Port Scanner Online

Enter an IP address or domain — the service will check 22 most common ports.

Scanning is performed from 101IP servers. Use only for your own resources or with the owner's permission.

Port Scanner Online — check open ports

The Port Scanner on 101IP lets you instantly check the status of ports for any IP address or domain. Enter a host and get a list of open, closed, and filtered ports across Web, Email, Remote Access, Database, and other services.

Port statuses

Open — the port is accessible, the service is accepting connections;
Closed — the host responds, but no service is running on that port;
Filtered — a firewall is blocking the connection, no response received.

Which ports are checked

Web: 80 (HTTP), 443 (HTTPS), 8080, 8443;
Email: 25 (SMTP), 465, 587, 110 (POP3), 143 (IMAP) and secure variants;
Remote: 22 (SSH), 21 (FTP), 3389 (RDP);
Database: 3306 (MySQL), 5432 (PostgreSQL), 27017 (MongoDB), 6379 (Redis).

Scanning is performed via TCP connections from 101IP servers. Use this service only to check resources you own or have permission to test.