`` Bogon '' is an informal name for an IP packet on the public Internet that claims to be from an area of the IP address space that is not used . The space not yet assigned by the Internet Assigned Numbers Authority ( IANA ) or a delegated Regional Internet Registry ( RIR ) . A bogon is a bogus IP address , and an informal name for an IP packet on the public Internet that claims to be from an area of the IP address space reserved , but not yet allocated or delegated by the Internet Assigned Numbers Authority ( IANA ) or a delegated Regional Internet Registry ( RIR ) .