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[bgp-stats] Routing Table Report - Japan view



Routing Table Report   04:00 +10GMT Sun 22 Feb, 2004

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

BGP routing table entries examined:                            133576
    Prefixes after maximum aggregation:                         81742
    Unique aggregates announced to Internet:                    64310
Total ASes present in the Internet Routing Table:               16689
Origin-only ASes present in the Internet Routing Table:         14475
Origin ASes announcing only one prefix:                          6676
Transit ASes present in the Internet Routing Table:              2214
Transit-only ASes present in the Internet Routing Table:           68
Average AS path length visible in the Internet Routing Table:     4.8
    Max AS path length visible:                                    20
Illegal AS announcements present in the Routing Table:              3
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from unallocated address space:           14
Number of addresses announced to Internet:                 1288268836
    Equivalent to 76 /8s, 201 /16s and 108 /24s
    Percentage of available address space announced:             34.8
    Percentage of allocated address space announced:             59.7
    Percentage of available address space allocated:             58.2
Total number of prefixes smaller than registry allocations:     59266

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

Prefixes being announced by APNIC Region ASes:                    24866
    Total APNIC prefixes after maximum aggregation:               13189
Prefixes being announced from the APNIC address blocks:           23282
    Unique aggregates announced from the APNIC address blocks:    13169
APNIC Region origin ASes present in the Internet Routing Table:    2003
APNIC Region origin ASes announcing only one prefix:                600
APNIC Region transit ASes present in the Internet Routing Table:    322
Average APNIC Region AS path length visible:                        4.8
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              136550272
    Equivalent to 8 /8s, 35 /16s and 151 /24s
    Percentage of available APNIC address space announced:       73.6

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:                     77945
    Total ARIN prefixes after maximum aggregation:                48225
Prefixes being announced from the ARIN address blocks:            60330
    Unique aggregates announced from the ARIN address blocks:     20855
ARIN Region origin ASes present in the Internet Routing Table:     8966
ARIN Region origin ASes announcing only one prefix:                3166
ARIN Region transit ASes present in the Internet Routing Table:     879
Average ARIN Region AS path length visible:                         4.6
    Max ARIN Region AS path length visible:                          17
Number of ARIN addresses announced to Internet:               218215008
    Equivalent to 13 /8s, 1 /16s and 178 /24s
    Percentage of available ARIN address space announced:          72.3

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:                     24053
    Total RIPE prefixes after maximum aggregation:                17433
Prefixes being announced from the RIPE address blocks:            20915
    Unique aggregates announced from the RIPE address blocks:     13860
RIPE Region origin ASes present in the Internet Routing Table:     5191
RIPE Region origin ASes announcing only one prefix:                2783
RIPE Region transit ASes present in the Internet Routing Table:     893
Average RIPE Region AS path length visible:                         5.5
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               152045184
    Equivalent to 9 /8s, 16 /16s and 6 /24s
    Percentage of available RIPE address space announced:          69.7

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:                    5539
    Total LACNIC prefixes after maximum aggregation:               2216
Prefixes being announced from the LACNIC address blocks:           5199
    Unique aggregates announced from the LACNIC address blocks:    3269
LACNIC Region origin ASes present in the Internet Routing Table:    369
LACNIC Region origin ASes announcing only one prefix:               101
LACNIC Region transit ASes present in the Internet Routing Table:    71
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        12
Number of LACNIC addresses announced to Internet:              14209280
    Equivalent to 0 /8s, 216 /16s and 209 /24s
    Percentage of available LACNIC address space announced:        42.3

