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.

Switch: CHHMMIXIPS0

Remotes:

Switch Switch name Switch type
AUTRMIXIRP0  AU TRAIN  RP 
SKNDMIXIRP0  SKANDIA  RP 
SNRVMIXIRP0  SAND RIVER  RP 
TRNYMIXIRP0  TRENARY  RP 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
906-439 A Chatham MI 0685 CHATHAM TEL. CO. 342      
906-439 1 Chatham MI 0685 CHATHAM TEL. CO. 342      
906-439 2 Chatham MI 0685 CHATHAM TEL. CO. 342      
906-439 3 Chatham MI 0685 CHATHAM TEL. CO. 342      
906-439 4 Chatham MI 0685 CHATHAM TEL. CO. 342      
906-439 5 Chatham MI 0685 CHATHAM TEL. CO. 342      
906-439 6 Chatham MI 0685 CHATHAM TEL. CO. 342      
906-439 7 Chatham MI 0685 CHATHAM TEL. CO. 342      
906-439 8 Chatham MI 0685 CHATHAM TEL. CO. 342      
906-439 9 Chatham MI 0685 CHATHAM TEL. CO. 342      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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