Area code 442 – California
442 has served California since 2009, split from 760. 356 of its 786 number blocks are allocated (45%). No carrier dominates: Other CLEC / VoIP 28.7%, AT&T 17.1%, T-Mobile 15.2%. It shares its geography with overlay codes 760, so local calls take all ten digits. Spam complaints are comparatively rare: 245 in the 33 days to 30 October 2026, 324th of the 422 codes with five or more complaints.
- State
- California
- In service since
- 2009
- Time zone
- Pacific
- Shares area with
- 760
Who holds 442 number blocks
Share of the 356 assigned NXX blocks (45.3% of the 786 possible), across 44 carriers. This is share of number blocks, not of subscribers.
- Other CLEC / VoIP25%
- T-Mobile18.3%
- AT&T17.1%
- Onvoy12.6%
- Verizon8.7%
- Bandwidth4.8%
- Charter3.9%
- Lumen2.5%
- Peerless1.7%
- TPx1.4%
- Telnyx1.1%
- Dish1.1%
- Vonage0.6%
- Twilio0.6%
- Frontier0.3%
- Comcast0.3%
Spam complaints naming 442
FTC Do Not Call complaints where the caller ID was a 442 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 442
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 78.
Timeline
- 2009 442 goes into service, split from or overlaid on 760.
More about 442
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 442
What state is area code 442?
California. It covers the same area as 442/760.
Is a call from 442 a scam?
Not by itself. 442 drew 245 FTC complaints in the 33 days to 30 October 2026, 324th 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 442 numbers?
Other CLEC / VoIP holds the largest share of assigned number blocks at 28.7%. 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 442?
NANPA records the local dialing plan for 442 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.