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.
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
248-206 1 Royal Oak MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2014-05-01   
248-218 6 Rochester MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-234 9 Southfield MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2014-03-15   
248-243 3 Auburn Heights MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-256 8 Oxford MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-264 9 South Lyon MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-283 8 Birmingham MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-305 1 Northville MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-313 5 Walled Lake MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-385 0 Birmingham MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2014-03-06   
248-387 6 Commerce MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-394 3 Clarkston MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-414 1 Royal Oak MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2010-03-15   
248-419 3 West Bloomfield MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-448 9 Southfield MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2017-07-27   
248-461 8 Drayton Plains MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-556 7 Royal Oak MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-579 1 Farmington MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-598 6 Auburn Heights MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2014-09-26   
248-602 4 Troy MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2012-09-28   
248-630 7 Pontiac MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-687 7 Troy MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-690 4 Lake Orion MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
248-731 1 Birmingham MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2011-01-29   
248-781 9 Troy MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2016-11-07   
248-847 4 West Bloomfield MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2016-11-07   
248-861 0 Clarkston MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2017-07-27   
248-878 2 Troy MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2011-10-28   
248-912 0 Northville MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340      
248-940 0 Birmingham MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2017-06-23   
248-951 0 Royal Oak MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2016-11-07   
248-951 1 Royal Oak MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2017-07-27   
248-963 9 Rochester MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2017-07-27   
248-972 2 Pontiac MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2014-04-16   
313-324 8 Detroit Zone 1 MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
313-359 8 Detroit Zone 6 MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
313-365 3 Detroit Zone 3 MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
313-379 0 Detroit Zone 1 MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2017-07-27   
313-651 8 Detroit Zone 4 MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
313-676 4 Detroit Zone 5 MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
313-821 7 Detroit Zone 2 MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
313-936 1 Detroit Zone 2 MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2015-04-04   
517-518 3 Howell MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
586-248 9 Richmond MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2011-02-17   
586-251 1 Utica MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2016-11-07   
586-267 9 Mount Clemens MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2016-11-07   
586-276 9 Warren MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
586-350 2 Roseville MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
586-372 3 Romeo MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
586-459 9 Center Line MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2015-04-13   
586-571 1 Center Line MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2016-11-07   
586-619 3 Center Line MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
586-648 5 New Baltimore MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2010-10-21   
586-649 6 Mount Clemens MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
586-676 9 Mount Clemens MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2017-07-27   
586-843 1 Utica MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2014-09-21   
586-884 5 Utica MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
734-217 3 Ypsilanti MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
734-225 9 Wyandotte MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
734-233 6 Plymouth MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
734-237 5 Livonia MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
734-239 8 Ann Arbor MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
734-391 3 Belleville MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2010-11-14   
734-398 4 Wayne MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
734-413 2 Romulus MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
810-207 4 Hartland MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
810-250 5 Flint MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
810-354 0 Fenton MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
810-355 7 Brighton MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
810-479 8 Port Huron MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
810-637 2 St Clair MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2010-07-21   
947-201 8 Auburn Heights MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2017-07-27   
947-414 8 Pontiac MI 9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2017-07-27   

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

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