harleo/knockknock

A simple reverse whois lookup tool which returns a list of domains owned by people or companies

KnockKnock

KnockKnock runs a simple reverse whois lookup which returns a list of domains owned by people or companies.

This tool is often used for reconnaissance or OSINT (Open Source Intelligence) purposes.

Please note that the results can also contain domains that are not owned by the particular target, whereas the target represents a whois guard.

Installation

go install github.com/harleo/knockknock@latest

This tool requires golang

Options

Usage:
  -n string
        Registrant name, email or domain name of the target (Required)
  -o string
        Output file to write results to (default "domains.txt")
  -p    Print results

Example

$ knockknock -n google.com -o google.txt -p

[:] Sending query...
028-hty.com | 2016-05-20 | DROPCATCH.COM 883 LLC
04plan.com | 2020-04-04 | GABIA, INC.
--- snip ---
[:] Writing 500 domain(s) to file google.txt...
[:] Done.

Disclaimer

This tool must use an external API such as ViewDNS.info (which is subject to rate limiting and a maximum of 500 domains per query) to retrieve relevant data. Also note that the API uses Cloudflare, queries from cloud IPs may be blocked and require captcha verification whereas residential IPs are able to pass.

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© github.com/harleo

knockknock's Issues

Compilation error

First of all thanks for your tool, there is now a compilation error because the dependency you use (goquery) has had a name change :
go get: github.com/puerkitobio/goquery@none updating to
github.com/puerkitobio/[email protected]: parsing go.mod:
module declares its path as: github.com/PuerkitoBio/goquery
but was required as: github.com/puerkitobio/goquery

Could you fix this in the project ?

Regards,

Code improvements/changes

I'm looking for some(one) to look at the code to add legitimate improvements or make performance changes.

Thanks :)

Third-party API unavailable

The third-party API provider (https://www.reversewhois.io/) used by the knockknock wrapper has introduced a mandatory captcha verification, rendering the tool useless as an automation. I'm looking for an alternative meanwhile.

Add feature: Multiple file saving formats

I'm looking for some(one) to add different file saving formats to the codebase.

For example:

• TXT
• Other formats; If you have more format ideas please share them.

If you'd like to help, please comment below and commit to the "dev" branch.

Thanks :)

No results after the latest update

Hey man!

After updating to the latest update no results are discovered, using domain name or even email address.

Hope this can be fixed soon. Thanks