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.

Marks, MS

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
662-619 3   145J TERRA NOVA TELECOM INC. 482   2021-09-29   
662-619 4 JCSNMSCPXMZ  719E ONVOY, LLC - MS 482   2021-02-23   
662-619 5 JCSNMSCPXMZ  719E ONVOY, LLC - MS 482   2021-02-23   

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Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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