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.

Guilford, CT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
203-204 A HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-204 0 HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-204 1 SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-204 2 SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-204 3 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-204 4 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-204 5 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-204 6 SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-204 7 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-204 8 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-204 9 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-453 A GUFDCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-457 A MDSNCT02RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-457 0 MDSNCT02RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-457 1 MDSNCT02RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-457 2 MDSNCT02RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-457 3 HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920      
203-457 4 MDSNCT02RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-457 5 HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920      
203-457 6 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-457 7 NWHNCT02GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-457 8 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-457 9 MDSNCT02RS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-458 A GUFDCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-533 A SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-533 0 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-533 1 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-533 2 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-533 3 HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920      
203-533 4 SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-533 5 HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920      
203-533 6 SMFRCTATXMD  3083 PAETEC COMMUNICATIONS, LLC - CT 920      
203-533 7 HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920      
203-533 8 HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920      
203-533 9 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-689 A NWHNCT02X5X  7421 AT&T - LOCAL 920      
203-689 0 HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920      
203-689 1 NWHNCT030MD  3863 CTC COMMUNICATIONS CORP. - CT 920      
203-689 2 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-689 3 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-689 4 GUFDCT00DS0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-689 5 HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920      
203-689 6 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-689 7 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-689 8 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-689 9 NWHNCT02X5X  7421 AT&T - LOCAL 920      
203-738 A HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-738 0 HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-738 1 HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-738 2 HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-738 3 HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-738 4 HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-738 5 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-738 6 HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-738 7 NWLNCTCS6MD  508J CENTURYLINK COMMUNICATIONS, LLC 920      
203-738 8   5562 METROPCS, INC. 920      
203-738 9   5562 METROPCS, INC. 920      
203-884 A SMFRCTQI9MD  3493 GLOBAL CROSSING LOCAL SERVICES, INC. - CT 920      
203-884 0 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-884 1 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-884 2 NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920      
203-884 3 NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920      
203-884 4   624H ONVOY SPECTRUM, LLC 920      
203-884 5 NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920      
203-884 6 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-884 7 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
203-884 8 HRFRCT03HMD  073H TELNYX LLC 920      
203-884 9 SMFRCTQI9MD  3493 GLOBAL CROSSING LOCAL SERVICES, INC. - CT 920      
475-274 A HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
475-274 0 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
475-274 1   515J IP HORIZON LLC 920      
475-274 3 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-274 4 NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920      
475-274 5 NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920      
475-274 6 HRFRCT0383Z  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
475-274 7 HRFRCT03XSX  516J TON80 COMMUNICATIONS, LLC 920      
475-274 8 NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920      
475-274 9 HRFRCT0389Z  490J DISH WIRELESS, LLC 920      
475-900 A HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-900 0 HRFRCT03HMD  073H TELNYX LLC 920      
475-900 1 HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920      
475-900 2 HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920      
475-900 3 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-900 4 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-900 5 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-900 6 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
475-900 7 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-900 8 HRFRCTBCDS1  639C ONVOY, LLC - CT 920      
475-900 9 HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.