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RDAP API

Returns domain registration, registrar and nameserver data as uniform JSON, including for TLDs that lack their own RDAP servers.

From $9/moActively maintained

For developers
rdapapi.io ↗
Open rdapapi.ioAlternativesSet it up for my team
RDAP API: data, price, alternatives
At a glancechecked Oct 26, 2026

≈ 1visits/mo

Little sign of use · estimate, read Oct 15, 2026

For
Developers replacing whois lookups with clean JSON RDAP data in their code
Price
From $9/mopricing page, read Oct 21, 2026Trial & discounts: 7-day free trial
Activity
Actively maintainedrelease 10 days ago · site updated 8 days ago
Company
French SARLprivacy policy
How it runs
APISDK
Used for
  • look up registration dates and nameservers for domains
  • pull registrar contact data for a domain
  • add registration fields to a domain dataset in bulk
read off rdapapi.io on Oct 21, 2026
Worth knowingcomputed from what we read · each with its source
Pricingpricing page, read Oct 21, 2026

From $9/mo

Trial & discounts 7-day free trial

pricing page

Price Watch: every price change in the Atlas, weekly

Your datawhat they publish, each line with its page · read Oct 21, 2026

These are RDAP API's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.

How a program reaches itfound, not claimed · read Oct 21, 2026

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 RDAP API?

    Returns domain registration, registrar and nameserver data as uniform JSON, including for TLDs that lack their own RDAP servers.

  • Who is RDAP API for?

    Developers replacing whois lookups with clean JSON RDAP data in their code

  • How much does RDAP API cost?

    Paid plans start at $9/mo, per RDAP API's pricing page on 2026-10-21.

  • Is RDAP API free?

    No. Its pricing page showed no free plan on 2026-10-21.

  • Do people use RDAP API?

    Little sign of use: ≈ 1 visits/mo · estimate, 2026-10.

  • Is RDAP API still maintained?

    Actively maintained: release 10 days ago · site updated 8 days ago.

  • Who owns RDAP API?

    RDAP API is run by French SARL, per its privacy policy (2026-10-21).

  • Is RDAP API safe?

    We do not audit vendors. What RDAP API publishes, read 2026-10-21: GDPR stated on its DPA.

  • Does RDAP API have a free trial?

    Yes, a 7-day free trial, per its pricing page (2026-10-21).

  • How do I cancel RDAP API?

    In its own words (terms of service, 2026-10-21): “You may cancel your subscription at any time through the billing portal.”

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