California, United States
Pacific Time
10:23 PM
Area Code
310
State / Province
California
Country
United States
Time Zone
Pacific Time
Area code 310 covers 16 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:+13105550100">+13105550100</a><a href="tel:+13105550199">+13105550199</a>Look up which exchange in California a specific 310 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
787 active prefixes in this area code, assigned as 4,327 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 4,327
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 310-200 | A | Compton: Gardena DA | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | COMMERCE | 730 | — | — |
| 310-201 | A | Beverly Hills | Landline | PACIFIC BELL (9740) | WEST LOS ANGELES CENTURY CITY | 730 | — | — |
| 310-202 | A | Culver City | Landline | PACIFIC BELL (9740) | CULVER CITY | 730 | — | — |
| 310-203 | A | Beverly Hills | Landline | PACIFIC BELL (9740) | WEST LOS ANGELES CENTURY CITY | 730 | — | — |
| 310-204 | A | Culver City | Landline | PACIFIC BELL (9740) | CULVER CITY | 730 | — | — |
| 310-205 | A | Beverly Hills | Landline | PACIFIC BELL (9740) | BEVERLY HILLS | 730 | — | — |
| 310-206 | A | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-207 | A | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES BUNDY WEST | 730 | — | — |
| 310-208 | 0 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-208 | 1 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-208 | 2 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-208 | 3 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-208 | 4 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-208 | 5 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-208 | 6 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-208 | 7 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-208 | 8 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-208 | 9 | West Los Angeles | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGBGT3 | 730 | — | — |
| 310-208 | A | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-209 | 0 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-209 | 1 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-209 | 2 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-209 | 3 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-209 | 4 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-209 | 5 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-209 | 6 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-209 | 7 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-209 | 8 | West Los Angeles | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 310-209 | 9 | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-209 | A | West Los Angeles | Landline | FRONTIER CALIFORNIA INC. (2319) | WEST LOS ANGELES UNIVERSITY | 730 | — | — |
| 310-210 | A | West Los Angeles | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | COMMERCE | 730 | — | — |
| 310-212 | A | Torrance | Landline | PACIFIC BELL (9740) | TORRANCE | 730 | — | — |
| 310-213 | 0 | Compton: Gardena DA | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-213 | 1 | Compton: Gardena DA | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-213 | 2 | Compton: Gardena DA | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-213 | 3 | Compton: Gardena DA | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-213 | 4 | Compton: Gardena DA | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-213 | 5 | Compton: Gardena DA | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-213 | 6 | Compton: Gardena DA | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-213 | 7 | Compton: Gardena DA | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-213 | 8 | Compton: Gardena DA | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-213 | 9 | Compton: Gardena DA | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-213 | A | Compton: Gardena DA | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-214 | A | Redondo | Landline | FRONTIER CALIFORNIA INC. (2319) | REDONDO BEACH EL NIDO | 730 | — | — |
| 310-215 | A | Inglewood | Landline | PACIFIC BELL (9740) | LOS ANGELES AIRPORT | 730 | — | — |
| 310-216 | 0 | Inglewood | Landline | PACIFIC BELL (9740) | LOS ANGELES AIRPORT | 730 | — | — |
| 310-216 | 1 | Inglewood | Landline | PACIFIC BELL (9740) | LOS ANGELES AIRPORT | 730 | — | — |
| 310-216 | 2 | Inglewood | Landline | PACIFIC BELL (9740) | LOS ANGELES AIRPORT | 730 | — | — |
| 310-216 | 3 | Inglewood | Landline | PACIFIC BELL (9740) | LOS ANGELES AIRPORT | 730 | — | — |
| 310-216 | 4 | Inglewood | Landline | PACIFIC BELL (9740) | LOS ANGELES AIRPORT | 730 | — | — |
| 310-216 | 5 | Inglewood | Landline | PACIFIC BELL (9740) | LOS ANGELES AIRPORT | 730 | — | — |
| 310-216 | 6 | Inglewood | Landline | PACIFIC BELL (9740) | LOS ANGELES AIRPORT | 730 | — | — |
| 310-216 | 7 | Inglewood | Landline | PACIFIC BELL (9740) | LOS ANGELES AIRPORT | 730 | — | — |
| 310-216 | 8 | Inglewood | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-216 | 9 | Inglewood | Landline | PACIFIC BELL (9740) | LOS ANGELES AIRPORT | 730 | — | — |
| 310-216 | A | Inglewood | Landline | PACIFIC BELL (9740) | LOS ANGELES AIRPORT | 730 | — | — |
| 310-217 | A | Compton: Gardena DA | Landline | PACIFIC BELL (9740) | GARDENA | 730 | — | — |
| 310-218 | 0 | Torrance | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 310-218 | 1 | Torrance | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 310-218 | 2 | Torrance | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | BLTNCAADGMD | 730 | — | — |
