Local Calling Guide

Area code/prefix search

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Stamford, CT

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
475-977 3 HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-08-08   
475-977 4 BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2024-08-13   
475-977 5 HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-11-22   
475-977 6 HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-11-22   
475-977 7 HRFRCT03XOX  965H FRACTEL, LLC 920   2020-09-17   
475-977 8 HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-11-22   
475-977 9 HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2020-11-22   

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Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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