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 — 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, indicates the owner has transfer locking enabled — a protective setting, not a problem.
• Data freshness depends entirely on the registry. This tool adds no caching of its own.