Area codes · +1
Area code 951
Area code 951 is centred on Riverside, California. We hold 6,044 allocated blocks for it across 21 rate centres, split 52% mobile, 36% landline and 12% VoIP.
The towns inside area code 951
Area code 951 is not a city code. It covers 21 separate rate centres — billing areas, each its own local calling zone. The largest of them are named in the table below.
That matters twice over. A call between two 951 numbers is not necessarily a local call, because they can sit in different rate centres. And a code this wide narrows a subscriber to a region rather than a town.
California is split across 40 area codes — 657, 707, 559, 209, 530, 951 and others. By allocated blocks 951 is the 10th largest of them, holding 3% of the California total.
Where 951 numbers are concentrated
NANPA truncates rate-centre names to ten characters and drops the spaces, which is why Hemt Snjc and Temscl Cny are shortened. Names are reproduced as recorded rather than expanded — the abbreviation is the key the block data is filed under.
| Rate centre | Blocks | Share of 951 |
|---|---|---|
| Riverside | 1,004 | 17% |
| Corona | 712 | 12% |
| Perris | 569 | 9% |
| Temecula | 501 | 8% |
| Moreno | 483 | 8% |
| Arlington | 433 | 7% |
| Murrieta | 365 | 6% |
| Hemt Hemt | 349 | 6% |
| Sun City | 193 | 3% |
| Elsinore | 192 | 3% |
| Mira Loma | 184 | 3% |
| Hemt Snjc | 169 | 3% |
| Banning | 167 | 3% |
| Woodcrest | 163 | 3% |
| Temscl Cny | 149 | 2% |
| Hemt Hmld | 119 | 2% |
| Lakeviewnu | 87 | 1% |
| Idyllwild | 68 | 1% |
| Hemt Anza | 55 | 1% |
| Hemt Sage | 53 | 1% |
| Colton | 1 | 0% |
Carriers holding the most 951 blocks
Onvoy817 blocks
T-Mobile USA, Inc.683 blocks
T-Mobile Usa, Inc.656 blocks
AT&T Wireless653 blocks
Verizon Wireless640 blocks
Bandwidth355 blocks
The largest holder, Onvoy, has 14% of the code.
These are original allocations. A number keeps its digits and its block when its subscriber moves network, so a ported 951 number still reports the carrier it started with. Closing that gap needs a live query against the routing database. How line type is derived.
Check a single 951 number, or run a whole list through the free cleaner — neither uploads anything.
Common questions
Where is area code 951?
Area code 951 is centred on Riverside, California and spans 21 rate centres, so it covers a region rather than a town.
Is a 951 number a mobile or a landline?
It can be either, and the digits do not say which. North American mobile and landline numbers share the same ranges, so the answer comes from the carrier holding the block. In 951 the split runs 52% mobile, 36% landline and 12% VoIP, so mobile is the most likely single answer.
Which carriers hold 951 numbers?
The largest holders are Onvoy, T-Mobile USA, Inc., T-Mobile Usa, Inc.. That is the carrier the block was allocated to, which is not necessarily the network a given number sits on today.
How many 951 numbers are there?
The code holds 6,044 allocated blocks in our copy of the numbering plan. A block is 1,000 or 10,000 consecutive numbers depending on how deeply it has been pooled, so 951 covers on the order of 6,044,000 possible numbers — most of which have never been issued to anyone.