340 area code
Where the 340 area code is, its overlay and how to dial a +1 340 number from anywhere.
The 340 area code is in U.S. Virgin Islands, United States (Alaska (AKT)). To call from abroad: +1 340 555-0123.
The 340 area code is a geographic North American Numbering Plan (NANP) code covering U.S. Virgin Islands. It has been in service since 29-Apr-1997 and sits in the Alaska (AKT) time zone.
How to dial a 340 number
+1 340 555-01231 340 555-0123Frequently asked questions
Where is the 340 area code?
The 340 area code is in U.S. Virgin Islands, United States (Alaska (AKT)).
Do I have to dial 10 digits for 340?
Local calls within 340 may use seven digits; ten-digit dialling always works.
How do I call a 340 number from another country?
Dial your exit code (or +), then 1, then 340, then the number: +1 340 555-0123.
Source: NANPA numbering plan. An area code covers a region, not a precise address — a 340 number does not pinpoint a street or ZIP code.
Number holders in area code 340
Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 81 prefixes are in use in 340, shared by 13 companies. The largest holders:
| Company | Prefixes | Share |
|---|---|---|
| Virgin Islands Tel. Corp. Dba Innovative Telephone | 17 | 21% |
| Liberty Mobile Usvi Inc. | 16 | 20% |
| 14 | 17% | |
| Multiple Ocn Listing | 9 | 11% |
| Vitelcom Cellular, Inc. | 8 | 10% |
| T-Mobile USA, Inc. | 6 | 7% |
Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.
Complaints about 340 numbers
- Reports to the FTC, last 30 days
- 7
- Recorded messages or robocalls
- 86%
- Rank among area codes
- #414 of 670
- Most reported subjects
- Other (3)
- Calls pretending to be government, businesses, or family and friends (2)
- Reducing your debt (credit cards, mortgage, student loans) (1)
Period Aug 26 – Sep 24, 2026. These are the numbers shown on the caller ID of the reported calls; many are spoofed and do not belong to the real caller.
Source: US Federal Trade Commission, Do Not Call reported calls data (daily files).
All US area codes United States +1 Map of area code 340 — cities & rate centres