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Weekly Routing Table Report



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   13 Jul, 2001

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

BGP routing table entries examined:                            105113
Origin ASes present in the Internet Routing Table:              11289
Origin ASes announcing only one prefix:                          4140
Transit ASes present in the Internet Routing Table:              1507
Average AS path length visible in the Internet Routing Table:     5.3
    Max AS path length visible:                                    16
Illegal AS announcements present in the Routing Table:             22
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    16
Number of addresses announced to Internet:                 1241668606
    Equivalent to 74 /8s, 2 /16s and 91 /24s
    Percentage of available address space announced:             33.5
    Percentage of allocated address space announced:             65.1
    Percentage of available address space allocated:             51.5
Total number of prefixes smaller than registry allocations:     71526

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

Prefixes being announced by APNIC Region ASes:                  15479
Prefixes being announced from the APNIC address blocks:         13968
APNIC Region origin ASes present in the Internet Routing Table:  1321
APNIC Region origin ASes announcing only one prefix:              467
APNIC Region transit ASes present in the Internet Routing Table:  221
Average APNIC Region AS path length visible:                      5.1
    Max APNIC Region AS path length visible:                       16
Number of APNIC addresses announced to Internet:             72982886
    Equivalent to 4 /8s, 89 /16s and 161 /24s
    Percentage of available APNIC address space announced:       71.8

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

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

Prefixes being announced by ARIN Region ASes:                   71856
Prefixes being announced from the ARIN address blocks:          51537
ARIN Region origin ASes present in the Internet Routing Table:   6806
ARIN Region origin ASes announcing only one prefix:              2015
ARIN Region transit ASes present in the Internet Routing Table:   711
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        13
Number of ARIN addresses announced to Internet:             201497460
    Equivalent to 12 /8s, 2 /16s and 155 /24s
    Percentage of available ARIN address space announced:        80.1

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 - 22527
ARIN Address Blocks    24/8, 63/8, 64/6, 199/8, 200/8, 204/6,
                       208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                   17765
Prefixes being announced from the RIPE address blocks:          13726
RIPE Region origin ASes present in the Internet Routing Table:   3166
RIPE Region origin ASes announcing only one prefix:              1658
RIPE Region transit ASes present in the Internet Routing Table:   575
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        15
Number of RIPE addresses announced to Internet:             101358224
    Equivalent to 6 /8s, 10 /16s and 154 /24s
    Percentage of available RIPE address space announced:        67.1

RIPE AS Blocks         1877 - 1901, 2042, 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     1673       1330       Telstra
 2764      426        345       connect.com.au pty ltd
  703      403        383       UUNET Technologies, Inc.
 2907      367       1783       SINET Japan
 4755      292        162       VSNL India
 7474      242        293       Optus Communications
 4134      233       1609       Data Communications Bureau
 7539      208        181       TANet2, sponsored by NSC, TAI
 4766      176       1242       KORnet Powered BY Korea Telec
 7545      146         21       TPG Internet Pty Ltd
 9443      136         38       INTERNETPRIMUS-AS-A
 4786      130         17       NetConnect Communications Pty
 4763      118         69       Telstra New Zealand
17561      115        151       Internet service provision to
 7657      113         22       The Internet Group Limited
 7586      112         17       Paradox Digital Pty. Ltd
 9583      110         60       Satyam Infoway Ltd.,
 4740      109         15       Ozemail
 4713      107        869       NTT-OCNET
 4812      106        259       Shanghai Telecom Company

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

  ASN   No of nets  /20 equiv  Description
  702      677       1849       UUNET Technologies, Inc.
 3301      429        918       TeliaNet Sweden
15870      426         12       Global Center Frankfurt
  719      413        337       LANLINK
 1257      278        504       Swipnet AB
 1270      249        868       UUNET Germany
  680      232       2069       Deutschef Forschurgsnetz
 3215      219        495       RAIN
15878      210          8       Global Center Paris
  786      184       1890       JANET IP Service
 3246      182        170       Clinet
 5515      179        654       Sonera Finland
 3320      169       1410       Deutsche Telekom AG
 8708      148         15       Romania Data System
 5400      140         68       Concert Internet Plus Europea
 3303      130        575       Swisscom
  517      125        272       Xlink
 2856      123        776       BTnet UK Regional network
 5549      118         66       Seicom Computer Gmb
 1267      106       1986       IUnet S.p.A

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

  ASN   No of nets  /20 equiv  Description
  701     2313       8151       UUNET Technologies, Inc.
 7018      963       7050       AT&T
    1      902       8714       BBN Planet
 7046      753       1092       UUNET Technologies, Inc.
 1239      674       3322       Sprint ICM-Inria
  690      554         97       Merit Network
 2914      517       2317       Verio, Inc.
  209      494       1876       Qwest
 4293      494         99       Cable & Wireless USA
 3561      431       2448       Cable & Wireless USA
 2149      416        377       Performance Systems, Inc.
 3908      416        583       Supernet, Inc.
 2548      414        996       Digital Express Group, Inc.
18994      408         10       Global Crossing 
 3549      349        813       Global Crossing
11371      337        100       Rhythms NetConnections
 4323      333        298       Time Warner Communications, I
 3967      330        448       Exodus Communication
15290      323        342       AT&T Canada IES 
18993      314          8       Global Crossing 

