Quick Ports
Browser limitation: True TCP port checking requires server-side connections. Results are fetched via portchecker.co API. For reliable checks, use nmap -p PORT HOST or nc -zv HOST PORT locally.
Enter host and port to check
Check if a TCP port is open on any host.
| Port | Service | Proto | Description |
|---|---|---|---|
| 21 | FTP | TCP | File Transfer Protocol |
| 22 | SSH | TCP | Secure Shell |
| 23 | Telnet | TCP | Telnet protocol |
| 25 | SMTP | TCP | Simple Mail Transfer Protocol |
| 53 | DNS | TCP/UDP | Domain Name System |
| 80 | HTTP | TCP | Hypertext Transfer Protocol |
| 110 | POP3 | TCP | Post Office Protocol v3 |
| 143 | IMAP | TCP | Internet Message Access Protocol |
| 443 | HTTPS | TCP | HTTP Secure |
| 465 | SMTPS | TCP | SMTP over TLS |
| 587 | SMTP | TCP | SMTP (submission) |
| 993 | IMAPS | TCP | IMAP over TLS |
| 995 | POP3S | TCP | POP3 over TLS |
| 1433 | MSSQL | TCP | Microsoft SQL Server |
| 3000 | Node.js | TCP | Common Node.js dev port |
| 3306 | MySQL | TCP | MySQL Database |
| 3389 | RDP | TCP | Remote Desktop Protocol |
| 4000 | Dev | TCP | Common dev server port |
| 5000 | Flask | TCP | Common Flask/dev port |
| 5432 | PostgreSQL | TCP | PostgreSQL Database |
| 5672 | RabbitMQ | TCP | AMQP (RabbitMQ) |
| 6379 | Redis | TCP | Redis in-memory store |
| 8080 | HTTP-Alt | TCP | Alternative HTTP port |
| 8443 | HTTPS-Alt | TCP | Alternative HTTPS port |
| 9200 | Elasticsearch | TCP | Elasticsearch REST API |
| 27017 | MongoDB | TCP | MongoDB Database |