Port Number Search
Look up service names by port number, or port numbers by service name.
Common ports
| Port | Protocol | Service | Description |
|---|---|---|---|
| 20 | TCP | ftp-data | FTP data transfer |
| 21 | TCP | ftp | FTP control |
| 22 | TCP | ssh | SSH (remote login, file transfer) |
| 23 | TCP | telnet | Telnet (remote terminal) |
| 25 | TCP | smtp | SMTP (mail submission) |
| 53 | UDP | dns | DNS (name resolution) |
| 53 | TCP | dns | DNS (name resolution) |
| 80 | TCP | http | HTTP (Web) |
| 110 | TCP | pop3 | POP3 (mail retrieval) |
| 143 | TCP | imap | IMAP (mail retrieval) |
| 443 | TCP | https | HTTPS (Web, encrypted) |
| 587 | TCP | submission | SMTP Submission (mail) |
| 993 | TCP | imaps | IMAPS (IMAP over TLS) |
| 995 | TCP | pop3s | POP3S (POP3 over TLS) |
| 3306 | TCP | mysql | MySQL database |
| 5432 | TCP | postgresql | PostgreSQL database |
| 6379 | TCP | redis | Redis cache and key-value store |
| 27017 | TCP | mongodb | MongoDB database |
| 9200 | TCP | elasticsearch | Elasticsearch search engine |
How to use
About this tool
Look up port numbers and service names in both directions. Reference based on IANA official assignments.
How to use
Enter a port number (e.g. 3306) or service name (e.g. mysql). You can also select from the list.
Use cases
• Firewall and security configuration • Port verification in dev/ops • Network troubleshooting • Learning and reference
How it works
Official port assignments are maintained by IANA. • Registry (HTML): https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml • Data (XML): https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xml