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.

Columbia, CT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
860-228 A CLMACT00RS4  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
860-337 A HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920      
860-337 0 WLMNCT131MD  777C CHARTER FIBERLINK CT-CCO, LLC - CT 920   2005-01-17   
860-337 1 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2008-11-29   
860-337 2 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-09-09   
860-337 3 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2020-08-13   
860-337 4 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-02-08   
860-337 5 HRFRCT03GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2011-04-25   
860-337 6 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-11-21   
860-337 7 SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2007-01-12   
860-337 8 HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-03   
860-337 9 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2021-01-10   
860-359 A HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920      
860-359 0 HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-03   
860-359 1 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-05-23   
860-359 2 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2016-07-14   
860-359 3 SMFRCTATXMD  3083 PAETEC COMMUNICATIONS, LLC - CT 920   2008-02-14   
860-359 4 SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-07-17   
860-359 5 HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2020-01-15   
860-359 6 HRFRCT03XMX  145J TERRA NOVA TELECOM INC. 920   2020-12-12   
860-359 7 NWLNCTCS6MD  508J CENTURYLINK COMMUNICATIONS LLC 920   2014-07-09   
860-359 8 HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2015-05-17   
860-359 9 HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920      
860-530 A HRFRCTCR3MD  318J COMCAST IP PHONE LLC 920      
860-530 0 HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-08-09   
860-530 1 HRFRCTCR3MD  318J COMCAST IP PHONE LLC 920      
860-530 2 HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-06-21   
860-530 3 HRFRCTCR3MD  318J COMCAST IP PHONE LLC 920   2015-03-20   
860-530 4 HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-02-28   
860-530 5 HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-02-28   
860-530 6 HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-06-21   
860-530 7 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2020-06-05   
860-530 8 HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-08-09   
860-530 9 HRFRCT03HMD  073H TELNYX LLC 920   2018-05-09   
959-510 A   624H ONVOY SPECTRUM, LLC 920   2021-04-17   
959-510 0   624H ONVOY SPECTRUM, LLC 920   2021-04-17   
959-510 1   506J TWILIO INTERNATIONAL INC 920   2021-04-19   
959-510 2   639C ONVOY, LLC - CT 920   2021-11-25   
959-510 3   199F BANDWIDTH.COM CLEC, LLC - CT 920   2021-12-19   
959-510 5   639C ONVOY, LLC - CT 920   2021-04-18   
959-510 6   639C ONVOY, LLC - CT 920   2021-04-18   
959-510 8   624H ONVOY SPECTRUM, LLC 920   2022-02-04   
959-510 9   624H ONVOY SPECTRUM, LLC 920   2022-02-04   

Last updated: Wed, 12 Jan 2022 16:20:07 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.