Port 631

Port 631 is used by the Internet Printing Protocol (IPP) to provide network printing services over the Internet. It allows users to print documents from their devices to printers that are connected to a network or shared on a computer. The port is used by the IPP server to receive print jobs from the client devices and transmit them to the printers.

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 631
tcp
ipp
IPP (Internet Printing
WELL KNOWN PORT
Port 631
udp
ipp
IPP (Internet Printing
WELL KNOWN PORT

UnOfficial

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

Port Protocol (TCP/UDP) Description
Port 631 Common Unix Printing System (CUPS)
TCP UDP Ports
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