Network tool
TCP port checker
Test whether a TCP port is open on a host. This is a real TCP handshake from the network edge — not an ICMP ping.
Common ports: 22 (SSH), 25/465/587 (SMTP), 80 (HTTP), 443 (HTTPS), 3306 (MySQL), 3389 (RDP). Checks run from Cloudflare's edge — a few destinations (including some sites behind CDNs) may show unreachable even when actually open.
Securing or auditing your network?
OEsupplies runs external exposure assessments, firewall reviews and monitoring across Guyana and the Caribbean.