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: 530 [Rate centres in NPA 530] [Dial plan for NPA 530]

NXX: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-231 A Davis CA WSCRCAKE0MD  6529 T-MOBILE USA, INC. 726      
530-231 0 Davis CA WSCRCAKE0MD  6529 T-MOBILE USA, INC. 726      
530-231 1 Davis CA SCRMCA01XSY  649C ONVOY, LLC - CA 726   2021-07-18   
530-231 2 Davis CA WSCRCAKE0MD  6529 T-MOBILE USA, INC. 726      
530-231 3 Davis CA RSVLCANLDS4  7262 XO CALIFORNIA, INC. 726   2006-03-10   
530-231 4 Davis CA SCRMCA01XXY  981E BANDWIDTH.COM CLEC, LLC - CA 726      
530-231 5 Davis CA SCRMCA0111Z  318J COMCAST IP PHONE, LLC 726   2006-09-30   
530-231 6 Davis CA RSVLCANLDS4  7262 XO CALIFORNIA, INC. 726   2006-11-19   
530-231 7 Davis CA RSVLCANLDS4  7262 XO CALIFORNIA, INC. 726   2008-11-09   
530-231 8 Davis CA SCRMCA0101Z  624H ONVOY SPECTRUM, LLC 726   2021-07-23   
530-231 9 Davis CA SCRMCA01XSY  649C ONVOY, LLC - CA 726   2021-07-18   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.