Free Domain Lookup & Research Tools
Whether you are evaluating a domain purchase, auditing DNS configuration, or researching competitors, domain lookup tools give you the technical details registrars do not always surface in a search results page.
RollDomains offers a complete suite of free domain research utilities - from WHOIS and DNS propagation checks to subdomain discovery and reverse IP lookup. Use them before you register, transfer, or point nameservers to confirm ownership, expiry dates, and infrastructure setup.
Every tool runs in your browser with no account required. Pair these lookups with our domain search to find available names across 500+ TLDs at competitive prices.
14 free domain tools
WHOIS Lookup
Look up domain registration information.
DNS Lookup
Check DNS records for any domain.
DNS Propagation
Check DNS propagation globally.
Domain Age Checker
Find out when a domain was registered.
Domain Generator
Generate creative domain name suggestions.
Hostname Lookup
Resolve hostnames to IP addresses.
Subdomain Finder
Discover subdomains via DNS brute-force.
Domain Comparison
Compare two domains side-by-side.
Domain Expiry Checker
Bulk check domain expiry dates.
TLD Info Lookup
Info about any Top-Level Domain.
Nameserver Checker
Verify nameserver configuration.
WWW Redirect Checker
Check www vs non-www redirects.
Domain Authority
Estimate domain authority score.
Reverse IP Lookup
Find domains on the same IP.
Domain Tools FAQ
Related blog guides
Deep-dive articles that complement these free tools.
Help & how-to guides
Step-by-step answers for domain, DNS, and security tasks.
More free tool categories
Audit title tags, headings, alt text, canonicals, hreflang, internal links, and more with free on-page SEO checkers. Instant results, no signup.
Test page speed, Core Web Vitals, HTTP/2, compression, redirects, and crawlability with free technical SEO tools. No registration needed.
Analyze meta tags, robots.txt, sitemaps, keyword density, backlinks, schema markup, and readability with free SEO content tools.
Validate Twitter Cards, preview Open Graph tags, find RSS feeds, and audit social links on any page. Free social SEO tools, no signup.
Audit SSL certificates, security headers, malware, vulnerabilities, CSP, CORS, and TLS with free website security scanners. No account needed.
Verify SPF, DKIM, DMARC, MX, BIMI, CAA, and PTR records with free email and DNS authentication tools. Improve deliverability instantly.
Look up IP geolocation, ISP details, and network information with free network diagnostic tools. Instant IP lookup, no registration.
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