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
2026-07-31-1785457918-fdns_mx.json.gz
sha1:7d1b06127fc71f740c02847422da364026834140
7.9 GB July 31, 2026
2026-07-31-1785457382-fdns_any.json.gz
sha1:3d366f9fa31bddcc36dadea6c962321daff4fc9e
76.4 GB Aug. 1, 2026
2026-07-31-1785456868-fdns_aaaa.json.gz
sha1:1024f2a6605974a3b9e30b423cdf04941cd650e6
12.8 GB July 31, 2026
2026-07-31-1785456299-fdns_caa.json.gz
sha1:a126bb9b75bec540e63c05794f2df6713d3fe886
6.2 GB July 31, 2026
2026-07-25-1784943290-fdns_a.json.gz
sha1:d4677cc22faa45118761b2c981d7a4c4dd6aa761
39.5 GB July 25, 2026
2026-07-24-1784920723-fdns_mx.json.gz
sha1:562ba0d17ab734665a520e3389aa324da3c67abe
7.8 GB July 25, 2026
2026-07-24-1784915819-fdns_caa.json.gz
sha1:c0e817af92771e389c33002b9352d46b8f39293b
6.1 GB July 25, 2026
2026-07-24-1784913340-fdns_cname.json.gz
sha1:6f295868384cd887a10d180201eda6e6167dc4a2
4.7 GB July 25, 2026
2026-07-24-1784853255-fdns_ns.json.gz
sha1:c1ed01937d9a78c58944878976eeb57fd93c0f91
18.1 GB July 24, 2026
2026-07-24-1784852703-fdns_aaaa.json.gz
sha1:c50f831e801699843aef2632558eea348df990f6
12.3 GB July 24, 2026