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: 901 [Rate centres in NPA 901] [Dial plan for NPA 901]

NXX: 255

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
901-255 A Memphis TN MMPHTN32DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 468      
901-255 0 Memphis TN   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 468      
901-255 1 Memphis TN   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 468      
901-255 2 Memphis TN   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 468      
901-255 3 Memphis TN   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 468      
901-255 4 Memphis TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 468   2006-06-26   
901-255 5 Memphis TN   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 468      
901-255 6 Memphis TN   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 468      
901-255 7 Memphis TN   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 468      
901-255 8 Memphis TN   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 468      
901-255 9 Memphis TN   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 468      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.