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: 615

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
541-615 A Madras OR WRSPOR05DS0  094G WARM SPRINGS TELECOMMUNICATIONS COMPANY - OR 672      
541-615 0 Madras OR   094G WARM SPRINGS TELECOMMUNICATIONS COMPANY - OR 672   2011-09-30   
541-615 1 Madras OR   076F BANDWIDTH.COM CLEC, LLC - OR 672   2012-06-22   
541-615 2 Madras OR   750E ONVOY, LLC - OR 672   2012-12-15   
541-615 3 Madras OR   750E ONVOY, LLC - OR 672   2012-12-15   
541-615 4 Madras OR   750E ONVOY, LLC - OR 672   2012-12-15   
541-615 5 Madras OR   750E ONVOY, LLC - OR 672   2013-01-10   
541-615 6 Madras OR   750E ONVOY, LLC - OR 672   2013-01-10   
541-615 7 Madras OR   750E ONVOY, LLC - OR 672   2013-01-26   
541-615 8 Madras OR   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 672   2014-03-14   
541-615 9 Madras OR   750E ONVOY, LLC - OR 672   2012-09-26   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.