DNS IPv4 PTR responses

Study Details

Study

Reverse DNS (RDNS)

Author

Project Sonar | Rapid7

Contact

Rapid7 Labs

Dataset Details

This dataset includes the responses to the IPv4 PTR lookups for all non-blacklisted/private IPv4 addresses.

Dataset Schema

Full Dataset Listing

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File Name SHA1-Fingerprint Size Updated At
2026-08-05-1785888326-rdns.json.gz
sha1:6933222fb1bc81e56012c1a41d0f850cef196cf5
11.2 GB Aug. 5, 2026
2026-07-29-1785283543-rdns.json.gz
sha1:5af3efdacd64c164aebdddbc89c0b7ce11db189c
11.2 GB July 29, 2026
2026-07-22-1784678808-rdns.json.gz
sha1:55274ff77e8d3dfa735f00ca3f5ffc6c877d2cf2
11.2 GB July 22, 2026
2026-07-15-1784074039-rdns.json.gz
sha1:a5b923200409d171afd6d02c82a673af66bdbb1a
11.2 GB July 15, 2026
2026-07-08-1783469238-rdns.json.gz
sha1:7f42fed1135c3333f18847329227c80474c792a8
11.1 GB July 8, 2026
2026-07-01-1782865455-rdns.json.gz
sha1:1fb8bc36dec095e765d1aef2091864b6e53631bb
11.1 GB July 1, 2026
2026-06-24-1782259644-rdns.json.gz
sha1:dd32e4260a779a2ce3a9e3f59cb48241991d5aeb
11.0 GB June 24, 2026
2026-06-17-1781654799-rdns.json.gz
sha1:41256c106b9894d78561c703c4f8d9665a61c4ab
11.0 GB June 17, 2026
2026-06-10-1781050075-rdns.json.gz
sha1:f4d94c61cfa5b8a860cda747864de90bca8577da
11.0 GB June 10, 2026
2026-06-03-1780445169-rdns.json.gz
sha1:20876158d0721eb5a1ffc00940e19fd85dca040d
11.0 GB June 3, 2026