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: 851

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
541-851 A Klamath Falls OR KLFLOR54DS1  9638 QWEST CORPORATION 670      
541-851 0 Klamath Falls OR KLFLOR54DS1  9638 QWEST CORPORATION 670      
541-851 1 Klamath Falls OR CSBYORXXIMD  5820 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 670      
541-851 2 Klamath Falls OR MDFDOR33DS5  660C HUNTER CONSTRUCTION, INC. DBA HUNTER COMMS - OR 670      
541-851 3 Klamath Falls OR MDFDOR33DS5  660C HUNTER CONSTRUCTION, INC. DBA HUNTER COMMS - OR 670      
541-851 4 Klamath Falls OR KLFLOR54DS1  9638 QWEST CORPORATION 670      
541-851 5 Klamath Falls OR KLFLOR54DS1  9638 QWEST CORPORATION 670      
541-851 6 Klamath Falls OR EUGNOR53XIX  5562 METROPCS, INC. 670      
541-851 7 Klamath Falls OR EUGNOR53KMD  750E ONVOY, LLC - OR 670      
541-851 8 Klamath Falls OR KLFLOR54DS1  9638 QWEST CORPORATION 670      
541-851 9 Klamath Falls OR MDFDOR87PS0  352D CHARTER FIBERLINK OR-CCVII, LLC - OR 670      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.