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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   20:00 +10GMT Fri 24 Jan, 2003

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

BGP routing table entries examined:                            119940
    Prefixes after maximum aggregation:                         76698
    Unique aggregates announced to Internet:                    57761
Total ASes present in the Internet Routing Table:               14467
Origin-only ASes present in the Internet Routing Table:         12563
Origin ASes announcing only one prefix:                          5651
Transit ASes present in the Internet Routing Table:              1904
Transit-only ASes present in the Internet Routing Table:           63
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:             12
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    27
Number of addresses announced to Internet:                 1191268813
    Equivalent to 71 /8s, 1 /16s and 81 /24s
    Percentage of available address space announced:             32.1
    Percentage of allocated address space announced:             58.9
    Percentage of available address space allocated:             54.6
Total number of prefixes smaller than registry allocations:     55600

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

Prefixes being announced by APNIC Region ASes:                  20272
    Total APNIC prefixes after maximum aggregation:             11943
Prefixes being announced from the APNIC address blocks:         18766
    Unique aggregates announced from the APNIC address blocks:  11486
APNIC Region origin ASes present in the Internet Routing Table:  1716
APNIC Region origin ASes announcing only one prefix:              521
APNIC Region transit ASes present in the Internet Routing Table:  289
Average APNIC Region AS path length visible:                      5.3
    Max APNIC Region AS path length visible:                       12
Number of APNIC addresses announced to Internet:            104757920
    Equivalent to 6 /8s, 62 /16s and 122 /24s
    Percentage of available APNIC address space announced:       68.9

APNIC AS Blocks        4608 - 4864, 7467 - 7722, 9216 - 10239
                       17408 - 18431, 23552 - 24575
APNIC Address Blocks   61/8, 202/7, 210/7, 218/7 and 220/7

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

Prefixes being announced by ARIN Region ASes:                   73977
    Total ARIN prefixes after maximum aggregation:              47237
Prefixes being announced from the ARIN address blocks:          52209
    Unique aggregates announced from the ARIN address blocks:   16139
ARIN Region origin ASes present in the Internet Routing Table:   8073
ARIN Region origin ASes announcing only one prefix:              2707
ARIN Region transit ASes present in the Internet Routing Table:   760
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        17
Number of ARIN addresses announced to Internet:             185415616
    Equivalent to 11 /8s, 13 /16s and 55 /24s
    Percentage of available ARIN address space announced:        69.1

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 - 23551
                       25600 - 26591, 26624 - 27647
ARIN Address Blocks    24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
                       and 216/8

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

Prefixes being announced by RIPE Region ASes:                   20573
    Total RIPE prefixes after maximum aggregation:              15307
Prefixes being announced from the RIPE address blocks:          17170
    Unique aggregates announced from the RIPE address blocks:   11522
RIPE Region origin ASes present in the Internet Routing Table:   4293
RIPE Region origin ASes announcing only one prefix:              2340
RIPE Region transit ASes present in the Internet Routing Table:   775
Average RIPE Region AS path length visible:                       5.7
    Max RIPE Region AS path length visible:                        14
Number of RIPE addresses announced to Internet:             122589508
    Equivalent to 7 /8s, 78 /16s and 145 /24s
    Percentage of available RIPE address space announced:        81.2

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, 24576 - 25599, 28672 - 29695
RIPE Address Blocks    62/8, 80/7, 82/8, 193/8, 194/7, 212/7 and 217/8

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                  5108
    Total LACNIC prefixes after maximum aggregation:             2211
Prefixes being announced from the LACNIC address blocks:         4464
    Unique aggregates announced from the LACNIC address blocks:  2936
LACNIC Region origin ASes present in the Internet Routing Table:  324
LACNIC Region origin ASes announcing only one prefix:              83
LACNIC Region transit ASes present in the Internet Routing Table:  69
Average LACNIC Region AS path length visible:                     5.7
    Max LACNIC Region AS path length visible:                      10
Number of LACNIC addresses announced to Internet:            11842304
    Equivalent to 0 /8s, 180 /16s and 179 /24s
    Percentage of available LACNIC address space announced:      70.6

LACNIC AS Blocks       26592 - 26623, 27648 - 28671
LACNIC Address Blocks  200/8

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 1221     1130       1185         832   Telstra Pty Ltd
  703      404        368         316   UUNET
 2907      392       1976         368   SINET Japan
 2764      336        340         305   connect.com.au pty ltd
17557      329         24         129   Pakistan Telecom
 4134      298       2505          97   Data Communications Bureau
 7474      298        276         206   Optus Communications Pty Ltd
 4814      261         79          15   China Telecom (Group)
 4755      247        134          75   Videsh Sanchar Nigam Ltd. Aut
 3786      237        772         204   DACOM Corporation
17676      229       3557          28   XTAGE CORPORATION
 9583      204         33          12   Satyam Infoway Ltd.,
 4766      197       2074         146   Korea Internet Exchange for "
 9443      182         57          77   Primus Telecommunications
 9800      167        205          41   CHINA UNICOM
 4765      147          9          13   World Net & Services Co., Ltd
 4716      129        737         123   TTnet
 7713      129         46          15   PT TELEKOMUNIKASI INDONESIA
 9768      129        384          64   Korea Telecom
 9238      126          7          17   TATA ISP

