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
2026-07-03-1783095077-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
2026-07-03-1783037121-fdns_aaaa.json.gz
sha1:92be694ae45d43db19b41c14e8f98320fb8ed69a
12.0 GB July 3, 2026
2026-07-01-1782864886-fdns_txt_mx_mta-sts.json.gz
sha1:e82a5813ece04d617913c3ea15278b475d6d622c
25.0 MB July 1, 2026
2026-07-01-1782864372-fdns_txt_mx_dmarc.json.gz
sha1:6da031bbb5858a655cd081b5c3d377ade2f7b2a1
82.0 MB July 1, 2026
2026-06-26-1782513904-fdns_a.json.gz
sha1:63f3dd5e41ed820ae8ae1791eda3ac55cf645f33
37.6 GB June 27, 2026