340 Area Code: Charlotte Amalie, St. Thomas, the U.S. Virgin Islands
Area code 340 serves Charlotte Amalie, St. Thomas and Saint Croix, the U.S. Virgin Islands in the Atlantic time zone, in service since 1997. Consumers have filed 70 unwanted-call complaints against 51 different 340 numbers, 4 of them with the FTC in the last 30 days. Look up the exact number that called you below.
Area code 340 at a glance
- State
- the U.S. Virgin Islands
- Main cities
- Charlotte Amalie, St. Thomas, Saint Croix
- Local time
- —Atlantic
- In service since
- June 1, 1997
- Local dialing
- 7 digits allowed
- Exchanges
- 4 rate centers, 58 prefixes
Sources: NANPA area code and central office code records (refreshed weekly); cities and counties matched from US Census Bureau and USGS place names.
Reported 340 numbers
No single 340 number has enough complaints yet for a full report page, so none are listed. Look up the exact number that called you: the lookup works on every US number, whether or not it has complaint history.
Is it getting worse?
FCC complaints about 340 numbers peaked in 2017 (16); the FTC's daily Do Not Call data has carried most of the volume since mid-2026.
FCC complaints per year
Years shown as '15 to '26; the current year is partial.
Carriers operating in 340
NANPA has assigned 58 340 prefixes (NPA-NXX central-office codes) across 4 rate centers: 59% to wireless carriers, 12% to landline and VoIP operators. The newest assignment was 2023-06-09. The carrier holding a prefix is who the number was issued through. It says nothing about who is calling, since caller ID is routinely spoofed.
| Carrier | Type | Prefixes | Rate centers | Newest assignment |
|---|---|---|---|---|
| Virgin Islands Tel. CORP. dba Innovative Telephone | Unclassified | 17(29%) | 4 | 2006-10-26 |
| Liberty Mobile Usvi INC. | Wireless | 16(28%) | 1 | 2023-01-13 |
| Vitelcom Cellular, INC. | Wireless | 8(14%) | 2 | 2017-09-09 |
| T-Mobile USA | Wireless | 6(10%) | 2 | 2021-02-01 |
| Lumen Technolgies St. Croix, LLC | Competitive / VoIP (CLEC) | 4(7%) | 4 | 2018-01-09 |
| Metro by T-Mobile (MetroPCS) | Wireless | 2(3%) | 2 | 2007-07-23 |
| Comcast (Xfinity Voice) | Competitive / VoIP (CLEC) | 1(2%) | 1 | 2023-06-09 |
| Gigsky Mobile, LLC | Wireless | 1(2%) | 1 | 2015-04-27 |
| AT&T Mobility (New Cingular Wireless PCS) | Wireless | 1(2%) | 1 | 2022-02-18 |
| Telnyx LLC | Competitive / VoIP (CLEC) | 1(2%) | 1 | 2021-07-20 |
| Windkeeper Communications, INC. | Competitive / VoIP (CLEC) | 1(2%) | 1 | — |
Largest rate centers (exchanges) by prefixes: Charlotte Amalie, St. Thomas (42), Saint Croix (7). Source: NANPA Central Office Code Utilized Assignments (public, refreshed weekly).
What to do about calls from 340 numbers
Before you call back
- Impostor (government, business, family) is the top named complaint here. Hang up and call the agency, bank or relative back on a number you already know. Government agencies don't demand payment by gift card, wire transfer or crypto. Read about Social Security impostor calls and fake bank fraud calls.
- Look up the full number above. A missed call from 340 with no voicemail is usually a robocall; anyone who needs you will leave a message.
- Block repeat callers: iPhone, Android, or your carrier's free filter (Verizon, AT&T, T-Mobile).
Report it in the U.S. Virgin Islands
- Unwanted sales calls and robocalls: donotcall.gov (FTC). Scams and fraud: ReportFraud.ftc.gov.
- Spoofing, texts and call-blocking problems: FCC consumer complaints.
Your FTC and FCC reports are published (without your name or number) in the datasets this page is built from. How to report unwanted calls.
Area code 340: questions answered from the data
Where is area code 340?
Area code 340 serves Charlotte Amalie, St. Thomas and Saint Croix, the U.S. Virgin Islands. It has been in service since June 1, 1997.
What time zone is area code 340 in?
Area code 340 is in the Atlantic time zone (UTC−4 all year). The current local time is shown at the top of this page.
How do I report a 340 scam call in the U.S. Virgin Islands?
Report unwanted sales calls and robocalls to the FTC at donotcall.gov, and scams to ReportFraud.ftc.gov. The FCC takes complaints at consumercomplaints.fcc.gov. Reports feed the public data this page is built from.
Sources: FTC Do Not Call complaints (unverified consumer reports), published every weekday and available here from Jul 24; FCC Consumer Complaint Data, public record, imported nightly; NANPA numbering records. A number appearing here means consumers reported calls that displayed it. Caller ID can be spoofed.