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[bgp-stats] Routing Table Report - Japan view



*  BGP Statistics focusing on the Asia Pacific Region *
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Routing Table Report   04:00 +10GMT Mon 03 Jun, 2002

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

BGP routing table entries examined:                            113165
    Prefixes after maximum aggregation:                         73254
    Unique aggregates announced to Internet:                    52632
Total ASes present in the Internet Routing Table:               13166
Origin-only ASes present in the Internet Routing Table:         11426
Origin ASes announcing only one prefix:                          5015
Transit ASes present in the Internet Routing Table:              1740
Transit-only ASes present in the Internet Routing Table:           54
Average AS path length visible in the Internet Routing Table:     5.4
    Max AS path length visible:                                    18
Illegal AS announcements present in the Routing Table:              1
Non-routable prefixes present in the Routing Table:                 1
Prefixes being announced from the IANA Reserved Address blocks:    38
Number of addresses announced to Internet:                 1182830924
    Equivalent to 70 /8s, 128 /16s and 145 /24s
    Percentage of available address space announced:             31.9
    Percentage of allocated address space announced:             59.5
    Percentage of available address space allocated:             53.7
Total number of prefixes smaller than registry allocations:     45827

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

Prefixes being announced by APNIC Region ASes:                  18211
    Total APNIC prefixes after maximum aggregation:             10990
Prefixes being announced from the APNIC address blocks:         16686
    Unique aggregates announced from the APNIC address blocks:   9830
APNIC Region origin ASes present in the Internet Routing Table:  1522
APNIC Region origin ASes announcing only one prefix:              498
APNIC Region transit ASes present in the Internet Routing Table:  269
Average APNIC Region AS path length visible:                      5.3
    Max APNIC Region AS path length visible:                       13
Number of APNIC addresses announced to Internet:             89899616
    Equivalent to 5 /8s, 91 /16s and 194 /24s
    Percentage of available APNIC address space announced:       66.5

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

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

Prefixes being announced by ARIN Region ASes:                   75700
    Total ARIN prefixes after maximum aggregation:              47780
Prefixes being announced from the ARIN address blocks:          53863
    Unique aggregates announced from the ARIN address blocks:   16432
ARIN Region origin ASes present in the Internet Routing Table:   7772
ARIN Region origin ASes announcing only one prefix:              2466
ARIN Region transit ASes present in the Internet Routing Table:   757
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        18
Number of ARIN addresses announced to Internet:             196777156
    Equivalent to 11 /8s, 186 /16s and 148 /24s
    Percentage of available ARIN address space announced:        73.3

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 - 26623
ARIN Address Blocks    24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6,
                       208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                   19254
    Total RIPE prefixes after maximum aggregation:              14484
Prefixes being announced from the RIPE address blocks:          15939
    Unique aggregates announced from the RIPE address blocks:   10525
RIPE Region origin ASes present in the Internet Routing Table:   3818
RIPE Region origin ASes announcing only one prefix:              2051
RIPE Region transit ASes present in the Internet Routing Table:   697
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        17
Number of RIPE addresses announced to Internet:             110079520
    Equivalent to 6 /8s, 143 /16s and 174 /24s
    Percentage of available RIPE address space announced:        72.9

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
RIPE Address Blocks    62/8, 80/7, 193/8, 194/7, 212/7 and 217/8

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 1221     1269       1223         911   Telstra Pty Ltd
 4538      482       1258          18   China Education and Research 
 2907      427       1861         368   SINET Japan
  703      406        339         326   UUNET Technologies, Inc. 
 2764      393        360         358   connect.com.au pty ltd
 7474      307        291         203   Optus Communications Pty Ltd
17557      291         19         110   Pakistan Telecom
 4134      277       2100          94   Data Communications Bureau
 9443      266         44          63   Primus Telecommunications
 4755      247        107          77   Videsh Sanchar Nigam Ltd. Aut
 4766      225       1516         156   Korea Internet Exchange for "
 9583      179         32           5   Satyam Infoway Ltd.,
 4814      178         70          12   China Telecom (Group) - Beiji
 7539      150        219         144   TANet2, sponsored by NSC, TAI
 9768      146        386          75   Korea Telecom
17676      144       2226          22   XTAGE CORPORATION
 7657      136         22          86   The Internet Group Limited
 4780      116        186          39   Digital United Inc.
 4713      115       1009         106   NTT Communications Corporatio
 9800      114        186          22   CHINA UNICOM

