Local Calling Guide

Area code/prefix search

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

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
580-872 3   6529 T-MOBILE USA, INC. 536   2026-07-16   
580-872 4 OKCZOKZCFMD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536      
580-872 9 OKCYOKCEDS7  384H PEERLESS NETWORK OF OKLAHOMA, LLC - OK 536   2021-07-24   

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Last updated: Fri, 10 Jul 2026 02:55:48 UTC

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