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: 623

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-623 A Joplin MO JPLNMOMADS0  9533 SOUTHWESTERN BELL 522      
417-623 0 Joplin MO JPLNMOMADS0  9533 SOUTHWESTERN BELL 522      
417-623 1 Joplin MO JPLNMOMADS0  9533 SOUTHWESTERN BELL 522      
417-623 2 Joplin MO JPLNMOMADS0  9533 SOUTHWESTERN BELL 522      
417-623 3 Joplin MO JPLNMOMADS0  9533 SOUTHWESTERN BELL 522      
417-623 4 Joplin MO JPLNMOMADS0  9533 SOUTHWESTERN BELL 522      
417-623 5 Joplin MO JPLNMOMADS0  9533 SOUTHWESTERN BELL 522      
417-623 6 Joplin MO JPLNMOMADS0  9533 SOUTHWESTERN BELL 522      
417-623 7 Joplin MO JPLNMOMADS0  9533 SOUTHWESTERN BELL 522      
417-623 8 Joplin MO JPLNMOMADS0  9533 SOUTHWESTERN BELL 522      
417-623 9 Joplin MO   624H ONVOY SPECTRUM, LLC 522   2024-03-28   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.