- Namecheap
- Cloudflare
- Route 53 (if on AWS)
Any others?
As an example; I had a dedicated server that I was leasing that I wanted to upgrade, the sales tech noticed that the plan I was currently on had been retired/replaced and credited my account with difference of what I had payed vs the new payment tier which amounted to six months of billing on the upgraded server. You can't really put a price on that kind of honesty!