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[bgp-stats] Routing Table Report - Japan view



*  BGP Statistics focusing on the Asia Pacific Region *
* To unsubscribe: send "unsubscribe" to bgp-stats-request@lists.apnic.net *

Routing Table Report   04:00 +10GMT Sun 30 Dec, 2001

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

BGP routing table entries examined:                            106659
    Prefixes after maximum aggregation:                         71468
    Unique aggregates announced to Internet:                    51996
Total ASes present in the Internet Routing Table:               12275
Origin-only ASes present in the Internet Routing Table:         10677
Origin ASes announcing only one prefix:                          4615
Transit ASes present in the Internet Routing Table:              1598
Transit-only ASes present in the Internet Routing Table:           51
Average AS path length visible in the Internet Routing Table:     5.3
    Max AS path length visible:                                    19
Illegal AS announcements present in the Routing Table:              9
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:                 1162294280
    Equivalent to 69 /8s, 71 /16s and 52 /24s
    Percentage of available address space announced:             31.4
    Percentage of allocated address space announced:             59.3
    Percentage of available address space allocated:             52.8
Total number of prefixes smaller than registry allocations:     71541

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

Prefixes being announced by APNIC Region ASes:                  16559
    Total APNIC prefixes after maximum aggregation:             10399
Prefixes being announced from the APNIC address blocks:         15161
    Unique aggregates announced from the APNIC address blocks:   9780
APNIC Region origin ASes present in the Internet Routing Table:  1414
APNIC Region origin ASes announcing only one prefix:              457
APNIC Region transit ASes present in the Internet Routing Table:  235
Average APNIC Region AS path length visible:                      5.3
    Max APNIC Region AS path length visible:                       14
Number of APNIC addresses announced to Internet:             77871808
    Equivalent to 4 /8s, 164 /16s and 58 /24s
    Percentage of available APNIC address space announced:       57.6

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:                   72259
    Total ARIN prefixes after maximum aggregation:              47184
Prefixes being announced from the ARIN address blocks:          51996
    Unique aggregates announced from the ARIN address blocks:   16965
ARIN Region origin ASes present in the Internet Routing Table:   7278
ARIN Region origin ASes announcing only one prefix:              2258
ARIN Region transit ASes present in the Internet Routing Table:   726
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        16
Number of ARIN addresses announced to Internet:             181438408
    Equivalent to 10 /8s, 208 /16s and 135 /24s
    Percentage of available ARIN address space announced:        67.6

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:                   17834
    Total RIPE prefixes after maximum aggregation:              13885
Prefixes being announced from the RIPE address blocks:          14544
    Unique aggregates announced from the RIPE address blocks:    9705
RIPE Region origin ASes present in the Internet Routing Table:   3532
RIPE Region origin ASes announcing only one prefix:              1900
RIPE Region transit ASes present in the Internet Routing Table:   628
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        19
Number of RIPE addresses announced to Internet:             105208576
    Equivalent to 6 /8s, 69 /16s and 91 /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
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     1332       1258         985   Telstra Pty Ltd
 2764      403        378         377   connect.com.au pty ltd
  703      399        344         306   UUNET Technologies, Inc. 
 2907      395       1891         361   SINET Japan
 7474      311        285         202   Optus Communications Pty Ltd
 4755      275        112          84   Videsh Sanchar Nigam Ltd. Aut
 4134      268       1874          98   Data Communications Bureau
 4766      185       1395         135   Korea Internet Exchange for "
 1659      174        924          34   Taiwan Academic Network (TANe
 9443      173         45          69   Primus Telecommunications
17557      172         13          86   Pakistan Telecom
 9583      152         32           3   Satyam Infoway Ltd.,
 4740      149         34         123   OzEmail ISP
 9768      143        381          87   Korea Telecom
 4812      137        192          34   China Telecom (Group) - Shang
 7657      125         22          84   The Internet Group Limited
17676      121       1920           7   XTAGE CORPORATION
 4780      117        186          42   Digital United Inc.
 4713      116        910         103   NTT Communications Corporatio
 9800      112        194          21   CHINA UNICOM

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702     1090       2671         859   UUNET Technologies, Inc. 
 3301      401        925         353   TeliaNet Sweden
 1257      252        473         249   SWIPnet Swedish IP Network
 3215      236        562         152   France Telecom / &Equant
  680      233       2149         231   DFN-IP service G-WiN
 5515      217        721         177   Sonera Finland Autonomous Sys
 3320      197       1962         166   Deutsche Telekom AG
  786      181       1873         181   The JANET IP Service
  719      164        289         118   LANLINK autonomous system
 8708      149         20         140   Romania Data Systems S.A.
 5400      146         59          83   Concert European Core Network
 5549      140         78          64   Nextra Deutschland GmbH + Co.
 2856      136        777         125   BTnet UK Regional network
 3303      134        575         124   Swisscom Ltd
 3269      115        663          70   TELECOM ITALIA
12302      111          7          35   MobiFon S.A.
  517      109        230         107   KPNQwest Germany GmbH
 8297      108         31          62   Teleglobe Autonomous System i
 5511       99        192          79   France Telecom
 1290       95        396          70   PSINet UK Ltd.

