Last year (three days ago), I visited 36C3, the 36th Annual CCC event, held in Leipzig, Germany. This is an event with thousands of attendees, that gather together to attend talks, hack things, create tools, showcase new projects, etc. It is an amazing event, that I simply can’t recommend enough.
During this event, the C3NOC, under the trademark CCC Internetmanufaktur™, provides an amazing network, both wired and wireless, for attendees to use. It spans the entire event area, and people use it extensively. This network is dual-stack, which means it runs on both IPv6 and IPv4.
For the IPv4 space, they use, at least for access, a
/16 network, and devices
are assigned addresses there, mostly using DHCP. Given my recent blog post on
mapping the Greek
Internet, I thought I
should use the same tools and methodology learned there, to monitor the event
IP space, and see how it differs over time.
So I added
126.96.36.199/16 to the
imager, and set it to run pings every
hour, at the 30th minute. Since the network was mostly wireless, and in a
heavily congested and very high density space, I decided to limit the rate at
128 concurrent pings. The measurements started on the 26th of December, 2019,
at 19:30 UTC, and ended on the 3rd of January, 2020, three days after the
event, mainly because I forgot about them. This is also the range of dates
included in the GIF, so the teardown and subsequent dissapear from the
Internet, due to a fiber
cut and then planned
maintenance, can be
So without further delay, I present you, 36C3’s animated GIF IPv4 Map: