[Ayantir]

for zoneIndex = 1, 9999 do
    local zoneName = GetZoneNameByIndex(zoneIndex)
    if zoneName ~= "" then
        GLOBAL_DUMPER[zoneIndex] = zoneName
    end
end

PS: You should not use zoneIndex as they move at each DLC, but zoneId. You have few functions to get zoneId from zoneIndex and viceversa. (generally 2/3 index of public playable zones are moved)