Common Ports
Look up well-known TCP/UDP port numbers and the services that use them.
File Transfer Protocol (data)
File Transfer Protocol (control)
Secure Shell, SCP, SFTP
Unencrypted remote login
Email routing
Domain Name System
Dynamic host configuration (server)
Dynamic host configuration (client)
Trivial File Transfer Protocol
Web traffic
Email retrieval
Network News Transfer Protocol
Network Time Protocol
Email retrieval
Network management
Directory services
Secure web traffic (TLS)
Windows file sharing
SMTP over TLS
System logging
Email submission (STARTTLS)
Internet Printing Protocol
IMAP over TLS
POP3 over TLS
Microsoft SQL Server
Oracle database
Network File System
Docker daemon (unencrypted)
Docker daemon (TLS)
Common Node/React dev port
MySQL / MariaDB
Remote Desktop Protocol
PostgreSQL database
RabbitMQ message broker
Remote desktop
Redis key-value store
Alternate HTTP / proxies
Alternate HTTPS
PHP-FPM, dev servers
Elasticsearch HTTP
Memcached cache
MongoDB database
Well-known TCP/UDP ports and the services that typically run on them. Bundled with the page — no lookups are sent anywhere.