Instantly check how your domain's DNS records are resolving across 4 global public DNS servers.
We query 4 major public DNS resolvers used by millions of devices and ISPs worldwide. If your records match across all of them, your DNS changes have fully propagated.
When you update your domain's DNS records — for example, pointing your domain to a new hosting server — that change needs to travel across thousands of DNS servers around the world. This process is called DNS propagation. Until propagation is complete, different users in different locations may see different versions of your website. It typically takes between 15 minutes and 48 hours.
Use the tool above. Enter your domain and choose the record type (A record for a website, MX for email, NS for nameservers). If the same value appears across all 4 resolvers, propagation is complete everywhere these resolvers have coverage — which represents the majority of internet users globally.
Different devices use different DNS resolvers. Your mobile phone on 4G/5G often uses your carrier's DNS or Google DNS (8.8.8.8), while your home computer uses your router's default DNS (often your ISP's). If these two resolvers have cached different values, you will see different results — this is completely normal during DNS propagation.
Most DNS changes propagate within 1–4 hours for the majority of users. However, because DNS resolvers cache records for as long as the TTL (Time to Live) value instructs them to, it can take up to 48 hours in rare cases. Lowering your TTL value to 300 seconds (5 minutes) before making a DNS change can significantly speed up propagation.
TTL (Time to Live) is a value in your DNS records that tells resolvers how long to cache the record before requesting a fresh copy. A low TTL (e.g. 300 = 5 minutes) means changes propagate fast, but every request hits the authoritative server more often. A high TTL (e.g. 86400 = 24 hours) reduces server load but means changes take longer to be seen globally.
Use A record if you're checking if your website's IP address has updated. Use MX records to check email routing. Use NS records to verify your nameservers have switched. Use TXT records to check SPF, DKIM or Google Site Verification records. Use CNAME for aliases like www pointing to your root domain.
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