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: 903 [Rate centres in NPA 903] [Dial plan for NPA 903]

NXX: 587

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
903-587 A Leonard TX LNRDTXXARS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
903-587 0 Leonard TX LNRDTXXARS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
903-587 1 Leonard TX   515J IP HORIZON LLC 552   2017-12-15   
903-587 2 Leonard TX LNRDTXXARS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
903-587 3 Leonard TX LNRDTXXARS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
903-587 4 Leonard TX DLLSTX97X1X  073H TELNYX LLC 552   2019-05-17   
903-587 5 Leonard TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2020-08-20   
903-587 6 Leonard TX FTWQTXFH0MD  508J CENTURYLINK COMMUNICATIONS, LLC 552   2014-05-19   
903-587 7 Leonard TX DLLSTX23X9X  135H PEOPLES COMMUNICATION, INC. -TX 552   2013-12-01   
903-587 8 Leonard TX   145J TERRA NOVA TELECOM INC. 552   2020-11-06   
903-587 9 Leonard TX DLLSTX97DSS  177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2020-11-20   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.