Irfan, This is sent weekly to the list:
Routing Table Report 04:00 +10GMT Sat 09 May, 2009 Report Website: http://thyme.apnic.net Detailed Analysis: http://thyme.apnic.net/current/ Analysis Summary ---------------- BGP routing table entries examined: 288037 Prefixes after maximum aggregation: 136199 Deaggregation factor: 2.11 Unique aggregates announced to Internet: 140785 Total ASes present in the Internet Routing Table: 31199 Prefixes per ASN: 9.23 Origin-only ASes present in the Internet Routing Table: 27142 Origin ASes announcing only one prefix: 13239 Transit ASes present in the Internet Routing Table: 4057 Transit-only ASes present in the Internet Routing Table: 96 Average AS path length visible in the Internet Routing Table: 3.6 Max AS path length visible: 33 Max AS path prepend of ASN (43683) 31 Prefixes from unregistered ASNs in the Routing Table: 461 Unregistered ASNs in the Routing Table: 151 Number of 32-bit ASNs allocated by the RIRs: 142 Prefixes from 32-bit ASNs in the Routing Table: 30 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 194 Number of addresses announced to Internet: 2039977920 Equivalent to 121 /8s, 151 /16s and 151 /24s Percentage of available address space announced: 55.0 Percentage of allocated address space announced: 63.7 Percentage of available address space allocated: 86.4 Percentage of address space in use by end-sites: 76.9 Total number of prefixes smaller than registry allocations: 142407 On Wed, 2009-05-13 at 16:53 +0100, Irfan Zakiuddin wrote: > Hi all, > > I have scouted around for this information, but not get very far. I'm > hoping someone will have answers at hand. > > What I want to know is roughly how many : > > 1. ASes there are in the world today? > 2. BGP routers there are, for intra-domain as well as inter-domain routing, > in total in the world? > 3. BGP routers do the largest ASes have? > > > Really interesting would then be to say either how fast the above numbers > are growing, or to give estimates for what the answers to 1-3 will be in 5 > years time. > > An Internet source that provides the above information would be most useful > - though I can't seem to find it with google. > > I'd be grateful for answer to be sent to me directly, whether you also post > to NANOG is up to you. > > thanks in advance. > > irfan -- "Prediction is very difficult, especially about the future." Niels Bohr -- Ray Sanders Linux Administrator Village Voice Media Office: 602-744-6547 Cell: 602-300-4344