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: SFLDMIMKNMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
248-220 8 Birmingham MI 460K FIRST COMMUNICATIONS, LLC 340   2008-11-02   
248-228 1 Southfield MI 460K FIRST COMMUNICATIONS, LLC 340   2008-07-11   
248-237 2 Auburn Heights MI 460K FIRST COMMUNICATIONS, LLC 340   2008-11-07   
248-255 0 Walled Lake MI 460K FIRST COMMUNICATIONS, LLC 340   2008-07-12   
248-257 7 Drayton Plains MI 460K FIRST COMMUNICATIONS, LLC 340   2008-07-18   
248-406 7 West Bloomfield MI 460K FIRST COMMUNICATIONS, LLC 340   2008-07-25   
248-418 6 Pontiac MI 460K FIRST COMMUNICATIONS, LLC 340   2008-09-05   
248-450 2 Southfield MI 460K FIRST COMMUNICATIONS, LLC 340   2015-08-01   
248-528 7 Troy MI 460K FIRST COMMUNICATIONS, LLC 340   2008-12-04   
248-558 1 Clarkston MI 460K FIRST COMMUNICATIONS, LLC 340   2012-01-13   
248-586 4 Royal Oak MI 460K FIRST COMMUNICATIONS, LLC 340   2008-09-21   
248-667 0 South Lyon MI 460K FIRST COMMUNICATIONS, LLC 340   2009-05-28   
248-679 0 Northville MI 460K FIRST COMMUNICATIONS, LLC 340   2008-11-02   
248-690 0 Lake Orion MI 460K FIRST COMMUNICATIONS, LLC 340   2008-06-28   
248-716 2 Commerce MI 460K FIRST COMMUNICATIONS, LLC 340   2010-05-22   
248-805 A Rochester MI 460K FIRST COMMUNICATIONS, LLC 340      
248-805 0 Rochester MI 460K FIRST COMMUNICATIONS, LLC 340   2008-04-01   
248-876 8 Farmington MI 460K FIRST COMMUNICATIONS, LLC 340   2009-07-31   
313-202 2 Detroit Zone 1 MI 460K FIRST COMMUNICATIONS, LLC 340   2008-08-03   
313-294 7 Detroit Zone 6 MI 460K FIRST COMMUNICATIONS, LLC 340   2008-07-18   
313-423 9 Detroit Zone 2 MI 460K FIRST COMMUNICATIONS, LLC 340   2008-09-21   
313-564 6 Detroit Zone 3 MI 460K FIRST COMMUNICATIONS, LLC 340   2008-09-05   
313-653 7 Detroit Zone 4 MI 460K FIRST COMMUNICATIONS, LLC 340   2008-07-10   
313-693 1 Detroit Zone 5 MI 460K FIRST COMMUNICATIONS, LLC 340   2008-07-14   
313-818 2 Detroit Zone 1 MI 460K FIRST COMMUNICATIONS, LLC 340   2015-06-12   
313-818 5 Detroit Zone 1 MI 460K FIRST COMMUNICATIONS, LLC 340   2015-06-12   
517-579 1 Howell MI 460K FIRST COMMUNICATIONS, LLC 340   2008-07-27   
586-210 A New Baltimore MI 460K FIRST COMMUNICATIONS, LLC 340      
586-210 1 New Baltimore MI 460K FIRST COMMUNICATIONS, LLC 340   2013-07-13   
586-218 1 Roseville MI 460K FIRST COMMUNICATIONS, LLC 340   2008-07-12   
586-275 3 Warren MI 460K FIRST COMMUNICATIONS, LLC 340   2008-10-17   
586-329 2 Mount Clemens MI 460K FIRST COMMUNICATIONS, LLC 340   2008-07-17   
586-336 8 Romeo MI 460K FIRST COMMUNICATIONS, LLC 340   2009-05-28   
586-360 2 Roseville MI 460K FIRST COMMUNICATIONS, LLC 340   2006-01-14   
586-467 3 Center Line MI 460K FIRST COMMUNICATIONS, LLC 340   2009-05-28   
586-685 6 Utica MI 460K FIRST COMMUNICATIONS, LLC 340   2009-05-28   
734-229 8 Romulus MI 460K FIRST COMMUNICATIONS, LLC 340   2010-08-06   
734-252 7 Belleville MI 460K FIRST COMMUNICATIONS, LLC 340   2010-06-25   
734-309 4 Wyandotte MI 460K FIRST COMMUNICATIONS, LLC 340   2011-05-30   
734-335 5 Plymouth MI 460K FIRST COMMUNICATIONS, LLC 340   2010-08-26   
734-405 3 Wayne MI 460K FIRST COMMUNICATIONS, LLC 340   2009-01-07   
734-452 8 Livonia MI 460K FIRST COMMUNICATIONS, LLC 340   2008-07-27   
734-619 2 Ann Arbor MI 460K FIRST COMMUNICATIONS, LLC 340   2008-11-22   
734-695 7 Ypsilanti MI 460K FIRST COMMUNICATIONS, LLC 340   2008-12-26   
734-726 1 Dexter MI 460K FIRST COMMUNICATIONS, LLC 340   2009-12-28   
734-731 8 Monroe MI 460K FIRST COMMUNICATIONS, LLC 340   2010-01-11   
734-818 2 Trenton MI 460K FIRST COMMUNICATIONS, LLC 340   2012-03-22   
810-294 6 Port Huron MI 460K FIRST COMMUNICATIONS, LLC 340   2011-08-06   
810-335 6 Algonac MI 460K FIRST COMMUNICATIONS, LLC 340   2016-05-05   
810-355 9 Brighton MI 460K FIRST COMMUNICATIONS, LLC 340   2010-04-09   
810-410 0 Flint MI 460K FIRST COMMUNICATIONS, LLC 340   2008-09-19   
810-487 6 Flushing MI 460K FIRST COMMUNICATIONS, LLC 340   2010-04-23   
810-584 2 Grand Blanc MI 460K FIRST COMMUNICATIONS, LLC 340   2009-05-28   
810-714 6 Fenton MI 460K FIRST COMMUNICATIONS, LLC 340   2016-02-21   
947-269 A Rochester MI 460K FIRST COMMUNICATIONS, LLC 340      
947-269 0 Rochester MI 460K FIRST COMMUNICATIONS, LLC 340   2023-12-08   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.