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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 04 Apr, 2003

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

BGP routing table entries examined:                            123590
    Prefixes after maximum aggregation:                         78340
    Unique aggregates announced to Internet:                    58939
Total ASes present in the Internet Routing Table:               14931
Origin-only ASes present in the Internet Routing Table:         12943
Origin ASes announcing only one prefix:                          5863
Transit ASes present in the Internet Routing Table:              1988
Transit-only ASes present in the Internet Routing Table:           72
Average AS path length visible in the Internet Routing Table:     4.7
    Max AS path length visible:                                   255
Illegal AS announcements present in the Routing Table:              5
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from unallocated address space:           22
Number of addresses announced to Internet:                 1222409184
    Equivalent to 72 /8s, 220 /16s and 123 /24s
    Percentage of available address space announced:             33.0
    Percentage of allocated address space announced:             59.9
    Percentage of available address space allocated:             55.0
Total number of prefixes smaller than registry allocations:     58485

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

Prefixes being announced by APNIC Region ASes:                  20488
    Total APNIC prefixes after maximum aggregation:             12277
Prefixes being announced from the APNIC address blocks:         18943
    Unique aggregates announced from the APNIC address blocks:  11702
APNIC Region origin ASes present in the Internet Routing Table:  1762
APNIC Region origin ASes announcing only one prefix:              522
APNIC Region transit ASes present in the Internet Routing Table:  285
Average APNIC Region AS path length visible:                      4.8
    Max APNIC Region AS path length visible:                       15
Number of APNIC addresses announced to Internet:            108879360
    Equivalent to 6 /8s, 125 /16s and 94 /24s
    Percentage of available APNIC address space announced:       64.5

APNIC AS Blocks        4608 - 4864, 7467 - 7722, 9216 - 10239
                       17408 - 18431, 23552 - 24575
APNIC Address Blocks   61/8, 202/7, 210/7, 218/7, 220/7 and 222/8

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

Prefixes being announced by ARIN Region ASes:                   76495
    Total ARIN prefixes after maximum aggregation:              48164
Prefixes being announced from the ARIN address blocks:          54710
    Unique aggregates announced from the ARIN address blocks:   16696
ARIN Region origin ASes present in the Internet Routing Table:   8289
ARIN Region origin ASes announcing only one prefix:              2804
ARIN Region transit ASes present in the Internet Routing Table:   795
Average ARIN Region AS path length visible:                       4.5
    Max ARIN Region AS path length visible:                        17
Number of ARIN addresses announced to Internet:             190081984
    Equivalent to 11 /8s, 84 /16s and 107 /24s
    Percentage of available ARIN address space announced:        70.8

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, 29695 - 30719
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:                   21353
    Total RIPE prefixes after maximum aggregation:              15689
Prefixes being announced from the RIPE address blocks:          17870
    Unique aggregates announced from the RIPE address blocks:   11931
RIPE Region origin ASes present in the Internet Routing Table:   4480
RIPE Region origin ASes announcing only one prefix:              2452
RIPE Region transit ASes present in the Internet Routing Table:   811
Average RIPE Region AS path length visible:                       5.3
    Max RIPE Region AS path length visible:                        17
Number of RIPE addresses announced to Internet:             128463104
    Equivalent to 7 /8s, 168 /16s and 49 /24s
    Percentage of available RIPE address space announced:        76.6

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, 188/8, 193/8, 194/7,
                       212/7 and 217/8

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

Prefixes being announced by LACNIC Region ASes:                  5249
    Total LACNIC prefixes after maximum aggregation:             2210
Prefixes being announced from the LACNIC address blocks:         4645
    Unique aggregates announced from the LACNIC address blocks:  2939
LACNIC Region origin ASes present in the Internet Routing Table:  329
LACNIC Region origin ASes announcing only one prefix:              85
LACNIC Region transit ASes present in the Internet Routing Table:  67
Average LACNIC Region AS path length visible:                     5.1
    Max LACNIC Region AS path length visible:                      15
Number of LACNIC addresses announced to Internet:            12407040
    Equivalent to 0 /8s, 189 /16s and 81 /24s
    Percentage of available LACNIC address space announced:      74.0

