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.

Switch: DVNPIA80XTX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
309-507 9 Geneseo IL 145J TERRA NOVA TELECOM INC. 634   2026-03-15   
309-539 5 Hampton IL 145J TERRA NOVA TELECOM INC. 634   2026-02-05   
309-707 0 Cambridge IL 145J TERRA NOVA TELECOM INC. 634   2026-02-05   
319-237 2 Burlington IA 145J TERRA NOVA TELECOM INC. 634   2026-04-20   
563-594 4 Davenport IA 145J TERRA NOVA TELECOM INC. 634   2026-03-16   
563-844 A Davenport IA 145J TERRA NOVA TELECOM INC. 634      

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

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