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1613       9031        1188   UUNET Technologies, Inc. 
 7018     1438       7092         967   AT&T 
 3908     1198       1620         509   Supernet, Inc. 
 1239      965       3158         678   Sprint 
  852      680       1124         445   Telus Advanced Communications
    1      660       8076         432   GENUITY 
 7843      593        399         225   Adelphia Corp. 
 7046      556        825         257   UUNET Technologies, Inc. 
 4323      527        472         167   Time Warner Communications, I
  209      522       2103         331   Qwest 
  690      521         76         326   Merit Network 
 7066      492        204         253   Virginia Polytechnic Institut
 6197      468        560         106   BellSouth Network Solutions, 
18566      443        112           5   Covad Communications 
  705      431        133         187   UUNET Technologies, Inc. 
 2386      425        467         230   AT&T Data Communications Serv
 6198      421        185         198   BellSouth Network Solutions, 
 4355      408        313         116   EarthLink, Inc. 
 3549      397        709         295   Global Crossing 
15290      393        215         176   AT&T Canada IES 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      809       2306         672   UUNET - Commercial IP service
 3215      313        803         174   France Telecom Transpac
 3301      313       1141         299   TeliaNet Sweden
 3320      255       1995         228   Deutsche Telekom AG
  680      240       2166         237   DFN-IP service G-WiN
 5515      214        783         175   Sonera Solution Autonomous Sy
 1257      207        400         196   SWIPnet Swedish IP Network
  786      177       1873         177   The JANET IP Service
  719      170        306         130   LANLINK autonomous system
 5400      160         70          97   BT Ignite European Backbone
 8708      157         42         147   Romania Data Systems S.A.
20858      145         17           3   This AS will be used to conne
 3303      144        517         143   Swisscom Ltd
 2856      130       1302         117   BTnet UK Regional network
 8220      123        174         114   COLT Internet - International
12302      123         18          30   MobiFon S.A.
 3246      119        378         116   Song Networks
 3269      113        754          63   TELECOM ITALIA
 5511      106        193          83   France Telecom
 3233      104         10           8   RNC - Romanian Natioanal R&D 

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      317         98         105   ImpSat
 7303      227         36          52   Telecom Argentina Stet-France
 8151      207        317         113   UniNet S.A. de C.V. 
 6503      158        207         108   AVANTEL, S.A. 
11172      158         81          32   Servicios Alestra S.A de C.V 
16814      140          9          14   NSS, S.A. 
13999      113         32          33   Mega Cable S.A. de C.V. 
10620      102          6          31   TVCABLE BOGOTA 
11340       90          2          36   Red Universitaria Nacional 
 6147       78         58          20   Telefonica Del Peru 
 1916       74        306          44   Fundacao de Amparo a Pesquisa
15311       73         27          38   Telefonica Empresas 
 6535       70          4          21   Chilesat Servicios  Empresari
 4270       68         18          10   Red de Interconexion Universi
11992       68          7          32   Integrated Systems 
 8065       67          6          14   Empresas Publicas de Medellin
 7984       61         11          39   Global One Colombia 
11830       60          4          21   Instituto Costarricense de El
15034       59          5          31   TIBA SA 
 4926       57          4          47   Telintar S.A. 

Global Per AS Maximum Aggr summary
----------------------------------

  ASN   No of nets  Net Savings Description
 3908      1198         689      Supernet, Inc. 
 7018      1438         471      AT&T 
18566       443         438      Covad Communications 
 7843       593         368      Adelphia Corp. 
 6197       468         362      BellSouth Network Solutions, 
 4323       527         360      Time Warner Communications, I
 7046       556         299      UUNET Technologies, Inc. 
 1221      1130         298      Telstra Pty Ltd
11492       299         298      Cable One 
 6347       373         294      SAVVIS Communications Corpora
 4355       408         292      EarthLink, Inc. 
 1239       965         287      Sprint 
 4151       329         271      USDA 
22927       289         267      TELEFONICA DE ARGENTINA 
 4814       261         246      China Telecom (Group)
  705       431         244      UUNET Technologies, Inc. 
  376       345         241      Reseau Interordinateurs Scien
 7066       492         239      Virginia Polytechnic Institut
  852       680         235      Telus Advanced Communications
    1       660         228      GENUITY 

