Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 918 [Rate centres in NPA 918] [Dial plan for NPA 918]

NXX: 789

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
918-789 A Chelsea OK CHLSOKMARS1  9533 SOUTHWESTERN BELL 538      
918-789 0 Chelsea OK   119F BANDWIDTH.COM CLEC, LLC - OK 538   2008-12-01   
918-789 1 Chelsea OK   9533 SOUTHWESTERN BELL 538      
918-789 2 Chelsea OK   9533 SOUTHWESTERN BELL 538      
918-789 3 Chelsea OK   9533 SOUTHWESTERN BELL 538      
918-789 4 Chelsea OK   409F ONVOY, LLC - OK 538   2016-09-29   
918-789 5 Chelsea OK   145J TERRA NOVA TELECOM INC. 538   2020-12-15   
918-789 6 Chelsea OK   516C AT&T CORP. 538   2010-11-28   
918-789 7 Chelsea OK   945H NORTHEAST RURAL SERVICES, INC. - OK 538   2009-10-26   
918-789 8 Chelsea OK   5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538   2014-06-01   
918-789 9 Chelsea OK   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 538   2016-03-05   

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

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