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PortJar

DNS Propagation Checker

Compare DNS answers across multiple public resolvers worldwide.

DNS

About this tool

Queries the same record from Google, Cloudflare, Quad9, NextDNS, and OpenDNS resolvers in parallel via DNS-over-HTTPS. If every resolver agrees, your record has propagated. If answers diverge, the change is still rolling out.

FAQ

How long does DNS propagation take?
Most modern resolvers respect TTL within a few minutes. Stragglers can take up to the previous TTL value (often 1–24 hours). Lowering the TTL before a planned change shortens the window.

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