The Department of Work and Pensions, UK has an entire block of
/8 IPv4 addresses that is unused and an e-petition has been filed in this regards asking the DWP to sell it off thus easing off the RIPE IPv4 address space scarcity a little.
John Graham-Cumming, who found this unused block, wrote in a blog post that the DWP was in possession of 126.96.36.199/8 IPv4 addresses. According to Cumming, these 16.9 million IP addresses are unused at the moment and he derived this conclusion by doing a check in the ASN database.
A check of the ASN database will show that there are no networks for that block of addresses, he wrote — via redwolf.newsvine.com