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[bgp-stats] Routing Table Report - Japan view



Routing Table Report   04:00 +10GMT Mon 26 Jan, 2004

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

BGP routing table entries examined:                            131999
    Prefixes after maximum aggregation:                         81106
    Unique aggregates announced to Internet:                    63659
Total ASes present in the Internet Routing Table:               16522
Origin-only ASes present in the Internet Routing Table:         14339
Origin ASes announcing only one prefix:                          6622
Transit ASes present in the Internet Routing Table:              2183
Transit-only ASes present in the Internet Routing Table:           67
Average AS path length visible in the Internet Routing Table:     5.0
    Max AS path length visible:                                    19
Illegal AS announcements present in the Routing Table:              8
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from unallocated address space:           14
Number of addresses announced to Internet:                 1280688228
    Equivalent to 76 /8s, 85 /16s and 192 /24s
    Percentage of available address space announced:             34.6
    Percentage of allocated address space announced:             59.3
    Percentage of available address space allocated:             58.2
Total number of prefixes smaller than registry allocations:     58341

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

Prefixes being announced by APNIC Region ASes:                  24470
    Total APNIC prefixes after maximum aggregation:             13098
Prefixes being announced from the APNIC address blocks:         22912
    Unique aggregates announced from the APNIC address blocks:  12983
APNIC Region origin ASes present in the Internet Routing Table:  1981
APNIC Region origin ASes announcing only one prefix:              593
APNIC Region transit ASes present in the Internet Routing Table:  314
Average APNIC Region AS path length visible:                      5.0
    Max APNIC Region AS path length visible:                       15
Number of APNIC addresses announced to Internet:            134737792
    Equivalent to 8 /8s, 7 /16s and 239 /24s
    Percentage of available APNIC address space announced:       72.6

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:                     77251
    Total ARIN prefixes after maximum aggregation:                47873
Prefixes being announced from the ARIN address blocks:            59811
    Unique aggregates announced from the ARIN address blocks:     20838
ARIN Region origin ASes present in the Internet Routing Table:     8886
ARIN Region origin ASes announcing only one prefix:                3136
ARIN Region transit ASes present in the Internet Routing Table:     853
Average ARIN Region AS path length visible:                         4.8
    Max ARIN Region AS path length visible:                          17
Number of ARIN addresses announced to Internet:               215335840
    Equivalent to 12 /8s, 213 /16s and 195 /24s
    Percentage of available ARIN address space announced:          71.3

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 - 26591, 26624 - 27647, 29695 - 30719
                       31744 - 32767
ARIN Address Blocks    24/8, 63/8, 64/6, 68/7, 70/8, 198/7, 204/6, 208/7
                       and 216/8

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

Prefixes being announced by RIPE Region ASes:                     23681
    Total RIPE prefixes after maximum aggregation:                17249
Prefixes being announced from the RIPE address blocks:            20508
    Unique aggregates announced from the RIPE address blocks:     13608
RIPE Region origin ASes present in the Internet Routing Table:     5132
RIPE Region origin ASes announcing only one prefix:                2764
RIPE Region transit ASes present in the Internet Routing Table:     899
Average RIPE Region AS path length visible:                         5.8
    Max RIPE Region AS path length visible:                          19
Number of RIPE addresses announced to Internet:               149677696
    Equivalent to 8 /8s, 235 /16s and 230 /24s
    Percentage of available RIPE address space announced:          68.6

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
                       30720 - 31743
RIPE Address Blocks    62/8, 80/6, 84/8, 188/8, 193/8, 194/7,
                       212/7 and 217/8

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

Prefixes being announced by LACNIC Region ASes:                    5446
    Total LACNIC prefixes after maximum aggregation:               2213
Prefixes being announced from the LACNIC address blocks:           5034
    Unique aggregates announced from the LACNIC address blocks:    3148
LACNIC Region origin ASes present in the Internet Routing Table:    367
LACNIC Region origin ASes announcing only one prefix:               104
LACNIC Region transit ASes present in the Internet Routing Table:    71
Average LACNIC Region AS path length visible:                       5.4
    Max LACNIC Region AS path length visible:                        13
Number of LACNIC addresses announced to Internet:              14045696
    Equivalent to 0 /8s, 214 /16s and 82 /24s
    Percentage of available LACNIC address space announced:        41.9

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

Emerging AfriNIC Region Analysis Summary
----------------------------------------

Prefixes being announced by AfriNIC Region ASes:                   1145
    Total AfriNIC prefixes after maximum aggregation:               673
Prefixes being announced from the AfriNIC address blocks:           736
    Unique aggregates announced from the AfriNIC address blocks:    569
AfriNIC Region origin ASes present in the Internet Routing Table:    91
AfriNIC Region origin ASes announcing only one prefix:               25
AfriNIC Region transit ASes present in the Internet Routing Table:   12
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:              1766656
    Equivalent to 0 /8s, 26 /16s and 245 /24s
    Percentage of available AfriNIC address space announced:       10.5

