DNS Propagation Dynamics & Caching
Why DNS Changes Take Time to Propagate Globally
When you update a DNS record, recursive resolvers worldwide do not refresh immediately; they cache the old value until the existing TTL expires. Our tool queries 10 geographically distributed international resolvers (Google, Cloudflare, Quad9, OpenDNS, Level3) to show you real-time global propagation status.
❓ Frequently Asked Questions
How can I speed up DNS propagation before a server migration?
Lower your DNS TTL to 300 seconds (5 minutes) at least 24 to 48 hours before the migration. This ensures resolvers drop their caches quickly when you make the final IP change.