Use a fast DNS provider with low TTL
Set the domain’s TTL to the minimum allowed
Point the domain to a highly responsive authoritative DNS server
Use Anycast DNS for global low-latency resolution
Keep DNS records small and simple
Avoid unnecessary CNAME chains
Use DNS caching at the resolver level
Minimize network hops between users and DNS servers
Place DNS servers close to major user regions
Monitor DNS query latency continuously
Optimize registrar and nameserver configuration
Ensure authoritative servers have high uptime and low load
Use DNSSEC only if the added latency is acceptable
Test resolution speed from multiple locations
Use a CDN or edge DNS service if needed