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: 258

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-258 A Milano TX AUSTTXGR09Z  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
737-258 0 Milano TX AUSTTXGR62Z  490J DISH WIRELESS, LLC 558   2024-01-13   
737-258 2 Milano TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2019-10-11   
737-258 3 Milano TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2020-08-16   
737-258 4 Milano TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2020-08-16   
737-258 5 Milano TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2020-08-16   
737-258 6 Milano TX AUSTTXGR09Z  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558   2019-09-26   
737-258 7 Milano TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2020-09-13   
737-258 8 Milano TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2020-09-13   
737-258 9 Milano TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2020-09-13   

Last updated: Fri, 28 Jun 2024 03:14:50 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.