Interesting Fact: Bogon IP Addresses

March 8, 2008 – 6:23 PM

Steve Gibson from GRC was talking about these “bogon” ip addresses that are still unused on the Internet. He estimates that approximately 40% of our current IP address space is bogon, or simply reserved and unallocated.

If you just look at the first byte or octet of the IP Address, ie n.*.*.* , anything that starts with the below numbers are bogon:

0
1
2
5
7
23
27
31
36
37
39
42
48
50
77
78
79
89 through 123
127 – (local host range)
173 through 187
197

As Steve said, we are not running out of IP Addresses. I guess we just need to start utilizing all the ones we have available to us.