Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: RCKYOKMARS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
580-666 A Rocky OK 9533 SOUTHWESTERN BELL 536      
580-666 1 Rocky OK 9533 SOUTHWESTERN BELL 536      
580-666 2 Rocky OK 9533 SOUTHWESTERN BELL 536      

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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