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.

Folsom, CA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
916-337 8 SCRMCA01GT1  6010 NEW CINGULAR WIRELESS PCS, LLC 726      
916-337 9 SCRMCA01GT1  6010 NEW CINGULAR WIRELESS PCS, LLC 726   2005-03-06   
916-350 A SCRMCA04DS1  7421 AT&T - LOCAL 726      
916-350 0 WSCRCAAHNMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 726   2010-02-15   
916-350 1 WSCRCAAHNMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 726   2010-02-15   
916-350 2 SCRMCA04DS1  7421 AT&T - LOCAL 726      
916-350 3 SCRMCA04DS1  7421 AT&T - LOCAL 726      
916-350 4 SCRMCA01XSY  649C ONVOY, LLC - CA 726   2008-10-19   
916-350 5 SCRMCA01XQY  9262 UTILITY TELECOM GROUP, LLC - CA 726   2005-04-26   
916-350 6 SCRMCA04DS1  7421 AT&T - LOCAL 726      
916-350 7 SCRMCA04DS1  7421 AT&T - LOCAL 726      
916-350 8 SCRMCA04DS1  7421 AT&T - LOCAL 726      
916-350 9 SCRMCA04DS1  7421 AT&T - LOCAL 726      
916-351 A FLSMCA12DS0  9740 PACIFIC BELL 726      
916-353 A FLSMCA12DS0  9740 PACIFIC BELL 726      
916-353 0 FLSMCA12DS0  9740 PACIFIC BELL 726      
916-353 1 FLSMCA12DS0  9740 PACIFIC BELL 726      
916-353 2 FLSMCA12DS0  9740 PACIFIC BELL 726      
916-353 3 FLSMCA12DS0  9740 PACIFIC BELL 726      
916-353 4 FLSMCA12DS0  9740 PACIFIC BELL 726      
916-353 5 FLSMCA12DS0  9740 PACIFIC BELL 726      
916-353 6 FLSMCA12DS0  9740 PACIFIC BELL 726      
916-353 7 SCRMCA01XQY  9262 UTILITY TELECOM GROUP, LLC - CA 726      
916-353 8 SCRMCA01XQY  9262 UTILITY TELECOM GROUP, LLC - CA 726      
916-353 9 SCRMCA01XQY  9262 UTILITY TELECOM GROUP, LLC - CA 726      
916-355 A FLSMCA12DS0  9740 PACIFIC BELL 726      
916-356 A WSCRCABYDS1  7128 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 726      
916-357 A FLSMCA12DS0  9740 PACIFIC BELL 726      
916-357 0 FLSMCA12DS0  9740 PACIFIC BELL 726      
916-357 1 FLSMCA12DS0  9740 PACIFIC BELL 726      
916-357 2 FLSMCA12DS0  9740 PACIFIC BELL 726      
916-357 3 FLSMCA12DS0  9740 PACIFIC BELL 726      
916-357 4 FLSMCA12DS0  9740 PACIFIC BELL 726      
916-357 5 FLSMCA12DS0  9740 PACIFIC BELL 726      
916-357 6 FLSMCA12DS0  9740 PACIFIC BELL 726      
916-357 7 WSCRCAAHPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 726   2005-05-17   
916-357 8 WSCRCAAHPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 726   2005-05-17   
916-357 9 SCRMCA01XSY  649C ONVOY, LLC - CA 726   2005-05-17   
916-358 A FLSMCA12RS0  9740 PACIFIC BELL 726      
916-358 0 WSCRCAAHNMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 726   2011-09-02   
916-358 1 FLSMCA12RS0  9740 PACIFIC BELL 726      
916-358 2 FLSMCA12RS0  9740 PACIFIC BELL 726      
916-358 3 FLSMCA13DS0  9740 PACIFIC BELL 726      
916-358 4 FLSMCA12RS0  9740 PACIFIC BELL 726      
916-358 5 FLSMCA13DS0  9740 PACIFIC BELL 726      
916-358 6   145J TERRA NOVA TELECOM INC. 726   2025-07-27   
916-358 7 WSCRCAAHPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 726   2006-11-06   
916-358 8 WSCRCAAHPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 726   2006-11-06   
916-358 9 SCRMCA0111Z  318J COMCAST IP PHONE, LLC 726   2010-10-25   
916-365 A SCRMCA0121Z  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 726      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 >>

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.