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: 657 [Rate centres in NPA 657] [Dial plan for NPA 657]

NXX: 565

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-565 A Santa Ana CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
657-565 0 Santa Ana CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2022-05-20   
657-565 1 Santa Ana CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2022-05-20   
657-565 2 Santa Ana CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2022-05-20   
657-565 3 Santa Ana CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2022-03-19   
657-565 4 Santa Ana CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2022-03-20   
657-565 5 Santa Ana CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2022-03-20   
657-565 6 Santa Ana CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2022-03-20   
657-565 7 Santa Ana CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2022-03-20   
657-565 8 Santa Ana CA GRDNCA02KMD  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2022-05-05   
657-565 9 Santa Ana CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2022-05-20   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.