Attempting to Login to Tableau Online Dub01 Redirects to oos.tableausoftware.com or a Blank Page

When attempting to access online.tableau.com you are redirected to oos.tableausoftware.com or a blank screen.

Clear your web browsers cache, try incognito mode, and or other web browsers.
Verify the DNS cache has been flushed on your machine. See How To Clear Your DNS Cache for more information.
If your companies network has a DNS server, flush the DNS cache from the IT network level.

The Dub01 pod has been migrated from on-premises servers to AWS.

To verify whether your network has a server caching the old DNS entries for Tableau Online, follow the below steps.

Run the Windows Command Prompt as an administrator, and execute the below command.
- nslookup dub01.online.tableau.com
Check whether if the DNS results are being returned by a server within your network.
Below is an example of cached DNS results being returned within a local network.
- C:\WINDOWS\system32>nslookup dub01.online.tableau.com
  Server: mycompanynetwork.lan
  Address: 10.0.0.x
  
  Non-authoritative answer:
  Name: e7144.g.akamaiedge.net
  Address: 172.226.189.50
  Aliases: dub01.online.tableau.com
  dub01.online.tableau.com.edgekey.net
Execute the below command to see if different DNS results are returned by a public DNS server.
- nslookup dub01.online.tableau.com 8.8.8.8
If the initial results from Step 3 are different than the above and are returned by a server within your network, work with your IT team to flush the DNS cache at the server indicated in the initial results.