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De-Bogonising New Address Blocks Report - 20070210

Previous day's report | Next day's report | Monthly view

Note: The results presented in this report are based on a few assumptions. Therefore, please keep in mind that the list of filtering ASes shown here might not be absolutely accurate or complete. For more information on the assumptions and how the report is compiled, please read below.

Summary

Anchor Prefix: 84.205.83.0/24
Size of set: 73 ASes



Visibility estimation69 (+- 1) out of 73 ASes (94 %)
Filtering ASes (3)2516 8928 11537
Uncertain ASes (part of a filtering as-path segment)2
Filtering segments (at least one filtering AS):[11537 10764] [13645 8928]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]



Visibility estimation67 (+- 2) out of 73 ASes (91 %)
Filtering ASes (3)2857 13030 29686
Uncertain ASes (part of a filtering as-path segment)5
Filtering segments (at least one filtering AS):[286 25232] [8928 25232] [10764 286 25232] [13645 8928 25232]

Details

Y - Non-filtering
N - Filtering
U - Uncertain (part of a filtering AS-path segment)

AS Number41.223.236.0 /22116.255.0.0 /16116.50.0.0 /21116.0.0.0 /24117.255.0.0 /16117.50.0.0 /21117.0.0.0 /24118.255.0.0 /16118.50.0.0 /21118.0.0.0 /24119.255.0.0 /16119.50.0.0 /21119.0.0.0 /24120.255.0.0 /16120.50.0.0 /21120.0.0.0 /24
  286YUUUUUUUUUUUUUUU
  513YYYYYYYYYYYYYYYY
  559YYYYYYYYYYYYYYYY
 1103YYYYYYYYYYYYYYYY
 1221YYYYYYYYYYYYYYYY
 1299YYYYYYYYYYYYYYYY
 1853YYYYYYYYYYYYYYYY
 1930YYYYYYYYYYYYYYYY
 2118YYYYYYYYYYYYYYYY
 2497YYYYYYYYYYYYYYYY
 2516NYYYYYYYYYYYYYYY
 2857YNNNNNNNNNNNNNNN
 2914YYYYYYYYYYYYYYYY
 3257YYYYYYYYYYYYYYYY
 3277YYYYYYYYYYYYYYYY
 3333YYYYYYYYYYYYYYYY
 3549YYYYYYYYYYYYYYYY
 3741YYYYYYYYYYYYYYYY
 4589YYYYYYYYYYYYYYYY
 4608YYYYYYYYYYYYYYYY
 4637YYYYYYYYYYYYYYYY
 4777YYYYYYYYYYYYYYYY
 5392YYYYYYYYYYYYYYYY
 6453YYYYYYYYYYYYYYYY
 6461YYYYYYYYYYYYYYYY
 6695YYYYYYYYYYYYYYYY
 6762YYYYYYYYYYYYYYYY
 6881YYYYYYYYYYYYYYYY
 7018YYYYYYYYYYYYYYYY
 7575YYYYYYYYYYYYYYYY
 8167YYYYYYYYYYYYYYYY
 8331YYYYYYYYYYYYYYYY
 8359YYYYYYYYYYYYYYYY
 8434YYYYYYYYYYYYYYYY
 8447YYYYYYYYYYYYYYYY
 8596YYYYYYYYYYYYYYYY
 8631YYYYYYYYYYYYYYYY
 8763YYYYYYYYYYYYYYYY
 8928NUUUUUUUUUUUUUUU
10429YYYYYYYYYYYYYYYY
10764UUUUUUUUUUUUUUUU
11537NYYYYYYYYYYYYYYY
12350YYYYYYYYYYYYYYYY
12654YYYYYYYYYYYYYYYY
12779YYYYYYYYYYYYYYYY
12793YYYYYYYYYYYYYYYY
12956YYYYYYYYYYYYYYYY
13030YNNNNNNNNNNNNNNN
13237YYYYYYYYYYYYYYYY
13645UUUUUUUUUUUUUUUU
14361YYYYYYYYYYYYYYYY
15837YYYYYYYYYYYYYYYY
16186YYYYYYYYYYYYYYYY
16215YYYYYYYYYYYYYYYY
16397YYYYYYYYYYYYYYYY
20483YYYYYYYYYYYYYYYY
20562YYYYYYYYYYYYYYYY
20640YYYYYYYYYYYYYYYY
20932YYYYYYYYYYYYYYYY
20965YYYYYYYYYYYYYYYY
21202YYYYYYYYYYYYYYYY
22548YYYYYYYYYYYYYYYY
22691YYYYYYYYYYYYYYYY
25232YUUUUUUUUUUUUUUU
25462YYYYYYYYYYYYYYYY
27664YYYYYYYYYYYYYYYY
28895YYYYYYYYYYYYYYYY
28917YYYYYYYYYYYYYYYY
29222YYYYYYYYYYYYYYYY
29686YNNNNNNNNNNNNNNN
31283YYYYYYYYYYYYYYYY
34347YYYYYYYYYYYYYYYY
39469YYYYYYYYYYYYYYYY

Methodology

The anchor and debogon prefixes are announced by the same router (RRC3) and AS number (AS12654). The AS-path from any point on the Internet towards the announcing router should therefore be the same for both prefixes. If this is not the case, it is assumed that debogon prefix filtering is being applied somewhere on the path.

The collection points of the AS-paths used in this report are all the RIS RRCs. Therefore, ASes covered in this report are only those seen in the AS-paths between the collection points and the anchor prefix.

To perform this report, all the AS-paths towards the anchor and the debogon prefixes are compared:

  • ASes appearing on matching anchor and debogon paths are labelled non-filtering.
  • From the unmatching AS-paths, all ASes labeled as non-filtering are removed, generating a list of AS-path segments.
  • If a segment consists of only one AS, the AS is labelled filtering.
  • All remaining ASes are labelled uncertain.

If an AS is labelled uncertain, it means that it is part of an AS-path segment in which at least one AS is considered to be filtering, but it is unconclusive which one(s).

The visibility plots show the percentage of how many ASes are estimated to be non-filtering. The grey area represents the indeterminacy caused by the ASes considered uncertain.
 

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