The most comprehensive DNS history database
Research domain nameserver changes and drops with 24+ years of historical data and 2.2 billion recorded changes.
Detailed Domain History
Track domain drops and nameserver changes with over 24 years of data. Get detailed information about every change recorded, including timestamps and nameserver details. Our system also detects whether a domain was previously parked — helping you assess a domain's real history before making decisions.
Check multiple domains in bulk
Have a large list of domains to check? No problem. With our bulk checker, you can check up to 1,000 domains at once and sort the results however you like.
A REST API built for developers
Plug DNS history straight into your own apps and workflows. A single authenticated request returns a domain's complete nameserver history as clean JSON — drops, changes, parked status and every recorded event — with your remaining quota in the response headers.