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[bgp-stats] Routing Table Report - Japan view



Routing Table Report   04:00 +10GMT Wed 05 Mar, 2003

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

BGP routing table entries examined:                            122071
    Prefixes after maximum aggregation:                         77723
    Unique aggregates announced to Internet:                    58760
Total ASes present in the Internet Routing Table:               14743
Origin-only ASes present in the Internet Routing Table:         12801
Origin ASes announcing only one prefix:                          5766
Transit ASes present in the Internet Routing Table:              1942
Transit-only ASes present in the Internet Routing Table:           64
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:             11
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    17
Number of addresses announced to Internet:                 1197776709
    Equivalent to 71 /8s, 100 /16s and 159 /24s
    Percentage of available address space announced:             32.3
    Percentage of allocated address space announced:             58.2
    Percentage of available address space allocated:             55.5
Total number of prefixes smaller than registry allocations:     57149

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

Prefixes being announced by APNIC Region ASes:                  20435
    Total APNIC prefixes after maximum aggregation:             12047
Prefixes being announced from the APNIC address blocks:         18913
    Unique aggregates announced from the APNIC address blocks:  11608
APNIC Region origin ASes present in the Internet Routing Table:  1742
APNIC Region origin ASes announcing only one prefix:              523
APNIC Region transit ASes present in the Internet Routing Table:  292
Average APNIC Region AS path length visible:                      5.3
    Max APNIC Region AS path length visible:                       12
Number of APNIC addresses announced to Internet:            106686368
    Equivalent to 6 /8s, 91 /16s and 231 /24s
    Percentage of available APNIC address space announced:       56.6

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 220/6

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

Prefixes being announced by ARIN Region ASes:                   75196
    Total ARIN prefixes after maximum aggregation:              47897
Prefixes being announced from the ARIN address blocks:          53420
    Unique aggregates announced from the ARIN address blocks:   16686
ARIN Region origin ASes present in the Internet Routing Table:   8203
ARIN Region origin ASes announcing only one prefix:              2763
ARIN Region transit ASes present in the Internet Routing Table:   783
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        17
Number of ARIN addresses announced to Internet:             187666816
    Equivalent to 11 /8s, 47 /16s and 145 /24s
    Percentage of available ARIN address space announced:        69.9

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 - 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:                   21147
    Total RIPE prefixes after maximum aggregation:              15566
Prefixes being announced from the RIPE address blocks:          17696
    Unique aggregates announced from the RIPE address blocks:   11764
RIPE Region origin ASes present in the Internet Routing Table:   4406
RIPE Region origin ASes announcing only one prefix:              2396
RIPE Region transit ASes present in the Internet Routing Table:   790
Average RIPE Region AS path length visible:                       5.7
    Max RIPE Region AS path length visible:                        14
Number of RIPE addresses announced to Internet:             125534464
    Equivalent to 7 /8s, 123 /16s and 129 /24s
    Percentage of available RIPE address space announced:        74.8

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:                  5283
    Total LACNIC prefixes after maximum aggregation:             2213
Prefixes being announced from the LACNIC address blocks:         4671
    Unique aggregates announced from the LACNIC address blocks:  3033
LACNIC Region origin ASes present in the Internet Routing Table:  330
LACNIC Region origin ASes announcing only one prefix:              84
LACNIC Region transit ASes present in the Internet Routing Table:  68
Average LACNIC Region AS path length visible:                     5.8
    Max LACNIC Region AS path length visible:                      10
Number of LACNIC addresses announced to Internet:            12201472
    Equivalent to 0 /8s, 186 /16s and 46 /24s
    Percentage of available LACNIC address space announced:      72.7

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     1108       1119         804   Telstra Pty Ltd
  703      409        369         316   UUNET
 2907      389       1960         368   SINET Japan
17557      358         25         134   Pakistan Telecom
 2764      325        341         292   connect.com.au pty ltd
 7474      307        276         208   Optus Communications Pty Ltd
 4134      304       2637          96   Data Communications Bureau
 4814      264         79          15   China Telecom (Group)
 3786      241        773         207   DACOM Corporation
 4755      233        133          73   Videsh Sanchar Nigam Ltd. Aut
17676      232       3574          24   XTAGE CORPORATION
 9583      216         33          13   Satyam Infoway Ltd.,
 4766      208       2074         155   Korea Internet Exchange for "
 9443      178         57          76   Primus Telecommunications
 9800      166        205          41   CHINA UNICOM
 4765      152         10          14   World Net & Services Co., Ltd
 9238      137          8          17   TATA ISP
 4716      128        735         122   TTnet
 4739      128         57         116   Commerical Internet eXchange 
 9768      128        384          64   Korea Telecom

