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: 203 [Rate centres in NPA 203] [Dial plan for NPA 203]

NXX: 872

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-872 A Cheshire CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
203-872 0 Cheshire CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-03   
203-872 1 Cheshire CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2022-08-22   
203-872 2 Cheshire CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-02-09   
203-872 3 Cheshire CT HRFRCT03GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2006-06-30   
203-872 4 Cheshire CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-05-10   
203-872 5 Cheshire CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2015-05-08   
203-872 6 Cheshire CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2016-05-04   
203-872 7 Cheshire CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2012-12-29   
203-872 8 Cheshire CT   145J TERRA NOVA TELECOM INC. 920   2020-11-27   
203-872 9 Cheshire CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2016-02-11   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.