Sometimes you need a lot of data fairly fast, and without an expensive subscription to API's like Moz, Majestic or Ahrefs there isn't anywhere else you can turn.
OpenRank's purpose is to supply 'good enough' data for large scale root domain authority comparisons.
The awesome Common Search project recently released a host-level PageRank dataset. This is the basis for OpenRank.
We merged the dataset on ~40M root domains and then fit a 100-point logarithmic scale to return a simple 0-100 value.
Need more datas?
Get a completely free API key and get access to up to 500,000 rows per day.