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: 972 [Rate centres in NPA 972] [Dial plan for NPA 972]

NXX: 734

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-734 A Princeton EMS TX PRTNTXRERS0  9533 SOUTHWESTERN BELL 552      
972-734 0 Princeton EMS TX   515J IP HORIZON LLC 552      
972-734 1 Princeton EMS TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
972-734 2 Princeton EMS TX PRTNTXRERS0  9533 SOUTHWESTERN BELL 552      
972-734 3 Princeton EMS TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
972-734 4 Princeton EMS TX DLLATX37DMD  8489 GLOBAL CROSSING LOCAL SERVICES, INC. - TX 552      
972-734 5 Princeton EMS TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
972-734 6 Princeton EMS TX PRTNTXRERS0  9533 SOUTHWESTERN BELL 552      
972-734 7 Princeton EMS TX DLLSTXHW6MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 552      
972-734 8 Princeton EMS TX DLLSTXBKDS0  004F BANDWIDTH.COM CLEC, LLC - TX 552      
972-734 9 Princeton EMS TX RCSNTXHVBMD  516C AT&T CORP. 552      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.