Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Durham (Research Triangle Park), NC

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
919-248 A DRHMNCXEDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-254 A DRHMNCXFRS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-315 A DRHMNCXEDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-406 A DRHMNCXEDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-406 0   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-406 1   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-406 2   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-406 3   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-406 4   6324 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 426   2008-06-09   
919-406 5   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-406 6   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-406 7   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-406 8   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-406 9   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-472 A DRHMNCXHDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-485 A DRHMNCXEDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-485 0   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-485 1   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-485 2   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-485 3   7555 LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 426      
919-485 4   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-485 5   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-485 6   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-485 7   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-485 8   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-485 9   6324 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 426   2009-06-28   
919-486 A DRHMNCXEDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-517 A DRHMNCXEDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-541 A DRHMNCXEDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-547 A DRHMNCXEDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-549 A DRHMNCXEDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-558 A DRHMNCXEDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-685 A DRHMNCXEDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-685 0   8645 SUNCOM DBA T-MOBILE USA 426   2007-01-03   
919-685 1   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-685 2   8645 SUNCOM DBA T-MOBILE USA 426   2007-01-03   
919-685 3   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-685 4   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-685 5   8645 SUNCOM DBA T-MOBILE USA 426   2007-01-03   
919-685 6   8645 SUNCOM DBA T-MOBILE USA 426   2007-04-11   
919-685 7   8645 SUNCOM DBA T-MOBILE USA 426   2006-11-09   
919-685 8   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-685 9   4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-905 A DRHMNCXHDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-990 A DRHMNCXEDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-991 A DRHMNCXHDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-992 A DRHMNCXHDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      
919-993 A DRHMNCXHDS0  4334 FRONTIER COMMUNICATIONS OF THE CAROLINAS INC. - NC 426      

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

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