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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 Sun 18 Aug, 2002

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

BGP routing table entries examined:                            113127
    Prefixes after maximum aggregation:                         73580
    Unique aggregates announced to Internet:                    54864
Total ASes present in the Internet Routing Table:               13472
Origin-only ASes present in the Internet Routing Table:         11662
Origin ASes announcing only one prefix:                          5192
Transit ASes present in the Internet Routing Table:              1810
Transit-only ASes present in the Internet Routing Table:           54
Average AS path length visible in the Internet Routing Table:     5.3
    Max AS path length visible:                                    21
Illegal AS announcements present in the Routing Table:              1
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    35
Number of addresses announced to Internet:                 1183053988
    Equivalent to 70 /8s, 131 /16s and 248 /24s
    Percentage of available address space announced:             31.9
    Percentage of allocated address space announced:             58.5
    Percentage of available address space allocated:             54.6
Total number of prefixes smaller than registry allocations:     45693

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

Prefixes being announced by APNIC Region ASes:                  18778
    Total APNIC prefixes after maximum aggregation:             11084
Prefixes being announced from the APNIC address blocks:         17432
    Unique aggregates announced from the APNIC address blocks:  10655
APNIC Region origin ASes present in the Internet Routing Table:  1578
APNIC Region origin ASes announcing only one prefix:              515
APNIC Region transit ASes present in the Internet Routing Table:  277
Average APNIC Region AS path length visible:                      5.2
    Max APNIC Region AS path length visible:                       11
Number of APNIC addresses announced to Internet:             92715872
    Equivalent to 5 /8s, 134 /16s and 187 /24s
    Percentage of available APNIC address space announced:       61.0

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 220/7

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

Prefixes being announced by ARIN Region ASes:                   75146
    Total ARIN prefixes after maximum aggregation:              47922
Prefixes being announced from the ARIN address blocks:          53842
    Unique aggregates announced from the ARIN address blocks:   18108
ARIN Region origin ASes present in the Internet Routing Table:   7914
ARIN Region origin ASes announcing only one prefix:              2554
ARIN Region transit ASes present in the Internet Routing Table:   777
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        18
Number of ARIN addresses announced to Internet:             190862656
    Equivalent to 11 /8s, 96 /16s and 85 /24s
    Percentage of available ARIN address space announced:        66.9

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

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

Prefixes being announced by RIPE Region ASes:                   19203
    Total RIPE prefixes after maximum aggregation:              14574
Prefixes being announced from the RIPE address blocks:          15952
    Unique aggregates announced from the RIPE address blocks:   10501
RIPE Region origin ASes present in the Internet Routing Table:   3926
RIPE Region origin ASes announcing only one prefix:              2123
RIPE Region transit ASes present in the Internet Routing Table:   745
Average RIPE Region AS path length visible:                       5.8
    Max RIPE Region AS path length visible:                        21
Number of RIPE addresses announced to Internet:             113196544
    Equivalent to 6 /8s, 191 /16s and 62 /24s
    Percentage of available RIPE address space announced:        75.0

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
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     1212       1189         885   Telstra Pty Ltd
 4538      626       1312          28   China Education and Research 
  703      415        377         323   UUNET
 2907      362       1815         341   SINET Japan
 2764      358        358         329   connect.com.au pty ltd
 7474      315        292         211   Optus Communications Pty Ltd
 4134      299       2183         102   Data Communications Bureau
 4755      286        143          75   Videsh Sanchar Nigam Ltd. Aut
17557      269         20          96   Pakistan Telecom
 4766      249       1506         156   Korea Internet Exchange for "
 4814      231         79          14   China Telecom (Group)
17676      187       2914          34   XTAGE CORPORATION
 9583      180         32           5   Satyam Infoway Ltd.,
 9443      171         45          68   Primus Telecommunications
 9768      144        385          74   Korea Telecom
 7657      132         22          91   The Internet Group Limited
 9800      121        187          23   CHINA UNICOM
 4713      114       1009         105   NTT Communications Corporatio
 4739      112         56         103   Commerical Internet eXchange 
 9498      104          8          28   BHARTI BT INTERNET LTD.

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      894       2446         751   UUNET - Commercial IP service
 3301      396        923         343   TeliaNet Sweden
 5515      320        783         180   Sonera Solution Autonomous Sy
 3215      291        641         180   France Telecom Transpac
 3320      246       1964         212   Deutsche Telekom AG
  680      237       2150         234   DFN-IP service G-WiN
 5400      212         85         101   BT Ignite European Backbone
 1257      207        446         202   SWIPnet Swedish IP Network
  719      182        306         128   LANLINK autonomous system
  786      177       1873         177   The JANET IP Service
 8708      144         40         140   Romania Data Systems S.A.
 3303      142        548         141   Swisscom Ltd
 2856      126        786         116   BTnet UK Regional network
12302      125         18          32   MobiFon S.A.
 3246      111        317         106   Song Networks
 5511      110        192          88   France Telecom
 3233      107         10           9   RNC - Romanian Natioanal R&D 
 3269      106        658          63   TELECOM ITALIA
 2874      102         85          39   Global One Services AB
 8220      100        166          96   COLT Internet - International

