nsupdate.info
Dynamic DNS service for updating hostnames when your IP address changes.
nsupdate.info is a free, open-source dynamic DNS service that lets a router or other dyndns2-compatible client update a hostname, so you do not need to know your current IP address. The service states that it does not show ads, send spam, or require paid subscriptions, and it asks users to follow fair use rules such as not updating hosts too often or creating many users and hosts. It is built with Python and Django, and the source code is available on GitHub.
The service provides hostname updates through the dyndns2 protocol, with a sign-up and login interface, documentation, and a test account for trying it out. The homepage displays the visitor's current IPv4 and IPv6 addresses along with reverse DNS entries. The software project accepts issues and pull requests on GitHub.
nsupdate.info is intended for individuals and organizations that need dynamic DNS for home routers or other compatible clients. It is offered as a free service with no paid subscriptions or editions described; accounts and hostnames may be removed for unfair use, and the service provides no warranties.
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