De-Bogonising New Address Blocks Report for APNIC

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De-Bogonising New Address Blocks Report for APNIC - 20060628

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Summary

All ASes
121.50.0.0/21	is seen by 53 out of 77 ASes	(68 %)
121.100.0.0/20	is seen by 53 out of 77 ASes	(68 %)
121.200.0.0/19	is seen by 53 out of 77 ASes	(68 %)
121.255.0.0/16	is seen by 53 out of 77 ASes	(68 %)
122.0.0.0/24	is seen by 53 out of 77 ASes	(68 %)
122.50.0.0/21	is seen by 53 out of 77 ASes	(68 %)
122.100.0.0/20	is seen by 53 out of 77 ASes	(68 %)
122.200.0.0/19	is seen by 53 out of 77 ASes	(68 %)
122.255.0.0/16	is seen by 53 out of 77 ASes	(68 %)
123.0.0.0/24	is seen by 53 out of 77 ASes	(68 %)
123.50.0.0/21	is seen by 53 out of 77 ASes	(68 %)
123.100.0.0/20	is seen by 53 out of 77 ASes	(68 %)
123.200.0.0/19	is seen by 53 out of 77 ASes	(68 %)
123.255.0.0/16	is seen by 53 out of 77 ASes	(68 %)
193.0.0.0/21	is seen by 61 out of 77 ASes	(79 %)
84.205.83.0/24	is seen by 56 out of 77 ASes	(72 %)
Baseline 193.0.0.0/21
121.50.0.0/21	is seen by 43 out of 61 ASes	(70 %)
121.100.0.0/20	is seen by 43 out of 61 ASes	(70 %)
121.200.0.0/19	is seen by 43 out of 61 ASes	(70 %)
121.255.0.0/16	is seen by 43 out of 61 ASes	(70 %)
122.0.0.0/24	is seen by 43 out of 61 ASes	(70 %)
122.50.0.0/21	is seen by 43 out of 61 ASes	(70 %)
122.100.0.0/20	is seen by 43 out of 61 ASes	(70 %)
122.200.0.0/19	is seen by 43 out of 61 ASes	(70 %)
122.255.0.0/16	is seen by 43 out of 61 ASes	(70 %)
123.0.0.0/24	is seen by 43 out of 61 ASes	(70 %)
123.50.0.0/21	is seen by 43 out of 61 ASes	(70 %)
123.100.0.0/20	is seen by 43 out of 61 ASes	(70 %)
123.200.0.0/19	is seen by 43 out of 61 ASes	(70 %)
123.255.0.0/16	is seen by 43 out of 61 ASes	(70 %)
84.205.83.0/24	is seen by 43 out of 61 ASes	(70 %)
Baseline 84.205.83.0/24
121.50.0.0/21	is seen by 47 out of 56 ASes	(83 %)
121.100.0.0/20	is seen by 47 out of 56 ASes	(83 %)
121.200.0.0/19	is seen by 47 out of 56 ASes	(83 %)
121.255.0.0/16	is seen by 47 out of 56 ASes	(83 %)
122.0.0.0/24	is seen by 47 out of 56 ASes	(83 %)
122.50.0.0/21	is seen by 47 out of 56 ASes	(83 %)
122.100.0.0/20	is seen by 47 out of 56 ASes	(83 %)
122.200.0.0/19	is seen by 47 out of 56 ASes	(83 %)
122.255.0.0/16	is seen by 47 out of 56 ASes	(83 %)
123.0.0.0/24	is seen by 47 out of 56 ASes	(83 %)
123.50.0.0/21	is seen by 47 out of 56 ASes	(83 %)
123.100.0.0/20	is seen by 47 out of 56 ASes	(83 %)
123.200.0.0/19	is seen by 47 out of 56 ASes	(83 %)
123.255.0.0/16	is seen by 47 out of 56 ASes	(83 %)
193.0.0.0/21	is seen by 43 out of 56 ASes	(76 %)

Details

Column Descriptions: AS Number - autonomous system numbers seen anywhere in a path to any of the prefixes; Sees ... - a tick (or 'Y' if viewing this without graphics) indicates that we see the specified prefix with this AS somewhere in the AS Path; Peers ... - a tick here indicates that this AS is seen as an immediate neighbour of the AS announcing the specified prefix.

