How to flush DNS cache in Firefox
Strange issue... whenever I try to access from Firefox on Win 7, I get redirected to which says:
You need to update your DNS records for docs.python.org. This is the old docs server.
My first thought was to do a ipconfig /flushdns, but that didn't fix the problem.
I also determined that the it wasn't a cache at my local network nor ISP level... (both returns 199.27.76.175)
C:\>nslookup docs.python.org.
Server: [INSTITUTION AD DNS SERVER - REMOVED]
Address: [REMOVED]
Non-authoritative answer:
Name: c.global-ssl.fastly.net
Address: 199.27.76.175
Aliases: docs.python.org
C:\>nslookup docs.python.org. 8.8.8.8
Server: google-public-dns-a.google.com
Address: 8.8.8.8
Non-authoritative answer:
Name: c.global-ssl.fastly.net
Address: 199.27.76.175
Aliases: docs.python.orgI have the Flagfox extension installed and it's showing 199.27.76.175 as the address as well.
Ctrl-F5 to refresh did not work either.
The weirdest thing is when I accessed the same address in Chrome, it worked (redirected me to )
Having known this, I tried (notice the httpS) in Firefox, and it worked as well! (Redirected to ).
What's up with this?! How can I fix this?
Since Chrome works and the IP is obviously the same as Google's DNS server, I assume this is caused by a Firefox internal DNS cache and the Flagfox address displayed is resolved separately and not the actual address used to contact the server.
12 Answers
I have learned that you must press Control+F5 a few times on Firefox for it to have any effect.
Btw there's also a DNS Flusher addon.
Are you (or your company) perhaps using a proxy that might have cached the DNS record? Even though you have flushed your local DNS cache, the proxy might need to flush it's DNS cache too.
