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: 337 [Rate centres in NPA 337] [Dial plan for NPA 337]

NXX: 399

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-399 A Lafayette LA LFYTLAMAX8Z  197D VONAGE AMERICA LLC 488      
337-399 0 Lafayette LA LFYTLAMAX8Z  197D VONAGE AMERICA LLC 488   2018-05-04   
337-399 1 Lafayette LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488   2020-10-24   
337-399 2 Lafayette LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488   2020-10-24   
337-399 3 Lafayette LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488   2020-10-24   
337-399 7 Lafayette LA LFYTLAMAX7Z  624H ONVOY SPECTRUM, LLC 488   2022-05-13   
337-399 8 Lafayette LA LFYTLAMAX7Z  624H ONVOY SPECTRUM, LLC 488   2022-04-16   
337-399 9 Lafayette LA LFYTLAMAXAZ  965H FRACTEL, LLC 488   2020-01-17   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.