DNS Management Services
namecheap.com
Free DNS. No limit on the number of domains
nextdns.io
DNS-based firewall, 300K free queries monthly
duckdns.org
Free DDNS with up to 5 domains on the free tier. With configuration guides for various setups
dnspod.com
Free DNS hosting
huaweicloud.com
– Free DNS hosting by Huawei
zilore.com
Free DNS hosting for 5 domains
zoneedit.com
Free DNS hosting with Dynamic DNS Support
cloudns.net
Free DNS hosting up to 1 domain with 50 records
freedns.afraid.org
Free DNS hosting. Also, provide free subdomains based on numerous public user contributed domains. Get free subdomains from the "Subdomains" menu after signing up
luadns.com
Free DNS hosting, three domains, all features with reasonable limits
Glauca
– Free DNS hosting for up to 3 domains and DNSSEC support
zonewatcher.com
Automatic backups and DNS change monitoring. One domain free