Similar to モバイルブロードバンド

.co

Codecademy

CodePlex

Common Gateway Interface

.coop

.cr

Craigslist

.cu

Cuil

.cw

.cx

.cy

.cz

Data URI scheme

Datagram Transport Layer Security

DAViCal

.de

Disqus

DNS zone transfer

.do

.dz

.ec

Empas