Webmasters Stack Exchange is a question and answer site for pro webmasters. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have changed the nameserver's of one of my domains but I found a problem that within Firefox these changes have not updated as expected, however this problem does not occur in other browsers such as Internet Explorer.

I have refreshed the page and no joy, Why is the nameservers only working for certain browsers?

share|improve this question
up vote 2 down vote accepted

Browsers cache DNS which is separate from just clearing the cache which deletes temporary files.

To delete the DNS cache in Firefox follow these easy steps:

  1. Enter about:config into the address bar
  2. If you receive an acknowledge warning click next
  3. Find a option that is labeled network.dnsCacheExpiration and set its value to 0
  4. Restart Firefox

In the event you could not find network.dnsCacheExpiration simply create one and enter value 0, then after its updated you can put 3600 which I believe is the default.


You could opt to use the easy method of installing an extension, I use DNS Flusher which is available on the Firefox Extension Library, Simply enable toolbar at the bottom and click the IP address and it'll say FLUSHED. Then hit CTRL F5 or Mac Key F5.

share|improve this answer
It's already 1 day and firefox still shows the old pages. Okay I'll try then. – Jim Thio May 23 '13 at 0:20
Hmm... The value was 2592000. I wonder why. Good answer. – Jim Thio May 23 '13 at 0:21
That fixes it. Thanks. – Jim Thio May 23 '13 at 0:22

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.