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.

Krakow, WI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
920-899 A PLSKWIXARS0  0938 NORTHEAST TEL. CO. 350      
920-942 A GNBYWIEL9MD  516J TON80 COMMUNICATIONS, LLC 350      
920-942 1   793K TWC IP ENABLED SERVICES, LLC 350   2025-08-24   
920-942 6 GNBYWIEL9MD  516J TON80 COMMUNICATIONS, LLC 350   2022-03-17   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.