DNS Propagation Checker

Check DNS record propagation across multiple public DNS resolvers. Compare responses from Cloudflare, Google, Quad9, and OpenDNS to verify consistent DNS propagation worldwide.

Propagation Examples

Propagation Check Configuration

Understanding DNS Propagation

What is DNS Propagation?

DNS propagation refers to the time it takes for DNS changes to spread across the internet. Different resolvers may cache records for different periods, leading to temporary inconsistencies.

Factors Affecting Propagation

  • TTL Values: Lower TTL means faster propagation
  • Resolver Caching: Each resolver has its own cache policies
  • Geographic Location: Physical distance affects update speed
  • DNS Infrastructure: Authoritative server response time

Interpreting Results

Fully Propagated: All resolvers return identical results
Inconsistent: Different resolvers return different results
Error: Resolver failed to respond or returned an error

DNS Resolvers Tested

Cloudflare (1.1.1.1) Global
Google (8.8.8.8) Global
Quad9 (9.9.9.9) Global
OpenDNS (208.67.222.222) Global