Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 860 [Rate centres in NPA 860] [Dial plan for NPA 860]

NXX: 556

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
860-556 A Canterbury CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
860-556 0 Canterbury CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
860-556 1 Canterbury CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2014-04-27   
860-556 2 Canterbury CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2008-01-30   
860-556 3 Canterbury CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-03-01   
860-556 4 Canterbury CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-07-17   
860-556 5 Canterbury CT HRFRCT03GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2011-04-25   
860-556 6 Canterbury CT NWLNCTCS6MD  508J CENTURYLINK COMMUNICATIONS, LLC 920   2014-07-09   
860-556 7 Canterbury CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-03   
860-556 8 Canterbury CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-03   
860-556 9 Canterbury CT WLMNCT132MD  792K CHARTER IP ENABLED SERVICES, LLC 920   2005-01-17   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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