Internet tools directory
34 free tools for checking your IP address, speed, DNS, privacy and websites. Every tool is labelled with its real status so you know exactly what to expect.
Fully functional 12 · Runs entirely on this website or in your browser.
Functional with limitations 12 · Works, but there are technical limits explained on the page.
Uses an external service 7 · Relies on a third-party API that may be rate-limited or temporarily unavailable.
Requires a separate server 3 · Cannot run reliably on shared hosting or in a browser. See the page for the planned approach.
IP Address Tools
Find, look up and understand IP addresses, ISPs and networks.
What Is My IP Address?See your public IPv4/IPv6 address, ISP and approximate location.Fully functionalIP Address LookupFind the network, ASN and approximate country of any public IP.Uses an external serviceISP LookupIdentify the internet service provider behind an IP address.Uses an external serviceASN LookupLook up an Autonomous System Number: name, owner, registry and abuse contact.Uses an external serviceIPv4 Address CheckerCheck IPv4 connectivity and validate any IPv4 address.Uses an external serviceIPv6 TestCheck whether your connection supports IPv6.Uses an external serviceReverse IP LookupHostname of an IP, with optional list of domains hosted on it.Functional with limitations
Speed & Network Tools
Measure speed, latency and stability, and query the Domain Name System.
Internet Speed TestMeasure download, upload, ping and jitter.Functional with limitationsPing / Latency TestMeasure round-trip latency to our server from your browser.Functional with limitationsJitter TestMeasure how stable your latency is over time.Functional with limitationsDNS LookupQuery A, AAAA, MX, NS, TXT, CNAME, SOA, CAA and more.Fully functionalDNS Propagation CheckerCompare a record across 8 major public resolvers.Functional with limitationsReverse DNS LookupFind the PTR hostname of an IPv4 or IPv6 address.Fully functionalDNS Comparison ToolBenchmark public DNS resolvers from your own browser.Functional with limitationsTraceroute ToolTrace the network path to a host (needs a dedicated probe server).Requires a separate serverPacket Loss TestDetect failed or timed-out requests over 30 seconds.Functional with limitations
Security & Privacy Tools
See what your browser and connection reveal, and check reputation lists.
VPN / Proxy DetectionIndicators that your connection goes through a VPN or proxy.Functional with limitationsWebRTC Leak TestSee which IP addresses WebRTC exposes to websites.Fully functionalDNS Leak TestIdentify which DNS servers handle your lookups (needs a dedicated DNS server).Requires a separate serverIP Blacklist CheckCheck an IPv4 address against public DNS blocklists.Functional with limitationsBrowser Privacy CheckSee what your browser reveals and which protections are on.Fully functional
Website & Domain Tools
Check how a website responds, its certificate, headers and DNS/email setup.
Website Speed TestServer response timing: DNS, connect, TLS, TTFB, size.Functional with limitationsSSL Certificate CheckerValidity, expiry, issuer, SANs and TLS version.Fully functionalHTTP Headers CheckerSee response headers, redirects and security headers.Fully functionalWebsite Uptime CheckerIs a website down for everyone or just you?Functional with limitationsDomain DNS InformationAll key DNS records for a domain in one report.Fully functionalWHOIS / RDAP LookupRegistration data for domains, IP blocks and AS numbers.Uses an external serviceEmail Security CheckerCheck SPF, DKIM, DMARC, MTA-STS and BIMI.Fully functionalPort Availability CheckerCheck if a port on your own IP is reachable (needs a dedicated server).Requires a separate server
Calculators & Utilities
Subnet maths, hardware vendor lookups and device information.
IPv4 Subnet CalculatorNetwork, broadcast, host range and mask from any IP/CIDR.Fully functionalCIDR CalculatorConvert IP ranges to CIDR blocks and inspect IPv6 prefixes.Fully functionalMAC Address Vendor LookupIdentify the manufacturer from a MAC address.Uses an external serviceBrowser InformationYour browser, OS, screen, language and capabilities.Fully functionalInternet Connection Health ReportRun 17 checks and get a scored, printable report.Functional with limitations