01:52: IPv4 subnets in 2015: the wonder thereof

A network tech came to visit with me today, and at some point I mentioned offhandedly:

This was configured as 192.168.100.15 because that's the /24 subnet that we were using back in December, but we've since bought a real subnet from ARIN and moved to that--see, this one here...

His eyes widened a bit and he said:

You bought a /24 from ARIN?

I said:

a /21, actually.

His eyes widened a lot and he inquired:

You were able to buy a /21 from ARIN in 2015!? OMG. How did you manage THAT!?

Apparently people are endlessly impressed by this (this is something like the eleventh such reaction I've got).

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