Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
580-266 A MRTHOKXADS0  2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 0   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 1   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 2   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 3   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 5   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 6   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 7   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 8   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-266 9   2025 SOUTHWEST OKLAHOMA TEL. CO. 536      
580-843 A ENIDOKKI0MD  6272 UNITED STATES CELLULAR - OK 536      
580-843 0   6272 UNITED STATES CELLULAR - OK 536      
580-843 1   5562 METROPCS, INC. 536   2025-05-08   
580-843 3   6529 T-MOBILE USA, INC. 536   2025-05-05   

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

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