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: 405 [Rate centres in NPA 405] [Dial plan for NPA 405]

NXX: 551

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
405-551 A Oklahoma City OK OKCYOKCEDS0  9533 SOUTHWESTERN BELL 536      
405-551 0 Oklahoma City OK OKCYOKMTG01  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536   2011-10-17   
405-551 1 Oklahoma City OK OKCYOKMTG01  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536   2009-05-11   
405-551 2 Oklahoma City OK OKCYOKCEDS0  9533 SOUTHWESTERN BELL 536      
405-551 3 Oklahoma City OK OKCYOKMTG01  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536   2009-05-11   
405-551 4 Oklahoma City OK   145J TERRA NOVA TELECOM INC. 536   2020-05-14   
405-551 5 Oklahoma City OK OKCYOKMTG01  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536   2009-05-11   
405-551 6 Oklahoma City OK OKCYOKCEDS0  9533 SOUTHWESTERN BELL 536      
405-551 7 Oklahoma City OK OKCYOKMTG01  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536   2021-05-03   
405-551 8 Oklahoma City OK OKCZOKZCFMD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536   2009-07-14   
405-551 9 Oklahoma City OK OKCYOKCEDS0  9533 SOUTHWESTERN BELL 536      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.