Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 331

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-331 A Washington Zone 3 MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-331 0 Washington Zone 3 MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-331 1 Washington Zone 3 MD   145J TERRA NOVA TELECOM INC. 236      
240-331 2 Washington Zone 3 MD WASHDC12MMD  516J TON80 COMMUNICATIONS, LLC 236      
240-331 3 Washington Zone 3 MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-331 4 Washington Zone 3 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236      
240-331 5 Washington Zone 3 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-331 6 Washington Zone 3 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-331 7 Washington Zone 3 MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-331 8 Washington Zone 3 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-331 9 Washington Zone 3 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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