS, LLC - OH 328   2015-12-25   
937-993 1 Dayton OH   6529 T-MOBILE USA, INC. 328   2017-04-30   
937-993 2 Dayton OH   6529 T-MOBILE USA, INC. 328   2017-04-30   
937-993 3 Dayton OH   5562 METROPCS, INC. 328   2016-01-01   
937-993 4 Dayton OH   6529 T-MOBILE USA, INC. 328   2017-04-30   
937-993 5 Dayton OH   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 328   2015-12-25   
937-993 6 Dayton OH   6529 T-MOBILE USA, INC. 328   2015-12-24   
937-993 7 Dayton OH   6529 T-MOBILE USA, INC. 328   2015-12-24   
937-993 8 Dayton OH   6529 T-MOBILE USA, INC. 328   2015-12-24   
937-993 9 Dayton OH   6529 T-MOBILE USA, INC. 328   2015-12-24   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.