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: SFLDMI48DS0

Remotes:

Switch Switch name Switch type
RSVLMIMNRS1    DRM 
RYLOMIMNRS1    RS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
248-200 A Southfield MI 1200 TALK AMERICA INC. - MI 340      
248-220 A Birmingham MI 1200 TALK AMERICA INC. - MI 340      
248-254 A West Bloomfield MI 1200 TALK AMERICA INC. - MI 340      
313-458 A Detroit Zone 2 MI 1200 TALK AMERICA INC. - MI 340      
810-391 A Flint MI 1200 TALK AMERICA INC. - MI 340      

Last updated: Sat, 09 Mar 2019 02:16:03 UTC

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