Return server version and status.

Ping a host using TCP connect (port 80) as a non-root ICMP alternative.

Returns min/avg/max/jitter latency in milliseconds.

Trace the network route to a host.

Wraps the system traceroute command and parses output.

Resolve DNS records for a domain using dnspython.

Supported record types: A, AAAA, MX, CNAME, TXT, NS.

Perform a reverse DNS lookup for an IP address.

Check whether a single TCP port is open on a host.

Scan common TCP ports on a host.

Safety limits: max 100 ports, rate-limited to one scan per second.

Inspect the SSL/TLS certificate on a host.

Returns issuer, subject, expiry, SANs, and days until expiry.

WHOIS lookup for a domain using the system whois command.

Perform an HTTP request and return timing breakdown.

Returns status code, timing (DNS, connect, TLS, TTFB, total), response size, and headers.

Discover live hosts on a local subnet by probing common ports.

Only allows RFC 1918 private subnets for safety. Probes TCP ports 22, 80, and 443 on each host.

Get the public IP address of this machine.

Measure network download speed and latency.

Downloads a 10 MB test payload from Cloudflare and measures throughput. Also measures latency with multiple TCP connect pings. Returns download speed in Mbps and latency stats in milliseconds.

Check DNS propagation across multiple public resolvers.

Queries Google (8.8.8.8), Cloudflare (1.1.1.1), OpenDNS (208.67.222.222), Quad9 (9.9.9.9), and the system default resolver in parallel, then highlights any inconsistencies between them.

Supported record types: A, AAAA, CNAME, MX, TXT.