Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 601 [Rate centres in NPA 601] [Dial plan for NPA 601]

NXX: 821

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
601-821 A Naval Air Station MS JCSNMSCPXMZ  719E ONVOY, LLC - MS 482      
601-821 0 Naval Air Station MS   073H TELNYX LLC 482   2018-12-08   
601-821 1 Naval Air Station MS   719E ONVOY, LLC - MS 482   2016-09-18   
601-821 2 Naval Air Station MS   719E ONVOY, LLC - MS 482   2016-09-18   
601-821 3 Naval Air Station MS   4886 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS 482   2019-11-05   
601-821 4 Naval Air Station MS   719E ONVOY, LLC - MS 482   2020-12-19   
601-821 5 Naval Air Station MS   719E ONVOY, LLC - MS 482   2020-12-19   
601-821 6 Naval Air Station MS   458C TELEPORT COMMUNICATIONS AMERICA MS - LLC 482   2019-09-05   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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