California, United States
Pacific Time
10:55 AM
Area Code
323
State / Province
California
Country
United States
Time Zone
Pacific Time
Area code 323 covers 2 cities and communities across California, based on telephone company rate center data.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+13235550100">+13235550100</a><a href="tel:+13235550199">+13235550199</a>Look up which exchange in California a specific 323 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
786 active prefixes in this area code, assigned as 6,025 thousands-blocks — pooling splits one prefix across several carriers, so each block is listed separately with the rate centre it is homed to, its carrier of record, and the switch that serves it.
Showing blocks 1–100 of 6,025
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 323-200 | 0 | Los Angeles: DA 12 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-200 | 1 | Los Angeles: DA 12 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-200 | 2 | Los Angeles: DA 12 | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7139) | LOS ANGELES | 730 | — | — |
| 323-200 | 3 | Los Angeles: DA 12 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-200 | 4 | Los Angeles: DA 12 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-200 | 5 | Los Angeles: DA 12 | Wireless | ONVOY SPECTRUM, LLC (624H) | LSANCA03GMD | 730 | — | — |
| 323-200 | 6 | Los Angeles: DA 12 | Landline or VoIP | METROPCS NETWORKS, LLC (899D) | TRNECAGBGT3 | 730 | — | — |
| 323-200 | 7 | Los Angeles: DA 12 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-200 | 8 | Los Angeles: DA 12 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-200 | 9 | Los Angeles: DA 12 | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 323-200 | A | Los Angeles: DA 12 | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7139) | LOS ANGELES | 730 | — | — |
| 323-201 | 0 | Montebello | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | IRVNCASM1MD | 730 | — | — |
| 323-201 | 1 | Montebello | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | COMMERCE | 730 | — | — |
| 323-201 | 2 | Montebello | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 323-201 | 3 | Montebello | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | IRVNCASM1MD | 730 | — | — |
| 323-201 | 4 | Montebello | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | IRVNCASM1MD | 730 | — | — |
| 323-201 | 5 | Montebello | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | IRVNCASM1MD | 730 | — | — |
| 323-201 | 6 | Montebello | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | IRVNCASM1MD | 730 | — | — |
| 323-201 | 7 | Montebello | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 323-201 | 8 | Montebello | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | IRVNCASM1MD | 730 | — | — |
| 323-201 | 9 | Montebello | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | IRVNCASM1MD | 730 | — | — |
| 323-201 | A | Montebello | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | IRVNCASM1MD | 730 | — | — |
| 323-202 | 0 | Los Angeles: DA 13 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-202 | 1 | Los Angeles: DA 13 | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7139) | LOS ANGELES | 730 | — | — |
| 323-202 | 2 | Los Angeles: DA 13 | Landline or VoIP | PEERLESS NETWORK OF CALIFORNIA, LLC - CA (373F) | LOS ANGELES | 730 | — | — |
| 323-202 | 3 | Los Angeles: DA 13 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-202 | 4 | Los Angeles: DA 13 | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7139) | LOS ANGELES | 730 | — | — |
| 323-202 | 5 | Los Angeles: DA 13 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-202 | 6 | Los Angeles: DA 13 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-202 | 7 | Los Angeles: DA 13 | Landline or VoIP | METROPCS NETWORKS, LLC (899D) | TRNECAGBGT3 | 730 | — | — |
| 323-202 | 8 | Los Angeles: DA 13 | Landline or VoIP | METROPCS NETWORKS, LLC (899D) | TRNECAGBGT3 | 730 | — | — |
| 323-202 | 9 | Los Angeles: DA 13 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-202 | A | Los Angeles: DA 13 | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7139) | LOS ANGELES | 730 | — | — |
| 323-203 | 0 | Los Angeles: DA 14 | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 323-203 | 1 | Los Angeles: DA 14 | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 323-203 | 2 | Los Angeles: DA 14 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-203 | 3 | Los Angeles: DA 14 | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7139) | LOS ANGELES | 730 | — | — |
