National Phone Number Registry NPNR

(310)
Enter 7-digit phone number for area code 310 or the complete 10-digit phone number

Phone Prefixes for Area Code 310

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Area code Location Company / Service Provider
310-402 Beverly Hills, CA LEVEL 3 COMMUNICATIONS, LLC - CA
310-403 Santa Monica, CA SPRINT SPECTRUM L.P.
310-404 GARDENA, CA AT&T LOCAL
310-405 W ANGELES, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
310-406 REDONDO, CA FRONTIER CALIFORNIA INC.
310-407 Beverly Hills, CA PACIFIC BELL
310-408 TORRANCE, CA NEW CINGULAR WIRELESS PCS, LLC
310-409 Beverly Hills, CA O1 COMMUNICATIONS, INC. - CA
310-410 INGLEWOOD, CA PACIFIC BELL
310-412 INGLEWOOD, CA PACIFIC BELL
310-413 GARDENA, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
310-414 EL SEGUNDO, CA PACIFIC BELL
310-415 GARDENA, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
310-416 EL SEGUNDO, CA PACIFIC BELL
310-417 INGLEWOOD, CA PACIFIC BELL
310-418 GARDENA, CA NEW CINGULAR WIRELESS PCS, LLC
310-419 INGLEWOOD, CA PACIFIC BELL
310-420 Santa Monica, CA SPRINT SPECTRUM L.P.
310-421 REDONDO, CA TNCI-OP-CO - CA
310-422 Santa Monica / Mar Vista, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
310-423 Beverly Hills, CA PACIFIC BELL
310-424 Beverly Hills, CA PAETEC COMMUNICATIONS, INC. - CA
310-425 Culver City, CA XO CALIFORNIA, INC.
310-426 EL SEGUNDO, CA PACIFIC BELL
310-427 SAN PEDRO, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
310-428 Santa Monica, CA SPRINT SPECTRUM L.P.
310-429 Santa Monica / Mar Vista, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
310-430 Santa Monica, CA T-MOBILE USA, INC.
310-431 INGLEWOOD, CA NEW CINGULAR WIRELESS PCS, LLC
310-432 Beverly Hills, CA U.S. TELEPACIFIC CORP. - CA
310-433 Santa Monica / Mar Vista, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
310-434 Santa Monica, CA FRONTIER CALIFORNIA INC.
310-435 Beverly Hills, CA NEW CINGULAR WIRELESS PCS, LLC
310-436 GARDENA, CA U.S. TELEPACIFIC CORP. - CA
310-437 Santa Monica / Mar Vista, CA XO CALIFORNIA, INC.
310-438 COMPTON, CA T-MOBILE USA, INC.
310-439 Santa Monica / Mar Vista, CA FRONTIER CALIFORNIA INC.
310-440 W ANGELES, CA FRONTIER CALIFORNIA INC.
310-441 W ANGELES, CA FRONTIER CALIFORNIA INC.
310-442 W ANGELES, CA FRONTIER CALIFORNIA INC.
310-443 W ANGELES, CA FRONTIER CALIFORNIA INC.
310-444 W ANGELES, CA FRONTIER CALIFORNIA INC.
310-445 W ANGELES, CA FRONTIER CALIFORNIA INC.
310-446 W ANGELES, CA FRONTIER CALIFORNIA INC.
310-447 W ANGELES, CA FRONTIER CALIFORNIA INC.
310-448 Santa Monica / Mar Vista, CA FRONTIER CALIFORNIA INC.
310-449 Santa Monica, CA FRONTIER CALIFORNIA INC.
310-450 Santa Monica, CA FRONTIER CALIFORNIA INC.
310-451 Santa Monica, CA FRONTIER CALIFORNIA INC.
310-452 Santa Monica, CA FRONTIER CALIFORNIA INC.
310 Area Code Information
Type of code: General Purpose Code
Location: CA - US
Time zone: P
Assigned for use: Yes
Code in service: Yes
Service date: November 02, 1991
In jeopardy: No
Relief in progress: No
NPA Relief status:
Code assignable: Yes
Geographic or
non-geographic:
G
Reserved for future use: No
Planning letter(s): 347 250 IL90/08-055
Overlay code: Yes
Overlay complex: 310/424
Dialing plan Standard Permissive
Home local calls: 1+10D NA
Foreign local calls: 1+10D NA
Home toll calls: 1+10D NA
Foreign toll calls: 1+10D -
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