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: 346 [Rate centres in NPA 346] [Dial plan for NPA 346]

NXX: 449

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-449 A Channelview TX HSTDTXBGBMD  5562 METROPCS, INC. 560      
346-449 0 Channelview TX   5562 METROPCS, INC. 560   2020-12-19   
346-449 1 Channelview TX   5562 METROPCS, INC. 560   2020-12-19   
346-449 2 Channelview TX   5562 METROPCS, INC. 560   2020-12-19   
346-449 3 Channelview TX   5562 METROPCS, INC. 560   2020-12-19   
346-449 4 Channelview TX   903C ONVOY, LLC - TX 560   2020-12-20   
346-449 5 Channelview TX   903C ONVOY, LLC - TX 560   2020-12-20   
346-449 6 Channelview TX   903C ONVOY, LLC - TX 560   2021-01-30   
346-449 7 Channelview TX   903C ONVOY, LLC - TX 560   2021-01-30   
346-449 8 Channelview TX   903C ONVOY, LLC - TX 560   2021-02-18   
346-449 9 Channelview TX   5562 METROPCS, INC. 560   2020-12-19   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.