RDAP Lookup
ServerStructured domain registration data — the modern WHOIS.
How it works
RDAP (Registration Data Access Protocol) is the modern, JSON-based replacement for WHOIS. It returns clean, structured data straight from the registry — more reliable and consistent than parsing WHOIS text.
Try an example
About the RDAP Lookup
RDAP is the modern, structured successor to WHOIS. This free RDAP lookup returns clean, machine-readable registration data — registrar, dates, nameservers, DNSSEC and status — for any domain, in a consistent format that's easier to read than classic WHOIS.
Queries go to official RDAP servers.
Why use RDAP over WHOIS
- Structured, consistent output instead of free-form text.
- Standardised status codes and dates.
- The official direction registries are moving toward.
What an RDAP response contains
- The registrar and its IANA ID.
- Registration, expiry and last-updated dates in ISO format.
- Nameservers and DNSSEC status.
- Standardised EPP status codes (like clientTransferProhibited).
Frequently asked questions
What is RDAP?
The Registration Data Access Protocol is the standardized, JSON-based replacement for WHOIS, giving consistent, structured domain registration data.
How is RDAP different from WHOIS?
WHOIS returns free-form text that varies by registry; RDAP returns structured data with standard fields, making it more reliable to read and parse.
Does RDAP show contact details?
Like WHOIS, personal contact data is usually redacted for privacy, but registrar, dates, nameservers and status are available.
Is RDAP replacing WHOIS?
Yes. ICANN has been transitioning the industry from WHOIS to RDAP, which returns the same registration data in a standard JSON format that's consistent across registries and easier for tools to consume.
Can RDAP look up IP addresses too?
The protocol supports IP and ASN queries as well as domains, though this tool focuses on domain registration data. For IPs, our IP Lookup and reverse-DNS tools are usually what you want.