Domain Name Yahoo

Yahoo will register your domains' names for under $10 a year, though as of
this writing, Yahoo is having a sale on domains for $2.99 per year. That's a
lot cheaper than some registrars I've seen that are still trying to charge
$20 or more just for domains.

Once you get your domain registered, you still need to host it somewhere.
Again, Yahoo has a simple answer, or several simple answers, in its
Geocities service. You can plunk down your domains for free at Yahoo
Geocities, but you'll have ads. For a nominal fee ($4.95 per month) you can
get 500 MB storage and 25 GB per month transfer -- that's more than enough
for most starter sites.

source : yahoo-domain-name-yahoo-hosting.blogspot.com