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

NXX: 742

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
405-742 A Stillwater OK STWROKMADS0  9533 SOUTHWESTERN BELL 536      
405-742 0 Stillwater OK   9533 SOUTHWESTERN BELL 536      
405-742 1 Stillwater OK   9533 SOUTHWESTERN BELL 536      
405-742 2 Stillwater OK   9533 SOUTHWESTERN BELL 536      
405-742 3 Stillwater OK   9533 SOUTHWESTERN BELL 536      
405-742 4 Stillwater OK   9533 SOUTHWESTERN BELL 536      
405-742 5 Stillwater OK   9533 SOUTHWESTERN BELL 536      
405-742 6 Stillwater OK   9533 SOUTHWESTERN BELL 536      
405-742 7 Stillwater OK   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536      
405-742 8 Stillwater OK   9533 SOUTHWESTERN BELL 536      
405-742 9 Stillwater OK   9533 SOUTHWESTERN BELL 536      

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

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