Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 580 [Rate centres in NPA 580] [Dial plan for NPA 580]

NXX: 203

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-203 A Fort Towson OK OKCYOKCEXJY  409F ONVOY, LLC - OK 536      
580-203 0 Fort Towson OK   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536   2016-02-19   
580-203 1 Fort Towson OK   073H TELNYX LLC 536   2019-09-28   
580-203 2 Fort Towson OK   409F ONVOY, LLC - OK 536   2016-06-15   
580-203 3 Fort Towson OK   409F ONVOY, LLC - OK 536   2016-06-15   
580-203 4 Fort Towson OK   384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536   2019-10-27   
580-203 5 Fort Towson OK   409F ONVOY, LLC - OK 536   2020-07-11   
580-203 6 Fort Towson OK   409F ONVOY, LLC - OK 536   2020-07-11   
580-203 7 Fort Towson OK   409F ONVOY, LLC - OK 536   2021-03-04   
580-203 8 Fort Towson OK   409F ONVOY, LLC - OK 536   2021-03-04   
580-203 9 Fort Towson OK   073H TELNYX LLC 536   2021-03-06   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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