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: 385 [Rate centres in NPA 385] [Dial plan for NPA 385]

NXX: 420

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
385-420 A Salt Lake City UT SLKDUTYI3MD  3231 LEVEL 3 COMMUNICATIONS, LLC - UT 660      
385-420 0 Salt Lake City UT SLKCUTMAX9X  117F BANDWIDTH.COM CLEC, LLC - UT 660   2018-10-27   
385-420 1 Salt Lake City UT DRPRUTKJ1MD  5562 METROPCS, INC. 660   2018-10-27   
385-420 2 Salt Lake City UT DRPRUTKJ1MD  5562 METROPCS, INC. 660   2018-10-27   
385-420 3 Salt Lake City UT SLKDUTBTAMD  6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2019-09-28   
385-420 4 Salt Lake City UT SLKCUTMAXKY  318J COMCAST IP PHONE, LLC 660   2018-10-27   
385-420 5 Salt Lake City UT WVCYUT14DS1  871E ONVOY, LLC - UT 660   2019-09-06   
385-420 6 Salt Lake City UT SLKCUTMAXHY  624H ONVOY SPECTRUM, LLC 660   2020-07-06   
385-420 7 Salt Lake City UT SLKDUTYI3MD  3231 LEVEL 3 COMMUNICATIONS, LLC - UT 660   2018-10-26   
385-420 8 Salt Lake City UT SLKCUTMAXHY  624H ONVOY SPECTRUM, LLC 660   2020-07-06   
385-420 9 Salt Lake City UT SLKCUT26DS1  526H PEERLESS NETWORK OF UTAH, LLC - UT 660   2018-10-27   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.