WHOIS Lookup

// What is tested

• Registration data for a domain or an IP address, retrieved over RDAP, the structured protocol that replaced free-text WHOIS.
• The handle, object type, status codes, and the creation, last-changed and expiry dates the registry publishes.
• For IP queries, the allocation record: the range and the organisation the block is assigned to.

// Data sources

rdap.org

A bootstrap service that routes each query to the authoritative RDAP server for that domain or IP, meaning the relevant registry or registrar, and returns its response. The data originates with the registry, not with rdap.org.

// Limits

• Registrant contact details are redacted for most domains under UK GDPR and equivalent privacy regimes. Absence of a name is normal and says nothing about the domain.
• Not every top-level domain operates an RDAP service, and some registries publish a thinner record than others. Coverage is uneven by design of the registry system, not of this tool.
• Status codes describe registry-level restrictions and are frequently misread. clientTransferProhibited, for example, means the owner has transfer locking switched on. That is a protective setting, not a problem.
• Data freshness depends entirely on the registry. This tool adds no caching of its own.