[Denvercoder9]

First, 1.1.1.1 and 8.8.8.8 are DNS servers, not gateways. Second, changing DNS server doesn't really work against a 404.

[loa_in_]

It might, because it might be not the entity you expect that gives you 404.

Even if not for wrong DNS resolution, it might be the load balancer that points you to server who doesn't have the resource somehow.