domopoli.de
dtdns.com
dyndns.org
+ dyns.cx|net
dynu.com
easydns.com
enom.com
entrydns.net
freedns.afraid.org
+ myonlineportal.net
namecheap.com
no-ip.com
nsupdate.info
udmedia.de
variomedia.de
zoneedit.com
+ zzzz.io
Also supports DNS updates via the ISC BIND nsupdate utility.