[NSCFType]

Well, technically, IP addresses can be represented by a single integer:

2130706433 == 127.0.0.1

[shdon]

And the cool thing is, you can just put http://3626153261 in your browser address bar and end up at slashdot.org (news.ycombinator.com is behind CloudFlare, which doesn't allow IP-based access for obvious reasons)

[gweinberg]

Technically, anything you can name can be represented by a single integer.

[staz]

Yeah but technically in the protocol it's just one number, we show it as 4 numbers because it's easier for humans to manipulate