Local Calling Guide

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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-753 A Waterloo (Washington DC LATA) MD WASHDCRKDS3  8992 ALLEGIANCE TELECOM, INC. - MD 236      
443-753 0 Waterloo (Washington DC LATA) MD   8992 ALLEGIANCE TELECOM, INC. - MD 236      
443-753 1 Waterloo (Washington DC LATA) MD   8992 ALLEGIANCE TELECOM, INC. - MD 236      
443-753 2 Waterloo (Washington DC LATA) MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2014-06-12   
443-753 3 Waterloo (Washington DC LATA) MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2015-01-21   
443-753 4 Waterloo (Washington DC LATA) MD   8992 ALLEGIANCE TELECOM, INC. - MD 236      
443-753 5 Waterloo (Washington DC LATA) MD   8992 ALLEGIANCE TELECOM, INC. - MD 236      
443-753 6 Waterloo (Washington DC LATA) MD   8992 ALLEGIANCE TELECOM, INC. - MD 236      
443-753 8 Waterloo (Washington DC LATA) MD   082H LOCAL ACCESS LLC - MD 236   2016-05-31   
443-753 9 Waterloo (Washington DC LATA) MD   8992 ALLEGIANCE TELECOM, INC. - MD 236      

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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