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: 447 [Rate centres in NPA 447] [Dial plan for NPA 447]

NXX: 336

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
447-336 A Mount Pulaski IL SPFDILESXTX  965H FRACTEL, LLC 374      
447-336 0 Mount Pulaski IL SPFDILESXQX  624H ONVOY SPECTRUM, LLC 374   2024-05-25   
447-336 1 Mount Pulaski IL SPFDILMB0MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 374   2022-08-06   
447-336 3 Mount Pulaski IL SPFDILES7MD  224C ONVOY, LLC 374   2021-08-12   
447-336 6 Mount Pulaski IL   145J TERRA NOVA TELECOM INC. 374   2025-06-01   
447-336 8 Mount Pulaski IL SPFDILESXTX  965H FRACTEL, LLC 374   2021-04-17   
447-336 9 Mount Pulaski IL SPFDILESX8Y  490J DISH WIRELESS, LLC 374   2023-07-07   

Last updated: Tue, 15 Jul 2025 18:46:49 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.