Domain Tools
Search, inspect, analyze, and generate domains using RDAP and DNS.
Domain Availability Search
Check registration status through authoritative RDAP.
Open tool →Bulk Domain Availability Checker
Check pasted domain lists and export availability results.
Open tool →WHOIS / RDAP Lookup
Inspect registrar, status, dates, and nameservers.
Open tool →DNS Lookup
Inspect web, mail, TXT, CAA, and SOA records.
Open tool →Domain Age Checker
Estimate registration age and lifecycle dates.
Open tool →Nameserver Checker
Verify NS delegation and resolved IP addresses.
Open tool →Domain Name Generator
Generate brandable domain ideas in bulk.
Open tool →SPF Record Checker
Explain sender authorization policies and warnings.
Open tool →DMARC Record Checker
Review email enforcement and reporting policy.
Open tool →DKIM Record Checker
Validate a selector and published email signing key.
Open tool →Email DNS Health Checker
Check MX, SPF, DMARC, and enforcement together.
Open tool →Email Header Analyzer
Inspect SPF, DKIM, DMARC, sender alignment, and delivery hops.
Open tool →SSL Certificate Checker
Check certificate validity, expiry, hostname coverage, and TLS details.
Open tool →CAA Certificate Policy Checker
Inspect permitted TLS certificate authorities.
Open tool →Domain Typo & Brand Protection Generator
Generate common typo variants for defensive review.
Open tool →About Domain Tools
Domain tools help investigate names, registration data, DNS records, availability, SSL details, redirects, and related infrastructure signals. They are useful when comparing possible brand domains, checking whether records have propagated, troubleshooting email or website routing, and documenting the public configuration of a host. Results can change quickly because registries, RDAP services, resolvers, caches, and certificate endpoints update on different schedules.
Treat availability as a moment-in-time check, not a reservation, and purchase only through an accredited provider after reviewing price, renewal terms, and trademark risk. Public registration data may be privacy-redacted. DNS changes can appear differently across networks until caches expire, so confirm important results with an authoritative provider. Each tool page explains the source, expected input, and limits of the result instead of presenting a lookup as legal or ownership advice.