I use https://dnsimple.com https://dnsimple.com. They offer only DNS services (no web hosting). It's a bit more expensive than other registrar, but it's sooooo

I use https://dnsimple.com https://dnsimple.com. They offer only DNS services (no web hosting). It's a bit more expensive than other registrar, but it's sooooo easy to use. The additional price is definitely worth the extra convenience. There are pre-defined templates for popular services (Heroku, Google Apps, Wordress, Blogger, etc) which will create the dns records for you. I love it and won't go back. Plus the user interface is not bloated at all, compared to what I've seen elsewhere.