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: 233

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
918-233 A South Chetopa OK CHTPKSBERS0  9533 SOUTHWESTERN BELL 532      
918-233 0 South Chetopa OK WCHTKSTPDS0  384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 532   2016-02-15   
918-233 1 South Chetopa OK WCHTKSTPDS0  384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 532   2018-08-31   
918-233 2 South Chetopa OK WCHTKSBRX0X  409F ONVOY, LLC - OK 532   2019-01-19   
918-233 3 South Chetopa OK WCHTKSBRX0X  409F ONVOY, LLC - OK 532   2018-08-09   
918-233 4 South Chetopa OK WCHTKSBRXVY  508J CENTURYLINK COMMUNICATIONS, LLC 532   2014-03-13   
918-233 5 South Chetopa OK WCHTKSBRX0X  409F ONVOY, LLC - OK 532   2019-01-19   
918-233 6 South Chetopa OK WCHTKSBRX0X  409F ONVOY, LLC - OK 532   2020-07-10   
918-233 7 South Chetopa OK CHTPKSBERS0  9533 SOUTHWESTERN BELL 532      
918-233 8 South Chetopa OK WCHTKSBRX0X  409F ONVOY, LLC - OK 532   2020-07-10   
918-233 9 South Chetopa OK WCHTKSTPNMD  073H TELNYX LLC 532   2019-01-21   

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.