IPv4 Address Allocation and the BGP Routing Table Evolution
Source: University of California
The IP address consumption and the global routing table size are two of the vital parameters of the Internet growth. This paper quantitatively characterize the IPv4 ad-dress allocations made over the past six years and the global BGP routing table size changes during the same period of time. About 63,000 address blocks have been allocated since the beginning of the Internet, of which about 18,000 address blocks were allocated during the study period, from November 1997 to August 2004. Among these 18,000 allocations, 90% of them started being announced into the BGP routing table within 75 days after the allocation, while 8% of them have not been used up to now.