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: 608 [Rate centres in NPA 608] [Dial plan for NPA 608]

NXX: 478

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
608-478 A Sun Prairie WI MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354      
608-478 0 Sun Prairie WI MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354      
608-478 1 Sun Prairie WI MDSNWIGJGT0  7804 TDS METROCOM, INC. - WI 354      
608-478 2 Sun Prairie WI MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354      
608-478 3 Sun Prairie WI MDSNWI11X1X  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 354      
608-478 4 Sun Prairie WI MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354      
608-478 5 Sun Prairie WI MDSNWIGJGT0  7804 TDS METROCOM, INC. - WI 354      
608-478 6 Sun Prairie WI MDSNWI02ZMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 354      
608-478 7 Sun Prairie WI MDSNWI11XAX  225C ONVOY, LLC - WI 354      
608-478 8 Sun Prairie WI   225C ONVOY, LLC - WI 354      
608-478 9 Sun Prairie WI DGVLWIXAOMD  624H ONVOY SPECTRUM, LLC 354      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.