On the Internet, .cc is the country code top-level domain (ccTLD) for the Cocos (Keeling) Islands, an Australian territory.

Business owners in Southern Massachusetts are rapidly adopting Cape Cod CC domains for local identity.

These are not official hierarchies of .cc, but domains owned by companies who offer free subdomain registration.

The co.cc URL has been known to host spammers, who create spam blogs, or "splogs", often with nonsense names.

Due to such spamming, in July 2011 Google removed over 11 million .co.cc websites from its search results.