Weekly Routing Table Report

Routing Analysis cscora at dev.apnic.net
Thu Oct 25 14:05:42 EDT 2001


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats at lists.apnic.net

For a graphical representation, please see http://www.apnic.net/stats/bgp.

If you have any comments please contact Philip Smith <pfs at cisco.com>.

Routing Table Report   26 Oct, 2001

Analysis Summary
----------------

BGP routing table entries examined:                            109470
Origin ASes present in the Internet Routing Table:              11961
Origin ASes announcing only one prefix:                          4434
Transit ASes present in the Internet Routing Table:              1580
Average AS path length visible in the Internet Routing Table:     5.3
    Max AS path length visible:                                    17
Illegal AS announcements present in the Routing Table:             50
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    15
Number of addresses announced to Internet:                 1255266365
    Equivalent to 74 /8s, 209 /16s and 216 /24s
    Percentage of available address space announced:             33.9
    Percentage of allocated address space announced:             64.6
    Percentage of available address space allocated:             52.4
Total number of prefixes smaller than registry allocations:     74577

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                  16784
Prefixes being announced from the APNIC address blocks:         15268
APNIC Region origin ASes present in the Internet Routing Table:  1382
APNIC Region origin ASes announcing only one prefix:              459
APNIC Region transit ASes present in the Internet Routing Table:  240
Average APNIC Region AS path length visible:                      5.1
    Max APNIC Region AS path length visible:                       14
Number of APNIC addresses announced to Internet:             83195575
    Equivalent to 4 /8s, 245 /16s and 118 /24s
    Percentage of available APNIC address space announced:       70.2

APNIC AS Blocks        4608 - 4864, 7467 - 7722, 9216 - 10239
                       17408 - 18431, 23552 - 24575
APNIC Address Blocks   61/8, 202/7, 210/7 and 218/7

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                   74655
Prefixes being announced from the ARIN address blocks:          53426
ARIN Region origin ASes present in the Internet Routing Table:   7182
ARIN Region origin ASes announcing only one prefix:              2161
ARIN Region transit ASes present in the Internet Routing Table:   733
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        17
Number of ARIN addresses announced to Internet:             219300485
    Equivalent to 13 /8s, 18 /16s and 66 /24s
    Percentage of available ARIN address space announced:        81.7

ARIN AS Blocks         1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
                       2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153
                       3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466
                       7723 - 8191, 10240 - 12287, 13312 - 15359
                       16384 - 17407, 18432 - 20479, 21504 - 23551
ARIN Address Blocks    24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6,
                       208/7 and 216/8

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                   18031
Prefixes being announced from the RIPE address blocks:          14444
RIPE Region origin ASes present in the Internet Routing Table:   3401
RIPE Region origin ASes announcing only one prefix:              1814
RIPE Region transit ASes present in the Internet Routing Table:   606
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        15
Number of RIPE addresses announced to Internet:             109440750
    Equivalent to 6 /8s, 133 /16s and 238 /24s
    Percentage of available RIPE address space announced:        72.5

RIPE AS Blocks         1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
                       2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
                       6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
                       20480 - 21503
RIPE Address Blocks    62/8, 80/7, 193/8, 194/7, 212/7 and 217/8

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  Description
 1221     1574       1307       Telstra Pty Ltd
 2764      408        359       connect.com.au pty ltd
  703      377        361       UUNET Technologies, Inc. 
 2907      374       1865       SINET Japan
 4755      300        163       Videsh Sanchar Nigam Ltd. Aut
 7474      292        274       Optus Communications Pty Ltd
 4134      251       1881       Data Communications Bureau
 4766      186       1466       Korea Internet Exchange for "
 4740      173         26       OzEmail ISP
 1659      172       1173       Taiwan Academic Network (TANe
 7539      162        157       TANet2, sponsored by NSC, TAI
 9443      160         52       Primus Telecommunications
17557      143          9       Pakistan Telecom
 2521      139        171       PSINet Japan
 4812      132        298       China Telecom (Group)
 9768      131        363       Korea Telecom
 4786      123         14       NetConnect Communications Pty
 9583      123         53       Satyam Infoway Ltd.,
 4763      121         69       Telstra New Zealand
 4713      118        901       NTT Communications Corporatio

