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Jorge Arredondo Dorantes CCIE

Jorge Arredondo Dorantes CCIE

Block facebook network segments - web content filtering at OSI layer 3

Hello networkers.
Are you guys interested to filter the whole facebook segment?
Do you want to re-route or block facebook traffic at L3 level?

In case you have plenty of free time and willing to make a little bit of research you will find out that Facebook inc. is currently using 3 public AS world wide only:

AS 32934
AS 54115
AS 63293

(I used this url to validate public AS list: 
http://bgp.potaroo.net/cidr/autnums.html )

Anyways, within this ranges they have bunch of public network segments obviously. I worked one by one to bring you here the supernets matching ALL Facebook inc. segments. Here we go:

31.13.64.0/18
31.13.24.0/21
45.64.40.0/22
66.220.144.0/20
69.63.176.0/20
69.171.224.0/19
74.119.76.0/22
103.4.96.0/22
129.134.0.0/16
157.240.0.0/16
173.252.64.0/18
179.60.192.0/22
185.60.216.0/22
204.15.20.0/22
199.201.64.0/22

Table updated friday May 26th, 2017.
In case you find another supernet or segment I skipped please add it in the comments below.
Also if you have other public AS list more reliable please share. Thank you

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