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: 779 [Rate centres in NPA 779] [Dial plan for NPA 779]

NXX: 552

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-552 A Belvidere IL BLVDILEW0MD  972C DIGITAL NETWORK ACCESS COMMUNICATIONS, INC. - IL 360      
779-552 0 Belvidere IL BLVDILEW0MD  972C DIGITAL NETWORK ACCESS COMMUNICATIONS, INC. - IL 360   2007-07-21   
779-552 1 Belvidere IL RCFRILRTXRX  508J CENTURYLINK COMMUNICATIONS, LLC 360   2016-01-23   
779-552 2 Belvidere IL RCFRILRCX3X  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 360   2016-12-09   
779-552 3 Belvidere IL RCFRILRTPMD  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 360   2012-05-11   
779-552 7 Belvidere IL RCFRILRTX4Y  318J COMCAST IP PHONE, LLC 360   2015-10-02   
779-552 8 Belvidere IL RCFRILRTX4Y  318J COMCAST IP PHONE, LLC 360   2007-09-23   
779-552 9 Belvidere IL RCFRILRTXDX  846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 360   2010-06-13   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.