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: 940 [Rate centres in NPA 940] [Dial plan for NPA 940]

NXX: 634

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
940-634 A Rosston TX DCTRTXXAUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
940-634 0 Rosston TX DCTRTXXAUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
940-634 1 Rosston TX DCTRTXXAUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
940-634 2 Rosston TX DCTRTXXAUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
940-634 3 Rosston TX DCTRTXXAUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
940-634 4 Rosston TX DCTRTXXAUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
940-634 5 Rosston TX DCTRTXXAUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
940-634 6 Rosston TX DLLSTX97X9X  516J TON80 COMMUNICATIONS, LLC 552   2021-10-05   
940-634 7 Rosston TX DCTRTXXAUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
940-634 8 Rosston TX DCTRTXXAUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
940-634 9 Rosston TX DCTRTXXAUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.