не угадали.

So, I used DNS log from the OpenData Rapid 7 project.  This was a 3.5TB text file in JSON format, which shows the individual queries:

{"timestamp":"1530259463","name":"<domain>","type":"<a/cname/mx/..>","value":"<ip>"}

Linux offers lots of handy Gzip tools (zcat,...), so processing such a large volume of data wasn't a big problem.

There was a huge amount of various domains and subdomains on the list and it was necessary to reduce them and select only the "interesting" domains. I only filtered A queries on second-level domains of selected TLDs (generic, European + eu, other major states, popular new TLDs: top, xyz, etc.). That's how I got the list with more than 230 million domains.

https://opendata.rapid7.com/ - качайте на здоровье.