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: 838 [Rate centres in NPA 838] [Dial plan for NPA 838]

NXX: 639

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
838-639 A Delanson NY ALBYNYPSDS5  1215 CORETEL NEW YORK, INC. - NY 134      
838-639 0 Delanson NY   818H PEERING HUB, INC. - NY 134   2021-01-19   
838-639 1 Delanson NY   506H SEAMLESS GEOPORT COMM DBA MIDDLEBURGH TELEPHONE LD 134   2020-06-01   
838-639 3 Delanson NY   073H TELNYX LLC 134   2021-02-18   
838-639 4 Delanson NY   1215 CORETEL NEW YORK, INC. - NY 134   2019-04-12   
838-639 5 Delanson NY   515J IP HORIZON LLC 134   2021-10-15   
838-639 7 Delanson NY   384C ONVOY, LLC- NY 134   2021-03-15   
838-639 8 Delanson NY   384C ONVOY, LLC- NY 134   2020-06-21   
838-639 9 Delanson NY   384C ONVOY, LLC- NY 134   2020-06-21   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.