GoDaddy is the well-known domain registrar. Although I use Namecheap for registering all of my domains as it provides more features in less price but most of the users here recommend to buy domains from GoDaddy. Here are some coupon codes for GoDaddy that are valid for the month of February 2010.
GoDaddy Discount Coupon – February 2010
NAU1: Get 10% off on your order