Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 541 [Rate centres in NPA 541] [Dial plan for NPA 541]

NXX: 644

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
541-644 A Harrisburg OR EUGNOR14DS2  647F ELTOPIA COMMUNICATIONS LLC - OR 670      
541-644 1 Harrisburg OR   750E ONVOY, LLC - OR 670   2012-09-26   
541-644 2 Harrisburg OR   750E ONVOY, LLC - OR 670   2012-12-15   
541-644 3 Harrisburg OR   750E ONVOY, LLC - OR 670   2012-12-15   
541-644 4 Harrisburg OR   750E ONVOY, LLC - OR 670   2012-12-15   
541-644 5 Harrisburg OR   750E ONVOY, LLC - OR 670   2012-12-31   
541-644 6 Harrisburg OR   750E ONVOY, LLC - OR 670   2013-01-22   
541-644 7 Harrisburg OR   750E ONVOY, LLC - OR 670   2013-01-22   
541-644 8 Harrisburg OR   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 670   2013-03-01   
541-644 9 Harrisburg OR   508J CENTURYLINK COMMUNICATIONS, LLC 670   2014-04-10   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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