Look up IANA TCP and UDP port numbers by service name or number. See protocol support, official status, and descriptions for SSH, HTTPS, DNS, and more.
Added Jun 1, 2026
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Enter a value for port number or service name to see your result.
Search IANA well-known and commonly registered TCP/UDP ports by number or service name. Shows protocol support, official vs unofficial status, and a one-line description for each match.
Port 443 is the standard HTTPS port (TCP and UDP per IANA).
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Finds port 22 — Secure Shell.
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Ports 0–1023 are the well-known range, assigned by IANA for standard services like HTTP (80), HTTPS (443), and DNS (53). They typically require root/admin privileges to bind on Unix systems.
Official ports are registered with IANA and listed in the service name registry. Unofficial ports are conventions adopted by software (e.g. Redis on 6379) without formal IANA assignment.