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
2026-06-05-1780676361-fdns_a.json.gz
sha1:c7907aa8f3a571db54ab94b257555b8183fe281d
37.6 GB June 6, 2026
2026-06-05-1780671809-fdns_txt.json.gz
sha1:abc07744d415988d675ac4809d772b94287f3e1c
14.5 GB June 6, 2026
2026-06-05-1780619583-fdns_mx.json.gz
sha1:56ac94256075953636147007b0bf719bf6ec4288
7.4 GB June 5, 2026
2026-06-05-1780619057-fdns_cname.json.gz
sha1:33453aed21f9a5dfb5f9384d9b148304830b8840
4.3 GB June 5, 2026
2026-06-05-1780618501-fdns_aaaa.json.gz
sha1:860931dfba775f5613c0d6fed0cbd6eb403d4fc5
11.5 GB June 5, 2026
2026-06-05-1780617972-fdns_ns.json.gz
sha1:37c0a7b8a80fc26db60467b8fde0f7afb3a18242
17.1 GB June 5, 2026
2026-06-01-1780273985-fdns_txt_mx_mta-sts.json.gz
sha1:7690e63e3285935b233c0e300003770f57f7abbf
22.4 MB June 1, 2026
2026-06-01-1780272924-fdns_txt_mx_dmarc.json.gz
sha1:16cf9e6b062da67045002bcd54cd0e7e210bf256
78.0 MB June 1, 2026
2026-05-30-1780129834-fdns_ns.json.gz
sha1:20b09da9d6fea118f5a1612a94d6532f2f7c1b22
17.7 GB May 31, 2026
2026-05-30-1780123315-fdns_a.json.gz
sha1:cccfc35df4258275aff8aac41516564113804132
38.0 GB May 31, 2026