Offline IP address to Autonomous System Number lookup module
Description
pyasn is a Python extension module that enables very fast IP address to
Autonomous System Number lookups. Current state and Historical lookups can be
done, based on the MRT/RIB BGP archive used as input.
pyasn is different from other ASN lookup tools in that it provides offline and
historical lookups. It provides utility scripts for users to build their own
lookup databases based on any MRT/RIB archive. This makes pyasn much faster
than online dig/whois/json lookups.