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Bulk Data Access

We publish our database in its entirety at the end of each month in CSV and parquet formats, the latest data can downloaded from the links specified below. we recommend the parquet format since its much smaller when uncompressed.

Statistics​

  • Data for: October 2026
  • Released On: November 7th 2026
  • Records: 6.46 Billion

Downloads​

RDNS Database​
File TypeCompressedUncompressedDownload
Parquet51GB79GBrdns-oct.parquet.gz
CSV36GB245GBrdns-oct.csv.gz
Daily Certificate Transparency Log Dumps​