Port Scanner
Enter a public IP address to see which of the 1000 most common ports are open.
You are using the tools as a guest: up to 20 runs per hour, and the port scanner only scans your own IP address. A free account gives you full access.
Create free accountImportant ports to know
20 — FTP (data) – File transfer, data connection
21 — FTP – File transfer, control connection
22 — SSH – Secure remote access to servers
23 — Telnet – Unencrypted remote access (should be avoided)
25 — SMTP – Sending email
53 — DNS – Name resolution (domain names to IP)
80 — HTTP – Regular web traffic (unencrypted)
110 — POP3 – Retrieving email
111 — RPC – Remote Procedure Call (Unix/Linux)
135 — MS RPC – Windows remote procedure calls
139 — NetBIOS – Windows file sharing (legacy)
143 — IMAP – Retrieving email (synchronized)
161 — SNMP – Network monitoring and management
389 — LDAP – Directory service (e.g. user databases)
443 — HTTPS – Encrypted web traffic
445 — SMB – Windows file and printer sharing
465 — SMTPS – Encrypted email sending
587 — SMTP (submission) – Email sending from clients
993 — IMAPS – Encrypted IMAP
995 — POP3S – Encrypted POP3
1433 — MS SQL Server – Microsoft database
1723 — PPTP – VPN (legacy, insecure)
3306 — MySQL/MariaDB – Database
3389 — RDP – Windows Remote Desktop
5060 — SIP – IP telephony/VoIP signaling
5432 — PostgreSQL – Database
5900 — VNC – Remote desktop
6379 — Redis – In-memory database/cache
8080 — HTTP (alternate) – Often used for web apps/proxies
8443 — HTTPS (alternate) – Encrypted web on alternate port