You know, I definitely wouldn't have a problem using a neutral site, in absence of a reliable feminist one, but it's just so frustrating when the entire category is dominated by one company like Go Daddy. (posted to Feminist web host?)
I don't know how they rank on the feminist scale, but Register.com is an option. (posted to Feminist web host?)
PS: I also found this list of domain name registrars. GoDaddy may be one of the most well-known names, but it doesn't look like they're fully dominating the category. Hopefully one of these will fit your requirements. (posted to Feminist web host?)