Free DNS Propagation Checker
Check if your DNS changes have propagated globally. We query multiple DNS servers worldwide to show whether your records are live everywhere.
Understanding DNS Propagation
When you change a DNS record, the update doesn't happen instantly across the entire internet. DNS servers around the world cache records based on their TTL (Time To Live) value. Until those caches expire, different servers may return different results for the same query.
How This Tool Works
This tool queries major public DNS resolvers (Google, Cloudflare, Quad9, OpenDNS, and others) to check what each one returns for your domain. If all servers return the same, correct records, propagation is complete.
DNS Propagation and Custom Domains
When users set up custom domains for SaaS platforms, they add DNS records (typically a CNAME record) that need to propagate before the domain becomes active. Premature activation attempts fail because not all DNS servers have the new records yet. Use our DNS lookup tool to check what records are currently set for any domain.
SaaSKevin solves this by verifying that each domain's records resolve to the expected routing targets before activation. Domains stay pending until checks pass, then SSL is provisioned and traffic routing is enabled.
Frequently Asked Questions
- What is DNS propagation?
- DNS propagation is the process of DNS changes (like new records or modified values) being distributed across all DNS servers worldwide. When you update a DNS record, it takes time for every DNS server to receive and cache the new information.
- How long does DNS propagation take?
- DNS propagation typically takes a few minutes to 48 hours, though most changes propagate within 1-4 hours. The speed depends on the TTL (Time To Live) of the previous record, DNS caching, and the DNS provider.
- Why do some DNS servers show different results?
- Different DNS servers may cache records for different durations based on the TTL value. During propagation, some servers will still serve the old cached record while others have already picked up the new one.
- How can I speed up DNS propagation?
- Before making changes, lower the TTL of the record to a small value (like 60 seconds) and wait for the old TTL to expire. Then make your change. After propagation, you can increase the TTL again. Some DNS providers like Cloudflare also have instant propagation for their own resolvers.
- How does DNS propagation affect custom domain setup?
- When setting up custom domains for a SaaS platform, users add CNAME or A records that must resolve to the expected routing target before the domain goes live. SaaSKevin keeps domains in pending DNS/SSL states until routing checks pass, then activates SSL and routing.
Need setup examples for real SaaS products? Browse our industry guides and explore all free domain tools.