WHOIS / RDAP Lookup
Look up public registration data, domain status, important dates and nameservers.
- Domain handle and status
- Creation, update and expiry dates where available
- Nameservers and registrar lock signals
Free diagnostic tools
DNS and Domain Tools
Use these free DNS tools to understand how a domain resolves, whether nameservers are responding correctly and whether public IP and reverse DNS records look healthy.
DNS and Domain Tools
Select a tool and run a live check with clear findings, recommendations and technical details.
DNS Lookup
Query public DNS records for a domain and explain what is present or missing.
- Selected DNS record values
- Missing record explanations
- Record-specific recommendations
DNS Propagation Checker
Compare answers from Cloudflare, Google and Quad9 resolvers.
- Resolver-by-resolver answers
- Consistency across resolvers
- Mixed or missing results
IP Lookup
Resolve domains to public IP addresses or check reverse DNS for an IP.
- A and AAAA records for hostnames
- Reverse DNS for IP addresses
- Public IP validation
Reverse DNS Checker
Check PTR records and reverse DNS guidance for public IPs.
- PTR result
- Hostname resolution
- Mail reputation guidance
