* Earlier this year, two more subnets were added to document IPv4 with.
* A study of unofficial IP pollution: never expect to use 18.104.22.168/24 or 22.214.171.124/24 when you read this.
* Non-XKCD map of IPv4 from 2007: there's a semi-updated interactive version too.
* I ask Reddit about updating the XKCD comic version
* Initiative launched to be ready for IPv6 by May Day, 2011: weirdly enough the HE.net counter had jumped to run out of IPv4 by that date, but its been corrected for now.