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

Bad AS  Designation  Network              Transit AS  Description
 1877   UNALLOCATED   192.108.199.0/24      1880       Stupi, house man's p
64521   PRIVATE       198.189.23.0/24       2151       California State Uni
64521   PRIVATE       198.189.24.0/24       2151       California State Uni
64524   PRIVATE       198.189.134.0/24      2151       California State Uni
64524   PRIVATE       198.189.135.0/24      2151       California State Uni
64524   PRIVATE       198.189.136.0/24      2151       California State Uni
64524   PRIVATE       198.189.137.0/24      2151       California State Uni
64524   PRIVATE       198.189.138.0/24      2151       California State Uni
64521   PRIVATE       198.189.158.0/24      2151       California State Uni
64521   PRIVATE       198.189.235.0/24      2151       California State Uni
64521   PRIVATE       198.189.236.0/24      2151       California State Uni
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 

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

Network            Origin AS  Description
39.0.0.0/8            4554     Exchange Point Blocks 
132.0.0.0/10           568     DISO-UNRRA 
135.0.0.0/13         10455     Lucent Technologies 
137.0.0.0/13           568     DISO-UNRRA 
158.0.0.0/13           568     DISO-UNRRA 
178.54.59.0/24        7018     AT&T 
188.1.0.0/16           680     DFN-IP service G-WiN
192.31.242.0/24        771     NASA Ames Research Center 
192.44.0.0/19          702     UUNET - Commercial IP service
192.72.0.0/18         4780     Digital United Inc.
192.72.0.0/16         4780     Digital United Inc.
192.83.16.0/20        5515     Sonera Solution Autonomous Sy
192.83.32.0/19        5515     Sonera Solution Autonomous Sy
192.83.96.0/22        5515     Sonera Solution Autonomous Sy
192.83.100.0/24       5515     Sonera Solution Autonomous Sy
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T 
192.136.79.0/24        719     LANLINK autonomous system
192.136.86.0/24        719     LANLINK autonomous system
192.136.87.0/24        719     LANLINK autonomous system
192.136.88.0/24        719     LANLINK autonomous system
192.139.62.0/24       6539     GT Group Telecom Services Cor
192.140.0.0/16        5511     France Telecom
192.153.136.0/21       568     DISO-UNRRA 
192.156.164.0/24     19548     Adelphia Business Solutions 
192.172.0.0/19         568     DISO-UNRRA 
192.243.36.0/23       2044     AUSNet, Inc. 

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

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:17       /9:3       /10:8       /11:12      /12:44      
/13:91      /14:240     /15:441     /16:7333    /17:1563    /18:2839    
/19:8046    /20:7874    /21:5664    /22:8589    /23:10273   /24:66212   
/25:140     /26:173     /27:94      /28:78      /29:64      /30:98      
/31:0       /32:44      

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

  ASN   No of nets  Total ann.   Description
 3908      774          1198      Supernet, Inc. 
 7018      521          1438      AT&T 
  702      497           809      UUNET - Commercial IP service
  690      470           521      Merit Network 
18566      438           443      Covad Communications 
  701      424          1613      UUNET Technologies, Inc. 
 7066      391           492      Virginia Polytechnic Institut
 7843      364           593      Adelphia Corp. 
 1239      354           965      Sprint 
 6197      344           468      BellSouth Network Solutions, 
 6198      335           421      BellSouth Network Solutions, 
 6140      305           317      ImpSat
11492      298           299      Cable One 
22927      288           289      TELEFONICA DE ARGENTINA 
 7046      253           556      UUNET Technologies, Inc. 
 3215      240           313      France Telecom Transpac
20115      230           351      Charter Communications 
 2386      228           425      AT&T Data Communications Serv
 4355      227           408      EarthLink, Inc. 
 7303      226           227      Telecom Argentina Stet-France

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

  12:637      13:1        15:6        17:3        20:7        24:790    
  25:1        32:82       34:1        38:39       40:19       44:1      
  55:1        57:16       61:470      62:481      63:1895     64:1364   
  65:1823     66:1397     67:203      68:230      69:37       80:322    
  81:82      128:124     129:188     130:22      131:73      132:11     
 133:4       134:144     135:7       136:204     137:113     138:205    
 139:60      140:123     141:103     142:96      143:44      144:153    
 145:16      146:255     147:123     148:265     149:77      150:42     
 151:94      152:259     153:41      154:7       155:105     156:50     
 157:62      158:119     159:136     160:29      161:57      162:133    
 163:81      164:276     165:136     166:85      167:303     168:398    
 169:57      170:291     171:8       178:1       192:5361    193:2401   
 194:1969    195:906     196:454     198:3589    199:3033    200:2781   
 202:3659    203:5041    204:3026    205:2126    206:2357    207:2432   
 208:2670    209:2723    210:700     211:328     212:936     213:705    
 214:15      215:23      216:3199    217:559     218:71      219:16     
 220:44     

End of report

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