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702     1019       2605         846   UUNET Technologies, Inc. 
 3301      398        908         349   TeliaNet Sweden
 3352      278        521          27   Ibernet, Internet Access Netw
 3215      266        599         165   France Telecom / &Equant
 5515      266        783         176   Sonera Finland Autonomous Sys
 3320      236       1947         181   Deutsche Telekom AG
  680      231       2149         230   DFN-IP service G-WiN
 1257      206        430         203   SWIPnet Swedish IP Network
 5400      201         83          95   Concert European Core Network
  719      189        290         127   LANLINK autonomous system
  786      181       1874         180   The JANET IP Service
 8708      146         23         140   Romania Data Systems S.A.
12302      132         10          45   MobiFon S.A.
 2856      125        789         115   BTnet UK Regional network
 3303      117        546         116   Swisscom Ltd
 8297      114         57          65   Teleglobe Autonomous System i
 3269      113        692          70   TELECOM ITALIA
 3246      107        300         101   Song Networks / Clinet
 5511      105        191          87   France Telecom
  517       99        225          95   KPNQwest Germany GmbH

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     2004       8914        1434   UUNET Technologies, Inc. 
 7018     1295       7564         937   AT&T 
 3908      904       1641         491   Supernet, Inc. 
 1239      819       3422         651   Sprint 
    1      812       8152         452   GENUITY 
  852      802       1192         451   Telus Advanced Communications
 7046      644        918         434   UUNET Technologies, Inc. 
 4323      627        436         257   Time Warner Communications, I
  209      590       1970         325   Qwest 
  690      577         78         376   Merit Network 
 7132      570        606         138   Southwestern Bell Internet Se
  705      547        119         269   UUNET Technologies, Inc. 
 3549      515        854         322   Global Crossing 
 7843      500        357          70   Adelphia Corp. 
 7066      475        202         248   Virginia Polytechnic Institut
 2914      395       2108         388   Verio, Inc. 
15290      390        299         203   AT&T Canada IES 
 3741      345        731         236   The Internet Solution 
 2149      344        191         285   Performance Systems, Inc. 
 6197      340        245         164   BellSouth Network Solutions, 

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

  ASN   No of nets  Net Savings Description
 4538       482         464      China Education and Research 
 7132       570         432      Southwestern Bell Internet Se
 7843       500         430      Adelphia Corp. 
 3908       904         413      Supernet, Inc. 
 4323       627         370      Time Warner Communications, I
    1       812         360      GENUITY 
 7018      1295         358      AT&T 
 1221      1269         358      Telstra Pty Ltd
  852       802         351      Telus Advanced Communications
11371       292         286      Rhythms NetConnections 
  705       547         278      UUNET Technologies, Inc. 
 4151       287         271      USDA 
  209       590         265      Qwest 
 6347       337         258      SAVVIS Communications Corpora
 3352       278         251      Ibernet, Internet Access Netw
 7029       262         247      Alltel Information Services, 
 4355       282         244      EarthLink, Inc. 
 7066       475         227      Virginia Polytechnic Institut
18566       222         218      Covad Communications 
 6198       319         214      BellSouth Network Solutions, 

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

Bad AS  Designation  Network              Transit AS  Description
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix             Origin AS  Description
192.0.2.0/24          1103     SURFnet BV

