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: 586 [Rate centres in NPA 586] [Dial plan for NPA 586]

NXX: 574

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
586-574 A Center Line MI WRRNMITLDS0  9323 MICHIGAN BELL TEL CO 340      
586-574 0 Center Line MI WRRNMITLDS0  9323 MICHIGAN BELL TEL CO 340      
586-574 1 Center Line MI WRRNMITLDS0  9323 MICHIGAN BELL TEL CO 340      
586-574 2 Center Line MI WRRNMITLDS0  9323 MICHIGAN BELL TEL CO 340      
586-574 3 Center Line MI WRRNMITLDS0  9323 MICHIGAN BELL TEL CO 340      
586-574 4 Center Line MI WRRNMITLDS0  9323 MICHIGAN BELL TEL CO 340      
586-574 5 Center Line MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2014-09-07   
586-574 6 Center Line MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2013-01-31   
586-574 7 Center Line MI SFLDMIWKDS2  4125 XO COMMUNICATIONS SERVICES, INC. - MI 340   2012-11-26   
586-574 8 Center Line MI SFLDMIWKDS2  4125 XO COMMUNICATIONS SERVICES, INC. - MI 340   2012-11-26   
586-574 9 Center Line MI WRRNMITLDS0  9323 MICHIGAN BELL TEL CO 340      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.