| 323-203 | 4 | Los Angeles: DA 14 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-203 | 5 | Los Angeles: DA 14 | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | COMMERCE | 730 | — | — |
| 323-203 | 6 | Los Angeles: DA 14 | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | COMMERCE | 730 | — | — |
| 323-203 | 7 | Los Angeles: DA 14 | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | COMMERCE | 730 | — | — |
| 323-203 | 8 | Los Angeles: DA 14 | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | COMMERCE | 730 | — | — |
| 323-203 | 9 | Los Angeles: DA 14 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-203 | A | Los Angeles: DA 14 | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7139) | LOS ANGELES | 730 | — | — |
| 323-204 | 0 | Los Angeles: DA 06 | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 323-204 | 1 | Los Angeles: DA 06 | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | BLTNCAADGMD | 730 | — | — |
| 323-204 | 2 | Los Angeles: DA 06 | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | BLTNCAADGMD | 730 | — | — |
| 323-204 | 3 | Los Angeles: DA 06 | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 323-204 | 4 | Los Angeles: DA 06 | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 323-204 | 5 | Los Angeles: DA 06 | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | BLTNCAADGMD | 730 | — | — |
| 323-204 | 6 | Los Angeles: DA 06 | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | BLTNCAADGMD | 730 | — | — |
| 323-204 | 7 | Los Angeles: DA 06 | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | BLTNCAADGMD | 730 | — | — |
| 323-204 | 8 | Los Angeles: DA 06 | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | BLTNCAADGMD | 730 | — | — |
| 323-204 | 9 | Los Angeles: DA 06 | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 323-204 | A | Los Angeles: DA 06 | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 323-205 | 0 | Los Angeles: DA 04 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-205 | 1 | Los Angeles: DA 04 | Landline or VoIP | IP HORIZON LLC (515J) | — | 730 | — | — |
| 323-205 | 2 | Los Angeles: DA 04 | Landline or VoIP | IP HORIZON LLC (515J) | — | 730 | — | — |
| 323-205 | 3 | Los Angeles: DA 04 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-205 | 4 | Los Angeles: DA 04 | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 323-205 | 5 | Los Angeles: DA 04 | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 323-205 | 6 | Los Angeles: DA 04 | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 323-205 | 7 | Los Angeles: DA 04 | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 323-205 | 8 | Los Angeles: DA 04 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-205 | 9 | Los Angeles: DA 04 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-205 | A | Los Angeles: DA 04 | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 323-206 | 0 | Los Angeles: DA 03 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-206 | 1 | Los Angeles: DA 03 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-206 | 2 | Los Angeles: DA 03 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-206 | 3 | Los Angeles: DA 03 | Wireless | ONVOY SPECTRUM, LLC (624H) | LSANCA03GMD | 730 | — | — |
| 323-206 | 4 | Los Angeles: DA 03 | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 323-206 | 5 | Los Angeles: DA 03 | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 323-206 | 6 | Los Angeles: DA 03 | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 323-206 | 7 | Los Angeles: DA 03 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-206 | 8 | Los Angeles: DA 03 | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 323-206 | 9 | Los Angeles: DA 03 | Wireless | ONVOY SPECTRUM, LLC (624H) | LSANCA03GMD | 730 | — | — |
| 323-206 | A | Los Angeles: DA 03 | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 323-207 | 0 | Los Angeles: DA 08 | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 323-207 | 1 | Los Angeles: DA 08 | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 323-207 | 2 | Los Angeles: DA 08 | Landline or VoIP | TERRA NOVA TELECOM INC. (145J) | — | 730 | — | — |
| 323-207 | 3 | Los Angeles: DA 08 | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | COMMERCE | 730 | — | — |
