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: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

NXX: 260

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-260 A Baltimore MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-260 0 Baltimore MD   876D ONVOY, LLC - MD 238   2025-01-06   
667-260 1 Baltimore MD   876D ONVOY, LLC - MD 238   2025-01-06   
667-260 2 Baltimore MD   318J COMCAST IP PHONE, LLC 238   2017-06-30   
667-260 3 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2023-09-19   
667-260 4 Baltimore MD   318J COMCAST IP PHONE, LLC 238   2017-10-02   
667-260 5 Baltimore MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2017-10-01   
667-260 6 Baltimore MD   876D ONVOY, LLC - MD 238   2016-02-12   
667-260 7 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-08-12   
667-260 8 Baltimore MD   551G NUSO, LLC 238   2016-04-01   
667-260 9 Baltimore MD   515J IP HORIZON LLC 238   2016-05-31   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.