TCP port check

Nearby workflows on Toolcore

• Random port generator — Pick a random TCP port in a min–max range for dev configs and fixtures—local CSPRNG. when headers, identifiers, or reference tables need a sibling check.
• HTTP fetch test — Send GET/POST and other methods from your browser—see status and body; CORS limits apply. when headers, identifiers, or reference tables need a sibling check.
• CIDR calculator (IPv4 & IPv6) — IPv4 or IPv6 CIDR: network, range, mask or prefix size—computed locally in your browser. when headers, identifiers, or reference tables need a sibling check.
• URL parser — Split URLs into protocol, host, path, query, and hash—browser URL API; optional https:// assumption; no fetch. when headers, identifiers, or reference tables need a sibling check.

Common use cases

• TCP port check for quick local checks without uploading data.
• Copy results into tickets, docs, or classroom notes.

Common mistakes to avoid

• Unexpected input shape

  See the intro and how-to notes for accepted formats.

FAQ