Area code 530 – California
530 has served California since 1997, split from 916. All but a handful of its 786 number blocks are allocated (782 of 786), so it is effectively exhausted. AT&T is the largest holder with 35.9% of blocks, ahead of Other CLEC / VoIP at 16.2%. It shares its geography with overlay codes 837, so local calls take all ten digits. 821 FTC complaints named a 530 caller ID in the 33 days to 30 October 2026, putting it 92nd of 422 codes with five or more complaints.
- State
- California
- In service since
- 1997
- Time zone
- Pacific
- Shares area with
- 837
Who holds 530 number blocks
Share of the 782 assigned NXX blocks (99.5% of the 786 possible), across 56 carriers. This is share of number blocks, not of subscribers.
- AT&T35.9%
- Other CLEC / VoIP13.8%
- T-Mobile8.6%
- Onvoy8.4%
- Verizon7.9%
- Lumen6.6%
- Frontier5.8%
- Bandwidth5.5%
- TPx2%
- Charter1.5%
- Comcast1%
- Peerless0.9%
- American Messaging0.8%
- Telnyx0.5%
- Dish0.4%
- Vonage0.1%
- Twilio0.1%
Spam complaints naming 530
FTC Do Not Call complaints where the caller ID was a 530 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 530
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 131.
Timeline
- 1997 530 goes into service, split from or overlaid on 916.
More about 530
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 530
What state is area code 530?
California. It covers the same area as 530/837.
Can I still get a 530 number?
Only from recycled stock. 782 of the 786 available blocks are already allocated, so new numbers in the area normally come from the overlay codes (530/837).
Is a call from 530 a scam?
Not by itself. 530 drew 821 FTC complaints in the 33 days to 30 October 2026, 92nd 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 530 numbers?
AT&T holds the largest share of assigned number blocks at 35.9%. 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 530?
NANPA records the local dialing plan for 530 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.