local NpcList = {
    950000,
    950001,
    950002,
    950003,
    950004,
    950005,
};

local TeleTable = {
    {571, 7582.549805, 4848.779785, 43.179600, 3.1654207},
    {571, 7582.549805, 4848.779785, 43.179600, 3.1654207},
    {571, 7582.549805, 4848.779785, 43.179600, 3.1654207},
    {571, 7582.549805, 4848.779785, 43.179600, 3.1654207},
    {571, 7582.549805, 4848.779785, 43.179600, 3.1654207},
    {571, 7582.549805, 4848.779785, 43.179600, 3.1654207},
};

local function PortalTrigger(event, creature, target)
    if (creature:GetDistance(target) <= 3) then -- 15 is the [float] radius, change it to whatever you feel comfortable with
        local npcid = creature:GetEntry()
        for k, entry in ipairs(NpcList) do
            if entry == npcid then
                target:Teleport(table.unpack(TeleTable[k]))
            end
        end
    end
end

for k, v in ipairs(NpcList) do
    RegisterCreatureEvent(v, 27, PortalTrigger)
end