Aqui os dejo una lista de 33 webs que ofrecen servicio DNS gratuito, espero que os sirva.
https://www.dyndns.com/account/create.html
http://www.no-ip.com/newUser.php
http://www.ddns.nu/register.php
https://members.dhs.org/signup
http://www.dnip.net/register.cgi
http://domain-dns.com/mydns.cgi?session … 9286af529d
https://www.dtdns.com/index.cfm?fuseaction=account.join
http://dns.blueline.be/
http://dyndns.dk/ny.php
http://www.dyndsl.com/gnudip/cgi-bin/gn … ion=signup
http://dynserv.com/index.php?action=bas … pand=basic
http://www.dynu.com/basic.asp?type=signup
http://www.dynup.net/signup/signup.php3
http://www.eurodns.com/register.php
http://www.everydns.net
http://fdns.net/register.jsp;jsessionid=NPINKGDEBOLC
http://freedns.afraid.org/signup
http://hn.org/signup/vanity.shtml
http://www.ipupdater.com/signup.php
http://www.mtgsy.net/new_user.php?action=add
http://www.mydynip.org/metadot/index.pl … ister_form
http://myip.org/signup/index.htm?loc=signupPickDomain
https://ssl.myserver.org/registerbeta/Free.asp
http://www.nerdie.net/index.php?site=register
http://www.opendns.be/Content/newuser.asp
http://www.prout.be/dns/?p=user_new
http://www.selfhost.com/register.asp
http://www.sitelutions.com/signup
http://www.yi.org/new.pl
http://www.dyns.cx/signup
https://www.2mydns.com/signup.asp
http://www.dhis.org/register.html
http://www.editdns.com