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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

If you have any comments please contact Philip Smith <pfs at cisco.com>.

Routing Table Report   20:00 +10GMT Fri 23 May, 2003

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

BGP routing table entries examined:                            126181
    Prefixes after maximum aggregation:                         78783
    Unique aggregates announced to Internet:                    59131
Total ASes present in the Internet Routing Table:               15226
Origin-only ASes present in the Internet Routing Table:         13198
Origin ASes announcing only one prefix:                          5968
Transit ASes present in the Internet Routing Table:              2028
Transit-only ASes present in the Internet Routing Table:           73
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:              4
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from unallocated address space:           18
Number of addresses announced to Internet:                 1230646464
    Equivalent to 73 /8s, 90 /16s and 44 /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:     54837

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

Prefixes being announced by APNIC Region ASes:                  21501
    Total APNIC prefixes after maximum aggregation:             12486
Prefixes being announced from the APNIC address blocks:         19899
    Unique aggregates announced from the APNIC address blocks:  12026
APNIC Region origin ASes present in the Internet Routing Table:  1804
APNIC Region origin ASes announcing only one prefix:              521
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:            113446432
    Equivalent to 6 /8s, 195 /16s and 14 /24s
    Percentage of available APNIC address space announced:       61.1

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:                   77763
    Total ARIN prefixes after maximum aggregation:              48191
Prefixes being announced from the ARIN address blocks:          55810
    Unique aggregates announced from the ARIN address blocks:   16539
ARIN Region origin ASes present in the Internet Routing Table:   8426
ARIN Region origin ASes announcing only one prefix:              2874
ARIN Region transit ASes present in the Internet Routing Table:   812
Average ARIN Region AS path length visible:                       4.6
    Max ARIN Region AS path length visible:                        17
Number of ARIN addresses announced to Internet:             192109056
    Equivalent to 11 /8s, 115 /16s and 90 /24s
    Percentage of available ARIN address space announced:        71.6

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:                   21561
    Total RIPE prefixes after maximum aggregation:              15856
Prefixes being announced from the RIPE address blocks:          18075
    Unique aggregates announced from the RIPE address blocks:   12050
RIPE Region origin ASes present in the Internet Routing Table:   4589
RIPE Region origin ASes announcing only one prefix:              2486
RIPE Region transit ASes present in the Internet Routing Table:   816
Average RIPE Region AS path length visible:                       5.5
    Max RIPE Region AS path length visible:                        20
Number of RIPE addresses announced to Internet:             131014912
    Equivalent to 7 /8s, 207 /16s and 33 /24s
    Percentage of available RIPE address space announced:        71.0

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:                  5352
    Total LACNIC prefixes after maximum aggregation:             2250
Prefixes being announced from the LACNIC address blocks:         4759
    Unique aggregates announced from the LACNIC address blocks:  2973
LACNIC Region origin ASes present in the Internet Routing Table:  334
LACNIC Region origin ASes announcing only one prefix:              87
LACNIC Region transit ASes present in the Internet Routing Table:  67
Average LACNIC Region AS path length visible:                     5.2
    Max LACNIC Region AS path length visible:                      24
Number of LACNIC addresses announced to Internet:            12579584
    Equivalent to 0 /8s, 191 /16s and 243 /24s
    Percentage of available LACNIC address space announced:      37.5

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     1081       1103         770   Telstra Pty Ltd
 4755      407        135          72   Videsh Sanchar Nigam Ltd. Aut
 2907      376       1927         352   SINET Japan
17557      375         26         152   Pakistan Telecom
  703      347        373         276   UUNET
 2764      315        342         279   connect.com.au pty ltd
 4814      295         86          19   China Telecom (Group)
 7474      270        290         203   Optus Communications Pty Ltd
17676      248       3830          17   XTAGE CORPORATION
 3786      242        773         209   DACOM Corporation
 4134      235       2042         117   Data Communications Bureau
 9583      225         34          17   Satyam Infoway Ltd.,
 4766      213       2475         159   Korea Internet Exchange for "
 9443      183         58          83   Primus Telecommunications
 9800      181        260          59   CHINA UNICOM
 9498      141         10          16   BHARTI BT INTERNET LTD.
 4739      137         57         125   Commerical Internet eXchange 
 9238      134          8          17   TATA ISP
 4716      127        729         121   TTnet
 7539      127        124         101   TANet2, sponsored by NSC, TAI

