Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 417 [Rate centres in NPA 417] [Dial plan for NPA 417]

NXX: 603

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-603 A Springfield MO SPFDMOPY0MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 522      
417-603 0 Springfield MO SPFDMOMCX9X  993E BANDWIDTH.COM CLEC, LLC - MO 522   2024-10-05   
417-603 1 Springfield MO SPFDMOMCX9X  993E BANDWIDTH.COM CLEC, LLC - MO 522   2024-10-05   
417-603 6 Springfield MO   6123 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 522   2025-08-01   
417-603 8 Springfield MO SPFDMOMCX9X  993E BANDWIDTH.COM CLEC, LLC - MO 522   2024-10-05   
417-603 9 Springfield MO SPFDMOPY0MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 522   2023-05-11   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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