Tools

A growing set of small, focused network utilities. All tools run client-side in your browser — nothing is sent to the server.

Subnet Calculator WIP

IPv4/IPv6 subnetting with VLSM support, summary calculation and CIDR math.

RFC Search WIP

Full-text search across a curated index of relevant RFCs.

ASN Lookup WIP

Lookup ASN information, peering data and prefix statistics.

MTU Path Tracer WIP

Client-side helper for diagnosing MTU and PMTUD issues.

DNS Record Inspector WIP

Inspect DNS records with DNSSEC validation hints.

TLS Profile Checker WIP

Visualise the TLS handshake and supported cipher suites of a remote host.

Roadmap

Tools are released gradually. We prioritise correctness and clear documentation over visual polish — each tool ships with references to the relevant RFC sections.