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
323-301 A Los Angeles: DA 14 CA SNANCALWDS1  7262 XO CALIFORNIA, INC. 730      
323-302 A Los Angeles: DA 13 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-303 A Montebello CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-304 A Los Angeles: DA 14 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
323-305 A Los Angeles: DA 09 CA SNANCALWDS1  7262 XO CALIFORNIA, INC. 730      
323-306 A Los Angeles: DA 08 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-307 A Los Angeles: DA 05 CA LSANCA34DS1  9740 PACIFIC BELL 730      
323-308 A Los Angeles: DA 14 CA HLWDCA01DS1  9740 PACIFIC BELL 730      
323-309 A Los Angeles: DA 14 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2024-02-09   
323-310 A Los Angeles: DA 06 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2024-01-23   
323-312 A Los Angeles: DA 06 CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-313 A Montebello CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
323-314 A Montebello CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
323-315 A Los Angeles: DA 02 CA   829J PAETEC ITEL, LLC 730      
323-316 A Los Angeles: DA 03 CA   829J PAETEC ITEL, LLC 730      
323-317 A Los Angeles: DA 04 CA   829J PAETEC ITEL, LLC 730      
323-318 A Los Angeles: DA 05 CA   829J PAETEC ITEL, LLC 730      
323-319 A Los Angeles: DA 06 CA   829J PAETEC ITEL, LLC 730      
323-320 A Los Angeles: DA 02 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-321 A Los Angeles: DA 09 CA GRDNCA01DS0  9740 PACIFIC BELL 730      
323-322 A Los Angeles: DA 11 CA SHOKCA02KMD  6630 USA MOBILITY WIRELESS, INC. 730      
323-323 A Los Angeles: DA 09 CA   252F WIDE VOICE, LLC - CA 730   2025-05-30   
323-324 A Montebello CA LSANCA039MD  6906 AMERICAN MESSAGING SERVICES, LLC 730      
323-325 A Los Angeles: DA 08 CA   829J PAETEC ITEL, LLC 730      
323-326 A Los Angeles: DA 06 CA BELLCA11DS0  9740 PACIFIC BELL 730      
323-327 A Los Angeles: DA 09 CA   829J PAETEC ITEL, LLC 730      
323-328 A Los Angeles: DA 11 CA   829J PAETEC ITEL, LLC 730      
323-329 A Los Angeles: DA 12 CA   829J PAETEC ITEL, LLC 730      
323-330 A Los Angeles: DA 13 CA   829J PAETEC ITEL, LLC 730      
323-331 A Los Angeles: DA 02 CA IRVECAEIDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
323-332 A Los Angeles: DA 04 CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-333 A Los Angeles: DA 14 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
323-334 A Los Angeles: DA 11 CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-335 A Los Angeles: DA 02 CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-336 A Los Angeles: DA 09 CA IRVECAEIDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
323-337 A Los Angeles: DA 14 CA   829J PAETEC ITEL, LLC 730      
323-338 A Los Angeles: DA 02 CA IRVECAEIDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
323-339 A Los Angeles: DA 03 CA LSANCA039MD  9748 AMERICAN MESSAGING SERVICES, LLC 730      
323-340 A Los Angeles: DA 03 CA LSANCA56DS0  9740 PACIFIC BELL 730      
323-341 A Los Angeles: DA 03 CA LSANCA56DS0  9740 PACIFIC BELL 730      
323-342 A Los Angeles: DA 04 CA LSANCA23DS0  9740 PACIFIC BELL 730      
323-343 A Los Angeles: DA 04 CA LSANCA23DS0  9740 PACIFIC BELL 730      
323-344 A Los Angeles: DA 03 CA LSANCA56DS0  9740 PACIFIC BELL 730      
323-345 A Los Angeles: DA 02 CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-346 A Montebello CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-347 A Los Angeles: DA 12 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-348 A Los Angeles: DA 12 CA ONTRCAFXDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 730      
323-349 A Los Angeles: DA 03 CA LSANCA56DS0  9740 PACIFIC BELL 730      
323-350 A Los Angeles: DA 04 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
323-351 A Los Angeles: DA 06 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-352 A Los Angeles: DA 04 CA LSANCA23DS0  9740 PACIFIC BELL 730      
323-353 A Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-354 A Los Angeles: DA 05 CA ONTRCAFXDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 730      
323-355 A Los Angeles: DA 03 CA SHOKCA02KMD  6630 USA MOBILITY WIRELESS, INC. 730      
323-356 A Los Angeles: DA 14 CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
323-357 A Los Angeles: DA 06 CA SGATCA01DS0  9740 PACIFIC BELL 730      
323-358 A Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-359 A Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-360 A Los Angeles: DA 05 CA LSANCA03DS7  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-361 A Los Angeles: DA 02 CA LSANCA12DS0  9740 PACIFIC BELL 730      
323-362 A Los Angeles: DA 05 CA GRDNCA02KMD  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-363 A Los Angeles: DA 14 CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
323-364 A Los Angeles: DA 06 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-365 A Montebello CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
323-366 A Los Angeles: DA 14 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-367 A Los Angeles: DA 03 CA SHOKCA02KMD  6630 USA MOBILITY WIRELESS, INC. 730      
323-368 A Los Angeles: DA 08 CA LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
323-369 A Los Angeles: DA 09 CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
323-370 A Los Angeles: DA 13 CA LSANCA08DS1  9740 PACIFIC BELL 730      
323-371 A Los Angeles: DA 14 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
323-372 A Los Angeles: DA 14 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-373 A Los Angeles: DA 11 CA LSANCA38DS0  9740 PACIFIC BELL 730      
323-374 A Los Angeles: DA 06 CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-375 A Los Angeles: DA 02 CA LSANCARCD3S  649C ONVOY, LLC - CA 730      
323-376 A Los Angeles: DA 14 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
323-377 A Los Angeles: DA 14 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-02-09   
323-378 A Los Angeles: DA 14 CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-379 A Los Angeles: DA 04 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
323-380 A Los Angeles: DA 14 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-381 A Los Angeles: DA 13 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
323-382 A Los Angeles: DA 14 CA HLWDCA01DS1  9740 PACIFIC BELL 730      
323-383 A Los Angeles: DA 06 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-384 A Los Angeles: DA 03 CA LSANCA56DS0  9740 PACIFIC BELL 730      
323-385 A Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-386 A Los Angeles: DA 11 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-387 A Los Angeles: DA 14 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
323-388 A Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
323-389 A Los Angeles: DA 12 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-390 A Los Angeles: DA 11 CA LSANCARCDSZ  7894 NORTH COUNTY COMMUNICATION CORPORATION - CA 730      
323-391 A Los Angeles: DA 14 CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-392 A Los Angeles: DA 06 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-393 A Los Angeles: DA 09 CA LSANCARCY5X  515J IP HORIZON LLC 730      
323-394 A Los Angeles: DA 14 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
323-395 A Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
323-396 A Los Angeles: DA 14 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-397 A Los Angeles: DA 14 CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
323-398 A Los Angeles: DA 03 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-399 A Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-400 A Montebello CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
323-401 A Los Angeles: DA 14 CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      

<< 1 2 3 4 5 6 7 8 >>

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.