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: LNNGMIMNDS0

Remotes:

Switch Switch name Switch type
DNSVMIMNRSA  DANSVILLE  RSC 
LNNGMISORS0  LANSING SOUTH  RSC 
MLKNMIMNRSA  MULLIKEN  RSC 
NVVLMIMNRSA  NASHVILLE-VERMONTVILLE  RSC 
PTLDMIPTRSA  PORTLAND  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
517-316 A Lansing MI 9323 MICHIGAN BELL TEL CO 346      
517-325 A Lansing MI 9323 MICHIGAN BELL TEL CO 346      
517-334 A Lansing MI 9323 MICHIGAN BELL TEL CO 346      
517-346 A Lansing MI 9323 MICHIGAN BELL TEL CO 346      
517-367 A Lansing MI 9323 MICHIGAN BELL TEL CO 346      
517-371 A Lansing MI 9323 MICHIGAN BELL TEL CO 346      
517-372 A Lansing MI 9323 MICHIGAN BELL TEL CO 346      
517-763 A Lansing MI 9323 MICHIGAN BELL TEL CO 346      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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