AfriNIC AS Blocks      <none>
AfriNIC Address Blocks 196/8

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 1221      905       1101         646   Telstra Pty Ltd
 4134      666       2457         116   Data Communications Bureau
 4766      408       2904         241   Korea Internet Exchange for "
 2907      363       1847         339   SINET Japan
 9443      344         69          79   Primus Telecommunications
  703      337        372         261   UUNET
17557      320         23         155   Pakistan Telecom
 9583      299         44          11   Satyam Infoway Ltd.,
17676      295       4348          38   XTAGE CORPORATION
 2764      288        289         237   connect.com.au pty ltd
 7474      271        305         213   Optus Communications Pty Ltd
 4538      249       1811          21   China Education and Research 
 4755      218        130          58   Videsh Sanchar Nigam Ltd. Aut
 9929      218        154          30   China Netcom Corp.
 9942      216         69         128   COMindico Australia
 9800      214        347          55   CHINA UNICOM
 9498      182         30          34   BHARTI BT INTERNET LTD.
17642      153         40         112   RequestDSL BGP AS# for Sydney
17964      151        117          58   Beijing Dian-Xin-Tong Network
 7633      148         23          40   Software Technology Parks of 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1406       8647         971   UUNET Technologies, Inc. 
 7018     1387       7014         962   AT&T 
 1239      946       3109         662   Sprint 
 3356      759      10925         604   Level 3 Communications, LLC 
  209      717       3533         505   Qwest 
 6197      697        401         235   BellSouth Network Solutions, 
 4323      687        544         204   Time Warner Communications, I
18566      685        192           9   Covad Communications 
20115      603        330         336   Charter Communications 
 6198      591        381         228   BellSouth Network Solutions, 
 7843      511        559         121   Adelphia Corp. 
 7066      503        207         271   Virginia Polytechnic Institut
  852      502       1124         399   Telus Advanced Communications
 7132      453       7417         311   Southwestern Bell Internet Se
 2386      419        544         221   AT&T Data Communications Serv
  690      398         58         268   Merit Network 
19029      395        169         252   New Edge Networks 
 4355      392        323         101   EarthLink, Inc. 
  376      383        359         114   Reseau Interordinateurs Scien
27364      382         28          23   Armstrong Cable Services 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      690       2074         572   UUNET - Commercial IP service
 3301      335       1174         316   TeliaNet Sweden
 3320      278       1972         229   Deutsche Telekom AG
 8220      269        410         254   COLT Internet - International
  680      241       2027         237   DFN-IP service G-WiN
  719      235        288         105   LANLINK autonomous system
 1257      224        504         190   SWIPnet Swedish IP Network
13083      215         51           8   Mannesmann Datenverarbeitung 
 3246      188        425         186   Song Networks
  786      175       1826         175   The JANET IP Service
 8708      171        111         162   Romania Data Systems S.A.
 5515      169        762         135   Sonera Solution Autonomous Sy
25186      168        201         109   France Telecom Transpac's Tra
 3215      153        791          70   France Telecom Transpac
 5400      140        224         129   BT Ignite European Backbone
 3303      138        557         138   Swisscom Ltd
12302      125         18          32   MobiFon S.A.
 3269      122       1004          64   TELECOM ITALIA
 2856      118       1294         108   BTnet UK Regional network
 6746      105         17          94   Dynamic Network Technologies,

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      357        121          66   ImpSat
 8151      245        366         127   UniNet S.A. de C.V. 
11172      206         77          45   Servicios Alestra S.A de C.V 
16814      155         10           5   NSS, S.A. 
 7303      138         51          29   Telecom Argentina Stet-France
 6505      132         90          92   Global One Communicaoes Ltda 
 6503      127        204          93   AVANTEL, S.A. 
 6147      124         78          20   Telefonica Del Peru 
11340      110          3          31   Red Universitaria Nacional 
15311       78         18          38   Telefonica Empresas 
 6535       77          5          19   Chilesat Servicios  Empresari
 4270       71         18           9   Red de Interconexion Universi
11992       68         25          29   Integrated Systems 
 7080       66          4           2   Electronica y Comunicaciones 
11311       66          7          22   Sinectis S.A. 
27699       62        168          15   TELECOMUNICACOES DE SAO PAULO
10292       61          6          28   TELECOMMUNICATIONS OF JAMAICA
14420       61          4          23   ANDINATEL S.A. 
 1916       59        247          39   Fundacao de Amparo a Pesquisa
 7738       59        218          13   Telecomunicacoes da Bahia S.A

AfriNIC Region per AS prefix count summary
------------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      249        632         218   The Internet Solution 
 5536      103          8           3   Internet Egypt Network
 2018       94        297          92   Tertiary Education Network 
 2905       90        272          80   The Internetworking Company o
 2561       58          6           3   Egyptian Universities Network
11845       36          9          11   Data Pro Business Online 
 3208       33          2           1   ARN Network
16637       26          9          19   Johnnic e-Ventures 
 9129       25          3           4   UUNET Kenya
 5713       24         93          22   Telkom SA Ltd 
24835       23         18           6   RAYA Telecom - Egypt
12455       22          4           2   Jambonet Autonomous system
 6713       21         38           8   Itissalat Al-MAGHRIB
 8524       18          2           4   AUCEGYPT Autonomous System
10798       18          1          12   Standard Bank of South Africa
15706       16          2           3   Sudatel Internet Exchange Aut
12258       15          3          10   Vodacom Internet Company 
17148       14          1           8   First National Bank 
 2609       12         10           3   Tunisia BackBone AS
 8346       12          6          12   SONATEL-AS Autonomous System