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

Network            Origin AS  Description
39.0.0.0/8            4554     Exchange Point Blocks 
132.0.0.0/10           568     DISO-UNRRA 
134.137.0.0/16        7170     AT&T Government Markets 
135.0.0.0/13         10455     Lucent Technologies 
137.0.0.0/13           568     DISO-UNRRA 
138.94.0.0/16            1     GENUITY 
154.150.0.0/16        6494     IDCI 
158.0.0.0/13           568     DISO-UNRRA 
164.233.0.0/16        6020     DISA NETWORK SERVICES 
192.26.98.0/24        1239     Sprint 
192.44.0.0/19          702     UUNET Technologies, Inc. 
192.72.0.0/18         4780     Digital United Inc.
192.72.0.0/16         4780     Digital United Inc.
192.83.14.0/24        5515     Sonera Finland Autonomous Sys
192.83.16.0/20        5515     Sonera Finland Autonomous Sys
192.83.25.0/24        5515     Sonera Finland Autonomous Sys
192.83.32.0/19        5515     Sonera Finland Autonomous Sys
192.83.96.0/22        5515     Sonera Finland Autonomous Sys
192.83.100.0/24       5515     Sonera Finland Autonomous Sys
192.91.198.0/24       2568     CTS Network Services 
192.92.167.0/24        297     NASA Science Network 
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T 
192.135.248.0/23       109     Cisco Systems, Inc. 
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
192.152.213.0/24      1239     Sprint 
192.153.136.0/21       568     DISO-UNRRA 
192.156.0.0/19         568     DISO-UNRRA 
192.172.0.0/19         568     DISO-UNRRA 
192.195.253.0/24       237     Merit Network 
192.208.29.0/24       3908     Supernet, Inc. 
192.208.30.0/23       3908     Supernet, Inc. 
192.243.36.0/23       7168     Northwest Link 

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

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:21       /9:6       /10:7       /11:12      /12:34      
/13:85      /14:232     /15:414     /16:7225    /17:1435    /18:2593    
/19:7583    /20:7183    /21:5113    /22:7795    /23:9481    /24:63201   
/25:215     /26:185     /27:83      /28:96      /29:46      /30:92      
/31:1       /32:27      

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

  ASN   No of nets  Total ann.   Description
  702      623          1019      UUNET Technologies, Inc. 
  701      558          2004      UUNET Technologies, Inc. 
 3908      491           904      Supernet, Inc. 
  690      449           577      Merit Network 
 7066      380           475      Virginia Polytechnic Institut
  705      357           547      UUNET Technologies, Inc. 
 7018      341          1295      AT&T 
 7843      300           500      Adelphia Corp. 
 7046      282           644      UUNET Technologies, Inc. 
  209      269           590      Qwest 
    1      257           812      GENUITY 
 7029      247           262      Alltel Information Services, 
 6197      245           340      BellSouth Network Solutions, 
11371      245           292      Rhythms NetConnections 
 3301      238           398      TeliaNet Sweden
 6198      232           319      BellSouth Network Solutions, 
 6517      219           241      Yipes Communications, Inc. 
18566      218           222      Covad Communications 
 3549      213           515      Global Crossing 
 1239      210           819      Sprint 

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

   4:3         9:1        12:508      13:10       15:2        17:6      
  20:2        24:779      25:1        32:41       38:8        40:6      
  44:1        57:13       61:238      62:202      63:1933     64:1233   
  65:1514     66:905      67:80       68:19       80:237      81:24     
 128:61      129:139     130:23      131:47      132:11      133:3      
 134:118     135:8       136:245     137:91      138:150     139:57     
 140:174     141:119     142:77      143:38      144:152     145:11     
 146:174     147:138     148:203     149:92      150:39      151:97     
 152:266     153:33      154:14      155:105     156:75      157:132    
 158:69      159:128     160:18      161:68      162:148     163:96     
 164:273     165:139     166:229     167:170     168:117     169:58     
 170:349     171:2       192:5508    193:2381    194:2124    195:965    
 196:437     198:3709    199:3229    200:2567    202:3155    203:4591   
 204:3253    205:2166    206:2581    207:2712    208:2658    209:2744   
 210:597     211:224     212:932     213:624     214:9       215:19     
 216:3005    217:461     218:28     

End of report
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