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: DTRTMIPEDS0

1 2 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
313-267 A Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-365 A Detroit Zone 3 MI 9323 AMERITECH MICHIGAN 340      
313-365 1 Detroit Zone 3 MI 9323 AMERITECH MICHIGAN 340      
313-365 2 Detroit Zone 3 MI 9323 AMERITECH MICHIGAN 340      
313-365 4 Detroit Zone 3 MI 9323 AMERITECH MICHIGAN 340      
313-365 5 Detroit Zone 3 MI 9323 AMERITECH MICHIGAN 340      
313-365 6 Detroit Zone 3 MI 9323 AMERITECH MICHIGAN 340      
313-365 8 Detroit Zone 3 MI 9323 AMERITECH MICHIGAN 340      
313-365 9 Detroit Zone 3 MI 9323 AMERITECH MICHIGAN 340      
313-571 A Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-571 0 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-571 1 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-571 2 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-571 7 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-571 9 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-579 A Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-579 0 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-579 1 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-579 2 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-579 3 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-579 4 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-579 5 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-579 6 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-579 7 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-579 9 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-921 A Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-921 0 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-921 1 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-921 2 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-921 3 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-921 4 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-921 7 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-921 8 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-921 9 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-922 A Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-922 0 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-922 1 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-922 3 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-922 6 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-922 8 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-922 9 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-923 A Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-923 0 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-923 1 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-923 8 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-923 9 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-924 A Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-924 0 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-924 6 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      
313-924 9 Detroit Zone 2 MI 9323 AMERITECH MICHIGAN 340      

1 2 >>

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.