Has your DNS
change spread everywhere?
Check a domain’s DNS propagation across 15 public resolvers worldwide (Google, Cloudflare, Quad9, OpenDNS…): A, AAAA, CNAME, MX, NS, TXT.
Examples: google.com wikipedia.org github.com
Understanding DNS propagation
Why a DNS change does not show up everywhere at once.
The new value is published at once by your domain’s name servers.
Each resolver (ISP, Google, Cloudflare…) keeps the old answer until its TTL runs out.
When every resolver gives the same answer, propagation is complete. Run the test again to follow progress.
FAQ
How long does DNS propagation take?
Usually a few minutes to a few hours: each resolver keeps the old answer until its TTL expires. Changing name servers (NS) at the registrar can take up to 48 hours.
Why do some resolvers show a different answer?
They still have the old value cached, or the domain deliberately returns different addresses by region (CDN, load balancing). Several answers therefore do not always mean a problem.
How can I speed up propagation?
Lower the TTL several hours before the change, then raise it afterwards. On your computer, flush the DNS cache: “ipconfig /flushdns” on Windows, “sudo dscacheutil -flushcache” on macOS.