Terms of Use

Applies to the tools at zrina.app · Last updated: November 2026

These terms apply to HostVitals, Download Time Calculator, Subnet & CIDR Calculator, JSON Formatter, Unix Timestamp Converter, Cron Explainer, Network & IP Inspector, UUID Inspector, Network Planner, QR Code Generator, Password Generator, Base64 Encoder / Decoder, Regex Tester and Unit Converter (the “Tools”). By using a Tool, you agree to use it lawfully and in accordance with these terms.

Informational tools; no warranty

The Tools provide calculations, conversions or diagnostic information for general informational purposes. Results may be incomplete or inaccurate and are not professional, security, availability or operational advice. The Tools are provided “as is” and “as available,” without a guarantee of uninterrupted service or error-free results. Verify important results independently.

Acceptable use

Do not use the Tools to violate laws, infringe others’ rights, disrupt services or send abusive automated requests. You are responsible for the URLs and data you submit and for having authorization to test any system you check. HostVitals’ checks are limited observations and do not establish that a website is available or unavailable to everyone.

Network Planner and identifier results are informational only. Network plans do not verify live infrastructure or provider quotas. UUID, ULID, ObjectId and Snowflake values can reveal creation times; do not use time-based identifiers as secrets or authentication tokens.

Third-party services

Some features rely on third-party services, including public DNS, status gateways, IP information and a public STUN server when you choose to run the WebRTC check. Those services operate under their own terms and privacy policies. See the Tools Privacy Policy for details.

Availability and liability

Features may change or be unavailable. To the extent permitted by applicable law, zrina.app and its operator are not liable for indirect or consequential loss arising from use of, inability to use, or reliance on a Tool. Nothing in these terms excludes liability that cannot lawfully be excluded.

Contact

Questions about these terms: [email protected].