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: 266

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-266 A Martha OK MRTHOKXADS0  2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 0 Martha OK   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 1 Martha OK   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 2 Martha OK   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 3 Martha OK   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 5 Martha OK   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 6 Martha OK   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 7 Martha OK   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 8 Martha OK   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 9 Martha OK   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      

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

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