Area code 650 – California
650 has served California since 1997, split from 415. 717 of its 786 number blocks are allocated – about 91% full. AT&T is the largest holder with 50.8% of blocks, ahead of Verizon at 13.0%. FTC complaints naming a 650 caller ID totalled 663 in the 33 days to 30 October 2026 (152nd of 422 ranked codes).
- State
- California
- In service since
- 1997
- Time zone
- Pacific
- Shares area with
- No overlay
Who holds 650 number blocks
Share of the 717 assigned NXX blocks (91.2% of the 786 possible), across 36 carriers. This is share of number blocks, not of subscribers.
- AT&T50.8%
- Verizon13%
- T-Mobile10%
- Lumen7.1%
- Onvoy6.3%
- Other CLEC / VoIP4.3%
- TPx3.3%
- Bandwidth2.2%
- Spok0.6%
- American Messaging0.4%
- Comcast0.4%
- Telnyx0.4%
- Charter0.4%
- Peerless0.3%
- Twilio0.1%
- Dish0.1%
- Windstream0.1%
Spam complaints naming 650
FTC Do Not Call complaints where the caller ID was a 650 number, 28 Sep – 30 Oct 2026 (33 days). Caller IDs on spam calls are frequently spoofed, so these are complaints about the code, not calls proven to originate in it.
Rate centers in 650
NANPA allocates number blocks to rate centers and records their names abbreviated to ten characters, so these are NANPA's codes rather than place names – CHAMPAURBN is Champaign-Urbana, NWYRCYZN01 is a New York City zone. We show them unchanged instead of guessing at the full names. Showing the largest 5 of 15.
Timeline
- 1997 650 goes into service, split from or overlaid on 415.
More about 650
Separate pages for the questions that need their own answer: what time it is there, what the complaint data says, who holds the number blocks, and how the code compares with the one it shares its area with.
Frequently asked about 650
What state is area code 650?
California.
Is a call from 650 a scam?
Not by itself. 650 drew 663 FTC complaints in the 33 days to 30 October 2026, 152nd of 422 ranked codes – mid-pack or lower. Spam callers spoof caller IDs, so the only useful check is the full number.
Which carrier owns 650 numbers?
AT&T holds the largest share of assigned number blocks at 50.8%. The rest is spread across 3 other carriers. This is share of number blocks, not of subscribers – people keep their numbers when they switch carriers.
Do I need to dial 10 digits in 650?
NANPA records the local dialing plan for 650 as “1+10D”.
Sources and verification
- NANPA – NPA Database (npa_report.csv), file date 11/01/2026, retrieved Nov 1, 2026
- NANPA – CO Code Assignment Records, All States (utilized), file updated 11/01/2026, retrieved Nov 1, 2026
- FTC – Do Not Call Reported Calls Data, 25 daily files 28 Sep – 30 Oct 2026, retrieved Nov 1, 2026
NANPA dialing note for this code: “1+10D”. Reviewed by the data desk. Spotted an error? Request a correction.