Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Sulphur, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
580-618 A OKCYOKMTBMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536      
580-618 0 OKCYOKMTBMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536      
580-618 1 OKCYOKMTBMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536      
580-618 2 OKCYOKMTBMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536      
580-618 3 OKCYOKMTBMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536      
580-618 4 OKCYOKMTBMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536      
580-618 5 OKCYOKMTBMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536      
580-618 6 OKCYOKMTBMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536      
580-618 7 OKCYOKMTBMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536   2018-11-15   
580-618 8 OKCYOKMTBMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536      
580-618 9 OKCYOKMTBMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536   2025-07-19   
580-622 A SLPHOKXADS0  1980 CHICKASAW TEL. CO. 536      
580-930 A OKCYOKMPAMD  5813 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 536      
580-930 0 OKCYOKMPAMD  5813 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 536   2023-07-01   
580-930 1 OKCYOKMPAMD  5813 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 536   2025-04-17   
580-930 2 OKCYOKMTBMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 536   2025-10-10   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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