[tor-relays] OVH: the biggest and fastest growing autonomous system

[nusenu]

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Hi,

OVH is by far the biggest AS on the tor network, in terms of
consensus weight (>12%),
guard probability (>15%),
middle propability (>14%)
and in the top 3 by exit probability(>7%).

Here are some AS stats for June 2015, that show which ASes added most
bandwidth/CW to the tor network.

This shows that OVH is not only the biggest AS but also the fasted
growing AS:

+-------------------------------------+---------+-------------------+
| as_name                             | new_FPs | added_CW_fraction |
+-------------------------------------+---------+-------------------+
| OVH SAS                             |      98 |             2.129 |
| Digital Ocean, Inc.                 |      44 |             0.936 |
| Internet Assigned Numbers Authority |      23 |             0.911 |
| ONLINE S.A.S.                       |      23 |             0.594 |
| SOFTplus Entwicklungen GmbH         |       4 |             0.512 |
| STRATO AG                           |       8 |             0.274 |
| Contabo GmbH                        |       9 |             0.200 |
| LDeX Connect LTD                    |       5 |             0.200 |
| myLoc managed IT AG                 |       7 |             0.178 |
| Core-Backbone GmbH                  |       2 |             0.160 |
| PlusServer AG                       |       9 |             0.141 |
| PCextreme B.V.                      |       1 |             0.119 |
| Hetzner Online AG                   |      30 |             0.113 |
| ISPpro Internet KG                  |       3 |             0.113 |
| United Gameserver GmbH              |       4 |             0.107 |
| BlazingFast LLC                     |      12 |             0.101 |
| WorldStream                         |      19 |             0.092 |
+-------------------------------------+---------+-------------------+

new_FPs:
number of relays (identified by fingerprint) that were first seen in
June 2015 and were still running at some point during the last 7 days

added_CW_fraction
aggregated CW fraction of relays identified in the new_FPs column


If you want to help stop this trend, and make the tor network more
diverse, choose non-top 10 ASes when adding relays (10 is an arbitrary
number).

You can use compass 'group by AS' feature to find out about the top X
ASes:

https://compass.torproject.org/
or if that is unavailable/not working, Thomas White's compass instance:
https://compass.thecthulhu.com

If you know in advance that you are running guards/exits only you can
sort the table by guard or exit probability by clicking on the column
name to find out about crowded guard/exit ASes.

thanks for running relays,
nusenu

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