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: 227

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-227 A Port Deposit MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-227 0 Port Deposit MD   073H TELNYX LLC 238   2017-04-26   
443-227 1 Port Deposit MD   829J PAETEC ITEL, LLC 238      
443-227 2 Port Deposit MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-07-07   
443-227 3 Port Deposit MD   321J HD CARRIER LLC 238   2016-05-14   
443-227 4 Port Deposit MD   876D ONVOY, LLC - MD 238   2016-03-17   
443-227 5 Port Deposit MD   876D ONVOY, LLC - MD 238   2016-03-17   
443-227 6 Port Deposit MD   321J HD CARRIER LLC 238   2016-05-14   
443-227 7 Port Deposit MD   508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-12   
443-227 8 Port Deposit MD   321J HD CARRIER LLC 238   2016-05-14   
443-227 9 Port Deposit MD   321J HD CARRIER LLC 238   2016-05-14   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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