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

Existing Sonar Data users can sign in for access. See the About page for information on requesting access.

File Name SHA1-Fingerprint Size Updated At
2026-07-10-1783643038-fdns_mx.json.gz
sha1:c6bc419e061ed9909d6758df7deecb1b2551bc8a
7.5 GB July 10, 2026
2026-07-10-1783642509-fdns_aaaa.json.gz
sha1:21e9480eec61eb776408f1a117068e34fe0680b1
12.3 GB July 10, 2026
2026-07-10-1783641928-fdns_any.json.gz
sha1:e50e7baed09449a933295582b73b1630ef636f50
74.0 GB July 10, 2026
2026-07-04-1783124060-fdns_caa.json.gz
sha1:0f2bf58466a66567f5a8fbdc67574a8f7aa0f2c2
5.9 GB July 4, 2026
2026-07-03-1783095077-fdns_cname.json.gz
sha1:daf62b23ae3a845542801e07c835172e156831c1
4.5 GB July 4, 2026
2026-07-03-1783094388-fdns_a.json.gz
sha1:32866c8aef7731f7a8c31b57ac9fb5f3a763954a
37.7 GB July 4, 2026
2026-07-03-1783092587-fdns_ns.json.gz
sha1:a434ec0354842b10037914ed235717af330c5ceb
17.6 GB July 4, 2026
2026-07-03-1783038731-fdns_any.json.gz
sha1:b14c7c7ced28842c97b218d64f54643ba903a4f5
71.8 GB July 3, 2026
2026-07-03-1783038208-fdns_txt.json.gz
sha1:95387d673c2bd32b5eca216a1dff53a4276495c8
14.6 GB July 3, 2026
2026-07-03-1783037650-fdns_mx.json.gz
sha1:cd90c83c0be7330658ed0855648b42adf5dea83e
7.3 GB July 3, 2026