Cloudflare Secure Registrar. Few people know that Cloudflare operates a registrar, but they do. The pricing is $enterprise, as it should be:

"Cloudflare Registrar is the highest level of registrar security. It protects your organization from domain hijacking with high-touch, on and off-line verification of any changes to your Registrar account. Cloudflare is an ICANN accredited registrar providing secure domain registration for high-profile domains."