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: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-503 A Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-503 0 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2021-11-15   
346-503 1 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2021-11-15   
346-503 2 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2021-11-15   
346-503 3 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2021-11-15   
346-503 4 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2021-11-15   
346-503 5 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2021-11-15   
346-503 6 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2021-11-15   
346-503 7 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2021-11-15   
346-503 8 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2021-11-15   
346-503 9 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2021-11-15   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.