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: 661 [Rate centres in NPA 661] [Dial plan for NPA 661]

NXX: 560

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-560 A Wasco CA BKFDCA11XEX  506J TWILIO INTERNATIONAL, INC. 734      
661-560 0 Wasco CA BKFDCA11X7X  624H ONVOY SPECTRUM, LLC 734   2022-01-12   
661-560 1 Wasco CA BKFDCA01VMD  5562 METROPCS, INC. 734   2022-05-12   
661-560 2 Wasco CA BKFDCA01VMD  5562 METROPCS, INC. 734   2022-05-12   
661-560 3 Wasco CA BKFDCA11GMD  649C ONVOY, LLC - CA 734   2023-08-10   
661-560 4 Wasco CA BKFDCA11GMD  649C ONVOY, LLC - CA 734   2023-08-10   
661-560 5 Wasco CA BKFDCA11XEX  506J TWILIO INTERNATIONAL, INC. 734   2022-04-01   
661-560 6 Wasco CA BKFDCA11GMD  649C ONVOY, LLC - CA 734   2023-08-10   
661-560 7 Wasco CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2023-07-22   
661-560 8 Wasco CA BKFDCAKTXXX  490J DISH WIRELESS, LLC 734   2023-11-13   
661-560 9 Wasco CA BKFDCAKTX1X  939H COMMIO, LLC 734   2022-07-22   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.