Here are the sites I recommend for Domain Registrations:

Hostinger

I personally used Hostinger Domain and hosting for this site: Check out their specials here:

NameCheap

Another one is NameCheap:

Register Your Domains Hassle-Free with Namecheap starting at $3.98/year

SiteGround

SiteGround backed up by Google Servers is also an awesome hosting solution that I use for some of my websites:

GoDaddy

Grab your Website Domain and hosting from GoDaddy here: