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: 231 [Rate centres in NPA 231] [Dial plan for NPA 231]

NXX: 487

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-487 A Petoskey MI PTSKMIMNDS0  9323 MICHIGAN BELL TEL CO 348      
231-487 0 Petoskey MI PTSKMIMNDS0  9323 MICHIGAN BELL TEL CO 348      
231-487 1 Petoskey MI PTSKMIMNDS0  9323 MICHIGAN BELL TEL CO 348      
231-487 2 Petoskey MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2012-12-16   
231-487 3 Petoskey MI PTSKMIMNDS0  9323 MICHIGAN BELL TEL CO 348      
231-487 4 Petoskey MI PTSKMIMNDS0  9323 MICHIGAN BELL TEL CO 348      
231-487 5 Petoskey MI PTSKMIMNDS0  9323 MICHIGAN BELL TEL CO 348      
231-487 6 Petoskey MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2013-01-05   
231-487 7 Petoskey MI PTSKMIMNDS0  9323 MICHIGAN BELL TEL CO 348      
231-487 8 Petoskey MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2013-06-25   
231-487 9 Petoskey MI PTSKMIMNDS0  9323 MICHIGAN BELL TEL CO 348      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.