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

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

Prefixes being announced by AfriNIC Region ASes:                   1171
    Total AfriNIC prefixes after maximum aggregation:               679
Prefixes being announced from the AfriNIC address blocks:           743
    Unique aggregates announced from the AfriNIC address blocks:    557
AfriNIC Region origin ASes present in the Internet Routing Table:    92
AfriNIC Region origin ASes announcing only one prefix:               26
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:                       15
Number of AfriNIC addresses announced to Internet:              1766144
    Equivalent to 0 /8s, 26 /16s and 243 /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      892       1084         641   Telstra Pty Ltd
 4134      669       2491         118   Data Communications Bureau
 4766      427       2910         242   Korea Internet Exchange for "
 4755      361        130          58   Videsh Sanchar Nigam Ltd. Aut
 9583      351         42          24   Satyam Infoway Ltd.,
 2907      350       1844         327   SINET Japan
 9443      349         70          83   Primus Telecommunications
  703      339        374         262   UUNET
17557      335         24         159   Pakistan Telecom
 2764      298        274         243   connect.com.au pty ltd
17676      296       4364          37   XTAGE CORPORATION
 7474      270        304         210   Optus Communications Pty Ltd
 9942      230         70         132   COMindico Australia
 9929      227        155          30   China Netcom Corp.
 9800      215        347          55   CHINA UNICOM
 9498      195         30          36   BHARTI BT INTERNET LTD.
 9304      169        159          23   Hutchison Telecom (HK)
 4837      157       1539         101   chinanet IDC center beijing n
 4739      150         60         137   Commerical Internet eXchange 
17964      150        119          59   Beijing Dian-Xin-Tong Network

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1397       7225         980   AT&T 
  701     1345       8612         961   UUNET Technologies, Inc. 
 1239      937       3079         654   Sprint 
 3356      805      10948         655   Level 3 Communications, LLC 
 6197      733        443         270   BellSouth Network Solutions, 
  209      707       3531         498   Qwest 
18566      689        192           9   Covad Communications 
 4323      687        543         201   Time Warner Communications, I
20115      610        342         345   Charter Communications 
 6198      546        354         196   BellSouth Network Solutions, 
 7843      508        580         130   Adelphia Corp. 
  852      504       1124         400   Telus Advanced Communications
 7066      499        207         271   Virginia Polytechnic Institut
 7132      462       7706         317   Southwestern Bell Internet Se
 2386      428        578         226   AT&T Data Communications Serv
  690      397         58         267   Merit Network 
 4355      397        323         103   EarthLink, Inc. 
19029      388        168         248   New Edge Networks 
27364      382         28          23   Armstrong Cable Services 
  376      381        359         114   Reseau Interordinateurs Scien

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      680       2067         566   UUNET - Commercial IP service
 3301      336       1178         315   TeliaNet Sweden
 3320      286       1965         234   Deutsche Telekom AG
 8220      268        411         255   COLT Internet - International
  680      242       2027         238   DFN-IP service G-WiN
  719      234        288         105   LANLINK autonomous system
 1257      229        506         190   SWIPnet Swedish IP Network
13083      216         51           8   Mannesmann Datenverarbeitung 
 3246      188        431         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      165        185         108   France Telecom Transpac's Tra
 3215      163        804          75   France Telecom Transpac
 5400      149        223         132   BT Ignite European Backbone
 3303      137        620         137   Swisscom Ltd
 6746      127         19         112   Dynamic Network Technologies,
 3269      125       1037          65   TELECOM ITALIA
12302      122         18          29   MobiFon S.A.
 2856      117       1294         107   BTnet UK Regional network

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      354        121          61   ImpSat
 8151      262        384         126   UniNet S.A. de C.V. 
11172      206         77          43   Servicios Alestra S.A de C.V 
16814      156         11           6   NSS, S.A. 
 6503      139        204          93   AVANTEL, S.A. 
 7303      139         51          31   Telecom Argentina Stet-France
 6505      131         90          91   Global One Communicaoes Ltda 
 6147      123         78          20   Telefonica Del Peru 
11556       88         73          25   Cable-Wireless Panama 
11992       79         25          29   Integrated Systems 
15311       78         18          38   Telefonica Empresas 
 6535       77          5          19   Chilesat Servicios  Empresari
 4270       70         18           9   Red de Interconexion Universi
 7080       66          4           2   Electronica y Comunicaciones 
14420       63          4          25   ANDINATEL S.A. 
27699       62        168          15   TELECOMUNICACOES DE SAO PAULO
 5639       61          7          12   Telecommunications Services o
10292       61          6          28   TELECOMMUNICATIONS OF JAMAICA
11311       61          6          25   Sinectis S.A. 
 1916       60        247          40   Fundacao de Amparo a Pesquisa

