What is DNS Propagation?
DNS propagation is the process of updating your domain's DNS records across the global network of DNS servers. When you make a change, it can take anywhere from a few minutes to 48 hours for the new records to be recognized globally, depending on the TTL (Time To Live) settings and individual ISP caching.
Why do different resolvers show different results?
DNS servers cache records to speed up resolution. If a server has cached your old record and the TTL hasn't expired, it will continue to serve the old record until the cache refreshes. That's why you might see updated records in one location (like Google DNS) but old records in another.
DNS Propagation Checker monitors how DNS changes spread across global servers. Changes typically take 24-48 hours to propagate through the DNS infrastructure.
Key Facts
- DNS propagation affects 300+ million domains
- Default TTL is 3600 seconds (1 hour)
- Over 600 root server instances worldwide
- Lowering TTL before changes can reduce propagation to under 30 minutes
Frequently Asked Questions
How long does DNS propagation take?
Typically 24-48 hours, can range from minutes to 72 hours depending on TTL values and caching policies.
How to speed up propagation?
Lower TTL to 300 seconds 24-48 hours before changes. After propagation, increase back to 3600+.
What is DNS TTL?
Time To Live — how long DNS resolvers cache a record in seconds. TTL 3600 = 1 hour cache.
Can I force DNS propagation?
Cannot force globally. Flush local cache and use Google DNS (8.8.8.8) which updates faster.