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.
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Switch: NRWLCT02Y0X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
475-257 A Norwalk CT 425J CSC WIRELESS, LLC 920      
475-257 0 Norwalk CT 425J CSC WIRELESS, LLC 920   2019-06-06   
475-257 1 Norwalk CT 425J CSC WIRELESS, LLC 920   2019-06-06   
475-257 2 Norwalk CT 425J CSC WIRELESS, LLC 920   2019-05-12   
475-257 7 Norwalk CT 425J CSC WIRELESS, LLC 920   2019-06-06   
475-257 8 Norwalk CT 425J CSC WIRELESS, LLC 920   2019-06-06   
475-257 9 Norwalk CT 425J CSC WIRELESS, LLC 920   2019-06-06   
475-259 4 Darien CT 425J CSC WIRELESS, LLC 920   2019-12-20   
475-259 6 Darien CT 425J CSC WIRELESS, LLC 920   2019-12-20   
475-368 1 Darien CT 425J CSC WIRELESS, LLC 920   2024-07-25   
475-368 8 Darien CT 425J CSC WIRELESS, LLC 920   2024-07-25   
475-850 2 Norwalk CT 425J CSC WIRELESS, LLC 920   2023-08-20   
475-850 3 Norwalk CT 425J CSC WIRELESS, LLC 920   2023-10-20   
475-889 4 Norwalk CT 425J CSC WIRELESS, LLC 920   2020-04-23   
475-889 5 Norwalk CT 425J CSC WIRELESS, LLC 920   2020-04-23   
959-209 0 Watertown CT 425J CSC WIRELESS, LLC 920   2019-06-01   
959-209 5 Watertown CT 425J CSC WIRELESS, LLC 920   2019-07-11   
959-209 6 Watertown CT 425J CSC WIRELESS, LLC 920   2019-07-11   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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