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      250        632         219   The Internet Solution 
 5536      104          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       32          2           1   ARN Network
 9129       30          3           4   UUNET Kenya
16637       25          9          18   Johnnic e-Ventures 
 5713       24         93          22   Telkom SA Ltd 
24835       24         18           6   RAYA Telecom - Egypt
 6713       22         38           9   Itissalat Al-MAGHRIB
12455       22          4           2   Jambonet Autonomous system
 8524       19          2           4   AUCEGYPT Autonomous System
10798       18          1          12   Standard Bank of South Africa
15706       16          2           3   Sudatel Internet Exchange Aut
15808       16          1           7   Communication Solutions Ltd i
12258       15          3          10   Vodacom Internet Company 
17148       14          1           8   First National Bank 
 8346       13          6          12   SONATEL-AS Autonomous System

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

  ASN   No of nets  Net Savings Description
18566       689         680      Covad Communications 
 4134       669         551      Data Communications Bureau
 4323       687         486      Time Warner Communications, I
 6197       733         463      BellSouth Network Solutions, 
  701      1345         384      UUNET Technologies, Inc. 
 7843       508         378      Adelphia Corp. 
27364       382         359      Armstrong Cable Services 
 6198       546         350      BellSouth Network Solutions, 
 5668       345         330      Century Telephone 
 9583       351         327      Satyam Infoway Ltd.,
22909       343         323      Comcast Cable Corporation 
22773       344         310      Cox Communications, Inc. Atla
 4755       361         303      Videsh Sanchar Nigam Ltd. Aut
 4355       397         294      EarthLink, Inc. 
 6140       354         293      ImpSat
 1239       937         283      Sprint 
  376       381         267      Reseau Interordinateurs Scien
 9443       349         266      Primus Telecommunications
20115       610         265      Charter Communications 
17676       296         259      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
 1877   UNALLOCATED   192.108.199.0/24      1876       Southern Methodist U
18412   UNALLOCATED   211.77.0.0/19         9674       Far EastTone Telecom

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      /12:59      
/13:106     /14:290     /15:504     /16:7574    /17:1898    /18:3479    
/19:8980    /20:9349    /21:6789    /22:9655    /23:11165   /24:72986   
/25:189     /26:286     /27:157     /28:28      /29:8       /30:16      
/31:0       /32:14      

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

  ASN   No of nets  Total ann.   Description
18566      672           689      Covad Communications 
 6197      574           733      BellSouth Network Solutions, 
 7018      499          1397      AT&T 
 3356      430           805      Level 3 Communications, LLC 
  702      415           680      UUNET - Commercial IP service
 6198      394           546      BellSouth Network Solutions, 
 7066      393           499      Virginia Polytechnic Institut
20115      380           610      Charter Communications 
  701      376          1345      UUNET Technologies, Inc. 
27364      375           382      Armstrong Cable Services 
  690      360           397      Merit Network 
 1239      331           937      Sprint 
 5668      304           345      Century Telephone 
19029      256           388      New Edge Networks 
 4766      254           427      Korea Internet Exchange for "
25844      244           244      Skadden, Arps, Slate, Meagher
 3320      234           286      Deutsche Telekom AG
 6386      223           249      bellsouth.net, inc. 
 6517      222           244      Yipes Communications, Inc. 
13609      220           260      Choice One Communications Inc

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

   4:3        12:781      13:1        15:6        16:1        17:3      
  20:6        24:842      32:84       38:50       40:26       44:2      
  55:1        56:1        57:13       61:375      62:467      63:1821   
  64:1861     65:1907     66:2388     67:276      68:612      69:407    
  80:471      81:226      82:83       83:6       128:140     129:261    
 130:46      131:78      132:16      134:172     135:16      136:186    
 137:108     138:150     139:40      140:160     141:135     142:106    
 143:48      144:79      145:37      146:285     147:75      148:332    
 149:84      150:123     151:62      152:215     153:60      154:1      
 155:130     156:66      157:50      158:148     159:141     160:48     
 161:49      162:374     163:71      164:326     165:162     166:96     
 167:211     168:179     169:106     170:294     171:8       192:5521   
 193:2580    194:2011    195:1329    196:523     198:3634    199:2949   
 200:3077    201:7       202:4449    203:5439    204:3007    205:1993   
 206:2259    207:2597    208:2385    209:2857    210:1094    211:463    
 212:901     213:1065    214:25      215:27      216:3326    217:842    
 218:139     219:98      220:172     221:18      222:5      

End of report