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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 16 May, 2003

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

BGP routing table entries examined:                            125988
    Prefixes after maximum aggregation:                         78582
    Unique aggregates announced to Internet:                    59226
Total ASes present in the Internet Routing Table:               15178
Origin-only ASes present in the Internet Routing Table:         13150
Origin ASes announcing only one prefix:                          5977
Transit ASes present in the Internet Routing Table:              2028
Transit-only ASes present in the Internet Routing Table:           70
Average AS path length visible in the Internet Routing Table:     4.8
    Max AS path length visible:                                   255
Illegal AS announcements present in the Routing Table:              1
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from unallocated address space:           18
Number of addresses announced to Internet:                 1230260800
    Equivalent to 73 /8s, 84 /16s and 74 /24s
    Percentage of available address space announced:             33.2
    Percentage of allocated address space announced:             59.3
    Percentage of available address space allocated:             55.9
Total number of prefixes smaller than registry allocations:     54688

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

Prefixes being announced by APNIC Region ASes:                  21353
    Total APNIC prefixes after maximum aggregation:             12405
Prefixes being announced from the APNIC address blocks:         19801
    Unique aggregates announced from the APNIC address blocks:  12073
APNIC Region origin ASes present in the Internet Routing Table:  1800
APNIC Region origin ASes announcing only one prefix:              529
APNIC Region transit ASes present in the Internet Routing Table:  302
Average APNIC Region AS path length visible:                      4.9
    Max APNIC Region AS path length visible:                       16
Number of APNIC addresses announced to Internet:            113214752
    Equivalent to 6 /8s, 191 /16s and 133 /24s
    Percentage of available APNIC address space announced:       61.0

APNIC AS Blocks        4608 - 4864, 7467 - 7722, 9216 - 10239
                       17408 - 18431, 23552 - 24575
APNIC Address Blocks   60/7, 202/7, 210/7, 218/7, 220/7 and 222/8

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

Prefixes being announced by ARIN Region ASes:                   77616
    Total ARIN prefixes after maximum aggregation:              48054
Prefixes being announced from the ARIN address blocks:          55721
    Unique aggregates announced from the ARIN address blocks:   16546
ARIN Region origin ASes present in the Internet Routing Table:   8392
ARIN Region origin ASes announcing only one prefix:              2871
ARIN Region transit ASes present in the Internet Routing Table:   808
Average ARIN Region AS path length visible:                       4.6
    Max ARIN Region AS path length visible:                        17
Number of ARIN addresses announced to Internet:             191832576
    Equivalent to 11 /8s, 111 /16s and 34 /24s
    Percentage of available ARIN address space announced:        71.5

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:                   21675
    Total RIPE prefixes after maximum aggregation:              15867
Prefixes being announced from the RIPE address blocks:          18174
    Unique aggregates announced from the RIPE address blocks:   12008
RIPE Region origin ASes present in the Internet Routing Table:   4583
RIPE Region origin ASes announcing only one prefix:              2491
RIPE Region transit ASes present in the Internet Routing Table:   815
Average RIPE Region AS path length visible:                       5.4
    Max RIPE Region AS path length visible:                        19
Number of RIPE addresses announced to Internet:             130577024
    Equivalent to 7 /8s, 200 /16s and 114 /24s
    Percentage of available RIPE address space announced:        70.8

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:                  5343
    Total LACNIC prefixes after maximum aggregation:             2256
Prefixes being announced from the LACNIC address blocks:         4764
    Unique aggregates announced from the LACNIC address blocks:  2973
LACNIC Region origin ASes present in the Internet Routing Table:  332
LACNIC Region origin ASes announcing only one prefix:              86
LACNIC Region transit ASes present in the Internet Routing Table:  69
Average LACNIC Region AS path length visible:                     5.3
    Max LACNIC Region AS path length visible:                      24
Number of LACNIC addresses announced to Internet:            12428800
    Equivalent to 0 /8s, 189 /16s and 166 /24s
    Percentage of available LACNIC address space announced:      37.0

