Similar to パーセントエンコーディング

Generic routing encapsulation

AppleSingle and AppleDouble formats

BinHex

IETF language tag

PNG

IPsec

Etiquette in technology

IPv6

SOCKS

Autonomous system (Internet)

TCP sequence prediction attack

Deflate

Gzip

Pretty Good Privacy

Challenge-Handshake Authentication Protocol

Mobile IP

HMAC

HTTP cookie

MHTML

Dynamic DNS

CAST-128

Service Location Protocol

Label Distribution Protocol

Resource Reservation Protocol

Augmented Backus–Naur form

RC2

RFC 2322