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.

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
248-234 5 Southfield MI   340   2013-06-28   
248-237 1 Auburn Heights MI   340   2007-08-02   
248-250 6 Troy MI   340   2007-08-02   
248-270 4 Auburn Heights MI   340   2004-10-21   
248-278 6 South Lyon MI   340   2012-05-20   
248-439 A Royal Oak MI TROYMIUVPS0  340   2007-09-03   
248-439 0 Royal Oak MI   340   2007-09-03   
248-439 1 Royal Oak MI   340   2007-09-03   
248-439 2 Royal Oak MI   340   2007-09-03   
248-439 3 Royal Oak MI   340   2007-09-13   
248-439 4 Royal Oak MI   340   2007-09-03   
248-439 5 Royal Oak MI   340   2007-09-03   
248-439 6 Royal Oak MI   340   2007-09-03   
248-439 7 Royal Oak MI   340   2007-09-03   
248-439 8 Royal Oak MI   340   2007-09-03   
248-439 9 Royal Oak MI   340   2007-09-03   
248-482 7 Farmington MI   340   2017-04-15   
248-566 3 Birmingham MI   340   2007-08-02   
248-629 4 Royal Oak MI   340   2005-09-06   
248-629 5 Royal Oak MI   340   2005-09-05   
248-629 6 Royal Oak MI   340   2007-08-15   
248-632 1 Royal Oak MI   340   2003-03-08   
248-659 8 Rochester MI   340   2007-08-02   
248-773 5 Northville MI   340   2007-08-02   
248-792 4 Birmingham MI   340   2004-08-15   
248-835 1 Troy MI   340   2003-03-08   
248-917 0 Pontiac MI   340   2007-08-02   
248-941 A Rochester MI TROYMIUVPS0  340      
248-941 0 Rochester MI   340      
248-946 A Northville MI TROYMIUVPS0  340      
248-946 0 Northville MI   340      
248-978 A Pontiac MI TROYMIUVPS0  340      
248-978 0 Pontiac MI   340      
269-234 9 Battle Creek MI   348   2017-09-24   
269-248 6 Marshall MI   348   2012-05-16   
269-280 6 Olivet MI   348   2012-05-16   
269-331 6 Hastings MI   348   2012-05-16   
269-367 6 Woodland MI   348   2012-05-16   
269-386 4 Colon MI   348   2012-06-12   
269-430 6 Bellevue MI   348   2012-05-21   
269-575 A Athens MI GDRPMIBL13Z  348   2012-05-25   
269-575 2 Athens MI   348   2012-05-25   
313-270 8 Detroit Zone 4 MI   340   2007-08-02   
313-332 6 Detroit Zone 2 MI   340   2007-10-04   
313-406 6 Detroit Zone 6 MI   340   2007-08-02   
313-429 3 Detroit Zone 6 MI   340   2006-06-08   
313-429 9 Detroit Zone 6 MI   340   2007-08-15   
313-543 3 Detroit Zone 5 MI   340   2013-09-19   
313-743 5 Detroit Zone 2 MI   340   2007-08-02   
313-768 5 Detroit Zone 6 MI   340   2005-10-09   

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Last updated: Thu, 10 Sep 2020 02:15:24 UTC

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