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: 918 [Rate centres in NPA 918] [Dial plan for NPA 918]

NXX: 738

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
918-738 A Ralston OK RLTNOKMARS1  9533 SOUTHWESTERN BELL 538      
918-738 1 Ralston OK   9533 SOUTHWESTERN BELL 538      
918-738 3 Ralston OK   073H TELNYX LLC 538   2019-01-10   
918-738 4 Ralston OK   9533 SOUTHWESTERN BELL 538      
918-738 5 Ralston OK   516C AT&T CORP. 538   2011-11-17   
918-738 7 Ralston OK   508J CENTURYLINK COMMUNICATIONS, LLC 538   2017-04-08   
918-738 8 Ralston OK   409F ONVOY, LLC - OK 538   2021-06-26   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.