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.

Westminster, MD

<< 1 2 3 4 5

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
667-788 3 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2022-06-07   
667-788 4 BLTQMD019MD  490J DISH WIRELESS, LLC 238   2022-12-20   
667-788 6 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-01-15   
667-788 7 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-01-15   
667-788 8 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2022-05-09   
667-788 9 BLTMMDCHX3Y  2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2021-12-06   

<< 1 2 3 4 5

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.