A chronological DNS archive
Every resource record this archive has collected, kept with the time it was seen. Look up a domain to read its names on a time axis, or a single name to read its records as they changed.
example.com — names under an apex
www.example.com — records for one name
example — apexes starting with a prefix
Search matches the start of an apex, not any part of it. The archive is indexed by name, so a prefix is a key lookup and a substring would be a full scan of tens of billions of rows.
Observations are collected on a schedule, so a record's timestamp is when this archive last saw it — not when it changed. Times are UTC.