>>1979959 (lb)
as far as I understood, 8chan is protected by cloudflare. Not sure if it is even possible to use direct IPs (or if they would change)
When my provider doesn't resolve names, I use any other from lists like these, and put them into the DNS settings in my Operationg system's network setup:
(list not exhaustive, just example and not checked, as I didn't need any for a time now)
www.lifewire.com/free-and-public-dns-servers-2626062
public-dns.info//
beebom.com/best-dns-servers/
Also, one can try and use a simple proxy, like from this page for example, and input this into the browser's settings:
proxy-list.org/english/index.php