managed DNS provider
4 vendors in this category
AWS Route 53
https://aws.amazon.com/route53/
Azure DNS
https://azure.microsoft.com/en-us/products/dns
Cloudflare Secondary DNS
https://developers.cloudflare.com/dns/zone-setups/zone-transfers/cloudflare-as-secondary/#:~:text=With%20incoming%20zone%20transfers%2C%20you,AXFR%20%E2%86%97%20or%20IXFR%20%E2%86%97.
DigiCert DNS
https://www.digicert.com/dns-solutions