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: 319 [Rate centres in NPA 319] [Dial plan for NPA 319]

NXX: 645

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-645 A Tiffin IA TFFNIAXORS0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 635      
319-645 0 Tiffin IA   593K MCC TELEPHONY LLC 635      
319-645 1 Tiffin IA TFFNIAXORP0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 635      
319-645 2 Tiffin IA TFFNIAXORS0  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 635      
319-645 3 Tiffin IA CDRRIADTDMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 635      
319-645 4 Tiffin IA CDRRIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 635      
319-645 5 Tiffin IA MNTIIAAKDS0  544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 635      
319-645 6 Tiffin IA CDRRIADTUMD  8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635      
319-645 7 Tiffin IA CDRRIADTX2X  508J CENTURYLINK COMMUNICATIONS, LLC 635      
319-645 8 Tiffin IA CDRRIADTKMD  221F ONVOY, LLC - IA 635      
319-645 9 Tiffin IA TFFNIAXORP1  1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 635      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.