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: 501 [Rate centres in NPA 501] [Dial plan for NPA 501]

NXX: 407

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
501-407 A Little Rock AR LTRKARSWRS1  9533 SOUTHWESTERN BELL 528      
501-407 0 Little Rock AR   9533 SOUTHWESTERN BELL 528      
501-407 1 Little Rock AR   6529 T-MOBILE USA, INC. 528   2010-12-01   
501-407 2 Little Rock AR   9533 SOUTHWESTERN BELL 528      
501-407 3 Little Rock AR   9533 SOUTHWESTERN BELL 528      
501-407 4 Little Rock AR   7656 WINDSTREAM COMMUNICATIONS, INC. - AR 528   2006-05-11   
501-407 5 Little Rock AR   7656 WINDSTREAM COMMUNICATIONS, INC. - AR 528   2006-05-11   
501-407 6 Little Rock AR   6529 T-MOBILE USA, INC. 528   2010-12-01   
501-407 7 Little Rock AR   6529 T-MOBILE USA, INC. 528   2010-12-01   
501-407 8 Little Rock AR   5562 METROPCS, INC. 528   2022-01-28   
501-407 9 Little Rock AR   9533 SOUTHWESTERN BELL 528      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.