DEV Community

loading...

Discussion on: Why all developers should learn how to perform basic network troubleshooting

Collapse
memattchung profile image
memattchung Author

Interesting ! Can you elaborate on this — was your DNS pointing at your ISP's resolver?

Collapse
jonasjohnson profile image
Jonas Johnson

I searched for something and the dns responded, even though the site didn’t exist. I then called the non existent thing and it came back with a 200 response. You can probably tell I’m very new to this and so I can’t elaborate much. My mentor caught it because it just didn’t make any sense.

Thread Thread
memattchung profile image
memattchung Author

I think I have a better understanding. Likely the DNS record resolved returned an IP address pointed at a different address. Despite hitting that IP and receiving an HTTP 200 OK, the web site does not exist. Well, that's my guess at least.

Thread Thread
jonasjohnson profile image
Jonas Johnson

Yeah that sounds about right.