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: 636 [Rate centres in NPA 636] [Dial plan for NPA 636]

NXX: 557

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-557 A Manchester MO STLTMOBODS1  7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520      
636-557 0 Manchester MO STLSMOGZ8MD  939H COMMIO, LLC 520      
636-557 1 Manchester MO STLTMOBODS1  7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520      
636-557 2 Manchester MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520      
636-557 4 Manchester MO   093F ONVOY, LLC - MO 520      
636-557 5 Manchester MO   093F ONVOY, LLC - MO 520      
636-557 6 Manchester MO STLSMOPL5MD  197D VONAGE AMERICA LLC 520      
636-557 7 Manchester MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520      
636-557 8 Manchester MO STLSMOGZ8MD  939H COMMIO, LLC 520      
636-557 9 Manchester MO STLSMOGZ8MD  939H COMMIO, LLC 520      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.