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De-Bogonising New Address Blocks Report - 20070226

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: 123 ASes



Visibility estimation115 (+- 3) out of 123 ASes (93 %)
Filtering ASes (4)701 2852 16150 16397
Uncertain ASes (part of a filtering as-path segment)7
Filtering segments (at least one filtering AS):[9270 7660 22388] [16150 6939] [24489 7660] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]



Visibility estimation109 (+- 4) out of 123 ASes (88 %)
Filtering ASes (9)2857 3491 8402 10764 13030 16150 16397 25232 29686
Uncertain ASes (part of a filtering as-path segment)9
Filtering segments (at least one filtering AS):[2852 25232] [2857 3491] [9270 7660 22388 10764] [10764 19401] [16150 6939] [24489 7660 10764 19401] [65000 65001]

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
  286YYYYYYYYYYYYYYYY
  513YYYYYYYYYYYYYYYY
  559YYYYYYYYYYYYYYYY
  701NYYYYYYYYYYYYYYY
  702YYYYYYYYYYYYYYYY
 1103YYYYYYYYYYYYYYYY
 1221YYYYYYYYYYYYYYYY
 1239YYYYYYYYYYYYYYYY
 1273YYYYYYYYYYYYYYYY
 1299YYYYYYYYYYYYYYYY
 1853YYYYYYYYYYYYYYYY
 1901YYYYYYYYYYYYYYYY
 1930YYYYYYYYYYYYYYYY
 2118YYYYYYYYYYYYYYYY
 2119YYYYYYYYYYYYYYYY
 2497YYYYYYYYYYYYYYYY
 2516YYYYYYYYYYYYYYYY
 2852NUUUUUUUUUUUUUUU
 2857YNNNNNNNNNNNNNNN
 2914YYYYYYYYYYYYYYYY
 3216YYYYYYYYYYYYYYYY
 3257YYYYYYYYYYYYYYYY
 3267YYYYYYYYYYYYYYYY
 3277YYYYYYYYYYYYYYYY
 3320YYYYYYYYYYYYYYYY
 3333YYYYYYYYYYYYYYYY
 3343YYYYYYYYYYYYYYYY
 3356YYYYYYYYYYYYYYYY
 3491YNNNNNNNNNNNNNNN
 3549YYYYYYYYYYYYYYYY
 3561YYYYYYYYYYYYYYYY
 3741YYYYYYYYYYYYYYYY
 4436YYYYYYYYYYYYYYYY
 4589YYYYYYYYYYYYYYYY
 4608YYYYYYYYYYYYYYYY
 4637YYYYYYYYYYYYYYYY
 4777YYYYYYYYYYYYYYYY
 5392YYYYYYYYYYYYYYYY
 5400YYYYYYYYYYYYYYYY
 5511YYYYYYYYYYYYYYYY
 5588YYYYYYYYYYYYYYYY
 6067YYYYYYYYYYYYYYYY
 6453YYYYYYYYYYYYYYYY
 6461YYYYYYYYYYYYYYYY
 6667YYYYYYYYYYYYYYYY
 6695YYYYYYYYYYYYYYYY
 6730YYYYYYYYYYYYYYYY
 6762YYYYYYYYYYYYYYYY
 6881YYYYYYYYYYYYYYYY
 6939UUUUUUUUUUUUUUUU
 7018YYYYYYYYYYYYYYYY
 7575YYYYYYYYYYYYYYYY
 7660UUUUUUUUUUUUUUUU
 8167YYYYYYYYYYYYYYYY
 8210YYYYYYYYYYYYYYYY
 8220YYYYYYYYYYYYYYYY
 8331YYYYYYYYYYYYYYYY
 8359YYYYYYYYYYYYYYYY
 8402YNNNNNNNNNNNNNNN
 8419YYYYYYYYYYYYYYYY
 8434YYYYYYYYYYYYYYYY
 8447YYYYYYYYYYYYYYYY
 8468YYYYYYYYYYYYYYYY
 8596YYYYYYYYYYYYYYYY
 8631YYYYYYYYYYYYYYYY
 8763YYYYYYYYYYYYYYYY
 8881YYYYYYYYYYYYYYYY
 8928YYYYYYYYYYYYYYYY
 8943YYYYYYYYYYYYYYYY
 9009YYYYYYYYYYYYYYYY
 9270UUUUUUUUUUUUUUUU
10429YYYYYYYYYYYYYYYY
10764YNNNNNNNNNNNNNNN
11537YYYYYYYYYYYYYYYY
12350YYYYYYYYYYYYYYYY
12654YYYYYYYYYYYYYYYY
12779YYYYYYYYYYYYYYYY
12793YYYYYYYYYYYYYYYY
12956YYYYYYYYYYYYYYYY
13030YNNNNNNNNNNNNNNN
13237YYYYYYYYYYYYYYYY
13645YYYYYYYYYYYYYYYY
14361YYYYYYYYYYYYYYYY
15837YYYYYYYYYYYYYYYY
16034YYYYYYYYYYYYYYYY
16150NNNNNNNNNNNNNNNN
16186YYYYYYYYYYYYYYYY
16215YYYYYYYYYYYYYYYY
16397NNNNNNNNNNNNNNNN
19401YUUUUUUUUUUUUUUU
20483YYYYYYYYYYYYYYYY
20485YYYYYYYYYYYYYYYY
20562YYYYYYYYYYYYYYYY
20640YYYYYYYYYYYYYYYY
20932YYYYYYYYYYYYYYYY
20965YYYYYYYYYYYYYYYY
21202YYYYYYYYYYYYYYYY
22388UUUUUUUUUUUUUUUU
22548YYYYYYYYYYYYYYYY
22691YYYYYYYYYYYYYYYY
24489UUUUUUUUUUUUUUUU
24490YYYYYYYYYYYYYYYY
25232YNNNNNNNNNNNNNNN
25462YYYYYYYYYYYYYYYY
25512YYYYYYYYYYYYYYYY
25577YYYYYYYYYYYYYYYY
26943YYYYYYYYYYYYYYYY
27664YYYYYYYYYYYYYYYY
28895YYYYYYYYYYYYYYYY
28917YYYYYYYYYYYYYYYY
29222YYYYYYYYYYYYYYYY
29636YYYYYYYYYYYYYYYY
29686YNNNNNNNNNNNNNNN
30071YYYYYYYYYYYYYYYY
30844YYYYYYYYYYYYYYYY
30912YYYYYYYYYYYYYYYY
31283YYYYYYYYYYYYYYYY
34245YYYYYYYYYYYYYYYY
34347YYYYYYYYYYYYYYYY
39202YYYYYYYYYYYYYYYY
39469YYYYYYYYYYYYYYYY
65000UUUUUUUUUUUUUUUU
65001UUUUUUUUUUUUUUUU

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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