Free domain tools.
No login, no limits.
A growing set of free tools for domain investors, founders, and anyone with a portfolio. Run them once, then keep everything in sync with Lemon Domains.
No credit card. Free for personal portfolios.
Portfolio
Bulk domain & expiry checker
Paste up to 50 domains and get expiry dates, registrar, and status in one go. Powered by RDAP.
Domain renewal cost calculator
Add your domains and see total annual renewal cost, broken down by TLD, with a multi-year projection.
Portfolio value estimator
Get a rough aggregate value for your whole portfolio at once, not one domain at a time.
Drop-or-renew decision tool
Answer a few questions per domain and get a clear keep, review, or drop recommendation.
Research
Diagnostics
WHOIS lookup
See a domain's registrar, registration and expiry dates, status, and nameservers, live from RDAP.
DNS lookup
Check A, AAAA, CNAME, MX, TXT, NS, SOA, and CAA records for any domain in real time.
SSL certificate checker
Check a domain's TLS certificate: issuer, validity, days to expiry, covered hostnames, and trust.
Email deliverability checker
Verify MX, SPF, DKIM, and DMARC records and get an email setup score for any domain.
TLD price directory
Registration, renewal, and transfer pricing for every major extension, with the renewal trap called out.
Tools are nice. A living portfolio is better.
Run a tool, then import the results into Lemon Domains and keep them fresh automatically.