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: 688

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-688 A Coupland TX AUSTTXGR51Z  965H FRACTEL, LLC 558      
737-688 0 Coupland TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2023-08-26   
737-688 3 Coupland TX AUSTTXGR55Z  516J TON80 COMMUNICATIONS, LLC 558   2021-07-10   
737-688 5 Coupland TX AUSTTXGR45Z  624H ONVOY SPECTRUM, LLC 558   2021-12-04   
737-688 6 Coupland TX AUSTTXGR45Z  624H ONVOY SPECTRUM, LLC 558   2021-12-04   
737-688 7 Coupland TX AUSTTXGR45Z  624H ONVOY SPECTRUM, LLC 558   2021-07-12   
737-688 8 Coupland TX AUSTTXGR51Z  965H FRACTEL, LLC 558   2021-07-09   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.