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Supporting your point: With zmap (https://zmap.io/) you can scan IPv4 in 45 mins using a 1 Gb pipe, or in 5 mins on a 10 Gb pipe.

Wait, why does a port scan need to transfer > 30 GiB of data?

Or do you mean all of IPv4?

All of the internet yes

Not IPv6

i'd say that hosts which cannot reach ipv4 addresses are not part of 'the internet' (thou they are part of 'a network')

Full UDP range?