Are these tools really free?

Yes — every tool on this page is free to use, unlimited, with no signup or credit card. They run instantly in your browser against our servers.

Do you store or log my lookups?

No. Queries (WHOIS, DNS, IP, SSL, etc.) run on demand and are not saved to your account or sold. We only keep standard, short-lived server logs for abuse prevention.

Can I use them for any domain, server or IP?

Yes. The lookups query publicly available data (DNS, WHOIS, TLS certificates, RDNS, blacklists). Please only test systems you own or are authorised to check.

Do I need a TOSHOST account?

No account is required for the tools. An account is only needed if you decide to buy hosting, a VPS or a dedicated server.

How current is the data?

Results are fetched in real time from authoritative sources at the moment you run each check, so they always reflect the live state.

17 free tools · No signup

The webmaster & sysadmin toolbox

Everything you need to diagnose a domain, server or network — fast, free, and right in your browser.

Domain & DNS

3 tools

Domain WHOIS Ownership, registrar & expiry for any domain. DNS Lookup A, AAAA, MX, TXT, NS, CNAME & SOA records. Reverse DNS / PTR Resolve an IP back to its hostname.

Network & Server

4 tools

IP Lookup Geolocation, ISP & ASN for any IP address. HTTP Header Checker Inspect response headers, status & redirects. Port Checker Test if common or custom ports are open. Website Up / Down Check if a site is online and its response time.

Security

4 tools

SSL Certificate Checker Issuer, validity, expiry & SANs of any HTTPS site. HTTP Security Headers Grade a site’s security headers (HSTS, CSP & more). Blacklist Checker See if an IP is on common spam blacklists. Password Generator Strong, configurable passwords — generated in-browser.

Developer Utilities

6 tools

Hash Generator MD5, SHA-1, SHA-256 & more, instantly. Base64 Encode / Decode Convert text to and from Base64. Subnet / CIDR Calculator Network, broadcast, mask & host range. JWT Decoder Decode and inspect JSON Web Token claims. Cron Expression Helper Translate cron syntax to plain English. UUID Generator Generate v4 UUIDs in bulk, instantly.

Free Tools FAQ

Questions, answered

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