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: 737 [Rate centres in NPA 737] [Dial plan for NPA 737]

NXX: 245

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-245 A Georgetown TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558      
737-245 0 Georgetown TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2018-04-27   
737-245 1 Georgetown TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2018-06-09   
737-245 2 Georgetown TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2018-06-09   
737-245 3 Georgetown TX AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2020-07-21   
737-245 4 Georgetown TX AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2018-06-05   
737-245 5 Georgetown TX AUSTTXGR09Z  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558   2018-04-28   
737-245 6 Georgetown TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2019-10-25   
737-245 7 Georgetown TX AUSTTXGR40Z  197D VONAGE AMERICA LLC 558   2018-12-07   
737-245 8 Georgetown TX AUSTTXGR40Z  197D VONAGE AMERICA LLC 558   2018-12-07   
737-245 9 Georgetown TX AUSTTXGR46Z  158H INVOXIO INCORPORATED 558   2018-07-29   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.