OPEN SOURCE / PUBLIC DNS

Find the tools behind the domain.

Turn public DNS into reviewable GTM technology signals without requesting company websites.

Get started in one command

No global install. Requires Node.js 20 or newer. See more commands

Run the sample like a real CLI.

Type a domain, press Return, and inspect the evidence printed in the terminal.

vendorprint - zsh

vendorprint sample session

vendorprint brightyard.example --findings-only --pretty

evidence:

80 bounded DNS attempts per domain

4 logical queries in flight per domain

0 company website requests

Every result separates what DNS proves, what the stack suggests, and what remains unknown.

URL / HOSTNAME

Normalize the company domain

Resolve messy account URLs to one registrable domain before any lookup begins.
MX / TXT / CNAME

Query a bounded record set

Check high-yield public records with hard limits on retries and concurrency.
VENDOR TARGET

Attribute the evidence

Match owned infrastructure, tracking targets, and verification proofs.
JSON / NDJSON

Return a reviewable profile

Keep the evidence, confidence, relationship, and caveat attached to every finding.

Strong matches stay direct. Compatibility stays a candidate. Missing records stay inconclusive.

Public observation Supported finding Relationship

MX → google.com Google Workspace Direct / high

CNAME → outrch.com Outreach tracking Direct / high

CNAME → mktoweb.com Adobe Marketo Engage CRM candidates

openai-domain-verification OpenAI domain relationship Direct / high

Stream NDJSON, resume interrupted jobs, and review every claim before it enters another system.