Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 309 [Rate centres in NPA 309] [Dial plan for NPA 309]

NXX: 760

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-760 A Monmouth IL MCMBILXDZMD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 977      
309-760 0 Monmouth IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 977      
309-760 1 Monmouth IL   224C ONVOY, LLC 977   2026-01-05   
309-760 3 Monmouth IL   624H ONVOY SPECTRUM, LLC 977   2023-07-29   
309-760 4 Monmouth IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 977      
309-760 6 Monmouth IL   224C ONVOY, LLC 977   2021-02-12   
309-760 7 Monmouth IL   224C ONVOY, LLC 977   2021-02-12   
309-760 8 Monmouth IL   318J COMCAST IP PHONE, LLC 977   2017-10-06   

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

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