Acceptable use
You may use the tools for ordinary research, administration, troubleshooting and educational purposes.
Prohibited use
Do not automate bulk queries, scrape the service, harvest registration contacts, create spam or prospecting lists, bypass rate limits, enumerate domains, scan systems, test vulnerabilities, or use the service to infringe privacy or other legal rights.
Service availability
Lookups depend on third-party public services and may be delayed, incomplete, rate-limited or unavailable. Access may be limited when traffic appears automated or abusive.