TCP Port Reference
Network & Ops · Free Online Tool
Query common port-to-service mappings (80/443/3306…).
| Port | Protocol | TCP | UDP | Description |
|---|---|---|---|---|
| 20 | FTP-DATA | ✓ | — | File Transfer Protocol (data) |
| 21 | FTP | ✓ | — | File Transfer Protocol (control) |
| 22 | SSH | ✓ | — | Secure Shell |
| 23 | TELNET | ✓ | — | Telnet |
| 25 | SMTP | ✓ | — | Simple Mail Transfer Protocol |
| 53 | DNS | ✓ | ✓ | Domain Name System |
| 67 | DHCP | — | ✓ | DHCP (server) |
| 68 | DHCP | — | ✓ | DHCP (client) |
| 69 | TFTP | — | ✓ | Trivial File Transfer Protocol |
| 80 | HTTP | ✓ | — | Hypertext Transfer Protocol |
| 110 | POP3 | ✓ | — | Post Office Protocol v3 |
| 119 | NNTP | ✓ | — | Network News Transfer Protocol |
| 123 | NTP | — | ✓ | Network Time Protocol |
| 143 | IMAP | ✓ | — | Internet Message Access Protocol |
| 161 | SNMP | — | ✓ | Simple Network Management Protocol |
| 162 | SNMP-TRAP | — | ✓ | SNMP Trap |
| 389 | LDAP | ✓ | ✓ | Lightweight Directory Access Protocol |
| 443 | HTTPS | ✓ | — | HTTP over TLS/SSL |
| 445 | SMB | ✓ | — | Server Message Block (Microsoft-DS) |
| 465 | SMTPS | ✓ | — | SMTP over SSL |
| 514 | SYSLOG | — | ✓ | Syslog |
| 587 | SMTP-SUBMIT | ✓ | — | SMTP submission |
| 636 | LDAPS | ✓ | — | LDAP over SSL |
| 853 | DoT | ✓ | — | DNS over TLS |
| 989 | FTPS-DATA | ✓ | — | FTP over SSL (data) |
| 990 | FTPS | ✓ | — | FTP over SSL (control) |
| 993 | IMAPS | ✓ | — | IMAP over SSL |
| 995 | POP3S | ✓ | — | POP3 over SSL |
| 1080 | SOCKS | ✓ | — | SOCKS proxy |
| 1194 | OpenVPN | ✓ | ✓ | OpenVPN |
| 1433 | MSSQL | ✓ | — | Microsoft SQL Server |
| 1521 | Oracle | ✓ | — | Oracle DB |
| 1723 | PPTP | ✓ | — | Point-to-Point Tunneling Protocol |
| 2049 | NFS | ✓ | ✓ | Network File System |
| 3306 | MySQL | ✓ | — | MySQL database |
| 3389 | RDP | ✓ | — | Remote Desktop Protocol |
| 5432 | PostgreSQL | ✓ | — | PostgreSQL database |
| 5900 | VNC | ✓ | — | Virtual Network Computing |
| 6379 | Redis | ✓ | — | Redis |
| 8080 | HTTP-ALT | ✓ | — | HTTP alternate (proxy/web) |
| 8443 | HTTPS-ALT | ✓ | — | HTTPS alternate |
| 9092 | Kafka | ✓ | — | Apache Kafka |
| 9200 | Elasticsearch | ✓ | — | Elasticsearch HTTP |
| 11211 | Memcached | ✓ | ✓ | Memcached |
| 27017 | MongoDB | ✓ | — | MongoDB |
Curated List
Common ports from well-known, registered, and dynamic ranges.
Search & Filter
Search by port, name, or description and filter by transport protocol.
TCP & UDP Flags
Quickly see which transport each service uses.
How to Use TCP Port Reference
- 1Enter the URL, IP address, or network parameter to look up.
- 2Click the lookup or test button.
- 3Review the detailed results in the output panel.
- 4Use the information for your network operations.
Features
- ✓100% free — no signup, no subscription, no ads
- ✓Runs entirely in your browser — data never leaves your device
- ✓Fast and lightweight — instant results
- ✓Cross-platform — works on desktop, tablet, and mobile
Frequently Asked Questions
Are network lookups real-time?
Yes, IP lookups, DNS queries, and HTTP tests perform live network requests to provide current data.
Is my IP address logged?
The IP Lookup tool queries public geolocation APIs. We do not store your IP address or lookup history.
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Learn the concept
Learn the concept
Understand the programming ideas behind this tool.