Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 437

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-437 A Pocomoke MD SLBRMDSBXUX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242      
443-437 0 Pocomoke MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-04   
443-437 1 Pocomoke MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-04   
443-437 2 Pocomoke MD   145J TERRA NOVA TELECOM INC. 242   2021-12-09   
443-437 3 Pocomoke MD ESTNMDES5MD  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 242   2012-03-01   
443-437 4 Pocomoke MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-14   
443-437 5 Pocomoke MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2018-05-14   
443-437 6 Pocomoke MD SLBRMDSBXUX  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242   2012-05-01   
443-437 7 Pocomoke MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2006-07-31   
443-437 8 Pocomoke MD SLBRMD902MD  073H TELNYX LLC 242   2017-09-13   
443-437 9 Pocomoke MD SLBRMDSC9MD  281E YMAX COMMUNICATIONS CORP. - MD 242   2011-04-03   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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