See your infrastructure
the way the world sees it

Check whether a website is reachable from the probe. Follows redirect chains, inspects SSL/TLS certificates, measures response time, and audits HTTP security headers including HSTS, CSP, and X-Frame-Options.

Send ICMP ping packets from the probe to any IPv4 address or hostname. Reports per-packet round-trip time, average latency, packet loss, and jitter. Choose packet count and size for tailored tests.

Test whether a specific TCP port is open on a target IPv4 address. Covers web, mail, remote access, FTP, DNS, database, and Oracle/WebLogic ports. Instant open/closed/timeout result with response time.

Look up DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA) using multiple DNS providers simultaneously. Compare results, query in recursive or authoritative mode, and verify DNSSEC signatures.

Calculate network address, broadcast, host range, subnet mask, and wildcard mask for any IPv4 CIDR block. Visualise bits in binary and split networks into subnets. Runs entirely in your browser — no probe needed.

Instantly detect your public IP address as seen by the probe. Shows your direct connection IP and any forwarded proxy IP, detects proxy headers, and indicates likely VPN or proxy usage. Detected IP is saved for other tools.

Look up geographic location, ISP, and ASN for any IPv4 address using local MaxMind GeoLite2 databases. Detects Tor exit nodes, known datacenter and VPN ASNs, and optionally resolves the reverse DNS hostname (PTR).

Verify a domain's email authentication configuration. Checks SPF policy and DNS lookup count, discovers DKIM keys across common selectors, and parses DMARC with policy enforcement level analysis.