Similar to Real-time_Transport_Protocol

Border Gateway Protocol

Exterior Gateway Protocol

BinHex

CAST-128

CAST-256

Comma-separated values

Common Management Information Protocol

Datagram Congestion Control Protocol

Direct Client-to-Client

Diameter (protocol)

Endpoint Handlespace Redundancy Protocol

Exchange ActiveSync

Character Generator Protocol

Constrained Application Protocol

Daytime Protocol

Dynamic Host Configuration Protocol

DHCPv6

Discard Protocol

DNS over HTTPS

Domain Name System

Echo Protocol

File Transfer Protocol

Gopher (protocol)

HTTP/2

HTTP/3

IRC

Lightweight Directory Access Protocol