Local Calling Guide

Area code/prefix search

Search by area code/prefix (NPA/NXX) or OCN

  • 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.

Last updated: Sat, 20 Sep 2014 21:25:14 UTC

How to use this page

Switch: MNSTMIMNDS0

Remotes:
Switch Switch name Switch type
FONTMIMNRSA FOUNTAIN 5ER
ONKMMIMNRSA ONEKAMA 5ER

See all switches at this location

NPA-NXX BLOCK Rate Centre Region OCN LATA Eff date Disc date Map
231-398 A Manistee MI 9323 AMERITECH MICHIGAN [link] 348 map
231-723 A Manistee MI 9323 AMERITECH MICHIGAN [link] 348 map



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