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