| 323-207 | 4 | Los Angeles: DA 08 | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 323-207 | 5 | Los Angeles: DA 08 | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 323-207 | 6 | Los Angeles: DA 08 | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 323-207 | 7 | Los Angeles: DA 08 | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 323-207 | 8 | Los Angeles: DA 08 | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 323-207 | 9 | Los Angeles: DA 08 | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 323-207 | A | Los Angeles: DA 08 | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 323-208 | 0 | Los Angeles: DA 09 | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 323-208 | 1 | Los Angeles: DA 09 | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | COMMERCE | 730 | — | — |
| 323-208 | 2 | Los Angeles: DA 09 | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | COMMERCE | 730 | — | — |
| 323-208 | 3 | Los Angeles: DA 09 | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 323-208 | 4 | Los Angeles: DA 09 | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 323-208 | 5 | Los Angeles: DA 09 | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | COMMERCE | 730 | — | — |
| 323-208 | 6 | Los Angeles: DA 09 | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 323-208 | 7 | Los Angeles: DA 09 | Landline or VoIP | AT&T CORP. (516C) | ANHMCA01XEY | 730 | — | — |
| 323-208 | 8 | Los Angeles: DA 09 | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | SHOKCA02QMD | 730 | — | — |
| 323-208 | 9 | Los Angeles: DA 09 | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - CA (981E) | LSANCA039MD | 730 | — | — |
| 323-208 | A | Los Angeles: DA 09 | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 323-209 | 0 | Los Angeles: DA 13 | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | COMMERCE | 730 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
786
Assignment Blocks
6,025
Rate Centers
12
Carriers of Record
40
| Type | Blocks | Share |
|---|---|---|
| Landline | 687 | 11% |
| Landline or VoIP | 3,824 | 63% |
| Wireless | 1,514 | 25% |
| Carrier | Blocks |
|---|---|
| METROPCS NETWORKS, LLC | 1,210 |
| T-MOBILE USA, INC. | 961 |
| BANDWIDTH.COM CLEC, LLC - CA | 758 |
| PACIFIC BELL | 687 |
| ONVOY, LLC - CA | 517 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 255 |
| NEW CINGULAR WIRELESS PCS, LLC | 254 |
| LEVEL 3 COMMUNICATIONS, LLC - CA | 253 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 171 |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 164 |
| 30 other carriers | 795 |
Carrier of record for each block. Numbers ported to another carrier keep their original block assignment, so this is not a lookup of who serves a given number today.
| Rate Center | Prefixes | Blocks |
|---|---|---|
| Los Angeles: DA 14 | 160 | 960 |
| Montebello | 110 | 970 |
| Los Angeles: DA 06 | 80 | 610 |
| Los Angeles: DA 09 | 72 | 572 |
| Los Angeles: DA 13 | 70 | 510 |
| Los Angeles: DA 02 | 57 | 467 |
| Los Angeles: DA 03 | 56 | 456 |
| Los Angeles: DA 05 | 45 | 355 |
| Los Angeles: DA 04 | 36 | 295 |
| Los Angeles: DA 11 | 36 | 296 |
| Los Angeles: DA 08 | 32 | 262 |
| Los Angeles: DA 12 | 32 | 272 |
A rate center is the telephone exchange area a number is homed to. It sets local calling boundaries, and is not the caller's current location.
323 now shares its territory with 738. Because of this overlay, local calls in this region must be dialed with all ten digits.
Area code 323 is a North American Numbering Plan (NANP) telephone area code assigned to California, United States. It is one of 41 area codes serving California. As population and demand for phone numbers grew, the region was divided into multiple numbering plan areas to avoid exhausting the available 7-digit number pool.
Yes. 323 is an active North American Numbering Plan (NANP) area code, currently assigned to California, United States. It is safe to answer or dial calls using this area code.
Area code 323 covers 2 cities and communities in California, including Los Angeles, Montebello. This is based on telephone company rate center data — the geographic areas carriers use to determine local calling boundaries and to assign numbers when a business or individual requests a phone number in a specific city.
All numbers in the 323 area code observe Pacific Time (IANA timezone: America/Los_Angeles). Pacific Time is UTC−8 in winter (PST) and UTC−7 in summer (PDT). When placing a call to a 323 number from a different time zone, check the current local time above to avoid calling outside of business hours.
From within California, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 323 + 7-digit number for long-distance calls within North America. From outside the US or Canada, dial your country's international exit code followed by 1 323 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 323 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +13235550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.