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     1101       1105         804   Telstra Pty Ltd
  703      397        367         313   UUNET
 2907      381       1976         360   SINET Japan
 2764      318        340         286   connect.com.au pty ltd
 7474      271        276         207   Optus Communications Pty Ltd
 4814      269         79          15   China Telecom (Group)
 3786      245        775         212   DACOM Corporation
 4134      240       2051         127   Data Communications Bureau
17676      237       3654          25   XTAGE CORPORATION
 4755      230        135          75   Videsh Sanchar Nigam Ltd. Aut
17557      228         17         119   Pakistan Telecom
 9583      219         33          14   Satyam Infoway Ltd.,
 4766      211       2078         158   Korea Internet Exchange for "
 9443      179         58          78   Primus Telecommunications
 9800      174        226          48   CHINA UNICOM
 9238      134          8          21   TATA ISP
 4716      128        731         122   TTnet
 4739      128         57         117   Commerical Internet eXchange 
 9498      127          9          10   BHARTI BT INTERNET LTD.
 9768      125        384          64   Korea Telecom

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1581       8873        1117   UUNET Technologies, Inc. 
 7018     1352       7153         936   AT&T 
 3908      979       1571         475   Supernet, Inc. 
 1239      968       3139         684   Sprint 
    1      773       2845         490   GENUITY 
 7132      727       6084         408   Southwestern Bell Internet Se
  189      706        341         291   Genuity 
 7843      624        400         166   Adelphia Corp. 
 4151      612        691          58   USDA 
 3561      587       2353         338   Cable & Wireless USA 
 4323      566        491         178   Time Warner Communications, I
  852      550       1107         433   Telus Advanced Communications
18566      534        124           7   Covad Communications 
  209      529       2089         337   Qwest 
  690      502         73         318   Merit Network 
 2386      500        481         271   AT&T Data Communications Serv
 7066      485        204         255   Virginia Polytechnic Institut
 6197      475        338         196   BellSouth Network Solutions, 
  705      463        188         207   UUNET Technologies, Inc. 
 6198      458        226         178   BellSouth Network Solutions, 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      782       2221         649   UUNET - Commercial IP service
 3215      316        851         175   France Telecom Transpac
 3301      311       1174         301   TeliaNet Sweden
 3320      267       1996         230   Deutsche Telekom AG
  680      232       2053         229   DFN-IP service G-WiN
 1257      216        328         190   SWIPnet Swedish IP Network
  719      195        307         125   LANLINK autonomous system
 5515      195        779         168   Sonera Solution Autonomous Sy
 5400      194         93         108   BT Ignite European Backbone
  786      180       1874         180   The JANET IP Service
20858      155         17           3   This AS will be used to conne
 8708      154         42         150   Romania Data Systems S.A.
 3303      145        517         144   Swisscom Ltd
 8220      137        215         128   COLT Internet - International
12302      124         18          31   MobiFon S.A.
 2856      119       1298         109   BTnet UK Regional network
 3269      112        754          62   TELECOM ITALIA
 3246      110        384         107   Song Networks
 3233      107         11          12   RNC - Romanian Natioanal R&D 
 3352      105        734          32   Ibernet, Internet Access Netw

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      295         99         106   ImpSat
 7303      241         36          65   Telecom Argentina Stet-France
 8151      213        333         115   UniNet S.A. de C.V. 
11172      164         66          33   Servicios Alestra S.A de C.V 
 6503      156        207         109   AVANTEL, S.A. 
16814      139          9          18   NSS, S.A. 
11340      109          3          37   Red Universitaria Nacional 
10620      107          7          31   TVCABLE BOGOTA 
11992       90          9          36   Integrated Systems 
 6147       77         62          20   Telefonica Del Peru 
 6535       73          5          21   Chilesat Servicios  Empresari
 8065       73          6          18   Empresas Publicas de Medellin
15311       71         27          36   Telefonica Empresas 
 1916       70        304          44   Fundacao de Amparo a Pesquisa
 4270       69         18          10   Red de Interconexion Universi
13999       68         36           8   Mega Cable S.A. de C.V. 
11830       65          4          26   Instituto Costarricense de El
 7080       64          4           1   Electronica y Comunicaciones 
 7927       64          5          39   Global One Venezuela 
 7984       61         11          40   Global One Colombia 

