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: 595

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-595 A Waterloo IA CDRRIAIC2MD  593K MCC TELEPHONY LLC 635      
319-595 0 Waterloo IA CDRRIADTKMD  221F ONVOY, LLC - IA 635   2019-09-19   
319-595 1 Waterloo IA CDRRIAIC2MD  593K MCC TELEPHONY LLC 635   2018-08-05   
319-595 2 Waterloo IA CDRRIADT1MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 635   2018-12-05   
319-595 3 Waterloo IA CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2018-09-21   
319-595 4 Waterloo IA CDRRIADTKMD  221F ONVOY, LLC - IA 635   2019-09-19   
319-595 5 Waterloo IA CDRRIAAX7MD  5562 METROPCS, INC. 635   2018-08-06   
319-595 6 Waterloo IA CDRRIAAX7MD  5562 METROPCS, INC. 635   2018-08-06   
319-595 7 Waterloo IA CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2018-09-21   
319-595 8 Waterloo IA CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2018-09-21   
319-595 9 Waterloo IA CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635   2018-09-21   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.