Area code
Area code 951 — Riverside, CA
California · in service since July 17, 2004
Area code 951 covers Riverside, CA. It was created from area code 909 on July 17, 2004 and no other code overlays it.
Local time in Riverside
Spam reports from Sep 23 – Oct 22, 2026
Average #133 of 461 codes
626 FTC complaints
Consumer reports, not verified by the FTC.
See the reports- Time zonePacific Time
- Local calls1 + 10 digits
- Prefixes710 assigned
- Runs out~4Q 2031
- Unwanted call?Block & report
Spam call reports about 951 numbers
Complaints by week
Sep 11 – Oct 22, 2026Show as table
| Week starting | Complaints |
|---|---|
| Sep 7 (3 days) | 20 |
| Sep 14 | 134 |
| Sep 21 | 153 |
| Sep 28 | 114 |
| Oct 5 | 174 |
| Oct 12 | 134 |
| Oct 19 (4 days) | 102 |
Compared with all codes
- Robocalls
- 56%all codes 75%
- Callers with the same code
- 37%all codes 35%
- Rank by complaints
- #133of 461 · middle half
- FCC complaints, Oct 2025 – Sep 2026
- 10818 about text messages
What the calls were about
Sep 11 – Oct 22, 2026
| Subject | Complaints | |
|---|---|---|
| Reducing your debt (credit cards, mortgage, student loans) | 215 26% | |
| Calls pretending to be government, businesses, or family and friends | 65 8% | |
| Dropped call or no message | 54 6% | |
| Home improvement & cleaning | 25 3% | |
| Energy, solar, & utilities | 17 2% | |
| Medical & prescriptions | 12 1% |
Where the people who complained live
Sep 11 – Oct 22, 2026
| State | Complaints | |
|---|---|---|
| California | 508 61% | |
| Florida | 38 5% | |
| New York | 24 3% | |
| Texas | 24 3% | |
| Georgia | 20 2% |
October 2026 (partial) report · most reported
Consumer reports, not verified by the FTC · source
Source: FTC Do Not Call complaints created Sep 11 – Oct 22, 2026. They are reported by consumers and are not verified by the FTC; caller ID can be spoofed (how we count).
Source: FCC Consumer Complaints data, unwanted calls filed Oct 1, 2025 – Sep 30, 2026, by caller ID; not verified by the FCC.
Area code 951 location and prefixes
| Exchange (NANPA) | Place | County | Prefixes |
|---|---|---|---|
| RIVERSIDE | Riverside | Riverside County | 148 |
| CORONA | Corona | Riverside County | 88 |
| TEMECULA | Temecula | Riverside County | 58 |
| PERRIS | Perris | Riverside County | 55 |
| MORENO | Moreno Valley | Riverside County | 52 |
| ARLINGTON | — | — | 50 |
| MURRIETA | Murrieta | Riverside County | 39 |
| HEMT HEMT | — | — | 38 |
| ELSINORE | — | — | 22 |
| SUN CITY | — | — | 22 |
Plus 11 smaller exchange areas.
Source: NANPA CO codes of Oct 23, 2026; places: U.S. Census Bureau, matched by DialWhere (how).
NANPA record
- Location
- California
- Assigned by NANPA
- April 1, 1999
- Created from
- 909
- Local dialing
- 1 + 10 digits (NANPA: 1+10D)
- NANPA planning letters
- PL-556, PL-544, PL-334, PL-215, PL-206, PL-189
Source: NANPA, NPA database of Oct 24, 2026.
Is 951 running out of numbers?
Previous forecast (October 2025): 2031, the same year.
Forecast exhaust year by edition
Source: NANPA NRUF forecast, April 2026 edition.
Who holds 951 prefixes
The five largest of 37 original holders
As listed by NANPA, not today’s carrier.
| Holder (as listed) | Prefixes | |
|---|---|---|
| T-Mobile USA, Inc. | 120 17% | |
| Verizon Wireless | 99 14% | |
| New Cingular Wireless PCS, LLC | 76 11% | |
| Pacific Bell | 75 11% | |
| Frontier California Inc. | 69 10% |
Source: NANPA CO codes of Oct 23, 2026.
Questions about area code 951
What area code is 951?
A California area code, in service since July 17, 2004.
Where is 951 area code, and what time zone is it in?
Riverside, CA; Pacific Time.
Why am I getting spam calls from 951?
626 FTC complaints from Sep 23 – Oct 22, 2026, most often about debt reduction (not verified by the FTC; caller ID can be spoofed).
Will 951 get a new area code?
NANPA forecasts exhaust in 4Q 2031; no relief planning listed.