DNS propagation
Has my DNS change spread?
Ask five independent public resolvers the same question and see whether they agree. Differences usually mean a resolver is still caching the old answer.
Looks things up straight from your browser. When you press the button, this page asks five public resolvers (Google, Cloudflare, DNS.SB, Control D and RethinkDNS) directly, with no cookies and no referrer. We never see the lookup. Private addresses and internal names are never sent. Nothing is saved, and reloading clears everything.