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: DTRTMITEDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
313-361 A Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-894 A Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-895 A Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-895 0 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-895 1 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-895 2 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-895 3 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-895 4 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-895 5 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-895 8 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-895 9 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-896 A Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-896 0 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-896 1 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-896 2 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-896 3 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-896 4 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-896 5 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-896 9 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-897 A Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-898 A Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-898 0 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-898 2 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-898 3 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-898 6 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-898 7 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-898 8 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-898 9 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-899 A Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-899 1 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-899 3 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-899 4 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      
313-899 6 Detroit Zone 1 MI 9323 MICHIGAN BELL TEL CO 340      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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