Port Number Lookup
Search well-known TCP/UDP ports and their services.
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Well-known ports (54)
| Port | Protocol | Service | Description |
|---|---|---|---|
| 20 | TCP | FTP-DATA | FTP data transfer |
| 21 | TCP | FTP | File Transfer Protocol control |
| 22 | TCP | SSH | Secure Shell remote login |
| 23 | TCP | Telnet | Unencrypted remote login |
| 25 | TCP | SMTP | Simple Mail Transfer Protocol |
| 43 | TCP | WHOIS | WHOIS directory service |
| 53 | TCP/UDP | DNS | Domain Name System |
| 67 | UDP | DHCP | DHCP server |
| 68 | UDP | DHCP | DHCP client |
| 69 | UDP | TFTP | Trivial File Transfer Protocol |
| 80 | TCP | HTTP | Hypertext Transfer Protocol |
| 110 | TCP | POP3 | Post Office Protocol v3 |
| 119 | TCP | NNTP | Network News Transfer Protocol |
| 123 | UDP | NTP | Network Time Protocol |
| 135 | TCP | MS-RPC | Microsoft RPC endpoint mapper |
| 137 | UDP | NetBIOS-NS | NetBIOS name service |
| 139 | TCP | NetBIOS-SSN | NetBIOS session service |
| 143 | TCP | IMAP | Internet Message Access Protocol |
| 161 | UDP | SNMP | Simple Network Management Protocol |
| 179 | TCP | BGP | Border Gateway Protocol |
| 194 | TCP | IRC | Internet Relay Chat |
| 389 | TCP | LDAP | Lightweight Directory Access Protocol |
| 443 | TCP | HTTPS | HTTP over TLS/SSL |
| 445 | TCP | SMB | Microsoft SMB file sharing |
| 465 | TCP | SMTPS | SMTP over SSL |
| 514 | UDP | Syslog | System logging protocol |
| 515 | TCP | LPD | Line Printer Daemon |
| 587 | TCP | SMTP (Submission) | Mail submission agent |
| 631 | TCP | IPP | Internet Printing Protocol |
| 636 | TCP | LDAPS | LDAP over SSL |
| 993 | TCP | IMAPS | IMAP over SSL |
| 995 | TCP | POP3S | POP3 over SSL |
| 1080 | TCP | SOCKS | SOCKS proxy |
| 1433 | TCP | MSSQL | Microsoft SQL Server |
| 1521 | TCP | Oracle DB | Oracle database default listener |
| 1723 | TCP | PPTP | Point-to-Point Tunneling Protocol |
| 2049 | TCP/UDP | NFS | Network File System |
| 27017 | TCP | MongoDB | MongoDB default port |
| 3000 | TCP | Dev server | Common Node.js/React dev server port |
| 3306 | TCP | MySQL | MySQL/MariaDB database |
| 3389 | TCP | RDP | Remote Desktop Protocol |
| 5000 | TCP | Dev server | Common Flask/dev server port |
| 5432 | TCP | PostgreSQL | PostgreSQL database |
| 5672 | TCP | AMQP | RabbitMQ / AMQP message broker |
| 5900 | TCP | VNC | Virtual Network Computing |
| 6379 | TCP | Redis | Redis in-memory data store |
| 6443 | TCP | Kubernetes API | Kubernetes API server |
| 8080 | TCP | HTTP-ALT | Common alternate HTTP / proxy port |
| 8443 | TCP | HTTPS-ALT | Common alternate HTTPS port |
| 9000 | TCP | PHP-FPM / SonarQube | Common app server port |
| 9092 | TCP | Kafka | Apache Kafka broker |
| 9200 | TCP | Elasticsearch | Elasticsearch REST API |
| 11211 | TCP/UDP | Memcached | Memcached distributed cache |
| 27015 | TCP/UDP | Source Engine | Valve Source engine games |
About the Port Number Lookup
Search a reference table of well-known and commonly used TCP/UDP port numbers, including their standard services and short descriptions — handy for networking, DevOps, and firewall configuration.
Examples
Search 443
443Output
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Frequently asked questions
Version 1.0.0 · Updated 2026-08-06 · Runs entirely in your browser