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: 785 [Rate centres in NPA 785] [Dial plan for NPA 785]

NXX: 339

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
785-339 A Topeka KS TPKAKSJAXRY  318J COMCAST IP PHONE, LLC 534      
785-339 0 Topeka KS TPKAKSJAXNX  205F ONVOY, LLC - KS 534   2025-05-12   
785-339 1 Topeka KS TPKAKSJAXNX  205F ONVOY, LLC - KS 534   2025-05-12   
785-339 2 Topeka KS TPKAKSJAXNX  205F ONVOY, LLC - KS 534   2025-05-12   
785-339 3 Topeka KS TPKAKSJAXNX  205F ONVOY, LLC - KS 534   2025-05-12   
785-339 4 Topeka KS TPKAKSJAXRY  318J COMCAST IP PHONE, LLC 534      
785-339 5 Topeka KS TPKAKSKVX6X  205F ONVOY, LLC - KS 534      
785-339 6 Topeka KS TPKAKSJAXUX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 534   2025-05-16   
785-339 7 Topeka KS TPKAKSKVDS0  018H PEERLESS NETWORK OF KANSAS, LLC - KS 534   2026-07-10   
785-339 9 Topeka KS JNCYKSXAUMD  593K MCC TELEPHONY LLC 534   2025-06-29   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.