How RDAP domain availability checks work
RDAP is the modern registration data protocol used by many domain registries. An authoritative domain response indicates a registration, while an authoritative not-found response can indicate that no registration currently exists.
NameFinder keeps failures conservative: timeouts, rate limits, and unsupported signals become unknown rather than available. This reduces false confidence but cannot reserve a domain.
Real RDAP Verification
Every name is verified live against official WHOIS/RDAP registries across .com, .io, .ai, .dev, and .app — no stale, cached guesses.
Multi-Namespace Handles
Check matching social handle availability across GitHub, npm, YouTube, X, and Instagram in one pass alongside your domain search.
Honest Registrar Prices
Transparent wholesale prices directly from Porkbun, Namecheap, and Cloudflare — zero affiliate price markups or registration traps.
Frequently Asked Questions
Does an RDAP 404 mean a domain is available?
From an authoritative registry RDAP endpoint, a not-found response indicates no domain object was observed. Registrar eligibility, premium status, and checkout availability still need confirmation.
Why does NameFinder show unknown?
Unknown protects against false availability when a registry times out, rate-limits, lacks a usable RDAP endpoint, or returns an ambiguous response.