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: 220 [Rate centres in NPA 220] [Dial plan for NPA 220]

NXX: 204

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
220-204 A Baltimore OH HLRDOHEJGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 324      
220-204 0 Baltimore OH HLRDOHEJGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 324      
220-204 1 Baltimore OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324      
220-204 2 Baltimore OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324      
220-204 3 Baltimore OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324      
220-204 4 Baltimore OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324      
220-204 5 Baltimore OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324      
220-204 6 Baltimore OH   624H ONVOY SPECTRUM, LLC 324      
220-204 7 Baltimore OH   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 324      
220-204 8 Baltimore OH HLRDOHEJGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 324      
220-204 9 Baltimore OH HLRDOHEJGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 324      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.