@SomeWhereOverTheRainBow
Thank so much for helping.
I am using the DNS from my ISP (Comcast).
I tried Google's before. It did not work either.
Skynet not able to ban many different domain nytimes.com, espn.com, etc. I can block them from the router URL Filter or Diversion black list.
I did not ban on both Skynet and Diversion. I just tested to see what works. I just tried some popular sites like nytimes.com. I can ban it from the router's firewall (AC68u 386.11 FW), or from Diversion but cannot ban it from Skynet. Can someone test it on your own router?