Buy a Local Phone Number – Area Code 340 (Charlotte Amalie, United States Virgin Islands)

Carved from NPA 809 in 1997, area code 340 gave the United States Virgin Islands a distinct presence in the North American Numbering Plan, with Charlotte Amalie on St. Thomas as a key switching and traffic hub. Earlier inter-island calling relied on microwave relays and satellite backhaul; by the 2000s, multiple subsea fiber links to Puerto Rico and the mainland shouldered most long-haul capacity. Number portability, SS7 upgrades, and the rapid rise of cellular service reshaped routing and local habits, integrating the territory’s networks with stateside standards.

• Tourism, cruise operations, and ports driving seasonal traffic surges.
• Government administration and public services concentrating on St. Thomas.
• Rum production, light manufacturing, and the refinery legacy on St. Croix.
• Marine services, yachting, and inter-island logistics.

Charlotte Amalie’s cruise schedules and Carnival events produce predictable signaling and data peaks, prompting temporary capacity and waterfront coverage. Hurricanes—especially in 2017—drove hardening: undergrounding where feasible, diversified power, and microwave or satellite fallback when fiber is impaired. This NPA has not required an overlay, reflecting modest demand and number conservation. Multilingual support and IVR prompts reflect English alongside Spanish in commerce; local speech patterns shape interactions. Seamless NANP dialing keeps calls to the mainland domestic in routing and policy.