Local Calling Guide

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

NXX: 830

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-830 A Catonsville MD HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-830 0 Catonsville MD HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-830 1 Catonsville MD HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-830 2 Catonsville MD HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-830 3 Catonsville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-09-23   
443-830 4 Catonsville MD BLTMMDCHXMX  506J TWILIO INTERNATIONAL, INC. 238   2020-12-26   
443-830 5 Catonsville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-11   
443-830 6 Catonsville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-11   
443-830 7 Catonsville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2021-10-10   
443-830 8 Catonsville MD BLTMMDCHXQX  197D VONAGE AMERICA LLC 238   2022-10-07   
443-830 9 Catonsville MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-22   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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