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: 353

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-353 A Cardiff MD BLTQMD01DS0  469J CORETEL MARYLAND, INC. - MD 238      
667-353 0 Cardiff MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2020-10-28   
667-353 1 Cardiff MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2021-05-28   
667-353 2 Cardiff MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-22   
667-353 3 Cardiff MD BLTMMDCHXMX  506J TWILIO INTERNATIONAL, INC. 238   2020-12-26   
667-353 4 Cardiff MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-03-04   
667-353 5 Cardiff MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-03-04   
667-353 7 Cardiff MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-12-19   
667-353 8 Cardiff MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-12-06   
667-353 9 Cardiff MD BLTQMD01DS0  469J CORETEL MARYLAND, INC. - MD 238   2019-11-11   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.