Voluntary Agency Network of Korea
The Voluntary Agency Network of Korea (Korean: 사이버 외교사절단), abbreviated VANK (반크), is an Internet-based South Korean organization established by Park Ki-Tae in 1999, consisting of 120,000 South Korean members and 30,000 international members. VANK's membership consists mainly of junior high and high school students, although university students also participate.
Source: Wikipedia — Voluntary Agency Network of Korea (CC BY-SA 4.0)