# DynDNS

When the DynDNS feature is enabled at the [settings](https://docs.hostware.io/domains/settings#dyndns), the customer will be shown the DynDNS page at domain view.

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A DynDNS connection defines a hostname (subdomain) plus key/update URL.\
The router calls that URL to update the hostname’s DNS records automatically:

* A for IPv4 (ip)
* AAAA for IPv6 (ip6)

So the connection is not the DNS record itself, but the mapping/update config that manages those records.