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: 417 [Rate centres in NPA 417] [Dial plan for NPA 417]

NXX: 618

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-618 A Springfield MO SPFDMOTLXDY  829J PAETEC ITEL, LLC 522      
417-618 1 Springfield MO SPFDMOTLXDY  829J PAETEC ITEL, LLC 522   2022-11-07   
417-618 2 Springfield MO SPFDMOTLXQY  624H ONVOY SPECTRUM, LLC 522   2023-06-02   
417-618 3 Springfield MO SPFDMOTLXQY  624H ONVOY SPECTRUM, LLC 522   2023-06-02   
417-618 6 Springfield MO   321J HD CARRIER LLC 522   2025-11-14   
417-618 7 Springfield MO   321J HD CARRIER LLC 522   2025-11-14   
417-618 9 Springfield MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2025-11-28   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.