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: 323 [Rate centres in NPA 323] [Dial plan for NPA 323]

Block: A

1 2 3 4 5 6 7 8 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-200 A Los Angeles: DA 12 CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-201 A Montebello CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-202 A Los Angeles: DA 13 CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-203 A Los Angeles: DA 14 CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-204 A Los Angeles: DA 06 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2025-04-05   
323-205 A Los Angeles: DA 04 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-206 A Los Angeles: DA 03 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-207 A Los Angeles: DA 08 CA   981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-208 A Los Angeles: DA 09 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-209 A Los Angeles: DA 13 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-210 A Los Angeles: DA 02 CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-212 A Los Angeles: DA 11 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-213 A Montebello CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
323-214 A Los Angeles: DA 06 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-215 A Montebello CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-216 A Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-217 A Los Angeles: DA 14 CA ONTRCAFXDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 730      
323-218 A Los Angeles: DA 13 CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2024-02-09   
323-219 A Los Angeles: DA 14 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
323-220 A Los Angeles: DA 11 CA ONTRCAFXDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 730      
323-221 A Los Angeles: DA 04 CA LSANCA23DS0  9740 PACIFIC BELL 730      
323-222 A Los Angeles: DA 04 CA LSANCA23DS0  9740 PACIFIC BELL 730      
323-223 A Los Angeles: DA 04 CA LSANCA23DS0  9740 PACIFIC BELL 730      
323-224 A Los Angeles: DA 04 CA LSANCA23DS0  9740 PACIFIC BELL 730      
323-225 A Los Angeles: DA 04 CA LSANCA23DS0  9740 PACIFIC BELL 730      
323-226 A Los Angeles: DA 04 CA LSANCA23DS0  9740 PACIFIC BELL 730      
323-227 A Los Angeles: DA 04 CA LSANCA23DS0  9740 PACIFIC BELL 730      
323-228 A Los Angeles: DA 11 CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730      
323-229 A Los Angeles: DA 14 CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
323-230 A Los Angeles: DA 08 CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-231 A Los Angeles: DA 08 CA LSANCA14DS0  9740 PACIFIC BELL 730      
323-232 A Los Angeles: DA 08 CA LSANCA14DS0  9740 PACIFIC BELL 730      
323-233 A Los Angeles: DA 08 CA LSANCA14DS0  9740 PACIFIC BELL 730      
323-234 A Los Angeles: DA 08 CA LSANCA14DS0  9740 PACIFIC BELL 730      
323-235 A Los Angeles: DA 08 CA LSANCA14DS0  9740 PACIFIC BELL 730      
323-236 A Montebello CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
323-237 A Los Angeles: DA 06 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-238 A Los Angeles: DA 08 CA LSANCA14DS0  9740 PACIFIC BELL 730      
323-239 A Los Angeles: DA 13 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-240 A Los Angeles: DA 14 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
323-241 A Los Angeles: DA 09 CA LSANCA13DS0  9740 PACIFIC BELL 730      
323-242 A Los Angeles: DA 09 CA LSANCA13DS0  9740 PACIFIC BELL 730      
323-243 A Los Angeles: DA 14 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
323-244 A Los Angeles: DA 03 CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-245 A Los Angeles: DA 02 CA GLDLCA11DS1  9740 PACIFIC BELL 730      
323-246 A Montebello CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
323-247 A Los Angeles: DA 14 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-248 A Montebello CA LSANCA35DS0  9740 PACIFIC BELL 730      
