Port 1688

Modified by:

Port 1688 is used for the Microsoft Key Management Service (KMS). It is used for Windows activation and licensing purposes. The KMS is used by organizations that have multiple computers running Microsoft products and need to activate them using a central server rather than activating each computer individually.

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 1688
tcp
nsjtp-data
nsjtp-data
REGISTERED PORT
Port 1688
udp
nsjtp-data
nsjtp-data
REGISTERED PORT

UnOfficial

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

Port Protocol (TCP/UDP) Description
TCP UDP Ports
Other ports
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Port 1156
Ports those registered with IANA are shown as official ports. The same port number
Port 5605
Ports those registered with IANA are shown as official ports. The same port number
Port 3373
Ports those registered with IANA are shown as official ports. The same port number
Port 2215
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Port 11321
Ports those registered with IANA are shown as official ports. The same port number
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