AS Number	Sees 121.50.0.0 /21	Sees 121.100.0.0 /20	Sees 121.200.0.0 /19	Sees 121.255.0.0 /16	Sees 122.0.0.0 /24	Sees 122.50.0.0 /21	Sees 122.100.0.0 /20	Sees 122.200.0.0 /19	Sees 122.255.0.0 /16	Sees 123.0.0.0 /24	Sees 123.50.0.0 /21	Sees 123.100.0.0 /20	Sees 123.200.0.0 /19	Sees 123.255.0.0 /16	Sees 193.0.0.0 /21	Sees 84.205.83.0 /24	\|	Peers 121.50.0.0 /21	Peers 121.100.0.0 /20	Peers 121.200.0.0 /19	Peers 121.255.0.0 /16	Peers 122.0.0.0 /24	Peers 122.50.0.0 /21	Peers 122.100.0.0 /20	Peers 122.200.0.0 /19	Peers 122.255.0.0 /16	Peers 123.0.0.0 /24	Peers 123.50.0.0 /21	Peers 123.100.0.0 /20	Peers 123.200.0.0 /19	Peers 123.255.0.0 /16	Peers 193.0.0.0 /21	Peers 84.205.83.0 /24
174																	\|
286																	\|
513																	\|
559																	\|
701																	\|
1103																	\|
1273																	\|
1299																	\|
1853																	\|
2118																	\|
2497																	\|
2914																	\|
3257																	\|
3267																	\|
3277																	\|
3320																	\|
3333																	\|
3343																	\|
3356																	\|
3549																	\|
4230																	\|
4637																	\|
4777																	\|
5392																	\|
5511																	\|
6067																	\|
6140																	\|
6320																	\|
6453																	\|
6461																	\|
6762																	\|
7575																	\|
8167																	\|
8195																	\|
8210																	\|
8331																	\|
8342																	\|
8434																	\|
8447																	\|
8468																	\|
8631																	\|
8928																	\|
9009																	\|
10764																	\|
11537																	\|
12350																	\|
12654																	\|
12695																	\|
12779																	\|
12793																	\|
12859																	\|
12956																	\|
12976																	\|
13030																	\|
13237																	\|
13645																	\|
16034																	\|
16150																	\|
16215																	\|
16735																	\|
17379																	\|
19151																	\|
20483																	\|
20485																	\|
20562																	\|
20932																	\|
20965																	\|
22548																	\|
22691																	\|
25232																	\|
27664																	\|
28895																	\|
28917																	\|
29329																	\|
30733																	\|
30844																	\|
39202																	\|

Some Explanations...

Not seeing the RIPE NCC's prefix 193.0.0.0/21 is probably caused by seeing one of the other prefixes from a peer which does not provide the RIS with a full feed.

Seeing the /16 but not the /21 in the new allocations is probably caused by incorrect prefix length based filtering somewhere along the line.

Seeing the newly allocated prefixes but not the 195.80.239.0/24 prefix is probably caused by filtering based on the RIR's minimum allocation size somewhere.

How these statistics were gathered

For each of the prefixes (121.50.0.0/21 121.100.0.0/20 121.200.0.0/19 121.255.0.0/16 122.0.0.0/24 122.50.0.0/21 122.100.0.0/20 122.200.0.0/19 122.255.0.0/16 123.0.0.0/24 123.50.0.0/21 123.100.0.0/20 123.200.0.0/19 123.255.0.0/16 193.0.0.0/21 84.205.83.0/24), all RIB entries and Updates for a single day were extracted from the RIS database and from this a list of all AS Paths seen for each prefix was generated. We class an AS as "seeing" one of the prefixes if that AS appears anywhere in an AS Path to that prefix. That an AS is shown as not seeing a particular prefix only indicates that this does not appear in the RIS.

All AS Paths...

27664 16735 12956 12654
12793 1299 12654
28895 1299 12654
28917 1299 12654
8447 1299 12654
16034 16150 12654
13030 20562 12654
16215 13030 20562 12654
13237 20562 12654
13645 19151 20562 12654
20483 12976 8195 20562 12654
3277 20483 12976 8195 20562 12654
8331 20483 12976 8195 20562 12654
8434 8210 20562 12654
8468 20562 12654
20932 12654
13237 25232 12654
12350 174 25232 12654
12793 174 25232 12654
16034 174 25232 12654
16150 174 25232 12654
16215 174 25232 12654
5511 174 25232 12654
6067 174 25232 12654
6140 174 25232 12654
8434 174 25232 12654
286 25232 12654
1853 20965 11537 10764 513 286 25232 12654
559 20965 11537 10764 513 286 25232 12654
7575 11537 10764 513 286 25232 12654
12350 513 286 25232 12654
3356 513 513 286 25232 12654
20483 12976 8195 25232 12654
20485 2118 20483 12976 8195 25232 12654
8342 2118 20483 12976 8195 25232 12654
28917 1299 8342 2118 20483 12976 8195 25232 12654
3277 20483 12976 8195 25232 12654
8331 20483 12976 8195 25232 12654
28895 8631 20483 12976 8195 25232 12654
28917 8631 20483 12976 8195 25232 12654
29329 8631 20483 12976 8195 25232 12654
8447 25232 12654
12350 8928 25232 12654
12779 8928 25232 12654
13645 8928 25232 12654
22691 8928 25232 12654
5392 8928 25232 12654
30844 16150 9009 25232 12654
22691 2914 12654
12779 3356 12654
16034 3356 12654
1853 20965 11537 10764 513 3356 3356 12654
559 20965 11537 10764 513 3356 3356 12654
12350 513 3356 3356 12654
8342 3356 12654
13237 6453 12654
20485 6453 12654
2497 6453 12654
4777 2497 6453 12654