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: 541 [Rate centres in NPA 541] [Dial plan for NPA 541]

NXX: 331

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
541-331 A Klamath Falls OR EUGNOR53XIX  5562 METROPCS, INC. 670      
541-331 0 Klamath Falls OR EUGNOR53XIX  5562 METROPCS, INC. 670      
541-331 1 Klamath Falls OR EUGNOR53XIX  5562 METROPCS, INC. 670      
541-331 2 Klamath Falls OR EUGNOR53XIX  5562 METROPCS, INC. 670      
541-331 3 Klamath Falls OR EUGNOR53XIX  5562 METROPCS, INC. 670      
541-331 4 Klamath Falls OR EUGNOR53XIX  5562 METROPCS, INC. 670      
541-331 5 Klamath Falls OR EUGNOR53XIX  5562 METROPCS, INC. 670      
541-331 6 Klamath Falls OR EUGNOR53XIX  5562 METROPCS, INC. 670      
541-331 7 Klamath Falls OR EUGNOR53XIX  5562 METROPCS, INC. 670   2006-10-18   
541-331 8 Klamath Falls OR EUGNOR53XIX  5562 METROPCS, INC. 670   2005-12-20   
541-331 9 Klamath Falls OR EUGNOR53XIX  5562 METROPCS, INC. 670      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.