Ahrefs claims to have the most complete database of websites, keywords and online marketing data. Although it is questionable whether Google’s database is larger, there is no question that with stats like this, Ahrefs provides access to the largest database:
– 200 million root domains
– 3 trillion URLs
– 6 billion keywords
This level of data makes Ahrefs extremely useful when performing competitor analysis. The data revealed here can play a strategic role in planning and campaign optimisation.