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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 Tue 15 Jan, 2002

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

BGP routing table entries examined:                            107846
    Prefixes after maximum aggregation:                         72059
    Unique aggregates announced to Internet:                    52255
Total ASes present in the Internet Routing Table:               12368
Origin-only ASes present in the Internet Routing Table:         10725
Origin ASes announcing only one prefix:                          4645
Transit ASes present in the Internet Routing Table:              1643
Transit-only ASes present in the Internet Routing Table:           55
Average AS path length visible in the Internet Routing Table:     5.3
    Max AS path length visible:                                    16
Illegal AS announcements present in the Routing Table:              2
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    15
Number of addresses announced to Internet:                 1161554380
    Equivalent to 69 /8s, 59 /16s and 233 /24s
    Percentage of available address space announced:             31.3
    Percentage of allocated address space announced:             59.3
    Percentage of available address space allocated:             52.8
Total number of prefixes smaller than registry allocations:     72062

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

Prefixes being announced by APNIC Region ASes:                  17275
    Total APNIC prefixes after maximum aggregation:             10638
Prefixes being announced from the APNIC address blocks:         15763
    Unique aggregates announced from the APNIC address blocks:   9791
APNIC Region origin ASes present in the Internet Routing Table:  1429
APNIC Region origin ASes announcing only one prefix:              461
APNIC Region transit ASes present in the Internet Routing Table:  244
Average APNIC Region AS path length visible:                      5.3
    Max APNIC Region AS path length visible:                       14
Number of APNIC addresses announced to Internet:             78598720
    Equivalent to 4 /8s, 175 /16s and 82 /24s
    Percentage of available APNIC address space announced:       58.1

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:                   72660
    Total ARIN prefixes after maximum aggregation:              47504
Prefixes being announced from the ARIN address blocks:          51925
    Unique aggregates announced from the ARIN address blocks:   17101
ARIN Region origin ASes present in the Internet Routing Table:   7329
ARIN Region origin ASes announcing only one prefix:              2264
ARIN Region transit ASes present in the Internet Routing Table:   747
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        16
Number of ARIN addresses announced to Internet:             183400708
    Equivalent to 10 /8s, 238 /16s and 121 /24s
    Percentage of available ARIN address space announced:        68.3

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
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:                   17910
    Total RIPE prefixes after maximum aggregation:              13917
Prefixes being announced from the RIPE address blocks:          14642
    Unique aggregates announced from the RIPE address blocks:    9759
RIPE Region origin ASes present in the Internet Routing Table:   3554
RIPE Region origin ASes announcing only one prefix:              1920
RIPE Region transit ASes present in the Internet Routing Table:   642
Average RIPE Region AS path length visible:                       5.8
    Max RIPE Region AS path length visible:                        15
Number of RIPE addresses announced to Internet:             105858560
    Equivalent to 6 /8s, 79 /16s and 70 /24s
    Percentage of available RIPE address space announced:        70.1

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     1331       1240         983   Telstra Pty Ltd
 4538      448       1098          14   China Education and Research 
 2764      398        378         373   connect.com.au pty ltd
  703      397        337         304   UUNET Technologies, Inc. 
 2907      393       1908         363   SINET Japan
 7474      314        286         205   Optus Communications Pty Ltd
 4755      311        114          99   Videsh Sanchar Nigam Ltd. Aut
 4134      268       1858         100   Data Communications Bureau
 4766      198       1380         145   Korea Internet Exchange for "
17557      183         14          84   Pakistan Telecom
 9443      172         45          68   Primus Telecommunications
 7539      146        137         145   TANet2, sponsored by NSC, TAI
 4740      145         34         119   OzEmail ISP
 9583      145         32           5   Satyam Infoway Ltd.,
 9768      145        381          88   Korea Telecom
 1659      144        924          34   Taiwan Academic Network (TANe
 7657      123         21          83   The Internet Group Limited
17676      121       1920           7   XTAGE CORPORATION
 4780      117        186          40   Digital United Inc.
 4713      115        894         102   NTT Communications Corporatio

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702     1080       2618         856   UUNET Technologies, Inc. 
 3301      397        924         350   TeliaNet Sweden
 1257      255        489         249   SWIPnet Swedish IP Network
  680      233       2149         231   DFN-IP service G-WiN
 3215      233        562         152   France Telecom / &Equant
 5515      219        705         176   Sonera Finland Autonomous Sys
 3320      191       1961         169   Deutsche Telekom AG
  786      182       1874         182   The JANET IP Service
  719      164        289         118   LANLINK autonomous system
 8708      150         20         139   Romania Data Systems S.A.
 5400      147         60          86   Concert European Core Network
 5549      142         78          65   Nextra Deutschland GmbH + Co.
 2856      136        777         125   BTnet UK Regional network
 3303      127        576         125   Swisscom Ltd
 3269      115        663          70   TELECOM ITALIA
12302      113          7          37   MobiFon S.A.
 8297      110         37          62   Teleglobe Autonomous System i
  517      106        229         104   KPNQwest Germany GmbH
 1290       97        412          72   PSINet UK Ltd.
 1267       92       1471          42   Infostrada S.p.A.

