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: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

NXX: 806

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-806 A Wheaton IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
331-806 0 Wheaton IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358   2017-04-28   
331-806 1 Wheaton IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2015-07-27   
331-806 2 Wheaton IL CHCGIL24DS6  224C ONVOY, LLC 358   2016-03-10   
331-806 3 Wheaton IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2015-07-26   
331-806 4 Wheaton IL LSLEILAADS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2016-06-17   
331-806 5 Wheaton IL CHCGIL24DS6  224C ONVOY, LLC 358   2016-03-10   
331-806 6 Wheaton IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358   2015-09-06   
331-806 7 Wheaton IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358   2015-09-06   
331-806 8 Wheaton IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358   2015-09-06   
331-806 9 Wheaton IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358   2017-04-28   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.