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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   20 Jul, 2001

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

BGP routing table entries examined:                            104573
Origin ASes present in the Internet Routing Table:              11312
Origin ASes announcing only one prefix:                          4160
Transit ASes present in the Internet Routing Table:              1514
Average AS path length visible in the Internet Routing Table:     5.3
    Max AS path length visible:                                    15
Illegal AS announcements present in the Routing Table:             19
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:                 1240384498
    Equivalent to 73 /8s, 238 /16s and 195 /24s
    Percentage of available address space announced:             33.5
    Percentage of allocated address space announced:             65.0
    Percentage of available address space allocated:             51.5
Total number of prefixes smaller than registry allocations:     71049

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

Prefixes being announced by APNIC Region ASes:                  15502
Prefixes being announced from the APNIC address blocks:         13946
APNIC Region origin ASes present in the Internet Routing Table:  1329
APNIC Region origin ASes announcing only one prefix:              463
APNIC Region transit ASes present in the Internet Routing Table:  223
Average APNIC Region AS path length visible:                      5.1
    Max APNIC Region AS path length visible:                       14
Number of APNIC addresses announced to Internet:             74027962
    Equivalent to 4 /8s, 105 /16s and 147 /24s
    Percentage of available APNIC address space announced:       72.8

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:                   71715
Prefixes being announced from the ARIN address blocks:          51695
ARIN Region origin ASes present in the Internet Routing Table:   6798
ARIN Region origin ASes announcing only one prefix:              2013
ARIN Region transit ASes present in the Internet Routing Table:   710
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        13
Number of ARIN addresses announced to Internet:             201112880
    Equivalent to 11 /8s, 252 /16s and 189 /24s
    Percentage of available ARIN address space announced:        79.9

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:                   17353
Prefixes being announced from the RIPE address blocks:          13448
RIPE Region origin ASes present in the Internet Routing Table:   3195
RIPE Region origin ASes announcing only one prefix:              1684
RIPE Region transit ASes present in the Internet Routing Table:   582
Average RIPE Region AS path length visible:                       5.8
    Max RIPE Region AS path length visible:                        15
Number of RIPE addresses announced to Internet:             101605394
    Equivalent to 6 /8s, 14 /16s and 96 /24s
    Percentage of available RIPE address space announced:        67.3

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       1346       Telstra
 2764      433        345       connect.com.au pty ltd
  703      401        383       UUNET Technologies, Inc.
 2907      367       1784       SINET Japan
 4755      283        158       VSNL India
 7474      242        292       Optus Communications
 4134      232       1610       Data Communications Bureau
 7539      207        165       TANet2, sponsored by NSC, TAI
 4766      176       1336       KORnet Powered BY Korea Telec
 7545      145         21       TPG Internet Pty Ltd
 9443      134         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
 4812      111        279       Shanghai Telecom Company
 4740      110         15       Ozemail
 4713      109        878       NTT-OCNET
 9583      108         60       Satyam Infoway Ltd.,

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

  ASN   No of nets  /20 equiv  Description
  702      679       1846       UUNET Technologies, Inc.
 3301      430        918       TeliaNet Sweden
15870      417         12       Global Center Frankfurt
 1257      280        504       Swipnet AB
 1270      245        868       UUNET Germany
  680      232       2069       Deutschef Forschurgsnetz
 3215      220        495       RAIN
15878      202          8       Global Center Paris
  719      187        291       LANLINK
  786      184       1890       JANET IP Service
 5515      174        654       Sonera Finland
 3320      170       1410       Deutsche Telekom AG
 8708      151         15       Romania Data System
 5400      139         66       Concert Internet Plus Europea
 3303      130        575       Swisscom
  517      124        272       Xlink
 2856      123        776       BTnet UK Regional network
 5549      117         66       Seicom Computer Gmb
 1267      107       1989       IUnet S.p.A
 8503      106          3       PCNET - PCNET DATA Network

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

  ASN   No of nets  /20 equiv  Description
  701     2318       8313       UUNET Technologies, Inc.
 7018      971       6988       AT&T
    1      906       8715       BBN Planet
 7046      744       1055       UUNET Technologies, Inc.
 1239      686       3295       Sprint ICM-Inria
  690      525         94       Merit Network
 2914      518       2317       Verio, Inc.
 4293      491         99       Cable & Wireless USA
  209      473       1883       Qwest
 3561      433       2450       Cable & Wireless USA
 3908      420        583       Supernet, Inc.
 2548      415       1012       Digital Express Group, Inc.
 2149      414        377       Performance Systems, Inc.
18994      397         10       Global Crossing 
 4323      361        300       Time Warner Communications, I
 3549      351        809       Global Crossing
11371      337        100       Rhythms NetConnections
 3967      331        450       Exodus Communication
15290      321        340       AT&T Canada IES 
 6347      315        353       SAVVIS Communications Corpora