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

  ASN   No of nets  Net Savings Description
 4151       612         554      USDA 
18566       534         527      Covad Communications 
 3908       979         504      Supernet, Inc. 
 7843       624         458      Adelphia Corp. 
 7018      1352         416      AT&T 
  189       706         415      Genuity 
 4323       566         388      Time Warner Communications, I
 7132       727         319      Southwestern Bell Internet Se
 1221      1101         297      Telstra Pty Ltd
 6347       370         288      SAVVIS Communications Corpora
 1239       968         284      Sprint 
    1       773         283      GENUITY 
22927       295         281      TELEFONICA DE ARGENTINA 
 6198       458         280      BellSouth Network Solutions, 
 6197       475         279      BellSouth Network Solutions, 
 4355       379         277      EarthLink, Inc. 
  705       463         256      UUNET Technologies, Inc. 
 4814       269         254      China Telecom (Group)
 3561       587         249      Cable & Wireless USA 
27364       266         248      Armstrong Cable Services 

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

Bad AS  Designation  Network              Transit AS  Description
64500   RESERVED      192.83.252.0/24        297       NASA Science Network
 1877   UNALLOCATED   192.108.199.0/24      1880       Stupi, house man's p
65501   PRIVATE       200.73.26.0/24       18747       IFX Communication Ve
65000   PRIVATE       202.172.216.0/24      9226       AS for Singapore Int
65000   PRIVATE       202.172.217.0/24      9226       AS for Singapore Int

Advertised Unallocated 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 
192.16.52.0/24        1239     Sprint 
192.43.230.0/24       4738     South Australian Academic Res
192.44.0.0/19          702     UUNET - Commercial IP service
192.75.199.0/24      25745     Alentus Corporation 
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
192.136.135.0/24      1239     Sprint 
192.153.136.0/21       568     DISO-UNRRA 
192.158.249.0/24     27319     INTERNET SOFTWARE CONSORTIUM,
192.158.251.0/24     27321     INTERNET SOFTWARE CONSORTIUM,
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        /8:18       /9:5       /10:8       /11:13      /12:47      
/13:92      /14:248     /15:460     /16:7375    /17:1644    /18:2953    
/19:8262    /20:8192    /21:5911    /22:8840    /23:10653   /24:68292   
/25:173     /26:192     /27:52      /28:34      /29:20      /30:60      
/31:0       /32:46      

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

  ASN   No of nets  Total ann.   Description
  189      627           706      Genuity 
 3908      615           979      Supernet, Inc. 
18566      529           534      Covad Communications 
  702      485           782      UUNET - Commercial IP service
  701      469          1581      UUNET Technologies, Inc. 
 7018      468          1352      AT&T 
  690      451           502      Merit Network 
 7066      384           485      Virginia Polytechnic Institut
 7843      374           624      Adelphia Corp. 
 1239      373           968      Sprint 
 6198      362           458      BellSouth Network Solutions, 
 6197      354           475      BellSouth Network Solutions, 
11305      317           340      Interland Incorporated 
 2386      299           500      AT&T Data Communications Serv
20115      298           425      Charter Communications 
22927      294           295      TELEFONICA DE ARGENTINA 
 6140      282           295      ImpSat
    1      277           773      GENUITY 
27364      259           266      Armstrong Cable Services 
 7303      240           241      Telecom Argentina Stet-France

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

   4:2        12:670      13:1        15:4        17:2        20:10     
  24:789      25:1        32:86       38:65       40:18       44:2      
  55:1        57:17       61:461      62:517      63:1888     64:1516   
  65:1907     66:2338     67:176      68:322      69:79       80:333    
  81:123     128:150     129:176     130:45      131:83      132:11     
 133:11      134:146     135:4       136:113     137:111     138:105    
 139:66      140:149     141:88      142:94      143:48      144:101    
 145:16      146:268     147:90      148:278     149:73      150:43     
 151:66      152:248     153:53      154:2       155:119     156:46     
 157:44      158:124     159:140     160:34      161:60      162:129    
 163:78      164:309     165:135     166:75      167:325     168:408    
 169:56      170:314     171:6       192:5354    193:2399    194:1986   
 195:991     196:478     198:3563    199:3293    200:2884    202:3541   
 203:4995    204:3064    205:2015    206:2390    207:2395    208:2668   
 209:2916    210:736     211:337     212:1015    213:773     214:20     
 215:21      216:3326    217:613     218:83      219:11      220:57     


End of report

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