RIPE Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  Description
  702      941       1943       UUNET Technologies, Inc. 
 3301      435        950       TeliaNet Sweden
 1257      273        516       SWIPnet Swedish IP Network
  680      241       2309       DFN-IP service G-WiN
 3215      236        539       France Telecom / &Equant
 5515      195        688       Sonera Finland Autonomous Sys
 3320      193       1941       Deutsche Telekom AG
  786      185       1890       The JANET IP Service
 8708      164         17       Romania Data Systems S.A.
 5495      162          3       University Network
15870      141         10       Global Center Frankfurt
 5400      139         64       Concert European Core Network
  719      133        289       LANLINK autonomous system
 3303      130        560       Swisscom Ltd
 2856      129        776       BTnet UK Regional network
 1270      127        724       UUNET Germany
 5549      124         82       Nextra Deutschland GmbH + Co.
 1103      119       3974       SURFnet BV
15878      115          9       Global Center Paris
  517      112        252       KPNQwest Germany GmbH

ARIN Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  Description
  701     2279       9099       UUNET Technologies, Inc. 
 3908     1175       1691       Supernet, Inc. 
 7018     1077       7325       AT&T 
 7046      863       1024       UUNET Technologies, Inc. 
    1      849       8541       BBN Planet 
 1239      733       3242       Sprint 
  209      576       2238       Qwest 
 3967      542        461       Exodus Communication 
  690      507         74       Merit Network 
 2914      470       2265       Verio, Inc. 
 4293      450        113       Cable & Wireless USA 
 2149      410        329       Performance Systems, Inc. 
 3561      403       2350       Cable & Wireless USA 
 4323      402        372       Time Warner Communications, I
 3549      387        843       Global Crossing 
  577      353        636       Bell Advanced Communications 
  705      352         64       UUNET Technologies, Inc. 
15290      343        339       AT&T Canada IES 
 3741      342        757       The Internet Solution 
 4151      337       1250       USDA 

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  Description
  701     2279       9099       UUNET Technologies, Inc. 
 1221     1574       1307       Telstra Pty Ltd
 3908     1175       1691       Supernet, Inc. 
 7018     1077       7325       AT&T 
  702      941       1943       UUNET Technologies, Inc. 
 7046      863       1024       UUNET Technologies, Inc. 
    1      849       8541       BBN Planet 
 1239      733       3242       Sprint 
  209      576       2238       Qwest 
 3967      542        461       Exodus Communication 
  690      507         74       Merit Network 
 2914      470       2265       Verio, Inc. 
 4293      450        113       Cable & Wireless USA 
 3301      435        950       TeliaNet Sweden
 2149      410        329       Performance Systems, Inc. 
 2764      408        359       connect.com.au pty ltd
 3561      403       2350       Cable & Wireless USA 
 4323      402        372       Time Warner Communications, I
 3549      387        843       Global Crossing 
  703      377        361       UUNET Technologies, Inc. 

List of Unregistered ASNs (Global)
----------------------------------

Bad AS  Designation  Network              Transit AS  Description
 6971   UNALLOCATED   64.42.0.0/18          2516       Kokusai Denshin Denw
 6971   UNALLOCATED   64.42.0.0/17          2516       Kokusai Denshin Denw
 6971   UNALLOCATED   64.42.16.0/20         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.32.0/21         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.40.0/21         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.48.0/21         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.56.0/22         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.60.0/22         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.64.0/21         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.72.0/21         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.80.0/21         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.104.0/22        2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.108.0/22        2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.112.0/20        2914       Verio, Inc. 
 6971   UNALLOCATED   64.87.64.0/19         2516       Kokusai Denshin Denw
22141   UNALLOCATED   65.208.26.0/23         701       UUNET Technologies, 
 2027   UNALLOCATED   150.185.128.0/18      8143       Publicom Corp. 
 6971   UNALLOCATED   192.103.229.0/24      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   192.103.230.0/23      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   192.103.232.0/22      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   192.103.236.0/23      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   192.103.237.0/24      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   199.249.223.0/24      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   206.58.248.0/22       2516       Kokusai Denshin Denw
 6971   UNALLOCATED   206.58.248.0/21       2516       Kokusai Denshin Denw
 6971   UNALLOCATED   206.58.252.0/23       2914       Verio, Inc. 
 6971   UNALLOCATED   206.58.254.0/23       2914       Verio, Inc. 
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 
 6971   UNALLOCATED   216.105.192.0/20      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.121.224.0/19      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.192.0/21      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.192.0/18      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.200.0/23      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.200.0/21      2914       Verio, Inc. 
 6971   UNALLOCATED   216.174.208.0/20      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.232.0/21      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.128.0/18      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.210.128.0/17      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.210.140.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.160.0/21      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.176.0/21      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.184.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.200.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.216.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.220.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.224.0/21      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.232.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.236.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.240.0/20      2914       Verio, Inc. 
 6971   UNALLOCATED   216.229.96.0/20       2516       Kokusai Denshin Denw