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

  ASN   No of nets  /20 equiv  Description
  701     2318       8313       UUNET Technologies, Inc.
 1221     1673       1346       Telstra
 7018      971       6988       AT&T
    1      906       8715       BBN Planet
 7046      744       1055       UUNET Technologies, Inc.
 1239      686       3295       Sprint ICM-Inria
  702      679       1846       UUNET Technologies, Inc.
  690      525         94       Merit Network
 2914      518       2317       Verio, Inc.
 4293      491         99       Cable & Wireless USA
  209      473       1883       Qwest
 2764      433        345       connect.com.au pty ltd
 3561      433       2450       Cable & Wireless USA
 3301      430        918       TeliaNet Sweden
 3908      420        583       Supernet, Inc.
15870      417         12       Global Center Frankfurt
 2548      415       1012       Digital Express Group, Inc.
 2149      414        377       Performance Systems, Inc.
  703      401        383       UUNET Technologies, Inc.
18994      397         10       Global Crossing 

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

Bad AS  Designation  Network              Transit AS  Description
18541   UNALLOCATED   63.166.66.0/24        1239       Sprint ICM-Inria
18541   UNALLOCATED   63.169.205.0/24       1239       Sprint ICM-Inria
  578   UNALLOCATED   64.230.242.0/28        577       Bell Canada
  578   UNALLOCATED   64.230.242.16/28       577       Bell Canada
65501   PRIVATE       64.243.116.0/24      16890       K&G Network Services
 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
19062   UNALLOCATED   192.197.96.0/20       1691       BCTEL Advanced Commu
65460   PRIVATE       192.231.11.0/24       7018       AT&T
 5757   UNALLOCATED   192.239.13.0/24        701       UUNET Technologies, 
17657   UNALLOCATED   202.161.160.0/20      9653       AGNS HongKong NET
 4831   UNALLOCATED   202.172.32.0/20       9740       Cable & Wireless Net
19551   UNALLOCATED   204.229.224.0/22      6226       US West Communicatio
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 
19322   UNALLOCATED   208.44.17.0/24         209       Qwest
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       /11:8       /12:32      
/13:82      /14:215     /15:353     /16:6914    /17:1177    /18:2244    
/19:6753    /20:5408    /21:4515    /22:6806    /23:8631    /24:59130   
/25:289     /26:361     /27:429     /28:431     /29:355     /30:336     
/31:1       /32:72      

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

  ASN   No of nets  Total ann.   Description
 1221     1518          1673      Telstra
  701     1454          2318      UUNET Technologies, Inc.
 7046      577           744      UUNET Technologies, Inc.
  690      521           525      Merit Network
 7018      490           971      AT&T
 4293      475           491      Cable & Wireless USA
  702      428           679      UUNET Technologies, Inc.
    1      426           906      BBN Planet
15870      413           417      Global Center Frankfurt
18994      395           397      Global Crossing 
 2764      389           433      connect.com.au pty ltd
 1239      369           686      Sprint ICM-Inria
  209      351           473      Qwest
  703      331           401      UUNET Technologies, Inc.
11371      324           337      Rhythms NetConnections
 3908      319           420      Supernet, Inc.
 4323      314           361      Time Warner Communications, I
18993      308           312      Global Crossing 
 2548      304           415      Digital Express Group, Inc.
 8013      278           308      PSINet Ltd. Canada

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

   4:1         9:6        12:579      13:13       15:11       17:11     
  20:7        24:846      26:1        32:42       35:4        38:30     
  40:2        43:4        44:5        45:1        47:40       52:2      
  53:4        55:1        56:5        57:15       61:117      62:197    
  63:2512     64:2746     65:1001     66:758      80:47      128:61     
 129:188     130:54      131:67      132:41      133:1       134:231    
 135:11      136:36      137:178     138:233     139:86      140:257    
 141:225     142:113     143:98      144:198     145:32      146:199    
 147:180     148:239     149:124     150:63      151:261     152:984    
 153:40      154:21      155:144     156:92      157:156     158:113    
 159:82      160:85      161:146     162:160     163:237     164:167    
 165:250     166:260     167:158     168:215     169:54      170:446    
 171:20      172:1       192:32      193:2607    194:2750    195:1078   
 196:3       198:4       199:3881    200:2756    202:3739    203:5755   
 204:4372    205:2926    206:4110    207:3637    208:5200    209:4100   
 210:777     211:293     212:1124    213:697     216:4751    217:441    
 218:3      

End of report

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