The Rapid7 Project Sonar datasets are amazing resources. They represent scans across the internet, compressed and easy to download. This blog post will focus on two of these datasets: https://opendata.rapid7.com/sonar.rdns_v2/ (rdns)https://opendata.rapid7.com/sonar.fdns_v2/ (fdns_a) Unfortunately, working with these datasets can be a bit slow as the rdns and fdns_a datasets each contain over 10GB of compressed text. … Continue reading DNSGrep — Quickly Searching Large DNS Datasets