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WHOIS Search, Domain Name, Website, and IP Tools

Looks up WHOIS and RDAP registration data, DNS records, nameservers and domain history for any domain or IP address.

Actively maintained

SearchFree tier
who.is ↗
Open who.isAlternativesSet it up for my team
WHOIS Search, Domain Name, Website, and IP Tools: data, price, alternatives
  • Is it safe? We have not read the data policy of WHOIS Search, Domain Name, Website, and IP Tools yet. Read it on the official site before you upload anything.who.is ↗
  • Is it free? We have not read the prices of WHOIS Search, Domain Name, Website, and IP Tools yet; they are next in our queue. Until then, the official site has them.who.is ↗
  • What else does this? RDAP APISee ↓
At a glancechecked Oct 23, 2026

≈ 446kvisits/mo

Use not read yet · estimate, read Oct 23, 2026

For
Domain owners, researchers and investigators looking up domain registration and DNS data
Activity
Actively maintainedsite updated 12 days ago
How it runs
API
Used for
  • Look up registration and contact data for a domain
  • Monitor domains for downtime, DNS changes and certificate expiry
Worth knowingcomputed from what we read · each with its source
  • Has an MCP server (1 in the registry)public registry →
How a program reaches itfound, not claimed · read Oct 23, 2026
  • MCP serveris.who/whoisverified in the MCP registry
  • Stateanswers, requires sign-inchecked 2026-10-23
  • Address to connectapi.who.is/v1/mcp
  • API docswho.is/docs/apithe vendor's page ↗

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Not it? Say what you need

beta

Three tools from the Atlas for the job you describe, each with what fits and what does not.

From people who use itnot part of the reading

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Questions this page answers
  • What is WHOIS Search, Domain Name, Website, and IP Tools?

    Looks up WHOIS and RDAP registration data, DNS records, nameservers and domain history for any domain or IP address.

  • Who is WHOIS Search, Domain Name, Website, and IP Tools for?

    Domain owners, researchers and investigators looking up domain registration and DNS data

  • Is WHOIS Search, Domain Name, Website, and IP Tools still maintained?

    Actively maintained: site updated 12 days ago.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk