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: 870 [Rate centres in NPA 870] [Dial plan for NPA 870]

NXX: 400

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
870-400 A West Memphis AR WMMPARMADS0  9533 SOUTHWESTERN BELL 528      
870-400 0 West Memphis AR WMMPARMADS0  9533 SOUTHWESTERN BELL 528      
870-400 2 West Memphis AR WMMPARMADS0  9533 SOUTHWESTERN BELL 528      
870-400 3 West Memphis AR WMMPARMADS0  9533 SOUTHWESTERN BELL 528      
870-400 4 West Memphis AR WMMPARMADS0  9533 SOUTHWESTERN BELL 528      
870-400 7 West Memphis AR LTRKARZOAMD  6805 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 528   2011-11-20   
870-400 8 West Memphis AR LTRKARFRXJZ  318J COMCAST IP PHONE, LLC 528   2015-08-12   
870-400 9 West Memphis AR LTRKARZOAMD  6805 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 528   2011-12-08   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.