Network Tools

Look up the ASN, ISP, and organization for an IP address.

Look up IP geolocation, ISP, and ASN details.

Map an IP address to city, coordinates, timezone, and ISP.

Check an IPv4 address against common DNS blocklists.

Check whether IPv4 and IPv6 connectivity work.

Identify the ISP and ASN for an IP address.

Show your public IP address.

Show browser, OS, screen, and device details.

Show your browser user-agent string and related flags.

Look up CNAME DNS records for a hostname.

Query A, AAAA, MX, TXT, NS and more via DNS-over-HTTPS.

Compare DNS answers across multiple public resolvers.

Check DS/DNSKEY records and DNSSEC AD flag for a domain.

Look up MX (mail exchanger) DNS records for a domain.

Look up NS (nameserver) DNS records for a domain.

Resolve IP addresses to hostnames via PTR records.

Look up TXT DNS records for a hostname.

Check the DMARC policy at _dmarc.domain.

Find and parse the SPF TXT policy for a domain.

Check which DNS resolvers you use.

Compare HTTPS and WebRTC IPv6 visibility for leak hints.

Heuristic VPN/hosting detection from ISP and org metadata.

Detect local and public IPs exposed via WebRTC.

Estimate domain age from the RDAP registration event.

Check if a domain name looks available.

Check domain expiry date from RDAP when published.

Look up the registrar and related RDAP entities for a domain.

Look up domain registration data via RDAP.

Check a domain against common DNS-based blocklists.

Inspect response headers for a URL.

Follow redirects and list the chain.

Check if a website is reachable.

Measure download, upload, and latency.

Estimate HTTP latency jitter and loss with multiple probes.

Estimate HTTP probe loss with repeated requests.

Measure latency to a host.

Check if a TCP port is open.

Test whether a remote TCP host:port accepts connections.

Trace network hops to a host.

Connect to a WebSocket URL and echo a test message.

Inspect SSL/TLS certificates for a domain.