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

  ASN   No of nets  Net Savings Description
18566       685         676      Covad Communications 
 4134       666         550      Data Communications Bureau
 4323       687         483      Time Warner Communications, I
 6197       697         462      BellSouth Network Solutions, 
 7018      1387         425      AT&T 
 7843       511         390      Adelphia Corp. 
 6198       591         363      BellSouth Network Solutions, 
27364       382         359      Armstrong Cable Services 
22909       332         315      Comcast Cable Corporation 
 5668       322         306      Century Telephone 
22773       332         301      Cox Communications, Inc. Atla
 4355       392         291      EarthLink, Inc. 
 6140       357         291      ImpSat
 9583       299         288      Satyam Infoway Ltd.,
 1239       946         284      Sprint 
  376       383         269      Reseau Interordinateurs Scien
20115       603         267      Charter Communications 
 9443       344         265      Primus Telecommunications
 1221       905         259      Telstra Pty Ltd
17676       295         257      XTAGE CORPORATION

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

Bad AS  Designation  Network              Transit AS  Description
65412   PRIVATE       64.70.42.0/24         3561       Cable & Wireless USA
64512   PRIVATE       131.95.1.240/28      16430       University of Southe
64198   RESERVED      192.107.195.0/24     22767       NASA Earth Science D
 1877   UNALLOCATED   192.108.199.0/24      1876       Southern Methodist U
64198   RESERVED      198.10.49.0/24       22767       NASA Earth Science D
64512   PRIVATE       204.70.1.0/24         3561       Cable & Wireless USA
23861   UNALLOCATED   210.93.46.0/24        3786       DACOM Corporation
23861   UNALLOCATED   210.93.47.0/24        3786       DACOM Corporation

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

Network            Origin AS  Description
132.0.0.0/10           568     DISO-UNRRA 
137.0.0.0/13           568     DISO-UNRRA 
158.0.0.0/13           568     DISO-UNRRA 
192.43.230.0/24       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
192.84.205.0/24        719     LANLINK autonomous system
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T 
192.136.79.0/24        719     LANLINK autonomous system
192.172.0.0/19         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        /8:19       /9:4       /10:6       /11:15      /12:57      
/13:105     /14:282     /15:502     /16:7538    /17:1847    /18:3449    
/19:8882    /20:9354    /21:6699    /22:9470    /23:11025   /24:72004   
/25:202     /26:290     /27:169     /28:27      /29:7       /30:37      
/31:0       /32:9       

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

  ASN   No of nets  Total ann.   Description
18566      668           685      Covad Communications 
 6197      547           697      BellSouth Network Solutions, 
 7018      507          1387      AT&T 
 6198      442           591      BellSouth Network Solutions, 
  701      425          1406      UUNET Technologies, Inc. 
  702      419           690      UUNET - Commercial IP service
 7066      397           503      Virginia Polytechnic Institut
 3356      395           759      Level 3 Communications, LLC 
20115      383           603      Charter Communications 
27364      375           382      Armstrong Cable Services 
  690      361           398      Merit Network 
 1239      332           946      Sprint 
 5668      285           322      Century Telephone 
19029      260           395      New Edge Networks 
25844      244           244      Skadden, Arps, Slate, Meagher
 4766      235           408      Korea Internet Exchange for "
 3320      226           278      Deutsche Telekom AG
 6517      221           245      Yipes Communications, Inc. 
 6386      220           246      bellsouth.net, inc. 
 4355      215           392      EarthLink, Inc. 

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

   4:3        12:759      13:1        15:6        16:1        17:3      
  20:7        24:874      32:83       38:44       40:26       44:2      
  55:1        56:1        57:13       61:353      62:457      63:1821   
  64:1827     65:1822     66:2250     67:261      68:606      69:371    
  80:454      81:204      82:78      128:144     129:262     130:70     
 131:79      132:17      134:176     135:16      136:128     137:115    
 138:145     139:40      140:157     141:132     142:104     143:48     
 144:83      145:39      146:290     147:74      148:291     149:85     
 150:122     151:61      152:215     153:61      154:1       155:130    
 156:66      157:55      158:136     159:145     160:46      161:51     
 162:368     163:67      164:330     165:165     166:105     167:218    
 168:177     169:96      170:303     171:8       192:5510    193:2530   
 194:2005    195:1321    196:517     198:3641    199:2829    200:2984   
 201:7       202:4349    203:5386    204:3028    205:2009    206:2270   
 207:2585    208:2434    209:2888    210:1033    211:422     212:909    
 213:997     214:23      215:25      216:3365    217:815     218:114    
 219:83      220:157     221:18      222:1      

End of report