LACNIC AS Blocks       26592 - 26623, 27648 - 28671
LACNIC Address Blocks  200/7

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 1221     1082       1103         769   Telstra Pty Ltd
 4755      413        134          71   Videsh Sanchar Nigam Ltd. Aut
 2907      386       1976         363   SINET Japan
17557      372         26         147   Pakistan Telecom
  703      366        377         294   UUNET
 2764      320        342         283   connect.com.au pty ltd
 4814      295         86          19   China Telecom (Group)
 7474      271        291         204   Optus Communications Pty Ltd
17676      247       3814          19   XTAGE CORPORATION
 3786      242        773         209   DACOM Corporation
 4134      228       2042         116   Data Communications Bureau
 9583      223         34          17   Satyam Infoway Ltd.,
 4766      214       2475         160   Korea Internet Exchange for "
 9443      184         58          83   Primus Telecommunications
 9800      179        259          57   CHINA UNICOM
 4739      137         57         125   Commerical Internet eXchange 
 9498      135          9          13   BHARTI BT INTERNET LTD.
 9238      133          8          17   TATA ISP
 4716      128        729         122   TTnet
 9768      126        384          64   Korea Telecom

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1565       8935        1103   UUNET Technologies, Inc. 
 7018     1327       7166         921   AT&T 
 4151     1153        691          60   USDA 
 7132      966       6476         209   Southwestern Bell Internet Se
 1239      941       3010         661   Sprint 
 3908      923       1573         477   Supernet, Inc. 
  189      704        341         287   Genuity 
    1      681       2683         464   GENUITY 
 7843      665        347         175   Adelphia Corp. 
 4323      591        514         169   Time Warner Communications, I
 2386      586        491         279   AT&T Data Communications Serv
18566      577        160           8   Covad Communications 
  705      539        291         237   UUNET Technologies, Inc. 
  852      538       1155         423   Telus Advanced Communications
 3561      508       2342         327   Cable & Wireless USA 
  209      492       2105         297   Qwest 
 6197      485        341         194   BellSouth Network Solutions, 
 7066      485        204         260   Virginia Polytechnic Institut
  690      476         68         315   Merit Network 
20115      474        195         288   Charter Communications 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      755       2173         641   UUNET - Commercial IP service
 3320      346       2004         228   Deutsche Telekom AG
 3301      307       1157         297   TeliaNet Sweden
 3215      302        836         173   France Telecom Transpac
  680      232       2053         229   DFN-IP service G-WiN
 1257      227        327         189   SWIPnet Swedish IP Network
 8220      222        384         210   COLT Internet - International
  719      215        307         124   LANLINK autonomous system
 5400      203        112         114   BT Ignite European Backbone
 5515      182        795         153   Sonera Solution Autonomous Sy
  786      179       1874         179   The JANET IP Service
20858      165         17           3   This AS will be used to conne
 8708      156         44         149   Romania Data Systems S.A.
 3303      141        517         140   Swisscom Ltd
12302      128         18          35   MobiFon S.A.
 2856      122       1299         112   BTnet UK Regional network
 3269      116        819          63   TELECOM ITALIA
 3246      113        383         110   Song Networks
 3352      107        748          30   Ibernet, Internet Access Netw
 2647       99       4129          39   SITA

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      295         98         106   ImpSat
 7303      255         36          64   Telecom Argentina Stet-France
 8151      220        335         122   UniNet S.A. de C.V. 
11172      167         66          39   Servicios Alestra S.A de C.V 
 6503      139        205          99   AVANTEL, S.A. 
16814      139          9          18   NSS, S.A. 
10620      113          7          33   TVCABLE BOGOTA 
11340      106          3          34   Red Universitaria Nacional 
 6147       93         62          20   Telefonica Del Peru 
11992       82          8          33   Integrated Systems 
 8065       78          8          16   Empresas Publicas de Medellin
 4270       75         18          10   Red de Interconexion Universi
 6535       74          5          23   Chilesat Servicios  Empresari
13999       74         36           8   Mega Cable S.A. de C.V. 
 1916       73        306          43   Fundacao de Amparo a Pesquisa
15311       71         12          35   Telefonica Empresas 
11830       66          4          27   Instituto Costarricense de El
 7738       65        186          12   Telecomunicacoes da Bahia S.A
 7927       65          5          40   Global One Venezuela 
 7080       64          4           1   Electronica y Comunicaciones 

