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
2026-03-04-1772582882-rdns.json.gz
00add67da4c2e92a04c86f825075ecfaf3aa8d8b
11.3 GB March 4, 2026
2026-02-25-1771978158-rdns.json.gz
0b1dbe74f86779ccc90c408360ac596f223a66d4
11.4 GB Feb. 25, 2026
2026-02-23-1771862281-rdns.json.gz
48bb586f5124ba5faf09ccd14b2ef713c0b5fbd4
11.1 GB Feb. 24, 2026
2026-02-11-1770768459-rdns.json.gz
e5c973761db479d781e818dad188e80e1ba3a2a1
11.4 GB Feb. 11, 2026
2026-02-04-1770163221-rdns.json.gz
30d7f911101cf5d25bf7b1e43580742c05543bbd
11.3 GB Feb. 4, 2026
2026-01-21-1768954095-rdns.json.gz
e71cf85c9328ae4512fabd39d33728ac384a28cd
11.2 GB Jan. 21, 2026
2026-01-14-1768349271-rdns.json.gz
be4c02406833c4f5e4be989b46c8602db2cc2b64
11.2 GB Jan. 14, 2026
2026-01-07-1767744456-rdns.json.gz
a2e7ede3e1892f6c57a6686db124796abb29f2ef
11.1 GB Jan. 7, 2026
2025-12-31-1767139651-rdns.json.gz
84ebf4ea487f113512c9fff663ea8d2d8867e3bb
11.2 GB Dec. 31, 2025
2025-12-24-1766534847-rdns.json.gz
0eb1eb0eb81e4fb97510f15dc6adbe0c22b93f52
11.2 GB Dec. 24, 2025