The 369 area code covers the same area as 707, including Santa Rosa, Fairfield and 68 more places in California.
Area code 369 is in California, on Pacific Time. In the 369 area, phone numbers are given out most in Sonoma County, then Solano and Humboldt counties. It has been in service since February 1, 2023. 707 covers the same area, so two neighbours can have different area codes.
- Where
- 8 counties in California, mostly Sonoma County, Solano County and Humboldt County
- Time zone
- Pacific Time
- In service since
- February 1, 2023
- Shares its area with
- 707 (since 1959)
- Prefixes in use
- 51
- How to dial
- Local calls need 1, then the area code, then the number: 1-369-555-0142.
Find out who called you from a 369 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (369) number is on today, use our free carrier lookup.
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Santa Rosa holds 20% of the phone prefixes in area code 369.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 51 prefixes in use shows where 369 numbers are actually given out.
- Santa Rosa10 prefixes, 20%
- Fairfield3 prefixes, 6%
- Lower Lake3 prefixes, 6%
- Dixon2 prefixes, 4%
- Miranda2 prefixes, 4%
- Healdsburg2 prefixes, 4%
- Sonoma2 prefixes, 4%
- Benicia2 prefixes, 4%
Also served: Benicia, Sonoma, Saint Helena and Lakeport and 58 smaller places.
AT&T Mobility holds the most phone number prefixes in area code 369: 11 of 51.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 51 prefixes in use in 369 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| AT&T MobilityMobile network | 11 | 22% |
| T-MobileMobile network | 9 | 18% |
| Wide Voice | 4 | 8% |
| Shelcomm | 2 | 4% |
| Boost MobileMobile phone service | 1 | 2% |
| Metro by T-MobileT-Mobile's prepaid brand | 1 | 2% |
| 6 other carriers | 23 | 45% |
96% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
369 started in 2023 as an overlay on 707, and its ground has not changed since.
2023
369 starts on February 1, 2023, as an overlay on 707: new numbers on the same ground.
A 369 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 369 are 530, 916 and 415.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
California has 40 other area codes.
These are the questions people ask most about area code 369.
Where is area code 369?
369 covers Santa Rosa, Fairfield, Vallejo and Napa and 66 more places in California. In the 369 area, phone numbers are given out most in Sonoma County, then Solano and Humboldt counties.
What state is area code 369 in?
California. 369 is a California area code on Pacific Time.
What cities use area code 369?
The places holding the most 369 prefixes are Santa Rosa, Fairfield, Vallejo, Napa, Vacaville, Eureka, Petaluma and Ukiah, out of 70 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 369?
No single phone company owns 369. NANPA's records show AT&T Mobility holds the most 369 prefixes, 11 of 51, followed by T-Mobile and Wide Voice. Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 369 in?
369 is on Pacific Time.
When did area code 369 start?
369 went into service on February 1, 2023, as an overlay on 707: new numbers for the same area.
Is 369 the same area as 707?
Yes. 707 (since 1959) covers the same ground as 369. Nobody's number changed when it was added; new lines simply get whichever code has numbers left, so two neighbours can have different codes.
How do I dial a 369 number?
Local calls need 1, then the area code, then the number: 1-369-555-0142.
Is 369 a toll-free number?
No. 369 is a regular area code for Santa Rosa and Fairfield in California, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 369?
The closest are 530/837 (Chico, California), 916/279 (Sacramento, California), 415/628 (San Francisco, California) and 925 (Walnut Creek, California), measured between the centres of each area.
Who called me from a 369 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 369 a scam?
369 is a real California area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.