De-Bogonising New Address Blocks Report for RIPE NCC- 20060912

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De-Bogonising New Address Blocks Report for RIPE NCC - 20060912

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Summary

All ASes
91.255.248.0/21	is seen by 63 out of 77 ASes	(81 %)
77.255.248.0/21	is seen by 56 out of 77 ASes	(72 %)
78.255.248.0/21	is seen by 56 out of 77 ASes	(72 %)
79.255.248.0/21	is seen by 56 out of 77 ASes	(72 %)
91.192.0.0/16	is seen by 63 out of 77 ASes	(81 %)
77.192.0.0/16	is seen by 56 out of 77 ASes	(72 %)
78.192.0.0/16	is seen by 56 out of 77 ASes	(72 %)
79.192.0.0/16	is seen by 56 out of 77 ASes	(72 %)
193.0.0.0/21	is seen by 64 out of 77 ASes	(83 %)
84.205.83.0/24	is seen by 65 out of 77 ASes	(84 %)
Baseline 193.0.0.0/21
91.255.248.0/21	is seen by 52 out of 64 ASes	(81 %)
77.255.248.0/21	is seen by 45 out of 64 ASes	(70 %)
78.255.248.0/21	is seen by 45 out of 64 ASes	(70 %)
79.255.248.0/21	is seen by 45 out of 64 ASes	(70 %)
91.192.0.0/16	is seen by 52 out of 64 ASes	(81 %)
77.192.0.0/16	is seen by 45 out of 64 ASes	(70 %)
78.192.0.0/16	is seen by 45 out of 64 ASes	(70 %)
79.192.0.0/16	is seen by 45 out of 64 ASes	(70 %)
84.205.83.0/24	is seen by 52 out of 64 ASes	(81 %)
Baseline 84.205.83.0/24
91.255.248.0/21	is seen by 63 out of 65 ASes	(96 %)
77.255.248.0/21	is seen by 55 out of 65 ASes	(84 %)
78.255.248.0/21	is seen by 55 out of 65 ASes	(84 %)
79.255.248.0/21	is seen by 55 out of 65 ASes	(84 %)
91.192.0.0/16	is seen by 63 out of 65 ASes	(96 %)
77.192.0.0/16	is seen by 55 out of 65 ASes	(84 %)
78.192.0.0/16	is seen by 55 out of 65 ASes	(84 %)
79.192.0.0/16	is seen by 55 out of 65 ASes	(84 %)
193.0.0.0/21	is seen by 52 out of 65 ASes	(80 %)

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 91.255.248.0 /21	Sees 77.255.248.0 /21	Sees 78.255.248.0 /21	Sees 79.255.248.0 /21	Sees 91.192.0.0 /16	Sees 77.192.0.0 /16	Sees 78.192.0.0 /16	Sees 79.192.0.0 /16	Sees 193.0.0.0 /21	Sees 84.205.83.0 /24	\|	Peers 91.255.248.0 /21	Peers 77.255.248.0 /21	Peers 78.255.248.0 /21	Peers 79.255.248.0 /21	Peers 91.192.0.0 /16	Peers 77.192.0.0 /16	Peers 78.192.0.0 /16	Peers 79.192.0.0 /16	Peers 193.0.0.0 /21	Peers 84.205.83.0 /24
174											\|
286											\|
513											\|
559											\|
701											\|
1103											\|
1239											\|
1273											\|
1299											\|
1853											\|
1901											\|
2497											\|
2516											\|
2857											\|
2914											\|
3257											\|
3267											\|
3277											\|
3333											\|
3343											\|
3356											\|
3549											\|
4230											\|
4777											\|
5392											\|
5417											\|
6140											\|
6320											\|
6453											\|
6695											\|
6762											\|
7575											\|
8167											\|
8195											\|
8210											\|
8331											\|
8434											\|
8447											\|
8596											\|
8631											\|
8763											\|
8928											\|
10764											\|
11537											\|
12350											\|
12654											\|
12695											\|
12779											\|
12793											\|
12859											\|
12976											\|
13030											\|
13237											\|
13645											\|
15435											\|
15756											\|
15772											\|
15835											\|
15837											\|
16215											\|
20483											\|
20562											\|
20640											\|
20932											\|
20965											\|
21202											\|
22548											\|
22691											\|
25232											\|
25462											\|
27664											\|
28895											\|
28917											\|
29329											\|
29686											\|
30912											\|
39637											\|

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 (91.255.248.0/21 77.255.248.0/21 78.255.248.0/21 79.255.248.0/21 91.192.0.0/16 77.192.0.0/16 78.192.0.0/16 79.192.0.0/16 193.0.0.0/21 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...

28895 1299 12654
28917 1299 12654
12859 20562 12654
286 20562 12654
5417 20562 12654
20483 12976 8195 20562 12654
3277 20483 12976 8195 20562 12654
8331 20483 12976 8195 20562 12654
29329 8631 20483 12976 8195 20562 12654
8434 8210 20562 12654
20932 12654
16215 174 25232 12654
22691 2914 174 25232 12654
5392 174 25232 12654
8434 174 25232 12654
286 25232 12654
7575 11537 10764 513 286 25232 12654
12350 513 286 25232 12654
1853 20965 11537 513 513 286 25232 12654
559 20965 11537 513 513 286 25232 12654
559 286 25232 12654
1853 20965 559 286 25232 12654
7575 20965 559 286 25232 12654
8763 286 25232 12654
8447 25232 12654
12350 8928 25232 12654
12779 8928 25232 12654
22691 8928 25232 12654
5392 8928 25232 12654
25462 12654
12793 25462 12654
12859 25462 12654
13030 25462 12654
13237 25462 12654
13645 25462 12654
15435 25462 12654
20483 12976 15835 15756 25462 12654
3277 20483 12976 15835 15756 25462 12654
8331 20483 12976 15835 15756 25462 12654
29329 8631 20483 12976 15835 15756 25462 12654
15837 25462 12654
16215 25462 12654
8596 1901 25462 12654
21202 25462 12654
2497 25462 12654
2857 25462 12654
3257 25462 12654
3333 25462 12654
3356 25462 12654
15772 6695 25462 12654
20640 6695 25462 12654
8763 6695 25462 12654
22691 2914 12654
6453 12654
2497 6453 12654
12350 513 3549 3549 6453 12654
5392 3549 6453 12654
6762 12654
12779 1239 6762 12654
1853 1239 6762 12654
6140 1239 6762 12654
4777 2516 6762 12654
27664 3549 6762 12654
7575 6762 12654
22548 8167 6762 12654
8447 6762 12654
3333
13645 1273 1103 3333
22691 1273 1103 3333
1853 20965 1103 3333
559 20965 1103 3333
7575 20965 1103 3333
27664 3549 1103 3333
12859 3333
12793 12859 3333
15772 12859 3333
15837 12859 3333
16215 174 12859 3333
25232 174 12859 3333
5392 174 12859 3333
6140 174 12859 3333
8447 174 12859 3333
20562 12859 3333
20640 12859 3333
2857 12859 3333
286 12859 3333
39637 12859 3333
8763 12859 3333
28895 1299 3333
28917 1299 3333
13030 3333
13237 3333
15435 3333
20932 3333
25462 3333
3277 3267 3343 25462 3333
286 3333
21202 30912 8928 286 3333
29686 3333
8596 1901 3257 3333
3356 3333
12350 3356 3333
8331 12695 12695 3356 3333
12779 3356 3333
2497 3356 3333
4777 2497 3356 3333
22548 4230 701 3356 3333
5417 3333
6453 6320 3333
6762 3333
20483 12976 8195 3333
8434 8210 3333


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