Area code
909
909 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 909
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 909 at a glance
NANPA lists 786 central office codes (prefixes) in use in area code 909, held by 37 holders across 25 rate centers.
| Fact | Value |
|---|---|
| In service since | 1992-11-14 |
| Time zone | Pacific (P) |
| Assigned overlays | 840 (2021-02-23) |
| Prefixes in use | 786 |
| Pooled prefixes | 560 (71%) |
| Rate centers | 25 |
| Companies holding prefixes | 37 |
| Assignment dates on file | 2001-01-17 to 2025-10-09 (369 prefixes) |
| ZIP codes in its places | 56 |
Rate centers in area code 909
| Rate center | Prefixes | Share |
|---|---|---|
| ONTARIO | 124 | 16% |
| S BERNDINO | 88 | 11% |
| FONTANA | 70 | 9% |
| UPLAND | 70 | 9% |
| CHINO | 55 | 7% |
| POMONA | 51 | 6% |
| CLAREMONT | 50 | 6% |
| COLTON | 45 | 6% |
| 17 other rate centers | 233 | 30% |
Who holds the prefixes in 909
Frontier California holds the most prefixes, 156 (20%). 71% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
| Holder | Prefixes | Share |
|---|---|---|
| Frontier California | 156 | 20% |
| T-Mobile USA | 87 | 11% |
| New Cingular Wireless PCS | 75 | 10% |
| Verizon Wireless | 72 | 9% |
| Metropcs Networks | 52 | 7% |
| Bandwidth.com CLEC | 47 | 6% |
| 31 other carriers | 297 | 38% |
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 909
- 1951-01-01 Area code 714, named as the parent of 909 in the NANPA report, was in service.
- 1992-11-14 Area code 909 went into service.
- 2004-07-17 Area code 951 went into service and names 909 as its parent.
- 2021-02-23 Area code 840 went into service as an overlay in the same area as 909.
Area codes nearest to 909
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 909
56 ZIP codes fall in places that have a rate center in this area code.
| Place | ZIP codes |
|---|---|
| Riverside, CA | 17 |
| Corona, CA | 7 |
| Fontana, CA | 5 |
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 909 numbers
3,401 FCC complaints are on file for 2,605 numbers in 909, most often filed as "Unwanted Calls". These are unverified consumer reports.
| Year of latest complaint | Numbers |
|---|---|
| 2023 | 138 |
| 2024 | 148 |
| 2025 | 142 |
Other area codes in California
California is one state with 41 area codes in the NANPA table. 909 is one of them.
- 209
- 213
- 279
- 310
- 323
- 341
- 350
- 357
- 369
- 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
- 916
- 925
- 949
- 951
Next to 909 in the numbering table
These are the codes just before and after 909 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 909 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 909 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 909
Where is area code 909?
NANPA assigns area code 909 to California, United States.
In which state does area code 909 sit?
California. 909 is one of 41 area codes the NANPA table assigns to the state.
Which places does area code 909 cover?
The places with the most ZIP codes among the rate centers in 909 are Riverside, CA, Corona, CA and Fontana, CA. The rate center list on this page shows all of them.
Who owns area code 909?
NANPA assigns area codes. Within 909, Frontier California holds the most prefixes, 156 prefixes or 20%.
Which time zone does 909 use?
The NANPA NPA report lists the time zone for 909 as Pacific (P).
What year did 909 enter service?
The NANPA NPA report gives an in-service date of 1992-11-14, so 909 has been in use since 1992.
Does area code 909 have an overlay?
Yes. 840 (in service 2021-02-23) shares the same area with 909, so numbers from all of them are local to each other.
Which area codes are nearest to 909?
The area codes closest to 909, measured between the centers of the ZIP code places they serve, are 951 (about 22 miles), 626 (about 26 miles), 657 (about 26 miles), 714 (about 26 miles) and 949 (about 31 miles).
How many prefixes does area code 909 have?
NANPA's report dated 2026-10-17 lists 786 prefixes in service in 909, spread over 25 rate centers and 37 holders.
Are there complaints about 909 numbers?
The FCC data on file has 3,401 complaints for 2,605 numbers in 909. 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.