Check Domain
Check Domain is a web-based domain research tool that consolidates availability checks, WHOIS/RDAP record lookups, and registrar price comparisons into a single interface. Users can enter a brand name or full domain and select multiple top-level domains; the tool queries registry RDAP services directly rather than relying solely on DNS inference, improving confidence in availability status. For each result, Check Domain distinguishes between available, registered, and for-sale domains, and provides public WHOIS/RDAP records including registrar, dates, nameservers, and record source when available. The service also displays both first-year registration price and ongoing renewal price from multiple registrars, enabling a more accurate long-term cost assessment. The tool requires no account, stores no search history, and uses no tracking cookies, positioning itself as a privacy-conscious utility for quick domain research. It is accessible through a standard web browser and does not appear to offer an API or self-hosted version.
- Category
- AI Domain Name Generator
- Pricing
- Unknown
Problem solved
Domain buyers often have to check availability across multiple TLDs, dig through separate WHOIS lookups, and compare hidden renewal costs. Check Domain solves this by aggregating registry-backed availability checks, public record data, and registration vs. renewal pricing into one no-account workflow, reducing research time and avoiding DNS-only false confidence.
Use cases
- Check availability of a brand name across .com, .net, .org, .io, .ai, and other TLDs simultaneously
- Review WHOIS/RDAP records for an already registered domain
- Compare registration and renewal prices before choosing a registrar
- Identify whether a domain is available, registered, or listed for sale
- Quickly validate a domain name idea without creating an account
Audience
- Business Users
- Startups
- Product Managers
- Developers
- Hobbyists
Pros
- Uses registry RDAP checks for more authoritative availability results
- No account, search history, or tracking cookies required
- Compares both registration and renewal prices side by side
- Searches multiple TLDs in a single query
- Provides WHOIS/RDAP record details for registered domains
Cons
- No API or bulk search capability indicated
- Limited to supported TLDs and registry services
- Does not complete domain registration directly
- No saved search history or user account for repeat users
- Pricing information may vary by registrar and is not guaranteed
Official website: https://www.checkdomain.ai/
Canonical LambdaBase page: https://www.lambdabase.com/tools/check-domain