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: 518 [Rate centres in NPA 518] [Dial plan for NPA 518]

NXX: 559

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
518-559 A Cambridge NY ALBYNYSSXCY  384C ONVOY, LLC- NY 134      
518-559 0 Cambridge NY   384C ONVOY, LLC- NY 134   2016-07-11   
518-559 1 Cambridge NY   384C ONVOY, LLC- NY 134   2016-07-11   
518-559 2 Cambridge NY   384C ONVOY, LLC- NY 134   2019-09-09   
518-559 3 Cambridge NY   818H PEERING HUB, INC. - NY 134   2021-01-19   
518-559 4 Cambridge NY   384C ONVOY, LLC- NY 134   2023-01-15   
518-559 5 Cambridge NY   155E PEERLESS NETWORK OF NEW YORK, LLC - NY 134   2025-02-27   
518-559 6 Cambridge NY   384C ONVOY, LLC- NY 134   2021-03-15   
518-559 7 Cambridge NY   4006 LEVEL 3 COMMUNICATIONS, LLC - NY 134   2016-09-23   
518-559 8 Cambridge NY   073H TELNYX LLC 134   2021-02-12   
518-559 9 Cambridge NY   155E PEERLESS NETWORK OF NEW YORK, LLC - NY 134   2021-01-10   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.