Area code 401 – Rhode Island
401 is one of the original area codes, in service across Rhode Island since 1947. 581 of its 786 number blocks are allocated (74%). Verizon is the largest holder with 39.2% of blocks, ahead of Other CLEC / VoIP at 15.5%. FTC complaints naming a 401 caller ID totalled 562 in the 33 days to 30 October 2026 (190th of 422 ranked codes).
- State
- Rhode Island
- In service since
- 1947
- Time zone
- Eastern
- Shares area with
- No overlay
Who holds 401 number blocks
Share of the 581 assigned NXX blocks (73.9% of the 786 possible), across 39 carriers. This is share of number blocks, not of subscribers.
- Verizon39.2%
- T-Mobile12.2%
- Windstream11.2%
- AT&T10.8%
- Comcast6%
- Onvoy5.7%
- Lumen5.7%
- Other CLEC / VoIP3.8%
- Bandwidth2.2%
- Telnyx0.5%
- Peerless0.5%
- Spok0.5%
- Charter0.5%
- Dish0.3%
- Vonage0.2%
- TPx0.2%
- American Messaging0.2%
- Twilio0.2%
Spam complaints naming 401
FTC Do Not Call complaints where the caller ID was a 401 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 401
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 25.
Timeline
- 1947 401 assigned in the original North American Numbering Plan.
More about 401
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 401
What state is area code 401?
Rhode Island.
Is a call from 401 a scam?
Not by itself. 401 drew 562 FTC complaints in the 33 days to 30 October 2026, 190th 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 401 numbers?
Verizon holds the largest share of assigned number blocks at 39.2%. 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 401?
No. NANPA records 401 as 7-digit dialing for local calls.
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: “7D”. Reviewed by the data desk. Spotted an error? Request a correction.