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.

Santa Clarita: Newhall-Castaic DA, CA

1 2 3 4 5 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
661-200 A NHLLCA01DS0  9740 PACIFIC BELL 730      
661-200 0 LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-200 1 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-200 2 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-200 3 SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730      
661-200 4 SIMICACNGT1  899D METROPCS NETWORKS, LLC 730      
661-200 5 BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
661-200 6 ANHMCANG2MD  4733 PAETEC COMMUNICATIONS, INC. - CA 730      
661-200 7 LSANCARCD3S  649C ONVOY, LLC - CA 730      
661-200 8 SIMICACNGT1  899D METROPCS NETWORKS, LLC 730      
661-200 9 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
661-207 A LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-207 0 LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-207 1 CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
661-207 2 LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-207 3 LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-207 4 LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-207 5 LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-207 6 LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-207 7 LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-207 8 LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-207 9 LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-210 A CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
661-210 0 SIMICACNGT1  899D METROPCS NETWORKS, LLC 730      
661-210 1   515J IP HORIZON LLC 730      
661-210 2   515J IP HORIZON LLC 730      
661-210 3 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
661-210 4   515J IP HORIZON LLC 730      
661-210 5 CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
661-210 6 CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
661-210 7 CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
661-210 8 CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
661-210 9 CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
661-219 A IRVECAEIDS2  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
661-219 0 IRVECAEIDS2  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
661-219 1 CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
661-219 2 IRVECAEIDS2  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
661-219 3 SIMICACNGT1  6529 T-MOBILE USA, INC. 730      
661-219 4 SIMICACNGT1  6529 T-MOBILE USA, INC. 730      
661-219 5 BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
661-219 6 IRVECAEIDS2  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
661-219 7 LSANCARCD3S  649C ONVOY, LLC - CA 730      
661-219 8 LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-219 9 IRVECAEIDS2  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
661-222 A NHLLCA01DS0  9740 PACIFIC BELL 730      
661-222 0 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-222 1 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-222 2 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-222 3 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-222 4 LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-222 5 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-222 6 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-222 7 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-222 8 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-222 9 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-244 A LSANCARCD3S  649C ONVOY, LLC - CA 730      
661-244 0 LSANCARCD3S  649C ONVOY, LLC - CA 730      
661-244 1 LSANCARCD3S  649C ONVOY, LLC - CA 730      
661-244 2 LSANCARCD3S  649C ONVOY, LLC - CA 730      
661-244 3 LSANCARCD3S  649C ONVOY, LLC - CA 730      
661-244 4 LSANCARCD3S  649C ONVOY, LLC - CA 730      
661-244 5 LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-244 6 LSANCARCD3S  649C ONVOY, LLC - CA 730      
661-244 7   6529 T-MOBILE USA, INC. 730      
661-244 8 LSANCARCD3S  649C ONVOY, LLC - CA 730      
661-244 9 LSANCARCD3S  649C ONVOY, LLC - CA 730      
661-253 A NHLLCA01DS0  9740 PACIFIC BELL 730      
661-254 A NHLLCA01DS0  9740 PACIFIC BELL 730      
661-255 A NHLLCA01DS0  9740 PACIFIC BELL 730      
661-257 A CSTCCA11DS0  9740 PACIFIC BELL 730      
661-259 A NHLLCA01DS0  9740 PACIFIC BELL 730      
661-260 A NHLLCA01DS0  9740 PACIFIC BELL 730      
661-284 A NHLLCA01DS0  9740 PACIFIC BELL 730      
661-286 A NHLLCA01DS0  9740 PACIFIC BELL 730      
661-286 0 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-286 1 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-286 2 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-286 3 LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-286 4 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-286 5 LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-286 6 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-286 7 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-286 8 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-286 9 NHLLCA01DS0  9740 PACIFIC BELL 730      
661-287 A NHLLCA01DS0  9740 PACIFIC BELL 730      
661-288 A NHLLCA01DS0  9740 PACIFIC BELL 730      
661-290 A NHLLCA01DS0  9740 PACIFIC BELL 730      
661-291 A NHLLCA01DS0  9740 PACIFIC BELL 730      
661-294 A CSTCCA11DS0  9740 PACIFIC BELL 730      
661-295 A CSTCCA11DS0  9740 PACIFIC BELL 730      
661-310 A LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-310 0 LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-310 1 LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-310 2 LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-310 3 LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-310 4 CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
661-310 5 CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
661-310 6 BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
661-310 7 LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-310 8 BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      

1 2 3 4 5 >>

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.