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.

NPA: 586 [Rate centres in NPA 586] [Dial plan for NPA 586]

NXX: 244

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
586-244 A New Haven MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
586-244 0 New Haven MI SFLDMIDC0MD  4632 TELNET WORLDWIDE, INC. 340   2008-09-05   
586-244 2 New Haven MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2009-06-08   
586-244 3 New Haven MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2009-06-08   
586-244 4 New Haven MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2011-04-10   
586-244 5 New Haven MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2007-12-11   
586-244 6 New Haven MI   279B CLEAR RATE COMMUNICATIONS, INC. - MI 340   2009-11-14   
586-244 7 New Haven MI LIVNMIUX3MD  5562 METROPCS, INC. 340   2012-01-07   
586-244 8 New Haven MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2009-03-07   
586-244 9 New Haven MI LIVNMIUX3MD  5562 METROPCS, INC. 340   2010-01-23   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.