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: LNPKMIATDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
313-294 A Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-294 0 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-294 1 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-294 2 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-294 3 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-294 4 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-294 6 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-294 8 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-294 9 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-381 A Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-382 A Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-383 A Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-386 A Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-388 A Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-389 A Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-389 0 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-389 1 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-389 2 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-389 3 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-389 4 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-389 5 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-389 7 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-389 8 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-389 9 Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      
313-928 A Detroit Zone 6 MI 9323 AMERITECH MICHIGAN 340      

Last updated: Tue, 04 May 2021 15:04:27 UTC

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