DNS guide
DNS Propagation — How to Check If Your Changes Are Live
DNS propagation is the time it takes for a DNS change to spread across the internet's resolvers. Most changes take minutes to hours — but some can take up to 48 hours. Here's how to check propagation status in real time.
Why propagation takes time
DNS resolvers cache records for a period defined by the TTL (Time To Live) value. Until the cache expires, resolvers serve the old record. Lower TTL = faster propagation.
Typical propagation times
How to check
Use DomainPreflight Propagation checker — enter your domain, select record type, see live results from five resolvers simultaneously.
Check propagation now
Open Propagation checker →Step by step
FAQ
How long does DNS propagation take?
Most changes: minutes to 4 hours. NS record changes: up to 48 hours. Lower your TTL before changing to speed it up.
Why does my DNS change show for me but not others?
Different resolvers have different caches. Your ISP's resolver may have already updated while others haven't.
How do I speed up DNS propagation?
Lower your TTL to 300 seconds (5 min) before making changes. After the change is live everywhere, raise TTL back to 3600.
How do I check if my DNS has propagated?
Use DomainPreflight Propagation checker — it queries five different resolvers simultaneously and shows each result.
Is propagation complete when DomainPreflight shows all five green?
That means the five major resolvers (Cloudflare, Google) have updated. Other resolvers worldwide may take longer but these cover the majority.