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Rail
Strollin' around
Status: New idea

Out of most important domains and services run by Mozilla, only a few have IPv6 support active with announced AAAA DNS entries.

These that do support IPv6 are:

  • developer.mozilla.org
  • foundation.mozilla.org
  • donate.mozilla.org
  • firefox-source-docs.mozilla.org
  • archive.mozilla.org (CDN)
  • thunderbird.net

But these are legacy IPv4-only:

  • mozilla.org
  • relay.firefox.com
  • firefox.com
  • fpn.firefox.com
  • monitor.firefox.com
  • support.mozilla.org
  • getpocket.com
  • blog.mozilla.org
  • bugzilla.mozilla.org
  • hacks.mozilla.org
  • mozilla.design
  • download-installer.cdn.mozilla.net (CDN)
  • wiki.mozilla.org
  • discourse.mozilla.org
  • connect.mozilla.org
  • accounts.firefox.com
  • basket.mozilla.org
  • addons.mozilla.org

As you probably noticed, this list is considerably longer, contains some of the most important domains and these are just the ones I were able to find by following a few links on the main mozilla.org home page. There's probably a lot more, including underlying API domains that browsers and services make calls to.

Please, for the sake of better internet, enable IPv6 support at least on most important, highest traffic domains and APIs your services use.

4 Comments
Status changed to: New idea
Jon
Community Manager
Community Manager

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

sydney_techie
New member

I've encountered this as a blocker when attempting to setup a laptop as an IPv6-only test.

Everything else has worked fine until this point, but I'm unable to login to Firefox for sync since accounts.firefox.com still doesn't have an AAAA record in 2024.

lucasmz
New member

An update, some of the domains you listed now have IPv6.

- mozilla.org

- download-installer.cdn.mozilla.net

- discourse.mozilla.org

- addons.mozilla.org

 

A lot of the still not supported ones are in very similar IP ranges or even the same IPs... which makes me think it's either missing DNS records, or missing basic configuration... this should be considered a bug, not a feature or a 'recommendation' at this point. Most of the world is behind IPv4 which is behind layers of ducktape.

lucasmz
New member

Some of the services you listed, as of today, 14/07/2025, do now support IPv6, but still, a lot's lacking.

- mozilla.org

- download-installer.cdn.mozilla.net (thank god?)

- discourse.mozilla.org

- addons.mozilla.org

 

I'd also like to add push.services.mozilla.org as one that's missing, which is used for push communications in the browser. (e.g. important for Firefox Sync notifications for sent content).

From the IP ranges, it makes me think that really, this is just simple misconfiguration, or missing AAAA records maybe, not sure. But this should be considered a bug, not even an idea or feature or anything. Most of the world is using IPv4 that's being provided with layers of ducktape.