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.

Rockford, IL

<< 1 2 3 4 5 6 7 8 9

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
815-921 1 LVPKILRNDS0  9329 ILLINOIS BELL TEL CO 360      
815-921 2 LVPKILRNDS0  9329 ILLINOIS BELL TEL CO 360      
815-921 3 LVPKILRNDS0  9329 ILLINOIS BELL TEL CO 360      
815-921 4 LVPKILRNDS0  9329 ILLINOIS BELL TEL CO 360      
815-921 6 LVPKILRNDS0  9329 ILLINOIS BELL TEL CO 360      
815-921 8 LVPKILRNDS0  9329 ILLINOIS BELL TEL CO 360      
815-921 9 LVPKILRNDS0  9329 ILLINOIS BELL TEL CO 360      
815-961 A RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-962 A RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-963 A RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-964 A RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-965 A RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-966 A RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-967 A RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-968 A RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-969 A RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-969 0 RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-969 1 RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-969 2 RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-969 3 RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-969 4 RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-969 5 RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-969 6 RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-969 7   145J TERRA NOVA TELECOM INC. 360   2023-02-16   
815-969 8 RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-969 9   145J TERRA NOVA TELECOM INC. 360   2022-08-03   
815-971 A RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-972 A RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-977 A RCFRILRTPMD  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 360      
815-977 0 RCFRILRTXGY  6265 UNITED STATES CELLULAR - IL 360   2004-10-25   
815-977 1 RCFRILRTXGY  6265 UNITED STATES CELLULAR - IL 360   2004-10-25   
815-977 2 RCFRILRCMMD  6529 T-MOBILE USA, INC. 360   2009-04-15   
815-977 3 RCFRILRTX4Y  318J COMCAST IP PHONE, LLC 360   2008-07-25   
815-977 4 RCFRILRTX4Y  318J COMCAST IP PHONE, LLC 360   2008-07-25   
815-977 5 RCFRILRTX4Y  318J COMCAST IP PHONE, LLC 360   2008-07-25   
815-977 6 RCFRILRCJMD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 360   2009-10-17   
815-977 7 RCFRILRCJMD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 360   2008-07-25   
815-977 8 RCFRILRCJMD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 360   2008-07-25   
815-977 9 RCFRILRTPMD  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 360   2003-08-16   
815-978 A RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360      
815-979 A RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360      
815-980 A RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360      
815-980 0 RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360   2006-08-11   
815-980 1 RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360   2006-08-11   
815-980 2 RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360   2006-08-11   
815-980 3 RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360   2006-11-04   
815-980 4 RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360   2006-11-04   
815-980 5 RCFRILRTTMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 360   2008-04-25   
815-980 6 RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360   2007-09-08   
815-980 7 RCFRILRTTMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 360   2007-07-22   
815-980 8 RCFRILRTTMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 360   2007-07-22   
815-980 9 RCFRILRTTMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 360   2007-07-22   
815-983 A RCFRILRTXBX  9748 AMERICAN MESSAGING SERVICES, LLC 360      
815-985 A RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360      
815-986 A RCFRILRTXOY  829J PAETEC ITEL, LLC 360   2024-12-10   
815-987 A RCFRILRTDS1  9329 ILLINOIS BELL TEL CO 360      
815-988 A RCFRILRTXGY  6265 UNITED STATES CELLULAR - IL 360      
815-997 A RCFRILRTXOY  829J PAETEC ITEL, LLC 360   2024-12-10   
815-997 0 RCFRILRCMMD  6529 T-MOBILE USA, INC. 360   2005-07-17   
815-997 1 RCFRILRTXOY  829J PAETEC ITEL, LLC 360   2003-06-06   
815-997 2 RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360   2005-06-05   
815-997 3 RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360   2005-07-29   
815-997 4 RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360   2005-09-03   
815-997 5 RCFRILRTXOY  829J PAETEC ITEL, LLC 360   2004-09-10   
815-997 6 RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360   2005-09-03   
815-997 7 RCFRILRTX5Y  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360   2005-11-04   
815-997 8 RCFRILRCMMD  6529 T-MOBILE USA, INC. 360   2005-07-17   
815-997 9 RCFRILRCMMD  6529 T-MOBILE USA, INC. 360   2006-01-30   

<< 1 2 3 4 5 6 7 8 9

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.