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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Williamsburg, ON

NPA-NXX BLOCK Switch OCN LATA Eff date Disc date Map
343-449 A   383H InnSysVoice Corp 888     map
343-482 A   4727 ISP Telecom 888     map
613-535 A WLBGON31RS0  8051 Bell Canada 888     map
613-641 A CRNWONCE0MD  4878 Bragg Communications Inc. 888     map

Last updated: Sun, 25 Feb 2018 14:40:42 UTC

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