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

  ASN   No of nets  /20 equiv  Description
  701     2313       8151       UUNET Technologies, Inc.
 1221     1673       1330       Telstra
 7018      963       7050       AT&T
    1      902       8714       BBN Planet
 7046      753       1092       UUNET Technologies, Inc.
  702      677       1849       UUNET Technologies, Inc.
 1239      674       3322       Sprint ICM-Inria
  690      554         97       Merit Network
 2914      517       2317       Verio, Inc.
  209      494       1876       Qwest
 4293      494         99       Cable & Wireless USA
 3561      431       2448       Cable & Wireless USA
 3301      429        918       TeliaNet Sweden
 2764      426        345       connect.com.au pty ltd
15870      426         12       Global Center Frankfurt
 2149      416        377       Performance Systems, Inc.
 3908      416        583       Supernet, Inc.
 2548      414        996       Digital Express Group, Inc.
  719      413        337       LANLINK
18994      408         10       Global Crossing 

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

Bad AS  Designation  Network              Transit AS  Description
  578   UNALLOCATED   64.230.242.0/28        577       Bell Canada
  578   UNALLOCATED   64.230.242.16/28       577       Bell Canada
 2027   UNALLOCATED   150.185.128.0/18      8143       Publicom Corp.
 1877   UNALLOCATED   192.108.196.0/24      1800       SPRINT
 1877   UNALLOCATED   192.108.209.0/24      1880       Stupi, house man's 
 1877   UNALLOCATED   192.108.210.0/24      1880       Stupi, house man's 
 1877   UNALLOCATED   192.108.214.0/24      1800       SPRINT
 5757   UNALLOCATED   192.239.13.0/24        701       UUNET Technologies, 
65000   PRIVATE       194.100.160.0/24      3246       Clinet
65000   PRIVATE       194.100.161.0/24      3246       Clinet
65000   PRIVATE       194.100.162.0/24      3246       Clinet
65000   PRIVATE       194.100.163.0/24      3246       Clinet
65000   PRIVATE       194.100.164.0/24      3246       Clinet
65000   PRIVATE       194.100.165.0/24      3246       Clinet
65000   PRIVATE       194.100.166.0/24      3246       Clinet
65000   PRIVATE       194.100.167.0/24      3246       Clinet
65000   PRIVATE       194.100.168.0/24      3246       Clinet
65000   PRIVATE       194.100.169.0/24      3246       Clinet
65000   PRIVATE       194.100.170.0/24      3246       Clinet
65000   PRIVATE       194.100.201.0/24      3246       Clinet
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 
65515   PRIVATE       212.110.142.0/24      5593       CRIS-AS

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

Network            Origin AS  Description
99.0.0.0/8            9638     National Agricultural Coopera
128.65.0.0/16         3463     ACES Research Inc
132.0.0.0/10           568     DISO-UNRRA
134.137.0.0/16        7170     AT&T Government Markets
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     US DOD NIC Unregistered
172.32.1.0/25         1221     Telstra
172.122.0.0/16         701     UUNET Technologies, Inc.
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        /8:20       /9:5       /10:6       /11:9       /12:33      
/13:80      /14:211     /15:354     /16:6913    /17:1190    /18:2231    
/19:6742    /20:5376    /21:4511    /22:6849    /23:8673    /24:59597   
/25:293     /26:364     /27:436     /28:449     /29:364     /30:338     
/31:1       /32:68      

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

  ASN   No of nets  Total ann.   Description
 1221     1518          1673      Telstra
  701     1452          2313      UUNET Technologies, Inc.
 7046      586           753      UUNET Technologies, Inc.
  690      550           554      Merit Network
 4293      478           494      Cable & Wireless USA
 7018      474           963      AT&T
  702      427           677      UUNET Technologies, Inc.
    1      424           902      BBN Planet
15870      422           426      Global Center Frankfurt
18994      406           408      Global Crossing 
 2764      382           426      connect.com.au pty ltd
  209      370           494      Qwest
 1239      358           674      Sprint ICM-Inria
  703      332           403      UUNET Technologies, Inc.
11371      324           337      Rhythms NetConnections
 3908      314           416      Supernet, Inc.
18993      310           314      Global Crossing 
 2548      304           414      Digital Express Group, Inc.
 4323      286           333      Time Warner Communications, I
 8013      278           308      PSINet Ltd. Canada

Advertised prefixes smaller than registry allocations (per /8 block)
--------------------------------------------------------------------

   4:1         6:12        9:6        12:575      13:13       15:11     
  17:13       20:6        24:947      26:1        32:37       38:224    
  40:2        43:4        44:11       45:1        47:40       52:2      
  53:4        55:1        56:5        57:15       61:118      62:197    
  63:2506     64:2730     65:987      66:741      80:39      128:61     
 129:197     130:54      131:66      132:40      133:1       134:234    
 135:12      136:36      137:212     138:234     139:87      140:254    
 141:226     142:122     143:98      144:200     145:29      146:193    
 147:180     148:236     149:136     150:63      151:264     152:1079   
 153:38      154:24      155:146     156:92      157:156     158:113    
 159:80      160:85      161:146     162:161     163:193     164:170    
 165:248     166:257     167:156     168:204     169:54      170:436    
 171:20      172:1       192:32      193:2755    194:2799    195:1105   
 196:3       198:6       199:3875    200:2705    202:3761    203:5773   
 204:4316    205:2903    206:4093    207:3638    208:5201    209:4101   
 210:772     211:295     212:1175    213:719     216:4716    217:450    
 218:3      

End of report

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