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.

NPA: 919 [Rate centres in NPA 919] [Dial plan for NPA 919]

NXX: 237

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
919-237 A Durham NC   829J PAETEC ITEL, LLC 426   2025-03-10   
919-237 0 Durham NC   829J PAETEC ITEL, LLC 426      
919-237 1 Durham NC DRHMNCEV0MD  793K TWC IP ENABLED SERVICES, LLC 426   2007-01-05   
919-237 2 Durham NC DRHMNCEV0MD  793K TWC IP ENABLED SERVICES, LLC 426   2007-01-05   
919-237 3 Durham NC DRHMNCEV0MD  793K TWC IP ENABLED SERVICES, LLC 426   2007-01-05   
919-237 4 Durham NC RLGHNCJVFMD  7555 LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 426   2006-07-21   
919-237 5 Durham NC RLGHNCJVFMD  7555 LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 426   2007-11-10   
919-237 6 Durham NC   829J PAETEC ITEL, LLC 426      
919-237 7 Durham NC RLGHNCJVFMD  7555 LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 426   2007-11-10   
919-237 8 Durham NC RLGHNCJVFMD  7555 LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 426   2007-11-10   
919-237 9 Durham NC RLGHNCJV4MD  3235 LEVEL 3 COMMUNICATIONS, LLC - NC 426   2008-07-17   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.