Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: YALEOKMARS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
918-387 A Yale OK 9533 SOUTHWESTERN BELL 538      
918-387 1 Yale OK 9533 SOUTHWESTERN BELL 538      
918-387 2 Yale OK 9533 SOUTHWESTERN BELL 538      
918-387 4 Yale OK 9533 SOUTHWESTERN BELL 538      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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