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     2153       8810        1538   UUNET Technologies, Inc. 
 7018     1169       7512         910   AT&T 
    1      862       8381         634   BBN Planet 
 3908      802       1639         474   Supernet, Inc. 
 1239      780       3159         602   Sprint 
 3967      749        360         320   Exodus Communication 
 7046      668        837         434   UUNET Technologies, Inc. 
 4323      614        412         216   Time Warner Communications, I
  852      581        979         383   Telus Advanced Communications
  690      546         77         322   Merit Network 
  209      510       1876         296   Qwest 
  705      492        445         306   UUNET Technologies, Inc. 
 2914      459       2210         428   Verio, Inc. 
 7132      420        484         159   Southwestern Bell Internet Se
 4293      418         90         310   Cable & Wireless USA 
 3549      415        831         210   Global Crossing 
 2149      393        214         329   Performance Systems, Inc. 
 3561      367       2204         321   Cable & Wireless USA 
 3741      350        730         239   The Internet Solution 
  577      349        604         219   Bell Advanced Communications 

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

  ASN   No of nets  Net Savings Description
 4538       448         434      China Education and Research 
 3967       749         429      Exodus Communication 
 4323       614         398      Time Warner Communications, I
 1221      1331         348      Telstra Pty Ltd
 3908       802         328      Supernet, Inc. 
 4151       337         321      USDA 
11371       278         271      Rhythms NetConnections 
 7132       420         261      Southwestern Bell Internet Se
 7018      1169         259      AT&T 
 6347       324         241      SAVVIS Communications Corpora
 7046       668         234      UUNET Technologies, Inc. 
    1       862         228      BBN Planet 
  702      1080         224      UUNET Technologies, Inc. 
  690       546         224      Merit Network 
  209       510         214      Qwest 
 4755       311         212      Videsh Sanchar Nigam Ltd. Aut
 3549       415         205      Global Crossing 
 4355       229         199      EarthLink, Inc. 
  852       581         198      Telus Advanced Communications
 6517       224         195      Yipes Communications, Inc. 

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

Bad AS  Designation  Network              Transit AS  Description
64610   PRIVATE       64.198.32.0/24       10514       Splitrock Services I
 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         400     Headquarters Standard Systems
135.0.0.0/13         10455     Lucent Technologies 
137.0.0.0/13           568     DISO-UNRRA 
138.94.0.0/16            1     BBN Planet 
144.7.0.0/16           701     UUNET Technologies, Inc. 
153.34.0.0/15          701     UUNET Technologies, Inc. 
153.36.0.0/14          701     UUNET Technologies, Inc. 
154.150.0.0/16        6494     IDCI 
158.0.0.0/13           568     DISO-UNRRA 
164.233.0.0/16        6020     DISA NETWORK SERVICES 
164.235.0.0/16        6025     US DOD NIC Unregistered
191.9.200.0/24        1290     PSINet UK Ltd.
201.115.100.0/24      7018     AT&T 

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      /12:38      
/13:92      /14:231     /15:393     /16:7147    /17:1408    /18:2477    
/19:7250    /20:6597    /21:4867    /22:7274    /23:9024    /24:60075   
/25:227     /26:225     /27:129     /28:92      /29:74      /30:133     
/31:0       /32:50      

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

  ASN   No of nets  Total ann.   Description
  701     1377          2153      UUNET Technologies, Inc. 
 1221     1184          1331      Telstra Pty Ltd
  702      701          1080      UUNET Technologies, Inc. 
 7018      612          1169      AT&T 
 3967      564           749      Exodus Communication 
 3908      560           802      Supernet, Inc. 
  690      542           546      Merit Network 
 4323      508           614      Time Warner Communications, I
 7046      500           668      UUNET Technologies, Inc. 
 1239      451           780      Sprint 
    1      440           862      BBN Planet 
 4293      406           418      Cable & Wireless USA 
  852      367           581      Telus Advanced Communications
  705      359           492      UUNET Technologies, Inc. 
 2764      353           398      connect.com.au pty ltd
  209      337           510      Qwest 
  703      324           397      UUNET Technologies, Inc. 
 2149      297           393      Performance Systems, Inc. 
 4151      291           337      USDA 
 3549      285           415      Global Crossing 

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

   4:3         9:1        12:455      13:10       15:2        17:5      
  20:1        24:761      25:1        32:74       38:13       40:4      
  43:1        44:2        52:1        57:14       61:226      62:162    
  63:1902     64:1103     65:996      66:597      67:25       68:15     
  80:142     128:63      129:121     130:23      131:44      132:13     
 133:2       134:121     135:10      136:119     137:99      138:62     
 139:30      140:99      141:57      142:64      143:42      144:54     
 145:12      146:213     147:60      148:161     149:87      150:39     
 151:43      152:384     153:34      154:7       155:85      156:81     
 157:122     158:72      159:75      160:27      161:55      162:96     
 163:127     164:131     165:112     166:218     167:160     168:113    
 169:48      170:281     171:2       191:1       192:5398    193:2067   
 194:2057    195:862     196:430     198:3743    199:3248    200:2387   
 201:1       202:2899    203:4523    204:3309    205:2193    206:2752   
 207:2588    208:2808    209:2913    210:533     211:150     212:885    
 213:541     214:7       215:17      216:2956    217:411     218:12     


End of report
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