Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 220 [Rate centres in NPA 220] [Dial plan for NPA 220]

NXX: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
220-231 A Johnstown OH CLMBOH11X6Z  7836 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 324      
220-231 0 Johnstown OH CLMBOH11X6Z  7836 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 324   2022-09-02   
220-231 1 Johnstown OH CLMBOH11X6Z  7836 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 324   2022-09-02   
220-231 2 Johnstown OH CLMBOH11X6Z  7836 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 324   2022-09-02   
220-231 3 Johnstown OH CLMBOH11X6Z  7836 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 324   2022-09-02   
220-231 4 Johnstown OH CLMBOH11X6Z  7836 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 324   2022-09-02   
220-231 5 Johnstown OH CLMBOH11X6Z  7836 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 324   2022-09-02   
220-231 6 Johnstown OH CLMBOH11X6Z  7836 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 324   2022-09-02   
220-231 7 Johnstown OH CLMBOH11X6Z  7836 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 324   2022-09-02   
220-231 8 Johnstown OH CLMBOH11X6Z  7836 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 324   2022-09-02   
220-231 9 Johnstown OH CLMBOH11X6Z  7836 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 324   2022-09-02   

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

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