323-249 A Los Angeles: DA 06 CA SGATCA01DS0  9740 PACIFIC BELL 730      
323-250 A Los Angeles: DA 04 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-251 A Los Angeles: DA 14 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-02-09   
323-252 A Los Angeles: DA 14 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2024-02-09   
323-253 A Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-254 A Los Angeles: DA 03 CA LSANCA56DS0  9740 PACIFIC BELL 730      
323-255 A Los Angeles: DA 03 CA LSANCA56DS0  9740 PACIFIC BELL 730      
323-256 A Los Angeles: DA 03 CA LSANCA56DS0  9740 PACIFIC BELL 730      
323-257 A Los Angeles: DA 03 CA LSANCA56DS0  9740 PACIFIC BELL 730      
323-258 A Los Angeles: DA 03 CA LSANCA56DS0  9740 PACIFIC BELL 730      
323-259 A Los Angeles: DA 03 CA LSANCA56DS0  9740 PACIFIC BELL 730      
323-260 A Los Angeles: DA 05 CA LSANCA34DS1  9740 PACIFIC BELL 730      
323-261 A Los Angeles: DA 05 CA LSANCA34DS1  9740 PACIFIC BELL 730      
323-262 A Los Angeles: DA 05 CA LSANCA34DS1  9740 PACIFIC BELL 730      
323-263 A Los Angeles: DA 05 CA LSANCA34DS1  9740 PACIFIC BELL 730      
323-264 A Los Angeles: DA 05 CA LSANCA34DS0  9740 PACIFIC BELL 730      
323-265 A Los Angeles: DA 05 CA LSANCA34DS1  9740 PACIFIC BELL 730      
323-266 A Los Angeles: DA 05 CA LSANCA34DS0  9740 PACIFIC BELL 730      
323-267 A Los Angeles: DA 05 CA LSANCA34DS1  9740 PACIFIC BELL 730      
323-268 A Los Angeles: DA 05 CA LSANCA34DS1  9740 PACIFIC BELL 730      
323-269 A Los Angeles: DA 05 CA LSANCA34DS1  9740 PACIFIC BELL 730      
323-270 A Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-271 A Montebello CA LSANCA35DS0  9740 PACIFIC BELL 730      
323-272 A Los Angeles: DA 13 CA BVHLCA01DS0  9740 PACIFIC BELL 730      
323-273 A Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-274 A Los Angeles: DA 03 CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-275 A Los Angeles: DA 04 CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-276 A Los Angeles: DA 04 CA LSANCA23DS0  9740 PACIFIC BELL 730      
323-277 A Los Angeles: DA 06 CA HNPKCA01DS0  9740 PACIFIC BELL 730      
323-278 A Montebello CA LSANCA35DS1  9740 PACIFIC BELL 730      
323-279 A Los Angeles: DA 08 CA LSANCA01XSY  9748 AMERICAN MESSAGING SERVICES, LLC 730      
323-280 A Los Angeles: DA 02 CA LSANCA039MD  6906 AMERICAN MESSAGING SERVICES, LLC 730      
323-281 A Montebello CA ONTRCAXPXAY  6967 33 WIRELESS INC. 730      
323-282 A Los Angeles: DA 06 CA LSANCA03DS7  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-283 A Los Angeles: DA 04 CA ALHBCA01DS0  9740 PACIFIC BELL 730      
323-284 A Los Angeles: DA 02 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-285 A Los Angeles: DA 08 CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-286 A Los Angeles: DA 03 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
323-287 A Los Angeles: DA 04 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-288 A Los Angeles: DA 03 CA SHOKCA02KMD  6630 USA MOBILITY WIRELESS, INC. 730      
323-289 A Los Angeles: DA 12 CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730      
323-290 A Los Angeles: DA 12 CA LSANCA15DS0  9740 PACIFIC BELL 730      
323-291 A Los Angeles: DA 12 CA LSANCA15DS0  9740 PACIFIC BELL 730      
323-292 A Los Angeles: DA 12 CA LSANCA15DS0  9740 PACIFIC BELL 730      
323-293 A Los Angeles: DA 12 CA LSANCA15DS0  9740 PACIFIC BELL 730      
323-294 A Los Angeles: DA 12 CA LSANCA15DS0  9740 PACIFIC BELL 730      
323-295 A Los Angeles: DA 12 CA LSANCA15DS0  9740 PACIFIC BELL 730      
323-296 A Los Angeles: DA 12 CA LSANCA15DS0  9740 PACIFIC BELL 730      
323-297 A Los Angeles: DA 13 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-298 A Los Angeles: DA 12 CA LSANCA15DS0  9740 PACIFIC BELL 730      
323-299 A Los Angeles: DA 12 CA LSANCA15DS0  9740 PACIFIC BELL 730      
323-300 A Los Angeles: DA 02 CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      

1 2 3 4 5 6 7 8 >>

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.