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: 755

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
870-755 A Parkin AR PRKNARMARS1  9533 SOUTHWESTERN BELL 528      
870-755 0 Parkin AR   095A E. RITTER COMMS DBA RITTER COMMUNICATIONS, INC. AR 528   2004-01-17   
870-755 1 Parkin AR   9533 SOUTHWESTERN BELL 528      
870-755 2 Parkin AR   9533 SOUTHWESTERN BELL 528      
870-755 3 Parkin AR   516C AT&T CORP. 528   2011-04-15   
870-755 4 Parkin AR   073H TELNYX LLC 528   2018-11-26   
870-755 5 Parkin AR   9533 SOUTHWESTERN BELL 528      
870-755 6 Parkin AR   5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528   2015-01-20   
870-755 7 Parkin AR   9533 SOUTHWESTERN BELL 528      
870-755 8 Parkin AR   348F ONVOY, LLC - AR 528   2020-03-13   
870-755 9 Parkin AR   515J IP HORIZON LLC 528   2024-03-28   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.