Public IP, local/private IP best-effort, ASN, provider, latency dots, VPN / Proxy likelihood, DNS summary.

Resolve a host or inspect an IP with PTR, provider, ASN, country, and range details.

Compare DNS answers from Google, Cloudflare, and Yandex with TTL and response time.

Structured ownership lookup for domains, IPs, and ASNs.

Native embedded browser speed test with local ping, download, and upload probes.

Real backend TLS connection with certificate details and validity window.

Partial-result audit across DNS, TLS, HTTP, ports, and ownership.

TCP port reachability for single ports, lists, and ranges up to 100 ports.

Honest path diagnostic with DNS, TCP, TLS, and HTTP timings — no fake traceroute.

Generate secure random passwords locally in the browser with copy and regenerate actions.

Build a corporate email login, address, and password locally from Russian first/last name.

Generate a QR code locally from text or a link, then download it as PNG.

Calculate host range, total hosts, CIDR bitmask, and netmask locally for IPv4 subnets.

Shrink a list of CIDR subnets into a shorter optimized result, with optional extra-IP tolerance.

Convert Windows route syntax and CIDR routes both ways, with one-click subnet shortening.