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: 364 [Rate centres in NPA 364] [Dial plan for NPA 364]

NXX: 444

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
364-444 A Mayfield KY MDVIKYMAXTX  896E ONVOY, LLC - KY 464      
364-444 0 Mayfield KY   073H TELNYX LLC 464   2020-07-11   
364-444 1 Mayfield KY   584J WEST KENTUCKY RURAL TELEPHONE COOPERATIVE CORPORAT 464   2020-11-28   
364-444 2 Mayfield KY   073H TELNYX LLC 464   2021-11-14   
364-444 3 Mayfield KY   073H TELNYX LLC 464   2022-06-19   
364-444 4 Mayfield KY   896E ONVOY, LLC - KY 464   2018-01-05   
364-444 5 Mayfield KY   939H COMMIO, LLC 464   2022-07-21   
364-444 6 Mayfield KY   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 464   2022-02-05   
364-444 7 Mayfield KY   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 464   2021-04-09   
364-444 8 Mayfield KY   073H TELNYX LLC 464   2021-04-02   
364-444 9 Mayfield KY   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 464   2021-04-09   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.