About the ddns.flex-sys.us service

What's this?

ddns.flex-sys.us is a dynamic dns service.

You usually need it so your router (or other dyndns2-compatible client) can update a hostname, so you don't need to know or find out your current IP address.

ddns.flex-sys.us is simple, usable, free, friendly, secure and respects your privacy.

Why another one?

As far as we know, there was no service yet that is not:

  • nagging its users to make a paid subscription
  • annoying its users with advertisements or spam
  • cancelling hosts or accounts after a short period of non-usage
  • hiding the few free features almost undiscoverably between a ton of commercial-only features

How is it?

You can just try it using the test account (see Register page).

Also, we have documentation — there might be some interesting stuff for you in it that is not visible or obvious on the user interface.

If you are interested in the software project, have a look at the nsupdate.info project on GitHub.

Fair use of the service

The only thing we expect from you is fair use of this service:

  • Don't abuse the service in any way.
  • Don't update your hosts too often.
  • Don't do updates if your IP did not change.
  • Don't create lots of users or lots of hosts.
  • Don't use the service for any illegal or otherwise questionable purpose.
  • Don't spam us via e-mail.

We reserve the right to remove any account or hostname(s) that are related to unfair use of the service - at any time and without prior notice.

No warranties

This is free software and a free service, there are no warranties.

If it breaks, it breaks.

Service Contact

admin AT flex-sys DOT us

Before contacting us via E-Mail, please read the docs, they exist for a reason.

Software Project Contact

Visit the nsupdate.info project on GitHub to:

  • file issues on the issue tracker for bugs, ideas, patches.
  • create pull requests for your contributions.