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1558       8933        1101   UUNET Technologies, Inc. 
 7018     1320       7190         908   AT&T 
 4151     1258        691          60   USDA 
 7132      965       6475         207   Southwestern Bell Internet Se
 1239      942       3010         664   Sprint 
 3908      926       1557         485   Supernet, Inc. 
  189      706        341         289   Genuity 
 7843      671        348         177   Adelphia Corp. 
    1      658       2622         447   GENUITY 
 4323      597        525         175   Time Warner Communications, I
18566      579        160           8   Covad Communications 
 2386      571        507         271   AT&T Data Communications Serv
  852      534       1123         422   Telus Advanced Communications
  705      509        272         332   UUNET Technologies, Inc. 
  209      489       2104         294   Qwest 
 6197      487        341         196   BellSouth Network Solutions, 
 7066      485        204         260   Virginia Polytechnic Institut
  690      477         69         316   Merit Network 
20115      472        195         288   Charter Communications 
 6198      463        229         177   BellSouth Network Solutions, 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      755       2175         641   UUNET - Commercial IP service
 3320      346       2004         228   Deutsche Telekom AG
 3301      307       1140         294   TeliaNet Sweden
 3215      302        852         173   France Telecom Transpac
  680      232       2053         229   DFN-IP service G-WiN
 1257      227        327         189   SWIPnet Swedish IP Network
 8220      224        384         211   COLT Internet - International
  719      215        307         124   LANLINK autonomous system
 5400      204        121         115   BT Ignite European Backbone
 5515      181        795         152   Sonera Solution Autonomous Sy
  786      179       1874         179   The JANET IP Service
20858      163         17           3   This AS will be used to conne
 8708      154         44         149   Romania Data Systems S.A.
 3303      143        549         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      112        365         110   Song Networks
 3352      108        780          32   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      300         98         108   ImpSat
 7303      245         36          58   Telecom Argentina Stet-France
 8151      212        350         118   UniNet S.A. de C.V. 
11172      169         66          41   Servicios Alestra S.A de C.V 
16814      137          9          18   NSS, S.A. 
 6503      136        190          99   AVANTEL, S.A. 
10620      113          7          33   TVCABLE BOGOTA 
11340      105          3          33   Red Universitaria Nacional 
 6147       96         62          20   Telefonica Del Peru 
11992       90          9          38   Integrated Systems 
 8065       80          8          14   Empresas Publicas de Medellin
 6535       74          5          23   Chilesat Servicios  Empresari
 1916       73        306          43   Fundacao de Amparo a Pesquisa
15311       71         12          35   Telefonica Empresas 
 4270       68         18           9   Red de Interconexion Universi
 7738       67        186          12   Telecomunicacoes da Bahia S.A
11830       66          4          27   Instituto Costarricense de El
 7080       64          4           1   Electronica y Comunicaciones 
 7927       64          5          39   Global One Venezuela 
11311       64          6          13   Sinectis S.A. 

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

  ASN   No of nets  Net Savings Description
 4151      1258        1198      USDA 
 7132       965         758      Southwestern Bell Internet Se
18566       579         571      Covad Communications 
 7843       671         494      Adelphia Corp. 
 3908       926         441      Supernet, Inc. 
 4323       597         422      Time Warner Communications, I
  189       706         417      Genuity 
 7018      1320         412      AT&T 
 4755       407         335      Videsh Sanchar Nigam Ltd. Aut
 1221      1081         311      Telstra Pty Ltd
 2386       571         300      AT&T Data Communications Serv
 6197       487         291      BellSouth Network Solutions, 
 4355       400         290      EarthLink, Inc. 
 6198       463         286      BellSouth Network Solutions, 
 6347       361         282      SAVVIS Communications Corpora
 1239       942         278      Sprint 
 4814       295         276      China Telecom (Group)
22927       288         275      TELEFONICA DE ARGENTINA 
27364       294         274      Armstrong Cable Services 
22909       269         252      Comcast Cable Corporation 

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

Bad AS  Designation  Network              Transit AS  Description
65516   PRIVATE       61.232.70.0/24       17621       China Netcom Corp.
65516   PRIVATE       61.232.71.0/24       17621       China Netcom Corp.
65516   PRIVATE       61.232.72.0/22       17621       China Netcom Corp.
 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      
/13:98      /14:254     /15:473     /16:7420    /17:1683    /18:2970    
/19:8437    /20:8424    /21:6110    /22:9034    /23:10649   /24:70028   
/25:161     /26:210     /27:52      /28:26      /29:12      /30:20      
/31:0       /32:25      

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

  ASN   No of nets  Total ann.   Description
  189      629           706      Genuity 
 3908      578           926      Supernet, Inc. 
18566      573           579      Covad Communications 
  702      464           755      UUNET - Commercial IP service
 7018      455          1320      AT&T 
  701      436          1558      UUNET Technologies, Inc. 
 7843      435           671      Adelphia Corp. 
  690      428           477      Merit Network 
 7066      382           485      Virginia Polytechnic Institut
 6197      363           487      BellSouth Network Solutions, 
 6198      362           463      BellSouth Network Solutions, 
 1239      351           942      Sprint 
 2386      351           571      AT&T Data Communications Serv
20115      333           472      Charter Communications 
 3320      289           346      Deutsche Telekom AG
27364      287           294      Armstrong Cable Services 
 4814      281           295      China Telecom (Group)
    1      245           658      GENUITY 
22927      226           288      TELEFONICA DE ARGENTINA 
 3215      225           302      France Telecom Transpac

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

  12:706      13:1        15:4        16:1        17:3        20:8      
  24:831      25:1        32:87       38:123      40:19       44:2      
  55:1        57:17       61:459      62:561      63:1878     64:1773   
  65:1929     66:2453     67:174      68:387      69:146      80:346    
  81:124     128:145     129:181     130:44      131:80      132:12     
 133:1       134:177     135:4       136:116     137:107     138:108    
 139:65      140:138     141:117     142:93      143:44      144:105    
 145:14      146:263     147:95      148:287     149:70      150:44     
 151:79      152:241     153:57      154:7       155:108     156:48     
 157:35      158:126     159:145     160:39      161:75      162:130    
 163:75      164:306     165:144     166:93      167:330     168:399    
 169:62      170:317     171:7       192:5306    193:2403    194:1974   
 195:1016    196:466     198:3577    199:3913    200:2957    202:3759   
 203:5217    204:2998    205:2051    206:2380    207:2373    208:2628   
 209:2840    210:809     211:332     212:946     213:781     214:20     
 215:23      216:3260    217:606     218:91      219:38      220:95     
 221:2      

End of report

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