Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 820 [Rate centres in NPA 820] [Dial plan for NPA 820]

NXX: 280

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
820-280 A Los Alamos CA SNBBCAXFXHY  321J HD CARRIER LLC 740      
820-280 0 Los Alamos CA SNLOCA01XCX  981E BANDWIDTH.COM CLEC, LLC - CA 740   2021-06-17   
820-280 1 Los Alamos CA SNLOCA01XFX  649C ONVOY, LLC - CA 740   2021-07-28   
820-280 2 Los Alamos CA SNLOCA01XFX  649C ONVOY, LLC - CA 740   2021-08-13   
820-280 6 Los Alamos CA SNBBCAXFXMX  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 740   2021-04-22   
820-280 8 Los Alamos CA SNBBCAXFX1Y  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 740   2022-03-19   
820-280 9 Los Alamos CA SNBBCAXFXHY  321J HD CARRIER LLC 740   2019-11-23   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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