Similar to 存在証明サービス
Codecademy
CodecademyCodePlex
CodePlexCollaborative real-time editor
Collaborative real-time editorCOLORS (SNS)
Common Gateway Interface
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Craigslist.cu
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Cuil
Cuil.cw
.cw.cx
.cx.cy
.cyCyberGhost VPN
.cz
.czData URI scheme
Data URI schemeDatagram Congestion Control Protocol
Datagram Congestion Control ProtocolDatagram Transport Layer Security
Datagram Transport Layer SecurityDAViCal
DAViCal.de
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DNSゾーン転送
DNS zone transfer.do
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.dz.ec
.ecEduroam
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Empas