DNSDB Scout is a GUI for the DNSDB® API within the Google Chrome and Mozilla Firefox browsers or available as a Web Edition

DNSDB Scout supports all the major features of the DNSDB API including:

  • Dashboard: Make DNSDB queries from your browser and keep a local history of queries you’ve previously made.
  • API Status: Tracks, displays, and updates your API key usage automatically.
  • Time Fencing: DNSDB serves as a post-attack "time machine" or "black box" flight recorder for the Internet. You can see data just from today or go back to any time since 2010.
  • Punycode support: Automatic Conversion of Internationalized Domain Names (IDN).
  • Limit Record Types: DNSDB contains a vast number of DNS records. Only need MX records or AAAA records? Limit your queries to only get the results you need.
  • Crisp UX Design: Supports Table Sorting and Paginated Results.
  • Tailored Output: Plaintext, JSON, CSV - select how you want your Passive DNS data exported and made available for additional processing later.

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New DNSDB Features

DNSDB Scout Offset Feature DNSDB Scout Offset Feature
DNSDB Scout De-aggregate Feature DNSDB Scout De-aggregate Feature
DNSDB Scout Summarize Feature DNSDB Scout Summarize Feature


1. What happened to the user interface at https://www.dnsdb.info/ and https://my.farsightsecurity.com/?

These UIs have been retired effective, 8/31/20. Going forward, please use DNSDB Scout for your investigations, https://scout.dnsdb.info

2. How do I export query results in DNSDB Scout?

After running a query, and while viewing the results table, there are two export options that are available that appear above the results table: CSV and JSON.
- To export the current table results as a CSV, click the green CSV button.
- To export the current table results as a JSON, click the purple JSON button.

3. How do I see queries I have already made?

The ‘Recent Queries’ tab shows a history – and results – of the queries you’ve made. Click any of the expandable entries for more details about the query.

4. If I re-run a query, does it count against my query quota?

Yes. Re-running a query asks the server to process a new query with the same parameters and return fresh results.

5. Can I use my query history instead of re-running queries?

Yes. However, query history is a local cache of your query data stored in your Web browser. Results may be stale if you’re referring back to them down the road.

6. Which Farsight API keys can I use with DNSDB Scout?

1. If you have an existing DNSDB API key, you can simply drop it into Scout and use it within that interface. DNSDB Community Edition keys also work with DNSDB Scout.
2. If you don’t have an DNSDB API key get a free 30day trial by clicking the link above.

7. What are the prerequisites for using DNSDB Scout for Firefox?

To use the DNSDB Scout Extension you must first have the Mozilla Firefox web browser installed on your system. DNSDB Scout should work on any operating system that can run an up-to-date version of Firefox with native extension support. Unfortunately, that means iOS isn't supported at this time.

You also need a valid DNSDB API key. DNSDB API keys are portable, so if you already have one, you are ready to go. You can also sign up for a 30-day free trial right form within DNSDB Scout, or by visiting https://www.fasightsecurity.com/trial-api/

8. How do I install DNSDB Scout for Firefox?

As with all current Mozilla Firefox extensions, they must be obtained and installed via the official Mozilla Add-ons site.

You can search the site for 'DNSDB' or 'Farsight', or by visiting https://addons.mozilla.org/en-US/firefox/addon/farsight-dnsdb-scout/

9. Are there any limitations with DNSDB Scout for Firefox?

Since a Mozilla Firefox extension runs inside your browser, it competes for system resources just like any other browser window or tab.

The maximum number of results a DNSDB API call can return is 1,000,000. In order to manage browser performance responsiveness, DNSDB Scout for Firefox has a maximum limit of 50,000 results.