What are Ford and Prudential doing with their allocation? It seems unnecessary for them to have so much space.

I guess that at some point Ford though they could have an IP for each car? Out of curiosity I looked at the headers of an email I got from them and sure enough it came from an IP in their allocation! However, the same was not true for emails from Daimler...

XKCD's rendition: https://xkcd.com/195/

I feel it's slightly more readable, if out of date.