Area code
369
369 is a United States area code. Under the North American Numbering Plan it belongs to California, which has 41 area codes in total.
Validate a number in 369
Paste a full number and the tool checks it against the numbering plan. It returns the standard formats, the line type the plan assigns and the area code region.
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Area code 369 at a glance
NANPA lists 50 central office codes (prefixes) in use in area code 369, held by 13 holders across 32 rate centers.
| Fact | Value |
|---|---|
| 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 in area code 369
| 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% |
Who holds the prefixes in 369
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.
| 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. Find which carrier a number is on, or browse the prefix holders.
History of area code 369
- 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.
Area codes nearest to 369
Distance is measured between the centers of the ZIP code places each area code serves, so it is a rough guide.
Overlay codes in the same area
ZIP codes in area code 369
42 ZIP codes fall in places that have a rate center in this area code.
| Place | ZIP codes |
|---|---|
| Santa Rosa, CA | 8 |
| Vallejo, CA | 4 |
| Eureka, CA | 3 |
A ZIP code and an area code are unrelated systems. A ZIP code can sit in more than one area code, and an area code spans many ZIP codes.
Complaints on file for 369 numbers
192 FCC complaints are on file for 165 numbers in 369, most often filed as "Unwanted Calls". These are unverified consumer reports.
| Year of latest complaint | Numbers |
|---|---|
| 2023 | 0 |
| 2024 | 5 |
| 2025 | 7 |
Other area codes in California
California is one state with 41 area codes in the NANPA table. 369 is one of them.
- 209
- 213
- 279
- 310
- 323
- 341
- 350
- 357
- 408
- 415
- 424
- 442
- 510
- 530
- 559
- 562
- 619
- 626
- 628
- 650
- 657
- 661
- 669
- 707
- 714
- 738
- 747
- 760
- 805
- 818
- 820
- 831
- 837
- 840
- 858
- 909
- 916
- 925
- 949
- 951
Next to 369 in the numbering table
These are the codes just before and after 369 when all are sorted by number. They are neighbours on the list, not necessarily on the map.
What the area code does and does not tell you
A number that starts with 369 was first assigned in California. That is a fact about where the number began, and it is a useful hint when you check a form entry, for example a billing address in California next to a 369 phone number.
It does not show where the person is today. A number stays with its owner after a move or a change of provider (number portability), and mobile numbers travel with the handset. The area code also cannot tell you whether the line is active, who the carrier is, or whether the number is mobile or fixed: the plan shares those ranges. Read more about the area code, the numbering plan and line type.
Check numbers in bulk with the API
| Product | Credits | Docs |
|---|---|---|
| Phone Numbering-Plan Validation | 1 credit per valid number | API docs |
| Phone Intelligence (carrier and line status) | 1 credit per check (invalid numbers outside the US and Canada are free) | Product page |
Questions about area code 369
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.
Area code assignments: North American Numbering Plan Administrator NPA report, file dated 10/17/2026, retrieved 2026-10-17. Source file. New codes are assigned several times a year. Prefixes, rate centers, holders, time zone, in-service date and overlays: NANPA central office code report dated 2026-10-17 and NPA report dated 2026-10-18. Complaints: FCC consumer complaints open data, fetched 2026-10-17. ZIP code places: Postal code places and coordinates: GeoNames (geonames.org), licensed CC BY 4.0.