ROBLOX is located at www.roblox.com and it won't move from that address. The only other official addresses that ROBLOX uses are the test servers, at gametest[1-5].robloxlabs.com and sitetest[1-5].robloxlabs.com, as well as some other subdomains that are more rarely seen, but that all end with ".roblox.com". Clicking the big 'ROBLOX' logo at the top of your screen will always take you to the home page.