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1585       8873        1145   UUNET Technologies, Inc. 
 7018     1384       7166         959   AT&T 
 3908     1248       1590         486   Supernet, Inc. 
 1239      976       3153         689   Sprint 
    1      664       8087         433   GENUITY 
  852      601       1107         445   Telus Advanced Communications
 7843      579        408         212   Adelphia Corp. 
 4323      534        473         168   Time Warner Communications, I
 4151      532        691          59   USDA 
  209      530       2092         337   Qwest 
 6197      500        555         114   BellSouth Network Solutions, 
  690      499         73         309   Merit Network 
 3561      497       2304         342   Cable & Wireless USA 
18566      494        114           7   Covad Communications 
 7066      490        204         254   Virginia Polytechnic Institut
 2386      486        480         245   AT&T Data Communications Serv
  705      450        165         196   UUNET Technologies, Inc. 
 6198      440        195         202   BellSouth Network Solutions, 
 4355      401        308         112   EarthLink, Inc. 
 3549      399        693         305   Global Crossing 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      789       2234         652   UUNET - Commercial IP service
 3301      316       1143         304   TeliaNet Sweden
 3215      314        818         172   France Telecom Transpac
 3320      265       1996         228   Deutsche Telekom AG
  680      232       2054         229   DFN-IP service G-WiN
 1257      218        370         195   SWIPnet Swedish IP Network
  719      203        307         127   LANLINK autonomous system
 5400      198         86          98   BT Ignite European Backbone
 5515      186        779         160   Sonera Solution Autonomous Sy
  786      179       1874         179   The JANET IP Service
 8708      153         42         150   Romania Data Systems S.A.
20858      148         17           3   This AS will be used to conne
 3303      145        517         144   Swisscom Ltd
 8220      126        182         117   COLT Internet - International
12302      122         17          29   MobiFon S.A.
 2856      118       1299         108   BTnet UK Regional network
 3269      111        751          61   TELECOM ITALIA
 3233      108         11          12   RNC - Romanian Natioanal R&D 
 3246      104        360         101   Song Networks
 3352      100        654          30   Ibernet, Internet Access Netw

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      283         98         104   ImpSat
 7303      240         36          49   Telecom Argentina Stet-France
 8151      214        341         116   UniNet S.A. de C.V. 
11172      161         66          33   Servicios Alestra S.A de C.V 
 6503      157        191         110   AVANTEL, S.A. 
16814      139          9          18   NSS, S.A. 
13999      127         36           8   Mega Cable S.A. de C.V. 
11340      110          3          38   Red Universitaria Nacional 
10620      107          7          31   TVCABLE BOGOTA 
 6147       74         62          20   Telefonica Del Peru 
11992       74          8          35   Integrated Systems 
 1916       73        306          44   Fundacao de Amparo a Pesquisa
 6535       72          5          23   Chilesat Servicios  Empresari
 8065       72          6          21   Empresas Publicas de Medellin
15311       71         27          36   Telefonica Empresas 
 4270       67         18          10   Red de Interconexion Universi
 7984       66         11          42   Global One Colombia 
 7080       64          4           1   Electronica y Comunicaciones 
 7927       64          5          39   Global One Venezuela 
11830       61          4          20   Instituto Costarricense de El

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

  ASN   No of nets  Net Savings Description
 3908      1248         762      Supernet, Inc. 
18566       494         487      Covad Communications 
 4151       532         473      USDA 
 7018      1384         425      AT&T 
 6197       500         386      BellSouth Network Solutions, 
 7843       579         367      Adelphia Corp. 
 4323       534         366      Time Warner Communications, I
11492       322         319      Cable One 
 1221      1108         304      Telstra Pty Ltd
 6347       370         292      SAVVIS Communications Corpora
 4355       401         289      EarthLink, Inc. 
 1239       976         287      Sprint 
22927       295         281      TELEFONICA DE ARGENTINA 
  705       450         254      UUNET Technologies, Inc. 
 4814       264         249      China Telecom (Group)
 2386       486         241      AT&T Data Communications Serv
 6198       440         238      BellSouth Network Solutions, 
 7066       490         236      Virginia Polytechnic Institut
    1       664         231      GENUITY 
17557       358         224      Pakistan Telecom

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

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 
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
192.153.136.0/21       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      /12:46      
/13:92      /14:240     /15:445     /16:7351    /17:1605    /18:2900    
/19:8181    /20:8118    /21:5820    /22:8834    /23:10580   /24:67094   
/25:167     /26:188     /27:108     /28:81      /29:61      /30:61      
/31:4       /32:55      

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

  ASN   No of nets  Total ann.   Description
 3908      819          1248      Supernet, Inc. 
  702      493           789      UUNET - Commercial IP service
18566      489           494      Covad Communications 
 7018      486          1384      AT&T 
  701      452          1585      UUNET Technologies, Inc. 
  690      448           499      Merit Network 
 7066      389           490      Virginia Polytechnic Institut
 6197      368           500      BellSouth Network Solutions, 
 1239      363           976      Sprint 
 6198      350           440      BellSouth Network Solutions, 
 7843      341           579      Adelphia Corp. 
11492      321           322      Cable One 
22927      294           295      TELEFONICA DE ARGENTINA 
 2386      282           486      AT&T Data Communications Serv
 6140      270           283      ImpSat
20115      269           397      Charter Communications 
 3215      239           314      France Telecom Transpac
 7303      239           240      Telecom Argentina Stet-France
 4355      229           401      EarthLink, Inc. 
  209      221           530      Qwest 

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

  12:652      13:1        15:4        17:2        20:9        24:846    
  25:1        32:90       34:1        38:61       40:18       44:2      
  55:1        57:16       61:450      62:501      63:1920     64:1403   
  65:1892     66:1465     67:214      68:285      69:53       80:329    
  81:101     128:147     129:223     130:40      131:85      132:11     
 133:2       134:147     135:4       136:121     137:116     138:105    
 139:74      140:138     141:123     142:94      143:48      144:88     
 145:18      146:264     147:85      148:269     149:73      150:43     
 151:110     152:253     153:51      154:3       155:107     156:42     
 157:42      158:124     159:140     160:34      161:60      162:135    
 163:85      164:301     165:141     166:80      167:321     168:392    
 169:54      170:306     171:8       192:5286    193:2390    194:2014   
 195:963     196:475     198:3606    199:3213    200:2893    202:3544   
 203:5074    204:3046    205:2028    206:2413    207:2410    208:2691   
 209:2804    210:736     211:335     212:968     213:743     214:21     
 215:21      216:3252    217:597     218:81      219:14      220:52     


End of report