Look up DNS records and RDAP domain information with whois_, which supports common record types and network entities.
RDAP
Look up domain, IP, autonomous system, and entity records with RDAP.org RDAP-based lookup tool.
About RDAP
RDAP.org provides a web tool for looking up domain, IP, autonomous system, and entity records using RDAP. Queries are sent directly from the browser to the relevant registry's RDAP server over HTTPS, so only that registry sees the query unless the referral option is enabled, in which case the sponsoring registrar may also see it.
All generic TLDs support RDAP, but only a few ccTLDs have deployed it so far. Queries for ICANN-accredited registrars are sent to the registrars.rdap.org server because there is currently no bootstrap registry for them.
Key features
- Look up domain name records using RDAP
- Look up IP address records using RDAP
- Look up Autonomous System Number records
- Option to follow referral to registrar record
- Queries sent directly from browser over HTTPS
- Access to RDAP Validator to check responses
Best for: People who need to look up domain, IP, or ASN registration data via RDAP.
Good for
- Queries go directly from the browser to the registry over HTTPS
- Handles domain names, IP addresses, and Autonomous System Numbers
- Supports all generic TLDs
Watch out for
- Only a few ccTLDs have deployed RDAP so far
- No bootstrap registry for ICANN-accredited registrars
- Enabling referral lets the sponsoring registrar see the query
RDAP at a glance
- Website
- client.rdap.org
- Category
- Development › Domain, IP & DNS Lookup
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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RDAP FAQ
What happens if I enable follow referral to registrar's record?
If checked, the sponsoring registrar may also see your query when the registry provides a referral.
Which TLDs support RDAP?
All generic TLDs support RDAP, but only a few ccTLDs have deployed it so far.
What should I do about incorrect content in an RDAP response?
Contact the relevant registry or registrar, and use the RDAP Validator to check for issues.
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