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De-Bogonising New Address Blocks
Report - 20040319

Introduction

84.128.0.0/11 is a production allocation to Deutsche Telekom; 84.192.0.0/16 and 84.255.248.0/21 are test prefixes; 195.80.239.0/24 is the RIS project's Beacon Anchor Prefix; 193.0.0.0/21 is the RIPE NCC's own production prefix.

Summary

All ASes
84.128.0.0/11 is seen by 40 out of 57 ASes (70 %)
84.192.0.0/16 is seen by 48 out of 57 ASes (84 %)
84.255.248.0/21 is seen by 48 out of 57 ASes (84 %)
195.80.239.0/24 is seen by 45 out of 57 ASes (78 %)
193.0.0.0/21 is seen by 47 out of 57 ASes (82 %)
Baseline 193.0.0.0/21
84.128.0.0/11 is seen by 37 out of 47 ASes (78 %)
84.192.0.0/16 is seen by 45 out of 47 ASes (95 %)
84.255.248.0/21 is seen by 45 out of 47 ASes (95 %)
195.80.239.0/24 is seen by 39 out of 47 ASes (82 %)
Baseline 195.80.239.0/24
84.128.0.0/11 is seen by 32 out of 45 ASes (71 %)
84.192.0.0/16 is seen by 40 out of 45 ASes (88 %)
84.255.248.0/21 is seen by 40 out of 45 ASes (88 %)
193.0.0.0/21 is seen by 39 out of 45 ASes (86 %)

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 NumberSees 84.128.0.0 /11Sees 84.192.0.0 /16Sees 84.255.248.0 /21Sees 195.80.239.0 /24Sees 193.0.0.0 /21Peers 84.128.0.0 /11Peers 84.192.0.0 /16Peers 84.255.248.0 /21Peers 195.80.239.0 /24Peers 193.0.0.0 /21
174NYYYY     
286YYYYYY    
297NYYYY     
513YYYYYY    
559YYYYYY    
1103YYYYY    Y
1221YYYYY     
1239YYYNYY    
1299YYYYYY   Y
1759YYYNY     
1853YYYYYY    
2497YYYNYY    
2516NNNYN   Y 
2603YYYYY   Y 
2914YYYYYY  Y 
3257YYYYYY   Y
3291NYYYY YYYY
3320YYYYY    Y
3333YYYYYY    
3356NYYYY    Y
3549YYYYYY    
4608YYYYY     
4637YYYYYY    
4777YYYYY     
5392YYYNY     
5400NNNYN     
5417YYYYY YYYY
5511NYYYY     
6320YYYYYYYYYY
6461NYYNN     
6762YYYYYYYYYY
7018YYYYYY  Y 
8220YNNNNY    
8251YYYYY YYY 
8289YYYYYY    
8434YYYYY     
8447NNNYN   Y 
8928YNNNNY    
9177YYYYYY    
11537NNNYY     
12654NYYYN     
12779YYYYY   Y 
12793NYYNY     
12859YYYYY YYYY
13030YYYYY     
13129YYYNYYYY Y
13237YYYYYYYYY 
15569NYYYN YYY 
15623YYYYY    Y
15879YNNNN     
16631NYYNY     
20562NNNNY     
20854YYYYY YYYY
20965NYYYY     
24875NNNYN     
25232YYYYY YYYY
28747YYYYY YYYY

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 84/8 is probably caused by incorrect prefix length based filtering somewhere along the line.

Seeing the 84/8 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 (84.128.0.0/11 84.192.0.0/16 84.255.248.0/21 195.80.239.0/24 193.0.0.0/21), 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 doesn't appear in the RIS.

All AS Paths...

12779 12654
12859 12654
13129 12654
12779 1239 13129 12654
4777 2497 13129 12654
13237 12654
1299 13237 12654
1299 1299 13237 12654
1759 1299 13237 12654
13030 13237 12654
15623 13237 12654
297 16631 174 13237 12654
2914 174 13237 12654
3549 174 13237 12654
7018 6461 13237 12654
8289 13237 12654
8434 13237 12654
15569 12654
20854 12654
4777 2516 12654
286 25232 12654
1103 20965 2603 12654
513 11537 20965 2603 12654
1853 20965 2603 12654
513 20965 2603 12654
559 513 20965 2603 12654
559 20965 2603 12654
513 559 20965 2603 12654
28747 12654
24875 28747 12654
3257 28747 12654
5392 3257 28747 12654
2914 12654
297 2914 12654
3291 12654
12793 3291 12654
3333 3291 12654
513 3291 12654
559 513 3291 12654
1103 20965 559 513 3291 12654
1853 20965 559 513 3291 12654
2603 20965 559 513 3291 12654
5511 5511 3291 12654
559 3291 12654
1103 20965 559 3291 12654
1853 20965 559 3291 12654
2603 20965 559 3291 12654
513 20965 559 3291 12654
5417 12654
6320 12654
9177 3320 6762 12654
4608 1221 4637 6762 12654
7018 12654
2914 7018 12654
3333 8251 12654
3356 3356 8251 12654
8447 12654
5400 8447 8447 8447 8447 12654
12779 1239 3320
1759 1299 3320
2603 1299 3320
13129 3320
13237 3320
12859 13237 3320
1853 3320
4777 2497 3320
286 3320
12859 286 3320
13030 286 3320
25232 286 3320
5417 286 3320
2914 3320
5392 3257 3320
3333 3320
3549 3320
1103 3549 3320
8434 3549 3320
4608 1221 4637 3320
513 3320
559 3320
6320 3320
15879 6320 3320
28747 15879 6320 3320
6762 3320
8251 6762 3320
7018 3320
15623 8220 3320
8289 3320
20854 8928 3320
9177 3320
3333
1103 3333
513 11537 1103 3333
1853 20965 1103 3333
2603 20965 1103 3333
513 20965 1103 3333
559 20965 1103 3333
513 559 20965 1103 3333
3549 1103 3333
12859 3333
13237 12859 3333
13030 13237 12859 3333
297 16631 174 13237 12859 3333
2914 174 13237 12859 3333
8289 13237 12859 3333
8434 13237 12859 3333
20562 12859 3333
286 12859 3333
1759 1299 3333
13129 3333
15623 3333
20854 3333
25232 3333
28747 3333
5392 3257 3333
3291 3333
12779 1239 3291 3333
12793 3291 3333
513 3291 3333
5511 5511 3291 3333
8251 3291 3333
9177 3320 3333
3356 3333
4777 2497 3356 3333
2914 3356 3333
4608 1221 4637 3356 3333
7018 3356 3333
5417 3333
6320 3333
6762 3333
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