IPv4 and IPv6 Bogon Address List

“Bogon” or coined from the word “bogus”, In computer world,  these are IP addresses that have not been officially assigned to an entity such as IANA or Internet Assigned Number Authority which is an organization who managed allocation of globally unique IPs. 
Bogon IP adddress/ranges should not appear on the public Internet so network engineers should filter these as they are meant for use only in private networks  and considered reserved for special purposes.

You can refer to Team Cymru website who keeps an updated list of bogon IP addresses that you can use to put in your devices firewall or ACLs. Here’s a sample list of bogon IPs –> https://www.team-cymru.org/Services/Bogons/fullbogons-ipv4.txt

2 Types of Bogons:

  • Unallocated – not yet been assigned to an Regional Internet Registry (RIR) by IANA
  • Martians – private networks as indicated in RFC1918, reserved address like loopback and multicast.

Here are sample Bogon netblocks and the list is constantly changing.
Reference : https://ipgeolocation.io/resources/bogon.html

Netblock Description “This” network Private-use networks Carrier-grade NAT Loopback Name collision occurrence Link local Private-use networks IETF protocol assignments TEST-NET-1 Private-use networks Network interconnect device benchmark testing TEST-NET-2 TEST-NET-3 Multicast Reserved for future use Limited broadcast


Netblock Description
::/128 Node-scope unicast unspecified address
::1/128 Node-scope unicast loopback address
::ffff:0:0/96 IPv4-mapped addresses
::/96 IPv4-compatible addresses
100::/64 Remotely triggered black hole addresses
2001:10::/28 Overlay routable cryptographic hash identifiers (ORCHID)
2001:db8::/32 Documentation prefix
fc00::/7 Unique local addresses (ULA)
fe80::/10 Link-local unicast
fec0::/10 Site-local unicast (deprecated)
ff00::/8 Multicast (Note: ff0e:/16 is global scope and may appear on the global internet.)
Netblock Description
2002::/24 6to4 bogon (
2002:a00::/24 6to4 bogon (
2002:7f00::/24 6to4 bogon (
2002:a9fe::/32 6to4 bogon (
2002:ac10::/28 6to4 bogon (
2002:c000::/40 6to4 bogon (
2002:c000:200::/40 6to4 bogon (
2002:c0a8::/32 6to4 bogon (
2002:c612::/31 6to4 bogon (
2002:c633:6400::/40 6to4 bogon (
2002:cb00:7100::/40 6to4 bogon (
2002:e000::/20 6to4 bogon (
2002:f000::/20 6to4 bogon (
2002:ffff:ffff::/48 6to4 bogon (
2001::/40 Teredo bogon (
2001:0:a00::/40 Teredo bogon (
2001:0:7f00::/40 Teredo bogon (
2001:0:a9fe::/48 Teredo bogon (
2001:0:ac10::/44 Teredo bogon (
2001:0:c000::/56 Teredo bogon (
2001:0:c000:200::/56 Teredo bogon (
2001:0:c0a8::/48 Teredo bogon (
2001:0:c612::/47 Teredo bogon (
2001:0:c633:6400::/56 Teredo bogon (
2001:0:cb00:7100::/56 Teredo bogon (
2001:0:e000::/36 Teredo bogon (
2001:0:f000::/36 Teredo bogon (
2001:0:ffff:ffff::/64 Teredo bogon (


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