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1797       9127        1364   UUNET Technologies, Inc. 
 7018     1301       7450         931   AT&T 
 3908     1014       1659         493   Supernet, Inc. 
 1239      822       3224         645   Sprint 
  852      724       1175         450   Telus Advanced Communications
    1      672       8040         433   GENUITY 
 7843      646        373         259   Adelphia Corp. 
 7046      623        882         314   UUNET Technologies, Inc. 
 7132      595        663         137   Southwestern Bell Internet Se
 4323      551        450         172   Time Warner Communications, I
  690      523         76         329   Merit Network 
  209      508       2057         344   Qwest 
 2548      468       1162         280   Business Internet, Inc. 
 3549      430        806         308   Global Crossing 
 6197      381        611          37   BellSouth Network Solutions, 
15290      376        297         191   AT&T Canada IES 
 2914      361       2074         361   Verio, Inc. 
 6347      348        370          76   SAVVIS Communications Corpora
 4355      337        279          72   EarthLink, Inc. 
 6198      317        158         203   BellSouth Network Solutions, 

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

  ASN   No of nets  Net Savings Description
 4538       626         598      China Education and Research 
 3908      1014         521      Supernet, Inc. 
 7132       595         458      Southwestern Bell Internet Se
 7843       646         387      Adelphia Corp. 
 4323       551         379      Time Warner Communications, I
 7018      1301         370      AT&T 
 6197       381         344      BellSouth Network Solutions, 
 1221      1212         327      Telstra Pty Ltd
 7046       623         309      UUNET Technologies, Inc. 
 4151       303         287      USDA 
  852       724         274      Telus Advanced Communications
 6347       348         272      SAVVIS Communications Corpora
 4355       337         265      EarthLink, Inc. 
18566       247         243      Covad Communications 
    1       672         239      GENUITY 
 4814       231         217      China Telecom (Group)
 4755       286         211      Videsh Sanchar Nigam Ltd. Aut
 1580       212         200      ANOSCEUR 
 4134       299         197      Data Communications Bureau
  690       523         194      Merit Network 

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

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

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 
158.0.0.0/13           568     DISO-UNRRA 
164.233.0.0/16        6020     DISA NETWORK SERVICES 
192.5.154.0/24       16588     Spider Web Hosting Solutions 
192.44.0.0/19          702     UUNET - Commercial IP service
192.58.92.0/24       19548     Adelphia Business Solutions 
192.72.0.0/18         4780     Digital United Inc.
192.72.0.0/16         4780     Digital United Inc.
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
192.91.198.0/24       2568     CTS Network Services 
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T 
192.136.79.0/24        719     LANLINK autonomous system
192.136.86.0/24        719     LANLINK autonomous system
192.136.87.0/24        719     LANLINK autonomous system
192.136.88.0/24        719     LANLINK autonomous system
192.136.136.0/24      7046     UUNET Technologies, Inc. 
192.136.136.0/22       568     DISO-UNRRA 
192.139.62.0/24       6539     GT Group Telecom Services Cor
192.140.0.0/16        5511     France Telecom
192.153.136.0/21       568     DISO-UNRRA 
192.156.0.0/19         568     DISO-UNRRA 
192.156.164.0/24     19548     Adelphia Business Solutions 
192.172.0.0/19         568     DISO-UNRRA 
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        /8:18       /9:6       /10:7       /11:12      /12:37      
/13:85      /14:233     /15:420     /16:7280    /17:1467    /18:2675    
/19:7775    /20:7539    /21:5215    /22:7935    /23:9568    /24:62402   
/25:152     /26:138     /27:57      /28:53      /29:30      /30:5       
/31:0       /32:18      

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

  ASN   No of nets  Total ann.   Description
 3908      600          1014      Supernet, Inc. 
  702      543           894      UUNET - Commercial IP service
  701      501          1797      UUNET Technologies, Inc. 
  690      469           523      Merit Network 
 7843      445           646      Adelphia Corp. 
 7018      372          1301      AT&T 
 7046      301           623      UUNET Technologies, Inc. 
 6197      266           381      BellSouth Network Solutions, 
 6198      244           317      BellSouth Network Solutions, 
18566      243           247      Covad Communications 
 3301      234           396      TeliaNet Sweden
 3215      223           291      France Telecom Transpac
 1239      222           822      Sprint 
 7066      204           301      Virginia Polytechnic Institut
 1580      199           212      ANOSCEUR 
 4355      194           337      EarthLink, Inc. 
 4323      190           551      Time Warner Communications, I
  209      189           508      Qwest 
 5400      186           212      BT Ignite European Backbone
11492      185           189      Cable One 

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

   3:1         4:3        12:533      13:10       15:2        17:6      
  20:4        24:829      25:1        32:41       38:9        40:6      
  44:1        57:14       61:328      62:235      63:1863     64:1231   
  65:1444     66:1001     67:97       68:86       80:263      81:44     
 128:65      129:123     130:21      131:62      132:11      133:2      
 134:69      135:9       136:426     137:96      138:149     139:63     
 140:154     141:47      142:61      143:48      144:140     145:17     
 146:236     147:143     148:240     149:79      150:40      151:58     
 152:268     153:36      154:11      155:114     156:71      157:108    
 158:65      159:134     160:20      161:72      162:123     163:79     
 164:84      165:129     166:107     167:263     168:282     169:60     
 170:195     171:3       192:5378    193:2346    194:2064    195:799    
 196:412     198:3574    199:3132    200:2593    202:3351    203:4718   
 204:3228    205:2135    206:2444    207:2470    208:2592    209:2699   
 210:616     211:244     212:858     213:714     214:8       215:19     
 216:2850    217:489     218:33      219:1      

End of report
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