Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

NXX: 936

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-936 A Elkridge MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-936 0 Elkridge MD BLTMMDCHX7X  073H TELNYX LLC 238      
443-936 1 Elkridge MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238      
443-936 2 Elkridge MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-936 3 Elkridge MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-936 4 Elkridge MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
443-936 5 Elkridge MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-936 6 Elkridge MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238      
443-936 7 Elkridge MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-936 8 Elkridge MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-936 9 Elkridge MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.