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Port Checker

Check if network ports are open or closed on any server or domain.

Selected Ports (5):
21222580443

Note: Due to browser security restrictions, this tool can only reliably check HTTP/HTTPS ports (80, 443, 8080, 8443). For comprehensive port scanning, use command-line tools like nmap.

Common Network Ports

Network ports are virtual endpoints where network connections start and end. Each port is associated with a specific service or protocol.

20TCP
FTP Data
File Transfer Protocol (Data)
21TCP
FTP
File Transfer Protocol (Control)
22TCP
SSH
Secure Shell
23TCP
Telnet
Telnet Protocol
25TCP
SMTP
Simple Mail Transfer Protocol
53TCP/UDP
DNS
Domain Name System
80TCP
HTTP
Hypertext Transfer Protocol
110TCP
POP3
Post Office Protocol v3
143TCP
IMAP
Internet Message Access Protocol
443TCP
HTTPS
HTTP Secure
465TCP
SMTPS
SMTP Secure
587TCP
SMTP
SMTP (Mail Submission)
993TCP
IMAPS
IMAP Secure
995TCP
POP3S
POP3 Secure
3306TCP
MySQL
MySQL Database
3389TCP
RDP
Remote Desktop Protocol
5432TCP
PostgreSQL
PostgreSQL Database
8080TCP
HTTP Alt
HTTP Alternative
8443TCP
HTTPS Alt
HTTPS Alternative