Skip to content


Subversion checkout URL

You can clone with
Download ZIP
branch: master
@hezag hezag
45 lines (27 sloc) 1.583 kB
blockfinder by Jacob Appelbaum <>, David <>
"All that Blockfinder does is allow you to identify, contact and potentially
hack into every computer network in the world." - Rolling Stone, August 2010 [0]
Contrary to popular media claims, blockfinder is a simple text based console
tool that returns a list of netblocks for a given country. It does this by
fetching the following lists of allocations:
The list of ISO codes is ISO 3166-1 as found here:
blockfinder has two methods of operation:
Update the lists of network object allocations
Returning a list of all netblocks (or asn, etc) for a given country
To use blockfinder, first create or update the cache:
blockfinder -i
Once you have a proper cache, search for the desired resource in the country
of your choice:
./blockfinder -v -t mm
Additionally, to filter results for a specific protocol you can use a selector:
./blockfinder -v -t mm:ipv4
On Windows (in cmd, PowerShell and 4nt) one may find blockfinder.bat useful:
Jump to Line
Something went wrong with that request. Please try again.