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: 456

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-456 A Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 0 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 1 Laurel MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2008-10-05   
240-456 2 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 3 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 4 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 5 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 6 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 7 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 8 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
240-456 9 Laurel MD LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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