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.

Switch: BTRGLA12XQZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
225-366 1 Baton Rouge LA 321J HD CARRIER LLC 492   2025-08-15   
225-512 A Baton Rouge LA 321J HD CARRIER LLC 492      
225-512 8 Baton Rouge LA 321J HD CARRIER LLC 492   2023-05-11   
225-512 9 Baton Rouge LA 321J HD CARRIER LLC 492   2023-05-11   
225-536 6 Baton Rouge LA 321J HD CARRIER LLC 492   2026-06-27   
225-536 7 Baton Rouge LA 321J HD CARRIER LLC 492   2026-06-27   
225-576 5 Baton Rouge LA 321J HD CARRIER LLC 492   2026-06-27   
225-576 7 Baton Rouge LA 321J HD CARRIER LLC 492   2026-06-27   
225-935 6 Baton Rouge LA 321J HD CARRIER LLC 492   2025-08-15   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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