Port 443

Port 443 is used for HTTPS (Hypertext Transfer Protocol Secure), which is a protocol used for secure communication over the internet. It is commonly used for secure transactions such as online banking, shopping, and secure data transfer. It encrypts the data being exchanged between a client and a server, making it difficult for anyone to intercept the communication and steal sensitive information.

Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.

Official

Port
Protocol (TCP/UDP)
Title
Description
Port Type
Port 443
tcp
http
http protocol over
WELL KNOWN PORT
Port 443
udp
http
http protocol over
WELL KNOWN PORT
Port 443
sctp
http
HTTPS
WELL KNOWN PORT

UnOfficial

Unofficialy or sometimes with conflict, the same port may be used by different applications.

Port Protocol (TCP/UDP) Description
TCP UDP Ports
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