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

  ASN   No of nets  Net Savings Description
 4151      1153        1093      USDA 
 7132       966         757      Southwestern Bell Internet Se
18566       577         569      Covad Communications 
 7843       665         490      Adelphia Corp. 
 3908       923         446      Supernet, Inc. 
 4323       591         422      Time Warner Communications, I
  189       704         417      Genuity 
 7018      1327         406      AT&T 
 4755       413         342      Videsh Sanchar Nigam Ltd. Aut
 1221      1082         313      Telstra Pty Ltd
 2386       586         307      AT&T Data Communications Serv
  705       539         302      UUNET Technologies, Inc. 
 4355       397         292      EarthLink, Inc. 
 6197       485         291      BellSouth Network Solutions, 
 6347       368         289      SAVVIS Communications Corpora
 6198       462         286      BellSouth Network Solutions, 
 1239       941         280      Sprint 
 4814       295         276      China Telecom (Group)
22927       288         275      TELEFONICA DE ARGENTINA 
27364       294         274      Armstrong Cable Services 

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

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
39.0.0.0/8            4554     Exchange Point Blocks 
132.0.0.0/10           568     DISO-UNRRA 
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
192.83.16.0/20        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 
192.158.254.0/24       705     UUNET Technologies, Inc. 
192.172.0.0/19         568     DISO-UNRRA 

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      /12:51      
/13:96      /14:252     /15:470     /16:7419    /17:1680    /18:2969    
/19:8446    /20:8395    /21:6032    /22:9007    /23:10659   /24:69952   
/25:160     /26:217     /27:52      /28:26      /29:12      /30:23      
/31:0       /32:26      

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

  ASN   No of nets  Total ann.   Description
  189      627           704      Genuity 
 3908      579           923      Supernet, Inc. 
18566      571           577      Covad Communications 
  702      464           755      UUNET - Commercial IP service
 7018      464          1327      AT&T 
  701      435          1565      UUNET Technologies, Inc. 
 7843      428           665      Adelphia Corp. 
  690      427           476      Merit Network 
 7066      382           485      Virginia Polytechnic Institut
 2386      367           586      AT&T Data Communications Serv
 6197      361           485      BellSouth Network Solutions, 
 6198      361           462      BellSouth Network Solutions, 
 1239      352           941      Sprint 
20115      335           474      Charter Communications 
 3320      289           346      Deutsche Telekom AG
27364      287           294      Armstrong Cable Services 
 4814      281           295      China Telecom (Group)
    1      252           681      GENUITY 
 3215      226           302      France Telecom Transpac
22927      226           288      TELEFONICA DE ARGENTINA 

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

  12:702      13:1        15:4        16:1        17:3        20:8      
  24:826      25:1        32:87       38:121      40:19       44:2      
  55:1        57:17       61:444      62:567      63:1869     64:1770   
  65:1930     66:2428     67:172      68:380      69:129      80:343    
  81:126     128:146     129:178     130:45      131:78      132:11     
 133:1       134:146     135:4       136:115     137:109     138:108    
 139:64      140:135     141:117     142:98      143:44      144:100    
 145:14      146:269     147:95      148:289     149:72      150:44     
 151:79      152:241     153:57      154:7       155:109     156:46     
 157:40      158:127     159:147     160:36      161:75      162:141    
 163:75      164:278     165:142     166:94      167:335     168:397    
 169:62      170:305     171:7       192:5306    193:2439    194:1977   
 195:1045    196:463     198:3575    199:3809    200:2971    202:3796   
 203:5236    204:3009    205:2066    206:2377    207:2394    208:2622   
 209:2846    210:774     211:333     212:923     213:807     214:20     
 215:23      216:3272    217:617     218:90      219:31      220:96     
 221:2      

End of report

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