Local Calling Guide

Area code/prefix search

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

NXX: 991

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
937-991 A Dayton OH DYTNOH22X0Z  6529 T-MOBILE USA, INC. 328      
937-991 0 Dayton OH   793K TWC IP ENABLED SERVICES, LLC 328   2016-07-15   
937-991 1 Dayton OH   516C AT&T CORP. 328   2016-07-14   
937-991 2 Dayton OH   7532 TELEPORT COMMUNICATIONS AMERICA, LLC - OH 328   2016-09-09   
937-991 3 Dayton OH   4863 LEVEL 3 COMMUNICATIONS, LLC - OH 328   2016-08-12   
937-991 4 Dayton OH   6529 T-MOBILE USA, INC. 328   2016-07-09   
937-991 5 Dayton OH   6529 T-MOBILE USA, INC. 328   2016-07-09   
937-991 6 Dayton OH   6529 T-MOBILE USA, INC. 328   2016-07-09   
937-991 7 Dayton OH   6529 T-MOBILE USA, INC. 328   2016-07-09   
937-991 8 Dayton OH   6529 T-MOBILE USA, INC. 328   2016-07-09   
937-991 9 Dayton OH   6529 T-MOBILE USA, INC. 328   2016-07-09   

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

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