Network Tools
Look up IP addresses, DNS records, WHOIS registration and SSL certificates, check domain availability, validate email and detect VPNs and proxies.
Tools in Network Tools
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What Is My IP
See the public IP address your connection is using right now, along with your provider, con…
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IP Address Lookup
Look up any public IP address: country, region, city, coordinates, time zone, currency, and…
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DNS Lookup
Look up live DNS records for any domain — A, AAAA, MX, NS, TXT, SPF, CNAME and SOA. Queried…
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WHOIS Lookup
Look up a domain's registration record: when it was created, when it expires, which registr…
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SSL Certificate Checker
Inspect the live TLS certificate a domain serves: when it expires, who issued it, and exact…
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Domain Availability Checker
Check whether a domain name is free to register. Asks the registry directly, so a parked or…
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Email Validator
Check whether an email address can actually receive mail. Tests syntax, the domain and its…
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VPN & Proxy Detector
Check whether an IP address belongs to a VPN, proxy, Tor exit node, private relay or hostin…
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IP WHOIS Lookup
Find which organisation holds an IP block, the range it belongs to, and the registered abus…
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Subdomain Finder
Find subdomains observed for a domain, each with the dates it was first and last seen, so y…
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IP Reputation Report
One report covering an IP address: location, network, reverse hostname, threat signals and…
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ISP & Connection Type Lookup
Identify the provider behind an IP address and what kind of connection it is: residential,…
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Subnet Calculator
Work out the network, broadcast and usable host range for any IPv4 CIDR block, and split a…
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User Agent Parser
Paste a user-agent string to identify the browser, engine, operating system and device, and…
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IPv4 Calculator
Convert an IPv4 address between dotted, decimal, binary and hex, convert CIDR to a subnet m…
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IPv6 Calculator
Expand or compress an IPv6 address to RFC 5952 form, work out prefixes and subnet counts, b…
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Port Checker
Check whether a TCP port on a public host accepts connections from outside your network, an…