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]

<< 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 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-220 3 Crystal Lake IL   7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2012-04-13   
779-220 4 Crystal Lake IL   318J COMCAST IP PHONE, LLC 358   2012-09-16   
779-220 5 Crystal Lake IL   829J PAETEC ITEL, LLC 358   2011-08-18   
779-220 6 Crystal Lake IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-09-16   
779-220 7 Crystal Lake IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-09-16   
779-220 8 Crystal Lake IL   224C ONVOY, LLC 358   2012-09-30   
779-220 9 Crystal Lake IL   318J COMCAST IP PHONE, LLC 358   2013-01-13   
779-221 A Rockford IL RCFRILRTZMD  224C ONVOY, LLC 360      
779-221 0 Rockford IL   6529 T-MOBILE USA, INC. 360   2011-08-08   
779-221 1 Rockford IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 360   2011-01-20   
779-221 2 Rockford IL   224C ONVOY, LLC 360   2010-05-24   
779-221 3 Rockford IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 360   2010-11-01   
779-221 4 Rockford IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 360   2010-11-15   
779-221 5 Rockford IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 360   2010-12-15   
779-221 6 Rockford IL   6529 T-MOBILE USA, INC. 360   2010-11-27   
779-221 7 Rockford IL   6529 T-MOBILE USA, INC. 360   2010-11-27   
779-221 8 Rockford IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 360   2010-12-16   
779-221 9 Rockford IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 360   2011-11-07   
779-222 A Sycamore IL DKLBILRSTMD  073H TELNYX LLC 364      
779-222 0 Sycamore IL   073H TELNYX LLC 364   2020-07-20   
779-222 1 Sycamore IL   846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 364   2017-09-18   
779-222 2 Sycamore IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 364   2013-12-20   
779-222 3 Sycamore IL   7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 364   2014-11-05   
779-222 4 Sycamore IL   318J COMCAST IP PHONE, LLC 364   2014-09-15   
779-222 5 Sycamore IL   224C ONVOY, LLC 364   2018-08-01   
779-222 6 Sycamore IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 364   2015-07-12   
779-222 7 Sycamore IL   508J CENTURYLINK COMMUNICATIONS, LLC 364   2014-08-08   
779-222 8 Sycamore IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 364   2018-12-08   
779-222 9 Sycamore IL   495J STRATUS NETWORKS 364   2020-10-14   
779-223 A Onarga IL CHCGIL24DS6  224C ONVOY, LLC 358      
779-223 0 Onarga IL   224C ONVOY, LLC 358   2016-05-19   
779-223 1 Onarga IL   224C ONVOY, LLC 358   2016-05-19   
779-223 2 Onarga IL   224C ONVOY, LLC 358   2018-09-16   
779-223 3 Onarga IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2018-10-28   
779-223 4 Onarga IL   224C ONVOY, LLC 358   2019-09-06   
779-223 5 Onarga IL   224C ONVOY, LLC 358   2020-06-20   
779-223 6 Onarga IL   318J COMCAST IP PHONE, LLC 358   2020-03-13   
779-223 7 Onarga IL   508J CENTURYLINK COMMUNICATIONS, LLC 358   2017-08-31   
779-223 8 Onarga IL   224C ONVOY, LLC 358   2018-12-27   
779-223 9 Onarga IL   073H TELNYX LLC 358   2018-07-24   
779-224 A Momence IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
779-224 0 Momence IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2023-07-27   
779-224 1 Momence IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2023-07-27   
779-224 2 Momence IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2023-07-27   
779-224 3 Momence IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2023-07-27   
779-224 4 Momence IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-03-25   
779-224 5 Momence IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2023-07-23   
779-224 6 Momence IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2023-07-23   
779-224 7 Momence IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2023-07-23   
779-224 8 Momence IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2023-07-23   

<< 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 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.