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.

OCN: 6266 UNITED STATES CELLULAR - IA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
319-361 7 Cedar Rapids IA   635      
319-361 8 Cedar Rapids IA   635      
319-361 9 Cedar Rapids IA   635      
319-404 A Waterloo IA CDRRIATS0MD  635      
319-404 0 Waterloo IA CDRRIATS0MD  635      
319-404 1 Waterloo IA CDRRIATS0MD  635      
319-404 2 Waterloo IA CDRRIATS0MD  635      
319-404 3 Waterloo IA CDRRIATS0MD  635      
319-404 4 Waterloo IA CDRRIATS0MD  635      
319-404 5 Waterloo IA CDRRIATS0MD  635      
319-404 6 Waterloo IA CDRRIATS0MD  635   2011-10-29   
319-404 7 Waterloo IA CDRRIATS0MD  635      
319-404 8 Waterloo IA CDRRIATS0MD  635      
319-404 9 Waterloo IA CDRRIATS0MD  635      
319-407 A Waverly IA CDRRIATS0MD  635      
319-407 0 Waverly IA CDRRIATS0MD  635   2022-02-14   
319-407 4 Waverly IA   635   2025-01-12   
319-407 5 Waverly IA   635   2026-01-30   
319-407 6 Waverly IA   635   2026-01-30   
319-407 7 Waverly IA   635   2026-01-30   
319-415 A Waterloo IA CDRRIATS0MD  635      
319-415 0 Waterloo IA   635      
319-415 1 Waterloo IA   635      
319-415 2 Waterloo IA   635      
319-415 3 Waterloo IA   635      
319-415 4 Waterloo IA   635      
319-415 5 Waterloo IA   635      
319-415 6 Waterloo IA   635      
319-415 7 Waterloo IA   635      
319-415 8 Waterloo IA   635      
319-415 9 Waterloo IA   635      
319-422 0 Parkersburg IA CDRRIATSCM0  635   2023-06-23   
319-423 1 Cedar Rapids IA CDRRIATS0MD  635   2010-08-06   
319-428 A Burlington IA DUBQIAUS1MD  634   2024-02-09   
319-428 0 Burlington IA DUBQIAUS1MD  634   2024-02-09   
319-428 2 Burlington IA DUBQIAUS1MD  634   2024-10-12   
319-428 3 Burlington IA DUBQIAUS1MD  634   2024-10-12   
319-428 4 Burlington IA DUBQIAUS1MD  634   2024-10-12   
319-428 5 Burlington IA DUBQIAUS1MD  634   2024-10-12   
319-428 6 Burlington IA DUBQIAUS1MD  634   2024-10-12   
319-428 7 Burlington IA DUBQIAUS1MD  634   2025-01-23   
319-429 A Waterloo IA CDRRIATS0MD  635      
319-429 0 Waterloo IA CDRRIATS0MD  635   2007-07-29   
319-429 1 Waterloo IA CDRRIATS0MD  635   2007-07-29   
319-429 6 Waterloo IA CDRRIATS0MD  635   2008-05-31   
319-430 A Iowa City IA CDRRIATS0MD  635      
319-430 0 Iowa City IA   635      
319-430 1 Iowa City IA   635      
319-430 2 Iowa City IA   635      
319-430 3 Iowa City IA   635      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 >>

Last updated: Sat, 02 May 2026 12:20:53 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.