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: 213

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-213 A Traverse City MI TRCYMIMNDS1  9323 AMERITECH MICHIGAN 348      
231-213 0 Traverse City MI   9323 AMERITECH MICHIGAN 348   2015-04-25   
231-213 1 Traverse City MI   9323 AMERITECH MICHIGAN 348   2015-04-25   
231-213 2 Traverse City MI   9323 AMERITECH MICHIGAN 348   2015-04-25   
231-213 3 Traverse City MI   9323 AMERITECH MICHIGAN 348   2015-04-25   
231-213 4 Traverse City MI   9323 AMERITECH MICHIGAN 348   2015-04-25   
231-213 5 Traverse City MI   9323 AMERITECH MICHIGAN 348   2015-04-25   
231-213 6 Traverse City MI   9323 AMERITECH MICHIGAN 348   2015-04-25   
231-213 7 Traverse City MI   9323 AMERITECH MICHIGAN 348   2015-04-25   
231-213 8 Traverse City MI   9323 AMERITECH MICHIGAN 348   2015-04-25   
231-213 9 Traverse City MI   9323 AMERITECH MICHIGAN 348   2015-04-25   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.