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.

Last updated: Wed, 22 Apr 2015 09:54:48 UTC

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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