Application Configuration Access Protocol (acap)
Atom Publishing Format and Protocol (atompub)
Electronic Data Interchange-Internet Integration (ediint)
Instant Messaging and Presence Protocol (impp)
Internet Printing Protocol (ipp)
LDAP Duplication/Replication/Update Protocols (ldup)
Message Tracking Protocol (msgtrk)
Provisioning Registry Protocol (provreg)
Telnet TN3270 Enhancements (tn3270e)
Internet Open Trading Protocol (trade)
Usenet Article Standard Update (usefor)