dial tcp (IP):80: connect: no route to host

Summary:

I cannot connect to any of my websites or machines except over ssh since earlier today. I get the error:

dial tcp ip.address.or.domain: connect: no route to host

Content (required):

This was after changing no networking settings or doing anything at all really. None of my websites are available, the machine does not reply to pings, and I have tried and gotten this response, a timed out error, or a tunnel error on numerous networks, devices, and browsers.

Most information I can find on this error points towards it being an error with the host network, not with the individual machines. I have confirmed my ip addresses are all correct, and everything was working fine for months.