Ahrefs has the world's largest index of live backlinks, updated with fresh data every 15–30 minutes. This index powers backlink data in Site Explorer, and is used to calculate our proprietary metrics: Ahrefs Rank, Domain Rating and URL Rating.
The complete database update - refreshing the info on the whole Internet backlinks - takes about two months. Within this time, some pages will be updated 60 times, others only once, depending on their rating.
AhrefsBot is the most active web crawler in the “Search Engine Optimization” category on Cloudflare Radar. It’s also the 3rd most active web crawler in the world.