Farsight DNSDB moved into DomainTools. If you just want the domain watch, signed.

Farsight Security, and its DNSDB passive-DNS database, was acquired by DomainTools; the deal was announced on 9 November 2021, and Farsight's data now lives inside the DomainTools platform rather than as a standalone product. (Source: DomainTools press release, 9 November 2021.)

Passive DNS, and the smaller question under it

DNSDB answered one big question extremely well: what has this domain resolved to over time, across a very large history. That is a real and hard problem. The daily question most teams face is smaller: what changed on the domains we care about, and when did it change. A watch and a dated record answer that one, at any size.

The focused, signed answer

DomainDrift reads a domain's public surface and records every change to its DNS, certificates, mail and hosting. It is a watch and a dated record of that surface. Each reading is signed the moment it is taken and dated on a public chain, so the answer to "what did this domain run on the day it mattered" is a record you can show someone.

A signature proves who took a reading and that it has not changed; the chain anchor proves when it existed. Correctness stays a separate question you check yourself, against keys we publish. Signing is added trust. See how to verify.

For a portfolio owner, a consultancy watching client estates, or a security team keeping an eye on vendors, that focus is the point. You get the domain and DNS observation part, priced for the job, with a record that verifies in your own browser.

Type any company at domaindrift.io and watch its domain get read apart, signed and dated. Looking is free; keeping the record is an account.