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.

Park City, UT

<< 1 2 3 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
435-631 1   6010 NEW CINGULAR WIRELESS PCS, LLC 660      
435-631 2   117F BANDWIDTH.COM CLEC, LLC - UT 660   2011-08-26   
435-631 3   5727 FIRSTDIGITAL TELECOM, LLC - UT 660   2012-01-06   
435-631 4   6529 T-MOBILE USA, INC. 660   2011-02-04   
435-631 5   6529 T-MOBILE USA, INC. 660   2011-02-04   
435-631 6   6529 T-MOBILE USA, INC. 660   2011-02-04   
435-631 7   6529 T-MOBILE USA, INC. 660   2011-02-04   
435-631 8   5727 FIRSTDIGITAL TELECOM, LLC - UT 660   2012-01-06   
435-631 9   117F BANDWIDTH.COM CLEC, LLC - UT 660   2014-12-19   
435-640 A SLKDUTBTAMD  6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660      
435-645 A PRCYUTMADS0  9636 QWEST CORPORATION 660      
435-647 A PRCYUTMADS0  9636 QWEST CORPORATION 660      
435-647 0   9636 QWEST CORPORATION 660      
435-647 1   9636 QWEST CORPORATION 660      
435-647 2   9636 QWEST CORPORATION 660      
435-647 3   9636 QWEST CORPORATION 660      
435-647 4   9636 QWEST CORPORATION 660      
435-647 5   9636 QWEST CORPORATION 660      
435-647 6   6010 NEW CINGULAR WIRELESS PCS, LLC 660      
435-647 7   9636 QWEST CORPORATION 660      
435-647 8   9636 QWEST CORPORATION 660      
435-647 9   9636 QWEST CORPORATION 660      
435-649 A PRCYUTMADS0  9636 QWEST CORPORATION 660      
435-655 A PRCYUTMADS0  9636 QWEST CORPORATION 660      
435-655 0   9636 QWEST CORPORATION 660      
435-655 1   6010 NEW CINGULAR WIRELESS PCS, LLC 660      
435-655 2   9636 QWEST CORPORATION 660      
435-655 3   9636 QWEST CORPORATION 660      
435-655 4   9636 QWEST CORPORATION 660      
435-655 5   6010 NEW CINGULAR WIRELESS PCS, LLC 660      
435-655 6   9636 QWEST CORPORATION 660      
435-655 7   9636 QWEST CORPORATION 660      
435-655 8   9636 QWEST CORPORATION 660      
435-655 9   9636 QWEST CORPORATION 660      
435-658 A PRCYUTMADS0  9636 QWEST CORPORATION 660      
435-659 A SLKDUTBTAMD  6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660      
435-659 0   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2006-10-12   
435-659 1   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660      
435-659 2   3231 LEVEL 3 COMMUNICATIONS, LLC - UT 660   2011-03-05   
435-659 3   3231 LEVEL 3 COMMUNICATIONS, LLC - UT 660   2011-10-13   
435-659 4   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2009-03-21   
435-659 5   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2010-03-11   
435-659 6   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2005-11-06   
435-659 7   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2011-07-16   
435-659 8   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2007-03-10   
435-659 9   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660      
435-666 A SLKCUT26BMD  965H FRACTEL, LLC 660      
435-666 0   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2020-06-18   
435-666 1   318J COMCAST IP PHONE, LLC 660   2019-11-02   
435-666 2   073H TELNYX LLC 660   2020-10-03   
435-666 3   624H ONVOY SPECTRUM, LLC 660   2020-07-06   
435-666 4   624H ONVOY SPECTRUM, LLC 660   2020-07-06   
435-666 5   624H ONVOY SPECTRUM, LLC 660   2020-07-06   
435-666 6   965H FRACTEL, LLC 660   2019-03-26   
435-666 7   871E ONVOY, LLC - UT 660   2020-11-23   
435-666 8   871E ONVOY, LLC - UT 660   2021-03-17   
435-666 9   526H PEERLESS NETWORK OF UTAH, LLC - UT 660   2020-06-30   
435-699 A SLKCUT26BMD  965H FRACTEL, LLC 660      
435-699 0   939H COMMIO, LLC 660   2021-10-12   
435-699 1   939H COMMIO, LLC 660   2021-10-12   
435-699 2   515J IP HORIZON LLC 660   2022-04-09   
435-699 3   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2022-08-08   
435-699 4   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2023-05-11   
435-699 5   624H ONVOY SPECTRUM, LLC 660   2021-12-10   
435-699 6   624H ONVOY SPECTRUM, LLC 660   2021-12-10   
435-699 7   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2023-10-22   
435-699 8   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2024-05-26   
435-699 9   965H FRACTEL, LLC 660   2021-10-11   
435-714 A DRPRUTKJ0MD  6529 T-MOBILE USA, INC. 660      
435-714 0   6529 T-MOBILE USA, INC. 660      
435-714 1   6529 T-MOBILE USA, INC. 660      
435-714 2   6529 T-MOBILE USA, INC. 660      
435-714 3   6529 T-MOBILE USA, INC. 660   2011-03-11   
435-714 4   6529 T-MOBILE USA, INC. 660   2011-03-11   
435-714 5   5727 FIRSTDIGITAL TELECOM, LLC - UT 660   2012-01-21   
435-714 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 660   2012-03-29   
435-714 7   871E ONVOY, LLC - UT 660   2011-10-14   
435-714 8   6529 T-MOBILE USA, INC. 660   2011-03-21   
435-714 9   5562 METROPCS, INC. 660      
435-729 A SLKCUTJC4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 660      
435-729 0   6010 NEW CINGULAR WIRELESS PCS, LLC 660      
435-729 1   5727 FIRSTDIGITAL TELECOM, LLC - UT 660   2012-01-06   
435-729 2   5727 FIRSTDIGITAL TELECOM, LLC - UT 660   2012-01-06   
435-729 3   5727 FIRSTDIGITAL TELECOM, LLC - UT 660   2012-01-06   
435-729 4   5727 FIRSTDIGITAL TELECOM, LLC - UT 660   2012-01-06   
435-729 5   5727 FIRSTDIGITAL TELECOM, LLC - UT 660   2012-01-06   
435-729 6   5727 FIRSTDIGITAL TELECOM, LLC - UT 660   2012-01-06   
435-729 7   871E ONVOY, LLC - UT 660   2006-11-10   
435-729 8   5727 FIRSTDIGITAL TELECOM, LLC - UT 660   2012-01-06   
435-729 9   6010 NEW CINGULAR WIRELESS PCS, LLC 660      
435-731 A DRPRUTKJ0MD  6529 T-MOBILE USA, INC. 660      
435-731 0   6529 T-MOBILE USA, INC. 660      
435-731 1   6529 T-MOBILE USA, INC. 660   2012-04-16   
435-731 2   6529 T-MOBILE USA, INC. 660   2012-04-16   
435-731 3   6529 T-MOBILE USA, INC. 660   2012-04-16   
435-731 4   117F BANDWIDTH.COM CLEC, LLC - UT 660   2014-05-12   
435-731 5   871E ONVOY, LLC - UT 660   2014-09-28   
435-731 6   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2024-07-06   
435-731 7   6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2013-10-31   
435-731 8   318J COMCAST IP PHONE, LLC 660   2014-03-16   

<< 1 2 3 >>

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.