Get the latest tech news

Reclaiming IPv4 Class E's 240.0.0.0/4

r since the supply of fresh IPv4 address blocks was depleted there has been a number of interesting market changes, mostly around the costs to either acquire or lease IPv4 address blocks. Since the demand for IPv4 addressing has not changed that much, prices have gone up, and more providers like AWS, Hetzner, OVH, etc who were previously pricing in the cost of IPv4, are now charging for it separately.

For some people this has been a bit of a pay day, while if you were to have had a block assigned to you in 2016, you would have gotten 4 /24’s (a /24 is the minimum you can reasonably route on the BGP backed internet), however if you were setting up shop in the 2000’s you could easily acquire a 256 /24’s in a single allocation! But for other networks this development in pricing has been devastating to the costs of business, industries that were used to assigning a single IPv4 address (or more) to every subscriber began to find that this model is unsustainable, and have had no option other than to deploy Carrier Grade NAT. Because of the previously mentioned issues, I would not have thought it was worthwhile to try and test in in the real world, however you can imagine my surprise that a few days afterwards I got this email from a Internet Exchange mailing list

Get the Android app