Local Calling Guide

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

NXX: 329

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-329 A Waterloo (Washington DC LATA) MD WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 236      
443-329 0 Waterloo (Washington DC LATA) MD WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 236      
443-329 1 Waterloo (Washington DC LATA) MD WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 236      
443-329 2 Waterloo (Washington DC LATA) MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-02-20   
443-329 3 Waterloo (Washington DC LATA) MD WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2009-01-15   
443-329 4 Waterloo (Washington DC LATA) MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-329 5 Waterloo (Washington DC LATA) MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-20   
443-329 6 Waterloo (Washington DC LATA) MD WASHDCSWFMD  2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-30   
443-329 7 Waterloo (Washington DC LATA) MD WASHDCSWFMD  2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-30   
443-329 8 Waterloo (Washington DC LATA) MD WASHDC127MD  073H TELNYX LLC 236   2017-04-27   
443-329 9 Waterloo (Washington DC LATA) MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-20   

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

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