DNS 'ANY', 'A', 'AAAA', 'TXT', 'MX', and 'CNAME' responses for known forward DNS names

Study Details

Study

Forward DNS (FDNS)

Author

Project Sonar | Rapid7

Contact

Rapid7 Labs

Dataset Details

This dataset contains the responses to DNS requests for all forward DNS names known by Rapid7's Project Sonar. Until early November 2017, all of these were for the 'ANY' record with a fallback A and AAAA request if necessary. After that, the ANY study represents only the responses to ANY requests, and dedicated studies were created for the A, AAAA, CNAME and TXT record lookups with appropriately named files. The file is a GZIP compressed file containing the name, type, value and timestamp of any returned records for a given name in JSON format.

Dataset Schema

Full Dataset Listing

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File Name SHA1-Fingerprint Size Updated At
2026-04-01-1775003637-fdns_txt_mx_dmarc.json.gz
b448adc122682914351705a71172e08088607358
79.5 MB April 1, 2026
2026-04-01-1775002468-fdns_txt_mx_mta-sts.json.gz
8fd9f1d390ad3e4445d818af686329ce9f92d60e
23.8 MB April 1, 2026
2026-03-28-1774682385-fdns_aaaa.json.gz
519104fd1deb83e43127450773407d2bbcd1220d
10.9 GB March 28, 2026
2026-03-27-1774631205-fdns_mx.json.gz
128a8e6d3a1f5ae139fb08297427f4384628fea0
7.1 GB March 28, 2026
2026-03-27-1774628142-fdns_any.json.gz
1d1213805ee95c84b80ac085b5518c6670ed4c9f
76.3 GB March 28, 2026
2026-03-27-1774625131-fdns_ns.json.gz
671a6e0955bc518b4f55571414495527670fd327
16.0 GB March 28, 2026
2026-03-27-1774571559-fdns_a.json.gz
88839ddea63cf082844a369d390475c821d13b1c
37.1 GB March 27, 2026
2026-03-27-1774571037-fdns_txt.json.gz
64dd0b8080031be9f603cb76c4ccb90855c1e7f6
13.7 GB March 27, 2026
2026-03-27-1774570478-fdns_caa.json.gz
cdfc740e5d1c81c9c26b39e3019c008f89b8a61e
5.3 GB March 27, 2026
2026-03-27-1774569922-fdns_cname.json.gz
cd622d0092098c5e5e060454b62b45e9f30a1e15
4.0 GB March 27, 2026