• helloquiz logo
  • helloquiz logo
  • helloquiz
  • search
  • anki mode
  • your quizzes
  • account
  • docs
  • donate

    • appearance settings

    colour scheme

    system
    dark
    light

    map quizzes

    compact
    full

    zoom delay

    1ms
    100ms
    250ms

    Vietnam phone codes (1 digit)[remixes / new remix / add to deck ]

    about
    settings
    ⓘ
    ✖
    ⚙

    Learn the first digit of Vietnamese phone codes (geojson source)

    by Alex*|updated on 28/06/2025