Port Number Lookup
Look up common TCP and UDP port numbers and their associated services. Search by port number or service name. Includes well-known and registered ports.
- 100% free
- No signup
- Runs in your browser
Used 9.8K times today
| Port | Protocol | Service | Description |
|---|---|---|---|
| 20 | TCP | FTP | File Transfer Protocol (data) |
| 21 | TCP | FTP | File Transfer Protocol (control) |
| 22 | TCP | SSH | Secure Shell — remote login |
| 23 | TCP | Telnet | Telnet remote login (insecure) |
| 25 | TCP | SMTP | Simple Mail Transfer Protocol |
| 53 | TCP/UDP | DNS | Domain Name System |
| 67 | UDP | DHCP | Dynamic Host Configuration (server) |
| 68 | UDP | DHCP | Dynamic Host Configuration (client) |
| 80 | TCP | HTTP | HyperText Transfer Protocol (web) |
| 110 | TCP | POP3 | Post Office Protocol 3 (email) |
| 123 | UDP | NTP | Network Time Protocol |
| 143 | TCP | IMAP | Internet Message Access Protocol |
| 161 | UDP | SNMP | Simple Network Management Protocol |
| 194 | TCP | IRC | Internet Relay Chat |
| 389 | TCP | LDAP | Lightweight Directory Access Protocol |
| 443 | TCP | HTTPS | HTTP Secure (SSL/TLS) |
| 445 | TCP | SMB | Server Message Block (Windows file sharing) |
| 465 | TCP | SMTPS | SMTP over SSL |
| 587 | TCP | SMTP | SMTP (mail submission) |
| 636 | TCP | LDAPS | LDAP over SSL |
| 993 | TCP | IMAPS | IMAP over SSL |
| 995 | TCP | POP3S | POP3 over SSL |
| 1194 | UDP | OpenVPN | OpenVPN |
| 1433 | TCP | MSSQL | Microsoft SQL Server |
| 1723 | TCP | PPTP | Point-to-Point Tunneling Protocol |
| 3306 | TCP | MySQL | MySQL database |
| 3389 | TCP | RDP | Remote Desktop Protocol (Windows) |
| 5432 | TCP | PostgreSQL | PostgreSQL database |
| 5900 | TCP | VNC | Virtual Network Computing |
| 6379 | TCP | Redis | Redis in-memory database |
| 6881 | TCP | BitTorrent | BitTorrent file sharing |
| 8080 | TCP | HTTP Alt | HTTP alternative port (proxies/dev) |
| 8443 | TCP | HTTPS Alt | HTTPS alternative port |
| 9200 | TCP | Elasticsearch | Elasticsearch REST API |
| 27017 | TCP | MongoDB | MongoDB database |
How to Use Port Number Lookup
- 1
Search by port number
Type a port number (e.g. 443) to see which service uses it.
- 2
Search by service name
Type a service name (e.g. "ssh" or "http") to find its default port.
- 3
Browse the list
Scroll through the full list of well-known ports (0–1023) and registered ports (1024–49151).
Frequently Asked Questions
What are well-known ports?
Is this TCP or UDP?
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<iframe src="https://utilko.com/embed/port-number-lookup/" width="100%" height="500" frameborder="0" title="Port Number Lookup"></iframe> About Port Number Lookup
The Port Number Lookup tool on Utilko lets you search TCP and UDP port numbers and their associated services. Quickly look up ports like 80 (HTTP), 443 (HTTPS), 22 (SSH), 3306 (MySQL), and hundreds more from the IANA registry.
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