Bogon Bit Notation List

v7.0, 27 April 2012, maintained by the Team Cymru NOC, noc@cymru.com

Be sure to check out the main Bogon Reference for more information on the project and terminology used, and why it is important to keep your bogon filters up-to-date.


[ Bit Notation Non-aggregated ]       [ Bit Notation Aggregated ]

[ Juniper prefix-list Non-aggregated ]       [ Juniper prefix-list Aggregated ]

Bit Notation Non-aggregated

0.0.0.0/8
10.0.0.0/8
100.64.0.0/10
127.0.0.0/8
169.254.0.0/16
172.16.0.0/12
192.0.0.0/24
192.0.2.0/24
192.168.0.0/16
198.18.0.0/15
198.51.100.0/24
203.0.113.0/24
224.0.0.0/4
240.0.0.0/4


Bit Notation Aggregated

If proper boundaries are not followed it is possible to further aggregate, though this likely won't work on most gear.

0.0.0.0/8
10.0.0.0/8
100.64.0.0/10
127.0.0.0/8
169.254.0.0/16
172.16.0.0/12
192.0.0.0/24
192.0.2.0/24
192.168.0.0/16
198.18.0.0/15
198.51.100.0/24
203.0.113.0/24
224.0.0.0/3


Juniper prefix-list Non-aggregated

policy-options {
prefix-list bogons {
0.0.0.0/8;
10.0.0.0/8;
100.64.0.0/10;
127.0.0.0/8;
169.254.0.0/16;
172.16.0.0/12;
192.0.0.0/24;
192.0.2.0/24;
192.168.0.0/16;
198.18.0.0/15;
198.51.100.0/24;
203.0.113.0/24;
224.0.0.0/4;
240.0.0.0/4;
}
}


Juniper prefix-list Aggregated

The following aggregations work with Cisco ACLs, and are aligned on proper boundaries.

policy-options {
prefix-list bogons {
0.0.0.0/8;
10.0.0.0/8;
100.64.0.0/10;
127.0.0.0/8;
169.254.0.0/16;
172.16.0.0/12;
192.0.0.0/24;
192.0.2.0/24;
192.168.0.0/16;
198.18.0.0/15;
198.51.100.0/24;
203.0.113.0/24;
224.0.0.0/3;
}
}