Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

NXX: 452

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-452 A Cardiff MD CRDFMDCDRS0  9212 VERIZON MARYLAND, INC. 238      
410-452 0 Cardiff MD CRDFMDCDRS0  9212 VERIZON MARYLAND, INC. 238      
410-452 1 Cardiff MD BLTMMDCHAMD  1958 ATX TELECOMMUNICATIONS SERVICES, LTD. 238      
410-452 2 Cardiff MD BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238      
410-452 3 Cardiff MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
410-452 4 Cardiff MD BLTMMD91DS2  2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238      
410-452 5 Cardiff MD CRDFMDCDRS0  9212 VERIZON MARYLAND, INC. 238      
410-452 6 Cardiff MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
410-452 7 Cardiff MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
410-452 8 Cardiff MD CRDFMDCDRS0  9212 VERIZON MARYLAND, INC. 238      
410-452 9 Cardiff MD CRDFMDCDRS0  9212 VERIZON MARYLAND, INC. 238      

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

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