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.

Chicago Zone 01-Wabash, IL

1 2 3 4 5 6 7 8 9 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
312-203 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-206 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-208 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-212 A CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-212 0 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-212 1 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-212 2 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-212 3 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-212 4 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-212 5 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-212 6 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-212 7 BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-212 8 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-212 9 CHCGILACGT0  8702 RCN TELECOM SERVICES OF ILLINIOS, INC. - IL 358      
312-213 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-218 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-232 A CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-235 A CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-235 0 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-235 1 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-235 2 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-235 3   829J PAETEC ITEL, LLC 358      
312-235 4   460K FIRST COMMUNICATIONS, LLC 358      
312-235 5   460K FIRST COMMUNICATIONS, LLC 358      
312-235 6 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-235 7 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-235 8 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-235 9 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-237 A RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-237 0 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-237 1 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-237 2 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-237 3   829J PAETEC ITEL, LLC 358      
312-237 4   460K FIRST COMMUNICATIONS, LLC 358      
312-237 5 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-237 6 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-237 7 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-237 8 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-237 9 RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-242 A CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-242 0 CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-242 1 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-242 2   460K FIRST COMMUNICATIONS, LLC 358      
312-242 3 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-242 4   460K FIRST COMMUNICATIONS, LLC 358      
312-242 5 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-242 6   460K FIRST COMMUNICATIONS, LLC 358      
312-242 7 CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-242 8   460K FIRST COMMUNICATIONS, LLC 358      
312-242 9   460K FIRST COMMUNICATIONS, LLC 358      
312-249 A CHCGILWUDS4  6630 USA MOBILITY WIRELESS, INC. 358      
312-259 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-271 A CHCGILWUDS4  6630 USA MOBILITY WIRELESS, INC. 358      
312-282 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-286 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-291 A CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-291 0 CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-291 1 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
312-291 2   460K FIRST COMMUNICATIONS, LLC 358      
312-291 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-291 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-291 5 CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-291 6 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-291 7   460K FIRST COMMUNICATIONS, LLC 358      
312-291 8 CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
312-291 9 CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
312-293 A CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-294 A CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-299 A CHCGILWBXDZ  6630 USA MOBILITY WIRELESS, INC. 358      
312-307 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-315 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-316 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-320 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-322 A CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-323 A CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-330 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-333 A CHCGILBWCM2  9748 AMERICAN MESSAGING SERVICES, LLC 358      
312-339 A RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-341 A CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-342 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-343 A RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-344 A CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-344 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-344 1 CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
312-344 2 CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358      
312-344 3 CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
312-344 4 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-344 5 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-344 6 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-344 7 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-344 8 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-344 9 CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-347 A CHCGILWBDS3  9329 ILLINOIS BELL TEL CO 358      
312-349 A CHCGILWUDS4  6630 USA MOBILITY WIRELESS, INC. 358      
312-350 A RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-351 A BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-351 0 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-351 1 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-351 2 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-351 3 BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      

1 2 3 4 5 6 7 8 9 >>

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.