--- title: "Area code 369: California, United States" url: "https://lookvalid.com/area-code/369.md" canonical_url: "https://lookvalid.com/area-code/369" last_updated: "2026-10-23" type: "reference" summary: "Area code 369 serves California, United States. Number formats, numbering rules, a live phone validator and the other codes in California." --- # Area code 369: California, United States Area code 369 serves California, United States. Number formats, numbering rules, a live phone validator and the other codes in California. NANPA lists 50 central office codes (prefixes) in use in area code 369, held by 13 holders across 32 rate centers. New Cingular Wireless PCS holds the most prefixes, 11 (22%). 96% of the prefixes are pooled, which means their thousands-blocks can belong to different companies. The FCC unwanted-call data has 192 complaints on file for 165 numbers in 369, most often filed as "Unwanted Calls". These are consumer reports, not findings. ## Facts - In service since: 2023-02-01 - Time zone: Pacific (P) - Assigned overlays: 707 (1959-01-01) - Prefixes in use: 50 - Pooled prefixes: 48 (96%) - Rate centers: 32 - Companies holding prefixes: 13 - Assignment dates on file: 2023-05-04 to 2026-05-15 (50 prefixes) - ZIP codes in its places: 42 ## Rate centers | Rate center | Prefixes | Share | | --- | --- | --- | | SANTA ROSA | 10 | 20% | | FRFLD-SUIS | 3 | 6% | | BENICIA | 2 | 4% | | DIXON | 2 | 4% | | EUREKA | 2 | 4% | | HEALDSBURG | 2 | 4% | | LOWER LAKE | 2 | 4% | | MIRANDA | 2 | 4% | | 24 other rate centers | 25 | 50% | ## Carriers | Holder | Prefixes | Share | | --- | --- | --- | | New Cingular Wireless PCS | 11 | 22% | | T-Mobile USA | 9 | 18% | | Commio | 7 | 14% | | Onvoy | 7 | 14% | | Wide Voice | 4 | 8% | | Verizon Wireless | 3 | 6% | | 7 other carriers | 9 | 18% | A prefix holder is the company a code was assigned to, not necessarily a number's current carrier, because numbers can be ported to another company. ## History - 1959-01-01: Area code 707, named as the parent of 369 in the NANPA report, was in service. - 2023-02-01: Area code 369 went into service. ## Nearest area codes The area codes closest to 369, measured between the centers of the ZIP code places they serve, are 415 (about 73 miles), 628 (about 73 miles), 916 (about 77 miles), 530 (about 92 miles) and 279 (about 93 miles). ## ZIP codes 42 ZIP codes fall in places that have a rate center in this area code. The places with the most are Santa Rosa, CA (8 ZIP codes), Vallejo, CA (4 ZIP codes) and Eureka, CA (3 ZIP codes). A ZIP code and an area code are unrelated systems, so a ZIP code can sit in more than one area code and an area code spans many ZIP codes. ## Complaints on file 192 complaints for 165 numbers. Numbers whose latest complaint falls in each year: - 2023: 0 - 2024: 5 - 2025: 7 ## Questions ### Where is area code 369? NANPA assigns area code 369 to California, United States. ### In which state does area code 369 sit? California. 369 is one of 41 area codes the NANPA table assigns to the state. ### Which places does area code 369 cover? The places with the most ZIP codes among the rate centers in 369 are Santa Rosa, CA, Vallejo, CA and Eureka, CA. The rate center list on this page shows all of them. ### Who owns area code 369? NANPA assigns area codes. Within 369, New Cingular Wireless PCS holds the most prefixes, 11 prefixes or 22%. ### Which time zone does 369 use? The NANPA NPA report lists the time zone for 369 as Pacific (P). ### What year did 369 enter service? The NANPA NPA report gives an in-service date of 2023-02-01, so 369 has been in use since 2023. ### Does area code 369 have an overlay? Yes. 707 (in service 1959-01-01) shares the same area with 369, so numbers from all of them are local to each other. ### Which area codes are nearest to 369? The area codes closest to 369, measured between the centers of the ZIP code places they serve, are 415 (about 73 miles), 628 (about 73 miles), 916 (about 77 miles), 530 (about 92 miles) and 279 (about 93 miles). ### How many prefixes does area code 369 have? NANPA's report dated 2026-10-17 lists 50 prefixes in service in 369, spread over 32 rate centers and 13 holders. ### Are there complaints about 369 numbers? The FCC data on file has 192 complaints for 165 numbers in 369. They are unverified consumer reports. A number with no complaints on file is not proven safe. Sources: NANPA central office code report dated 2026-10-17; NANPA NPA report dated 2026-10-18; FCC unwanted-call complaints, data fetched 2026-10-17; ZIP code places from GeoNames (CC BY 4.0).