External
DNSChecker
Watch your DNS change propagate across the planet.
DNSChecker queries your domain records from DNS servers around the world so you can see whether a change has propagated everywhere. The site also bundles a large collection of related network lookup tools, all free.
Best for: Use this when you changed a DNS record and want to know if the rest of the world sees it yet.
Pros
- Multi-location results in one view
- Covers all the common record types
- Big companion set of network utilities
Cons
- Ad-heavy pages
- Results are snapshots, resolver caching can still mislead
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