Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 319 [Rate centres in NPA 319] [Dial plan for NPA 319]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-995 7 Winfield IA   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 634   2023-03-05   
319-995 8 Winfield IA   221F ONVOY, LLC - IA 634   2022-11-25   
319-995 9 Winfield IA   145J TERRA NOVA TELECOM INC. 634   2025-05-31   
319-996 A Houghton IA DVNPIADTXZX  516J TON80 COMMUNICATIONS, LLC 634      
319-996 1 Houghton IA   624H ONVOY SPECTRUM, LLC 634   2024-12-19   
319-996 6 Houghton IA   516J TON80 COMMUNICATIONS, LLC 634   2022-05-04   
319-996 9 Houghton IA   145J TERRA NOVA TELECOM INC. 634   2025-05-27   
319-997 A New London IA DVNPIADTXZX  516J TON80 COMMUNICATIONS, LLC 634      
319-997 1 New London IA   624H ONVOY SPECTRUM, LLC 634   2024-12-19   
319-997 7 New London IA   516J TON80 COMMUNICATIONS, LLC 634   2022-05-10   
319-997 9 New London IA   145J TERRA NOVA TELECOM INC. 634   2025-05-31   
319-999 A Cedar Rapids IA CDRRIAAX0MD  624E ATKINS TELEPHONE COMPANY, INC. - IA 635      

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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