| 310-218 | 3 | Torrance | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-218 | 4 | Torrance | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | IRVNCASM1MD | 730 | — | — |
| 310-218 | 5 | Torrance | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 310-218 | 6 | Torrance | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | COMMERCE | 730 | — | — |
| 310-218 | 7 | Torrance | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-218 | 8 | Torrance | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-218 | 9 | Torrance | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-218 | A | Torrance | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 310-219 | 0 | Hawthorne | Landline | PACIFIC BELL (9740) | HAWTHORNE | 730 | — | — |
| 310-219 | 1 | Hawthorne | Landline | PACIFIC BELL (9740) | HAWTHORNE | 730 | — | — |
| 310-219 | 2 | Hawthorne | Landline | PACIFIC BELL (9740) | HAWTHORNE | 730 | — | — |
| 310-219 | 3 | Hawthorne | Landline | PACIFIC BELL (9740) | HAWTHORNE | 730 | — | — |
| 310-219 | 4 | Hawthorne | Landline | PACIFIC BELL (9740) | HAWTHORNE | 730 | — | — |
| 310-219 | 5 | Hawthorne | Landline | PACIFIC BELL (9740) | HAWTHORNE | 730 | — | — |
| 310-219 | 6 | Hawthorne | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 310-219 | 7 | Hawthorne | Landline | PACIFIC BELL (9740) | HAWTHORNE | 730 | — | — |
| 310-219 | 8 | Hawthorne | Landline | PACIFIC BELL (9740) | HAWTHORNE | 730 | — | — |
| 310-219 | 9 | Hawthorne | Landline | PACIFIC BELL (9740) | HAWTHORNE | 730 | — | — |
| 310-219 | A | Hawthorne | Landline | PACIFIC BELL (9740) | HAWTHORNE | 730 | — | — |
| 310-220 | 0 | Hawthorne | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 310-220 | 1 | Hawthorne | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-220 | 2 | Hawthorne | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | IRVNCASM1MD | 730 | — | — |
| 310-220 | 3 | Hawthorne | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 310-220 | 4 | Hawthorne | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
| 310-220 | 5 | Hawthorne | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | BLTNCAADGMD | 730 | — | — |
| 310-220 | 6 | Hawthorne | Landline or VoIP | PAETEC ITEL, LLC (829J) | ANHMCANG5MD | 730 | — | — |
| 310-220 | 7 | Hawthorne | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-220 | 8 | Hawthorne | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7139) | GRDNCA02KMD | 730 | — | — |
| 310-220 | 9 | Hawthorne | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA (6006) | BLTNCAADGMD | 730 | — | — |
| 310-220 | A | Hawthorne | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | BLOOMINGTON | 730 | — | — |
| 310-221 | 0 | San Pedro | Landline | PACIFIC BELL (9740) | SAN PEDRO 5TH ST | 730 | — | — |
| 310-221 | 1 | San Pedro | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-221 | 2 | San Pedro | Wireless | T-MOBILE USA, INC. (6529) | TRNECAGB7MD | 730 | — | — |
| 310-221 | 3 | San Pedro | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - CA (7139) | LOS ANGELES | 730 | — | — |
| 310-221 | 4 | San Pedro | Landline | PACIFIC BELL (9740) | SAN PEDRO 5TH ST | 730 | — | — |
| 310-221 | 5 | San Pedro | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | IRVNCASM1MD | 730 | — | — |
| 310-221 | 6 | San Pedro | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | IRVNCASM1MD | 730 | — | — |
| 310-221 | 7 | San Pedro | Wireless | ONVOY SPECTRUM, LLC (624H) | LSANCA03GMD | 730 | — | — |
| 310-221 | 8 | San Pedro | Landline or VoIP | ONVOY, LLC - CA (649C) | LOS ANGELES | 730 | — | — |
| 310-221 | 9 | San Pedro | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - CA (8826) | LOS ANGELES | 730 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
787
Assignment Blocks
4,327
Rate Centers
18
Carriers of Record
38
| Type | Blocks | Share |
|---|---|---|
| Landline | 1,141 | 26% |
| Landline or VoIP | 1,726 | 40% |
| Wireless | 1,460 | 34% |
| Carrier | Blocks |
|---|---|
| T-MOBILE USA, INC. | 802 |
| PACIFIC BELL | 791 |
| FRONTIER CALIFORNIA INC. | 350 |
| NEW CINGULAR WIRELESS PCS, LLC | 306 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 303 |
| LEVEL 3 COMMUNICATIONS, LLC - CA | 296 |
| ONVOY, LLC - CA | 235 |
| METROPCS NETWORKS, LLC | 203 |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 179 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 129 |
| 28 other carriers | 733 |
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 |
|---|---|---|
| Compton: Gardena DA | 124 | 574 |
| Beverly Hills | 113 | 563 |
| Santa Monica: Santa Monica DA | 84 | 404 |
| West Los Angeles | 69 | 379 |
| Santa Monica: Mar Vista DA | 54 | 254 |
| Inglewood | 49 | 299 |
| Compton: Compton DA | 44 | 224 |
| Redondo | 44 | 244 |
| El Segundo | 39 | 259 |
| Culver City | 36 | 206 |
| San Pedro | 35 | 225 |
| Torrance | 33 | 243 |
| Hawthorne | 31 | 231 |
| Lomita | 14 | 64 |
| Malibu | 12 | 122 |
| Avalon | 3 | 23 |
| Lakewood | 2 | 12 |
| Los Angeles: DA 14 | 1 | 1 |
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.
Area code 310 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. 310 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 310 covers 16 cities and communities in California, including Avalon, Beverly Hills, Compton, Culver City, El Segundo, and 11 more localities. 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 310 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 310 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 + 310 + 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 1 310 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 310 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +13105550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.