What do you use for client DNS management?

Managing 80 domains across 4 registrars right now and the DNS sprawl is becoming a nightmare — some use the registrar's free DNS, others are on Vultr, one client insisted on Hetzner. I need to consolidate before I lose track of which zone lives where. Did you test your restore process for your DNS records? I learned the hard way that 3-2-1 applies to zone files too — had a registrar "lose" a zone during transfer and my only copy was live, not backed up.

Currently leaning toward Vultr or DNSMadeEasy for the bulk move. Would love to hear what's working for you at scale.

I will use terraform for all dns. Two server, ten server, same command. My module:

module "dns" {
  source = "./modules/dns"
  for_each = var.domains
  name = each.value.name
  records = each.value.records
}

Will run `terraform plan` every morning. Will not trust click-interface. XD

NOTE: Vultr API will rate-limit at 100 request per minute. Will add sleep. Their docs: https://docs.vultr.com