310 area code — Compton:gardena Da, CA geographic
- State
- California
- Major area
- Compton:gardena Da
- Time zone
- Pacific
- In service since
- 1991-11-02
- Split from
- 213
- Overlay complex
- 310 / 424
- Active prefixes
- 786
- Rate centers
- 17
- Carriers
- 25
- Projected exhaust
- 1Q 2043
If a call shows area code 310, the number was issued in the Compton:gardena Da area — a code active since 1991, on Pacific time. The same territory is also served by its overlay code (310/424 complex). Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.
The code currently holds 786 working prefixes, held by 25 different carriers. Of these, 354 are pooled prefixes shared by multiple carriers. Numbers are anchored to 17 rate centers — billing localities that fix where each prefix belongs.
The current NANPA exhaust forecast for the 310/424 complex is 1Q 2043.
The code was carved out of 213 (1991). As demand grew it in turn gave rise to 562 (1997), 424 (2006).
Local calls inside 310 are dialed 1+10D.
If a 310 call asks for money or personal data, treat the displayed number as unverified: hang up and reach the organization through its published number. Numbering data locates numbers, not callers.
Largest localities in 310
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Compton:gardena Da | 124 | 213, 424, 562 |
| Beverly Hills | 113 | 424 |
| Santa Monica:santa Monica Da | 84 | 424 |
| West Los Angeles | 69 | 424 |
| Santa Monica:mar Vista Da | 54 | 424 |
| Inglewood | 49 | 424 |
| Redondo | 44 | 424 |
| Compton:compton Da | 44 | 424, 562 |
| El Segundo | 39 | 424 |
| Culver City | 36 | 424 |
FAQ
Will 310 run out of numbers?
NANPA's current forecast projects exhaust in 1Q 2043 — decades of capacity remain.
Why am I getting spam calls from 310 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 310 number does not prove the call originated there — see our guide to spotting spoofed calls.
Where is a 310 number from?
310 is assigned to Compton:gardena Da and surrounding areas of California in the Pacific time zone. The three digits after the area code (the prefix) narrow it down to a rate center.
Is 310 a toll-free number?
No. 310 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Why do 424 and 310 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 310/424 complex shares one service area, and local calls are dialed with 10 digits.