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     2145       8793        1520   UUNET Technologies, Inc. 
 7018     1120       7404         875   AT&T 
 3967      925        361         446   Exodus Communication 
    1      869       8406         646   BBN Planet 
 1239      781       3153         603   Sprint 
 3908      777       1639         479   Supernet, Inc. 
 8010      715         62          11   PublicNet Communications, Inc
 7046      695        806         440   UUNET Technologies, Inc. 
  209      622       1862         297   Qwest 
 4323      585        364         201   Time Warner Communications, I
  852      578        978         382   Telus Advanced Communications
  690      538         77         323   Merit Network 
  705      473        349         294   UUNET Technologies, Inc. 
 2914      457       2210         428   Verio, Inc. 
 3549      404        836         201   Global Crossing 
 7132      402        470         168   Southwestern Bell Internet Se
 2149      398        230         335   Performance Systems, Inc. 
 3561      380       2253         330   Cable & Wireless USA 
  577      353        588         221   Bell Advanced Communications 
 3741      350        730         239   The Internet Solution 

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

  ASN   Net Savings Description
 8010      704      PublicNet Communications, Inc
 3967      479      Exodus Communication 
 4323      384      Time Warner Communications, I
 1221      347      Telstra Pty Ltd
  209      325      Qwest 
 4151      324      USDA 
 3908      298      Supernet, Inc. 
11371      271      Rhythms NetConnections 
 7046      255      UUNET Technologies, Inc. 
 7018      245      AT&T 
 6347      238      SAVVIS Communications Corpora
 7132      234      Southwestern Bell Internet Se
  702      231      UUNET Technologies, Inc. 
    1      223      BBN Planet 
  690      215      Merit Network 
 3549      203      Global Crossing 
 4355      198      EarthLink, Inc. 
  852      196      Telus Advanced Communications
 6517      196      Yipes Communications, Inc. 
 7843      192      Adelphia Corp. 

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

Bad AS  Designation  Network              Transit AS  Description
 2027   UNALLOCATED   150.185.128.0/18      8143       Publicom Corp. 
65021   PRIVATE       203.75.135.0/27       3462       Data Communication B
65021   PRIVATE       203.75.210.129/32     3462       Data Communication B
65021   PRIVATE       203.75.210.130/32     3462       Data Communication B
65021   PRIVATE       203.75.210.131/32     3462       Data Communication B
65021   PRIVATE       203.75.210.132/32     3462       Data Communication B
65021   PRIVATE       203.75.232.0/27       3462       Data Communication B
65021   PRIVATE       203.75.232.160/27     3462       Data Communication B
 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        /8:19       /9:5       /10:7       /11:11      /12:37      
/13:91      /14:229     /15:390     /16:7052    /17:1367    /18:2468    
/19:7180    /20:6285    /21:4722    /22:7166    /23:8896    /24:59799   
/25:244     /26:243     /27:157     /28:108     /29:86      /30:78      
/31:0       /32:19      

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

  ASN   No of nets  Total ann.   Description
  701     1373          2145      UUNET Technologies, Inc. 
 1221     1186          1332      Telstra Pty Ltd
 3967      744           925      Exodus Communication 
  702      705          1090      UUNET Technologies, Inc. 
 8010      699           715      PublicNet Communications, Inc
 7018      583          1120      AT&T 
  690      535           538      Merit Network 
 3908      535           777      Supernet, Inc. 
 7046      531           695      UUNET Technologies, Inc. 
 4323      495           585      Time Warner Communications, I
 1239      452           781      Sprint 
  209      449           622      Qwest 
    1      445           869      BBN Planet 
  852      367           578      Telus Advanced Communications
  705      357           473      UUNET Technologies, Inc. 
 2764      357           403      connect.com.au pty ltd
  703      325           399      UUNET Technologies, Inc. 
 2149      300           398      Performance Systems, Inc. 
 4151      294           340      USDA 
 7474      276           311      Optus Communications Pty Ltd

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

   4:3         9:1        12:445      13:10       15:2        17:5      
  20:1        24:802      25:1        32:73       38:14       40:4      
  43:1        44:2        52:1        53:2        57:13       61:182    
  62:152      63:1914     64:1488     65:1031     66:740      67:19     
  68:7        80:126     128:61      129:108     130:24      131:41     
 132:14      133:2       134:110     135:10      136:49      137:108    
 138:62      139:30      140:103     141:57      142:53      143:44     
 144:55      145:12      146:201     147:94      148:154     149:88     
 150:39      151:38      152:380     153:34      154:6       155:81     
 156:84      157:121     158:71      159:77      160:26      161:54     
 162:85      163:122     164:118     165:100     166:204     167:160    
 168:113     169:48      170:297     171:2       191:1       192:5259   
 193:2059    194:2067    195:837     196:430     198:3710    199:3294   
 200:2367    201:1       202:2830    203:4502    204:3254    205:2180   
 206:2542    207:2624    208:2617    209:2953    210:521     211:154    
 212:880     213:555     214:9       215:15      216:2950    217:398    
 218:11     

End of report
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