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: 369

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-369 A Rockdale TX AUSTTXGREMD  939H COMMIO, LLC 558   2024-02-22   
737-369 0 Rockdale TX AUSTTXGREMD  939H COMMIO, LLC 558   2024-02-22   
737-369 1 Rockdale TX AUSTTXGREMD  939H COMMIO, LLC 558   2024-02-22   
737-369 2 Rockdale TX AUSTTXGREMD  939H COMMIO, LLC 558   2024-02-22   
737-369 3 Rockdale TX AUSTTXGREMD  939H COMMIO, LLC 558   2024-02-22   
737-369 4 Rockdale TX   6529 T-MOBILE USA, INC. 558   2025-06-18   
737-369 5 Rockdale TX   6529 T-MOBILE USA, INC. 558   2025-06-18   
737-369 6 Rockdale TX   6529 T-MOBILE USA, INC. 558   2025-06-18   
737-369 7 Rockdale TX   6529 T-MOBILE USA, INC. 558   2025-06-18   
737-369 8 Rockdale TX AUSTTXHOX3X  318C CEBRIDGE TELECOM TX , L.P. - TX 558   2024-04-14   
737-369 9 Rockdale TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2025-01-06   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.