Curated utility library

Reference

Developer references for HTTP status codes and TCP/UDP port numbers across API debugging, website troubleshooting, firewall configuration, and security audits.

2 tools HTTP Status Code Reference Port Reference

2 tools

HTTP Status Code Reference

Search HTTP status codes by number, phrase, category, source, and troubleshooting context for APIs, websites, proxies, CDNs, redirects, authentication errors, rate limits, and gateway failures.

Open tool

Port Reference

Search common TCP and UDP ports by number, protocol, service name, risk level, and exposure guidance for network configuration, firewall review, debugging, and security auditing.

Open tool