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
2026-02-28-1772246056-fdns_mx.json.gz
cc8d4a9ec84a2f0055420890974b716700d68760
6.9 GB Feb. 28, 2026
2026-02-28-1772244632-fdns_caa.json.gz
1690fcb224f687c23d99acd5151672476559143f
6.5 GB Feb. 28, 2026
2026-02-27-1772230904-fdns_txt.json.gz
4ce9cbf633da293253d7b1bc6369ba56eccec8c4
14.1 GB Feb. 28, 2026
2026-02-27-1772217747-fdns_aaaa.json.gz
394176597a7c6f3d0597892f64dab3c979997d4e
10.6 GB Feb. 28, 2026
2026-02-27-1772152411-fdns_a.json.gz
b28f51dbada12840a7ca401df45f63d335ff239f
37.3 GB Feb. 27, 2026
2026-02-27-1772151834-fdns_ns.json.gz
f6bef6060bfcd941dc3204ba43fa5907e6541d16
16.9 GB Feb. 27, 2026
2026-02-27-1772151339-fdns_cname.json.gz
23c19311713243670843c0da9d2e8627ffbd16f3
3.8 GB Feb. 27, 2026
2026-02-27-1772150783-fdns_any.json.gz
76b19be9021858ab01f161ff285f9a09cd1c89cf
76.0 GB Feb. 28, 2026
2026-02-21-1771641340-fdns_mx.json.gz
c2d317366b0fdf989e0d6cc1b319288ae5280241
6.8 GB Feb. 21, 2026
2026-02-20-1771612217-fdns_aaaa.json.gz
275f40e3b021982ac1b2a99c935e3bfaee08abe7
10.5 GB Feb. 21, 2026