I don't know and can only suggest you to try.
DuckDNS didn't work for you because it routes a subdomain to your IP. We are more trying to find a
free (if possible ) solution where a software creates a tunnel from your PC to a public IP to avoid having to deal with your provider's restrictions
Edit : rraaaahhh.. Just seen my web server again. Perhaps could you try PrivateTunnel too... (unsure)
Edit1 : no-ip won't work because it only links the subdomain to the IP and does not create a tunnel.
Sorry, I have to go... Good luck