So I have been recently getting threats of ddos's and have been got ddos attacked multiple times they send my IP, I've tried multiple times to change my IP with the ipcofig renew release things. firgured out its because I have a Comcast router or whatever. How do I get my Ip changed do I call Comcast, or is there nothing I can do?
You could try calling in but they likely can't / won't do it.
If you were using your own retail purchased router that has a MAC address cloning feature, you could clone a different MAC address into it. This woyld force their DHCP server to assign a new / different public IP address to your connection.
The Comcast supplied gateway devices do not support that feature....