About Hostio Tools
Hostio Tools is a free, open collection of online utilities built for developers, system administrators, and network engineers. No account required for most tools.
What we offer
DNS & Domain Tools
DNS Lookup, Reverse DNS, Domain Check, WHOIS, and more
Network Utilities
IP Lookup, My IP, Subnet Calculator, Site Up/Down checker
Website Analysis
Security headers, SSL checks, performance scoring
Developer Tools
Paste bin with syntax highlighting and expiration
Privacy first
We don't sell your data. Lookup queries are logged only for rate-limiting and abuse prevention, and are automatically purged. No account is required to use most tools.
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