Similar to LISTSERV

DCE Distributed File System

Exterior Gateway Protocol

Bootstrap Protocol

Classless Inter-Domain Routing

Diameter (protocol)

DNS-based Authentication of Named Entities

Endpoint Handlespace Redundancy Protocol

Finger (protocol)

Lightweight Directory Access Protocol

Link Control Protocol

NETCONF

Online Certificate Status Protocol

Berkeley r-commands

Session Description Protocol

Simple Authentication and Security Layer

Syslog

Type–length–value

Ephemeral port

Tor (network)

Portmap

Sympa (software)

1.1.1.1

ALTQ

Arping

Avahi (software)

Berkeley Open Infrastructure for Network Computing

Berkeley Packet Filter