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: 253 [Rate centres in NPA 253] [Dial plan for NPA 253]

NXX: 766

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
253-766 A Kent WA STTLWANEDS0  7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674   2025-01-07   
253-766 0 Kent WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2022-03-03   
253-766 1 Kent WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2015-03-18   
253-766 2 Kent WA   516J TON80 COMMUNICATIONS, LLC 674   2021-07-01   
253-766 3 Kent WA   483E ONVOY, LLC - WA 674   2017-11-17   
253-766 4 Kent WA   483E ONVOY, LLC - WA 674   2017-11-17   
253-766 5 Kent WA   483E ONVOY, LLC - WA 674   2020-11-16   
253-766 6 Kent WA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674      
253-766 7 Kent WA   5562 METROPCS, INC. 674   2014-12-09   
253-766 8 Kent WA   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
253-766 9 Kent WA   5562 METROPCS, INC. 674   2014-09-12   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.