BGP Routing Table Analysis - RouteViews Data

Latest Data: 11:02 AEST Wednesday September 12, 2012

NB: RouteViews data includes iBGP information from some ASNs. Treat the information provided below appropriately.

Summaries

• Analysis Summary, basically the header of the daily e-mail.
• Prefixes visible from AfriNIC, APNIC, ARIN, LACNIC and RIPE NCC address blocks.
• Address span per AS Globally, AfriNIC, APNIC, ARIN, LACNIC and RIPE NCC. These are the ASNs who are originating the most address space to the Internet.
• Prefixes announced from AfriNIC, APNIC, ARIN, LACNIC and RIPE NCC region ASNs.
• League table of number of prefixes announced per ASN Globally, AfriNIC, APNIC, ARIN, LACNIC and RIPE NCC. These are the ASNs who are contributing most to the size of the Internet Routing Table.
• Detailed table of prefixes per ASNs
• League table of the possible Aggregation per ASN Globally, AfriNIC, APNIC, ARIN, LACNIC and RIPE NCC. These are the ASNs who are the biggest polluters when it comes to what they announce to the Internet.
• Looking at the possible aggregation, here are the CIDRisation possibilities per ASN.

Things that shouldn't be here

• Advertised yet unassigned addresses
• Unassigned, reserved and private ASNs in use
• Prefixes from private and non-routed address space
• Unregistered ASNs

Other data

• Prefixes longer than /24 and their Origin ASN
• Number of prefixes announced per prefix length
• Number of /24s announced per /8 block
• Number of prefixes per /8 block
• Number of ASNs announcing less than 20 prefixes
• Table of advertised prefixes smaller than registry allocations listed by ASN
• Table of advertised prefixes smaller than registry allocations (per /8 block)
• Number of prefixes transited per AS
• Prefixes originated by 32-bit ASNs

Maps

Maybe something can be done with these. Converted to JPEGS to make pictures with pretty colours perhaps?

• Map of assigned /24s (per /16)
• Map of assigned ASNs

Misc Data

• /8s allocated to the RIRs. Just repeats the IANA allocation file really.
• Raw BGP table in this view. Sanitised version of the BGP table listing prefix and its origin ASN.
• ASN to name mapping for ASNs visible on the Internet today.