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: 313 [Rate centres in NPA 313] [Dial plan for NPA 313]

NXX: 305

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-305 A Detroit Zone 3 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340      
313-305 0 Detroit Zone 3 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340      
313-305 1 Detroit Zone 3 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340      
313-305 2 Detroit Zone 3 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2005-11-07   
313-305 3 Detroit Zone 3 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2006-01-10   
313-305 4 Detroit Zone 3 MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2008-04-03   
313-305 5 Detroit Zone 3 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340      
313-305 6 Detroit Zone 3 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340      
313-305 7 Detroit Zone 3 MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2008-11-03   
313-305 8 Detroit Zone 3 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340      
313-305 9 Detroit Zone 3 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.