Are these network tools free?
Yes. All network tools are free with no sign-up required.
Free • No Signup
Network Tools
Free online network tools to look up IP addresses, Whois records, DNS records, HTTP headers, SSL certificates, and user agents. These tools query public network data sources to return live results, so they require a network request.
Frequently Asked Questions
Do these tools work offline?
No. Network tools must query public network, DNS, registry, or certificate data sources to return live results, so they require an internet connection.
What can I look up?
You can look up IP details, Whois records, DNS records, HTTP response headers, SSL/TLS certificate details, and parse user-agent strings.