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: 630

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-630 A Chase MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-630 0 Chase MD BLTMMD91DS1  2593 CORE COMMUNICATIONS, INC.- MD 238   2004-03-29   
410-630 1 Chase MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238   2005-12-12   
410-630 2 Chase MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2005-03-10   
410-630 3 Chase MD BLTMMDSNDS5  4773 XO MARYLAND, LLC 238   2005-08-14   
410-630 4 Chase MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2004-02-07   
410-630 5 Chase MD BLTMMDSNDS5  4773 XO MARYLAND, LLC 238   2005-08-14   
410-630 6 Chase MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238   2005-08-14   
410-630 7 Chase MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238   2005-08-14   
410-630 8 Chase MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238   2005-12-12   
410-630 9 Chase MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      

Last updated: Wed, 01 Dec 2021 01:40:16 UTC

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