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: 650 [Rate centres in NPA 650] [Dial plan for NPA 650]

NXX: 247

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-247 A Woodside CA SNJUCACL4MD  939H COMMIO, LLC 722   2024-03-03   
650-247 0 Woodside CA   939H COMMIO, LLC 722   2024-03-03   
650-247 1 Woodside CA   939H COMMIO, LLC 722   2024-03-03   
650-247 2 Woodside CA   624H ONVOY SPECTRUM, LLC 722   2025-01-30   
650-247 5 Woodside CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2024-11-30   
650-247 6 Woodside CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2024-11-30   
650-247 7 Woodside CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2024-11-30   
650-247 8 Woodside CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2024-11-30   
650-247 9 Woodside CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2024-11-30   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.