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
2026-03-21-1774060855-fdns_caa.json.gz
da7a4a9043c4550793d1bb9ee4a820b1539df484
5.7 GB March 21, 2026
2026-03-20-1774027593-fdns_a.json.gz
e0693813046a5e22856c045a7a33a3152ba4d1d1
36.9 GB March 21, 2026
2026-03-20-1774026167-fdns_ns.json.gz
fb5e616405262e942768cfcfd6d3a71ed3051604
16.0 GB March 21, 2026
2026-03-20-1774025241-fdns_cname.json.gz
302452530740e3fe9890d697c3b2cb7591eeca27
4.0 GB March 21, 2026
2026-03-20-1773966744-fdns_mx.json.gz
d95d4dc1f0b624e4a67bbc5077d42482621d3330
7.2 GB March 20, 2026
2026-03-20-1773966197-fdns_aaaa.json.gz
28a3bb6334bf6f96e9088b37ce5eb5a7b30c1999
10.8 GB March 20, 2026
2026-03-20-1773965660-fdns_any.json.gz
ac72e54734eaddece651a74a50ca01e9bfb64dc0
76.1 GB March 21, 2026
2026-03-20-1773965180-fdns_txt.json.gz
552ab1ac58eace6d7ff5d3c4bdf1eaf1f33e9e67
13.6 GB March 20, 2026
2026-03-14-1773482276-fdns_ns.json.gz
6d72e92e58dd6be129a23fb1ed8b7d3cf31c6fdb
16.8 GB March 15, 2026
2026-03-13-1773440200-fdns_caa.json.gz
960252316f7c3131d6c1e016fae98642108936b9
6.2 GB March 14, 2026