A bogon prefix is a route that should never appear in the Internet
routing table. This can be for one of several reasons - either the prefix
is within a private or reserved IP address block, or a block that has not
yet been allocated to a Regional Internet Registry (RIR). The Bogon
Reference pages provide a number of resources for the filtering of bogon
prefixes from your routers and hosts. Check out the bogon reference for more details!
A darknet is a portion of routed, allocated IP space in which no active
services or servers reside. These are "dark" because there is,
seemingly, nothing within these networks. In fact, the darknet does
contain at least one server, which vacuums up packets and flows entering the
"dark" space for real-time analysis or post-event network forensics. For
more information on darknets, and how they can help keep your network safe,
check out our darknet project.
Team Cymru provides a number of query interfaces that allow for the
mapping of IP addresses to BGP prefixes and Autonomous System Numbers
(ASNs), based on BGP feeds from our 50+ BGP peers, and updated every 4
hours. This data is available through traditional WHOIS (TCP 43), DNS (UDP
53), HTTP (TCP 80), and HTTPS (TCP 443). For more information on the data
available, and how to query, check out our IP to ASN Mapping Project.
The Malware Hash Registry provides the ability to perform lookups of
MD5 and SHA-1 hashes of files to see if Team Cymru's malware analysis system
has classified them as malware, along with information about when the sample
was last seen and an approximate anti-virus detection percentage. For more
information on the data returned and how to query this system, check out
the Malware Hash Registry.
Totalhash is a community malware analysis service. This service provides
users the ability to quickly find and view both static and dynamic analysis
of malware samples. An API is available to those who require programmatic
access to the service. Totalhash is the entry point to Team Cymru's
comprehensive malware service offerings. Check it out at