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: 309 [Rate centres in NPA 309] [Dial plan for NPA 309]

NXX: 988

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-988 A Lacon IL PEORILPJXYX  224C ONVOY, LLC 368      
309-988 0 Lacon IL PEORILPJX8Z  073H TELNYX LLC 368   2020-07-13   
309-988 1 Lacon IL PEORILPJXMZ  624H ONVOY SPECTRUM, LLC 368   2024-05-13   
309-988 2 Lacon IL PEORILPBGMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 368   2024-12-04   
309-988 3 Lacon IL PEORILPJ02Z  490J DISH WIRELESS, LLC 368   2023-11-04   
309-988 4 Lacon IL PEORILSCX0X  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 368   2023-03-05   
309-988 5 Lacon IL PEORILPJXYX  224C ONVOY, LLC 368   2021-02-26   
309-988 8 Lacon IL PEORILPJXOZ  965H FRACTEL, LLC 368   2020-08-07   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.