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: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-200 A Bartlett IL CHCGILMFCM2  6529 T-MOBILE USA, INC. 358   2011-08-25   
331-200 0 Bartlett IL   6529 T-MOBILE USA, INC. 358   2011-08-25   
331-200 1 Bartlett IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-12-15   
331-200 2 Bartlett IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2011-12-24   
331-200 3 Bartlett IL   224C ONVOY, LLC 358   2012-12-27   
331-200 4 Bartlett IL   224C ONVOY, LLC 358   2012-05-25   
331-200 5 Bartlett IL   224C ONVOY, LLC 358   2013-08-23   
331-200 6 Bartlett IL   7575 CENTURYLINK COMMUNICATIONS LLC 358   2013-06-26   
331-200 7 Bartlett IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-04-27   
331-200 8 Bartlett IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-04-27   
331-200 9 Bartlett IL   6529 T-MOBILE USA, INC. 358   2011-08-25   
331-201 A Downers Grove IL ELGNIL32CM2  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2012-03-09   
331-201 0 Downers Grove IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2012-03-09   
331-201 1 Downers Grove IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2012-03-09   
331-201 2 Downers Grove IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2012-04-21   
331-201 3 Downers Grove IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2012-04-29   
331-201 4 Downers Grove IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2012-05-19   
331-201 5 Downers Grove IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2012-05-19   
331-201 6 Downers Grove IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-09-23   
331-201 7 Downers Grove IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-10-26   
331-201 8 Downers Grove IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-12-20   
331-201 9 Downers Grove IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2012-12-28   
331-202 A Elmhurst IL ARLHILJQCM2  6664 SPRINT SPECTRUM L.P. 358   2012-03-02   
331-202 0 Elmhurst IL   6664 SPRINT SPECTRUM L.P. 358   2012-03-02   
331-202 1 Elmhurst IL   6664 SPRINT SPECTRUM L.P. 358   2012-03-02   
331-202 2 Elmhurst IL   6664 SPRINT SPECTRUM L.P. 358   2012-03-02   
331-202 3 Elmhurst IL   6664 SPRINT SPECTRUM L.P. 358   2012-03-02   
331-202 4 Elmhurst IL   6664 SPRINT SPECTRUM L.P. 358   2012-03-02   
331-202 5 Elmhurst IL   6664 SPRINT SPECTRUM L.P. 358   2012-03-02   
331-202 6 Elmhurst IL   6664 SPRINT SPECTRUM L.P. 358   2012-03-02   
331-202 7 Elmhurst IL   6664 SPRINT SPECTRUM L.P. 358   2012-03-02   
331-202 8 Elmhurst IL   6664 SPRINT SPECTRUM L.P. 358   2012-03-02   
331-202 9 Elmhurst IL   6664 SPRINT SPECTRUM L.P. 358   2012-03-02   
331-203 A Aurora IL AURRILVNCM0  6664 SPRINT SPECTRUM L.P. 358   2011-11-26   
331-203 0 Aurora IL   6664 SPRINT SPECTRUM L.P. 358   2011-11-26   
331-203 1 Aurora IL   6664 SPRINT SPECTRUM L.P. 358   2011-11-26   
331-203 2 Aurora IL   6664 SPRINT SPECTRUM L.P. 358   2011-11-26   
331-203 3 Aurora IL   6664 SPRINT SPECTRUM L.P. 358   2011-11-26   
331-203 4 Aurora IL   6664 SPRINT SPECTRUM L.P. 358   2011-11-26   
331-203 5 Aurora IL   6664 SPRINT SPECTRUM L.P. 358   2011-11-26   
331-203 6 Aurora IL   6664 SPRINT SPECTRUM L.P. 358   2011-11-26   
331-203 7 Aurora IL   6664 SPRINT SPECTRUM L.P. 358   2011-11-26   
331-203 8 Aurora IL   6664 SPRINT SPECTRUM L.P. 358   2011-11-26   
331-203 9 Aurora IL   6664 SPRINT SPECTRUM L.P. 358   2011-11-26   
331-204 A Naperville IL   224C ONVOY, LLC 358      
331-204 0 Naperville IL   224C ONVOY, LLC 358   2016-02-11   
331-204 1 Naperville IL   224C ONVOY, LLC 358   2016-02-11   
331-204 2 Naperville IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2016-04-14   
331-204 3 Naperville IL   224C ONVOY, LLC 358   2016-05-01   
331-204 4 Naperville IL   224C ONVOY, LLC 358   2016-05-01   

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 >>

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.