De-Bogonising New Address Blocks Report for RIPE NCC- 20060908

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De-Bogonising New Address Blocks Report for RIPE NCC - 20060908

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Summary

All ASes
91.255.248.0/21	is seen by 109 out of 121 ASes	(90 %)
77.255.248.0/21	is seen by 99 out of 121 ASes	(81 %)
78.255.248.0/21	is seen by 99 out of 121 ASes	(81 %)
79.255.248.0/21	is seen by 99 out of 121 ASes	(81 %)
91.192.0.0/16	is seen by 109 out of 121 ASes	(90 %)
77.192.0.0/16	is seen by 99 out of 121 ASes	(81 %)
78.192.0.0/16	is seen by 99 out of 121 ASes	(81 %)
79.192.0.0/16	is seen by 99 out of 121 ASes	(81 %)
193.0.0.0/21	is seen by 75 out of 121 ASes	(61 %)
84.205.83.0/24	is seen by 111 out of 121 ASes	(91 %)
Baseline 193.0.0.0/21
91.255.248.0/21	is seen by 71 out of 75 ASes	(94 %)
77.255.248.0/21	is seen by 68 out of 75 ASes	(90 %)
78.255.248.0/21	is seen by 68 out of 75 ASes	(90 %)
79.255.248.0/21	is seen by 68 out of 75 ASes	(90 %)
91.192.0.0/16	is seen by 71 out of 75 ASes	(94 %)
77.192.0.0/16	is seen by 68 out of 75 ASes	(90 %)
78.192.0.0/16	is seen by 68 out of 75 ASes	(90 %)
79.192.0.0/16	is seen by 68 out of 75 ASes	(90 %)
84.205.83.0/24	is seen by 71 out of 75 ASes	(94 %)
Baseline 84.205.83.0/24
91.255.248.0/21	is seen by 108 out of 111 ASes	(97 %)
77.255.248.0/21	is seen by 92 out of 111 ASes	(82 %)
78.255.248.0/21	is seen by 92 out of 111 ASes	(82 %)
79.255.248.0/21	is seen by 92 out of 111 ASes	(82 %)
91.192.0.0/16	is seen by 108 out of 111 ASes	(97 %)
77.192.0.0/16	is seen by 92 out of 111 ASes	(82 %)
78.192.0.0/16	is seen by 92 out of 111 ASes	(82 %)
79.192.0.0/16	is seen by 92 out of 111 ASes	(82 %)
193.0.0.0/21	is seen by 71 out of 111 ASes	(63 %)

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
101											\|
174											\|
209											\|
286											\|
513											\|
559											\|
701											\|
702											\|
1103											\|
1221											\|
1239											\|
1273											\|
1299											\|
1668											\|
1853											\|
1901											\|
2497											\|
2516											\|
2914											\|
3216											\|
3246											\|
3257											\|
3267											\|
3277											\|
3292											\|
3320											\|
3333											\|
3343											\|
3356											\|
3491											\|
3549											\|
3561											\|
3741											\|
4230											\|
4608											\|
4637											\|
4777											\|
5392											\|
5400											\|
5417											\|
5511											\|
6067											\|
6140											\|
6320											\|
6453											\|
6461											\|
6509											\|
6706											\|
6730											\|
6762											\|
6820											\|
6881											\|
6939											\|
7018											\|
7575											\|
7911											\|
8167											\|
8195											\|
8210											\|
8331											\|
8342											\|
8419											\|
8434											\|
8447											\|
8468											\|
8596											\|
8631											\|
8928											\|
8943											\|
9044											\|
10764											\|
11537											\|
12350											\|
12654											\|
12695											\|
12779											\|
12793											\|
12859											\|
12976											\|
13030											\|
13062											\|
13237											\|
13645											\|
15435											\|
15703											\|
15756											\|
15835											\|
16034											\|
16150											\|
16186											\|
16215											\|
16265											\|
16397											\|
19151											\|
19401											\|
20483											\|
20485											\|
20562											\|
20932											\|
20965											\|
20976											\|
21202											\|
21318											\|
22548											\|
22691											\|
25232											\|
25462											\|
25512											\|
25577											\|
27664											\|
28895											\|
28917											\|
29329											\|
29686											\|
30844											\|
31283											\|
35422											\|
39202											\|
39637											\|
65000											\|
65001											\|

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...

12793 1299 12654
8596 12793 1299 12654
28895 1299 12654
28917 1299 12654
8447 1299 12654
13030 16150 15703 12654
16215 13030 16150 15703 12654
13237 16150 15703 12654
13645 19151 20562 16150 15703 12654
20932 16150 15703 12654
16034 20976 16150 15703 12654
25462 16150 15703 12654
20485 25462 16150 15703 12654
30844 16150 15703 12654
6067 16150 15703 12654
8342 16150 15703 12654
8468 16150 15703 12654
39202 25577 16265 12654
1103 20562 12654
12859 20562 12654
13030 20562 12654
16215 13030 20562 12654
13237 20562 12654
15435 20562 12654
16034 16150 20562 12654
25462 16150 20562 12654
8331 20483 12976 8195 16150 20562 12654
29329 8631 20483 12976 8195 16150 20562 12654
8342 16150 20562 12654
13645 19151 20562 12654
25462 20562 12654
20485 25462 20562 12654
286 20562 12654
16186 31283 20562 12654
3333 20562 12654
5417 20562 12654
3333 6320 20562 12654
8434 8210 20562 12654
8468 20562 12654
20932 12654
25232 12654
8596 12793 174 25232 12654
16034 174 25232 12654
16034 16150 174 25232 12654
30844 16150 174 25232 12654
8342 16150 174 25232 12654
16215 174 25232 12654
22691 2914 174 25232 12654
5392 174 25232 12654
5511 174 25232 12654
559 174 25232 12654
1103 20965 559 174 25232 12654
1853 20965 559 174 25232 12654
7575 20965 559 174 25232 12654
6067 174 25232 12654
6140 174 25232 12654
8342 174 25232 12654
8447 174 25232 12654
286 25232 12654
25462 286 286 286 25232 12654
3741 286 286 286 25232 12654
3549 286 25232 12654
513 286 25232 12654
1103 20965 11537 10764 513 286 25232 12654
1853 20965 11537 10764 513 286 25232 12654
559 20965 11537 10764 513 286 25232 12654
7575 11537