Advertised Unregistered Addresses
---------------------------------

Network            Origin AS  Description
39.0.0.0/8            4554     Exchange Point Blocks 
128.65.0.0/16         3463     ACES Research Inc 
132.0.0.0/10           568     DISO-UNRRA 
134.137.0.0/16         400     Headquarters Standard Systems
135.0.0.0/13         10455     Lucent Technologies 
137.0.0.0/13           568     DISO-UNRRA 
138.94.0.0/16            1     BBN Planet 
144.7.0.0/16           701     UUNET Technologies, Inc. 
153.34.0.0/15          701     UUNET Technologies, Inc. 
153.36.0.0/14          701     UUNET Technologies, Inc. 
154.150.0.0/16        6494     IDCI 
158.0.0.0/13           568     DISO-UNRRA 
164.233.0.0/16        6020     DISA NETWORK SERVICES 
164.235.0.0/16        6025     US DOD NIC Unregistered
201.115.100.0/24      7018     AT&T 

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:18       /9:5       /10:7       /11:12      /12:34      
/13:89      /14:227     /15:392     /16:7025    /17:1311    /18:2434    
/19:7064    /20:6020    /21:4830    /22:7179    /23:9217    /24:61749   
/25:346     /26:348     /27:294     /28:312     /29:162     /30:203     
/31:1       /32:191     

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

  ASN   No of nets  Total ann.   Description
  701     1459          2279      UUNET Technologies, Inc. 
 1221     1429          1574      Telstra Pty Ltd
 3908      891          1175      Supernet, Inc. 
 7046      685           863      UUNET Technologies, Inc. 
  702      639           941      UUNET Technologies, Inc. 
 7018      567          1077      AT&T 
  690      504           507      Merit Network 
 4293      435           450      Cable & Wireless USA 
    1      410           849      BBN Planet 
  209      409           576      Qwest 
 1239      407           733      Sprint 
 3967      369           542      Exodus Communication 
 2764      363           408      connect.com.au pty ltd
 4323      339           402      Time Warner Communications, I
 5102      322           335      Ameritech Advanced Data Servi
  703      309           377      UUNET Technologies, Inc. 
  705      299           352      UUNET Technologies, Inc. 
11371      297           308      Rhythms NetConnections 
 4151      294           337      USDA 
 2149      286           410      Performance Systems, Inc. 

Number of /24s announced per /8 block (Global)
----------------------------------------------

   4:5         9:1        12:431      13:10       15:1        17:5      
  20:1        24:818      25:1        26:1        32:75       38:13     
  43:2        44:2        47:2        52:1        53:2        57:13     
  61:106      62:155      63:1956     64:1355     65:876      66:505    
  67:3        80:73      128:52      129:108     130:26      131:47     
 132:13      133:2       134:132     135:8       136:106     137:108    
 138:194     139:51      140:201     141:56      142:62      143:39     
 144:145     145:13      146:229     147:129     148:219     149:88     
 150:44      151:190     152:383     153:51      154:22      155:84     
 156:85      157:111     158:73      159:70      160:46      161:60     
 162:70      163:161     164:117     165:127     166:208     167:157    
 168:122     169:40      170:287     171:2       192:5432    193:2007   
 194:2096    195:838     196:460     198:3793    199:3520    200:2458   
 201:1       202:2822    203:4555    204:3384    205:2206    206:2864   
 207:2619    208:3039    209:3114    210:592     211:150     212:893    
 213:527     214:9       215:16      216:2989    217:412     218:2      


End of report



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