⟨ BLOGPLAYBOOKSCOMPANY INTELLIGENCE

Domain ownership and age check for a list of domains

WHOIS registration date, registrar and registrant organization pulled for every domain in a CSV, young or masked domains flagged, and the CSV returned with the columns added.


The problem this solves

A domain says more than it seems. A company whose domain is three months old is either brand new or hiding something; a domain registered to a different organization than the one on the website is worth a second look; a registrant that matches a known parent company confirms an ownership structure that the website never mentions. For fraud screening, partner due diligence and simple account research, the registration record is the cheapest fact to check and the one most often skipped.

Checking it for a whole list by hand means a lookup per domain in a browser and copying dates into a spreadsheet. The Company Intelligence Agent runs the lookups through WHOIS data, appends the fields, applies the flags you care about, and hands the CSV back in the shape it arrived, ready for whichever review process it feeds.

How the mission runs

  1. Read the domains. The agent reads the attached CSV, identifies the domain column, normalizes entries - stripping protocols, paths and www - and dedupes repeated domains so each is looked up once.
  2. Pull the WHOIS record. For every domain, WHOIS data supplies the registration date, the last update, the expiry, the registrar and the registrant organization where it is public. Privacy-masked records are recorded as masked rather than left blank.
  3. Apply the flags. Domains younger than one year are flagged as young, masked registrants as masked, and domains whose registrant organization differs from the company name on the row as mismatched, with the difference shown so a reviewer can judge it.
  4. Return the CSV. The original file comes back with the WHOIS columns and flag columns appended and the original columns untouched, plus a summary of how many domains were young, masked or mismatched.

The prompt

This is the exact objective the agent receives. Swap the obvious placeholders for your own domain, segment or channel and run it as-is from the console, Slack, or the API.

⟨ THE MISSION PROMPT · PASTE AND RUN ⟩

For every domain on the attached CSV, pull the WHOIS registration date, registrar and registrant organization where public, flag domains younger than one year or with masked ownership, and return the CSV with the columns added.

What comes back

The attached CSV with registration date, last update, expiry, registrar and registrant organization appended for every domain, flag columns for young, masked and mismatched registrations, and a summary of the counts by flag. Domains that could not be looked up are marked with the reason rather than left empty.

Make it yours

  • Add firmographics - headcount, industry, HQ - in the same pass so the review has the company beside the record.
  • Change the age threshold to six months or two years to suit the review.
  • Run it against the domains on a saved list or a CRM segment instead of a CSV.
  • Schedule a re-check so expiring domains on the list are flagged before they lapse.
  • Cross-check the registrant organization against the company's legal name from firmographic data and flag mismatches automatically.

Frequently asked questions

Why are so many registrants masked?

Most registrars offer privacy protection and many companies use it; a masked record is normal and is reported as a fact rather than a warning on its own. The young and mismatched flags carry more weight.

Does it work for every top-level domain?

Coverage varies by registry; some country-code domains publish less. The row records what the registry returned and marks fields the registry does not publish.

Can it identify related domains under the same registrant?

Where the registrant is public, ask for related domains and the agent lists other domains registered to the same organization, which often reveals brands and subsidiaries.

Can it show the domain's hosting and mail provider?

Yes. Ask for infrastructure and the row gains the hosting provider and mail service detected, which helps confirm that the domain is in real use.

Is the registration date the company's founding date?

Rarely. Domains are often registered before or long after founding; the flag is a prompt for review rather than a claim about the company's age.

Go deeper

⟨ RUN IT INSTEAD OF READING IT ⟩

This mission runs minutes after signup.

Open a workspace, paste the prompt, and the Company Intelligence Agent carries it end to end on your plan's monthly credits - evidence attached.

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