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Weekly Routing Table Report



This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats at lists.apnic.net

For a graphical representation, please see http://www.apnic.net/stats/bgp.

If you have any comments please contact Philip Smith <pfs at cisco.com>.

Routing Table Report   20:00 +10GMT Fri 08 Mar, 2002

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

BGP routing table entries examined:                            109552
    Prefixes after maximum aggregation:                         72183
    Unique aggregates announced to Internet:                    51996
Total ASes present in the Internet Routing Table:               12692
Origin-only ASes present in the Internet Routing Table:         10991
Origin ASes announcing only one prefix:                          4803
Transit ASes present in the Internet Routing Table:              1701
Transit-only ASes present in the Internet Routing Table:           56
Average AS path length visible in the Internet Routing Table:     5.4
    Max AS path length visible:                                    16
Illegal AS announcements present in the Routing Table:              7
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:                 1167658920
    Equivalent to 69 /8s, 153 /16s and 15 /24s
    Percentage of available address space announced:             31.5
    Percentage of allocated address space announced:             59.6
    Percentage of available address space allocated:             52.8
Total number of prefixes smaller than registry allocations:     73385

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

Prefixes being announced by APNIC Region ASes:                  17921
    Total APNIC prefixes after maximum aggregation:             10655
Prefixes being announced from the APNIC address blocks:         16437
    Unique aggregates announced from the APNIC address blocks:   9996
APNIC Region origin ASes present in the Internet Routing Table:  1455
APNIC Region origin ASes announcing only one prefix:              476
APNIC Region transit ASes present in the Internet Routing Table:  255
Average APNIC Region AS path length visible:                      5.3
    Max APNIC Region AS path length visible:                       15
Number of APNIC addresses announced to Internet:             81482560
    Equivalent to 4 /8s, 219 /16s and 83 /24s
    Percentage of available APNIC address space announced:       60.2

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:                   73350
    Total ARIN prefixes after maximum aggregation:              47375
Prefixes being announced from the ARIN address blocks:          51778
    Unique aggregates announced from the ARIN address blocks:   16246
ARIN Region origin ASes present in the Internet Routing Table:   7518
ARIN Region origin ASes announcing only one prefix:              2351
ARIN Region transit ASes present in the Internet Routing Table:   766
Average ARIN Region AS path length visible:                       5.3
    Max ARIN Region AS path length visible:                        16
Number of ARIN addresses announced to Internet:             189973956
    Equivalent to 11 /8s, 82 /16s and 197 /24s
    Percentage of available ARIN address space announced:        70.8

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:                   18281
    Total RIPE prefixes after maximum aggregation:              14153
Prefixes being announced from the RIPE address blocks:          15019
    Unique aggregates announced from the RIPE address blocks:   10004
RIPE Region origin ASes present in the Internet Routing Table:   3662
RIPE Region origin ASes announcing only one prefix:              1976
RIPE Region transit ASes present in the Internet Routing Table:   669
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        15
Number of RIPE addresses announced to Internet:             107343392
    Equivalent to 6 /8s, 101 /16s and 238 /24s
    Percentage of available RIPE address space announced:        71.1

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     1299       1229         958   Telstra Pty Ltd
 4538      462       1162          16   China Education and Research 
 2907      408       1959         372   SINET Japan
  703      403        333         313   UUNET Technologies, Inc. 
 2764      385        360         361   connect.com.au pty ltd
 9394      302        113           4   CHINA RAILWAY Internet(CRNET)
 7474      295        289         200   Optus Communications Pty Ltd
 4755      291        111          88   Videsh Sanchar Nigam Ltd. Aut
 4134      274       1962          97   Data Communications Bureau
 9443      273         44          63   Primus Telecommunications
17557      233         15         100   Pakistan Telecom
 4766      213       1521         147   Korea Internet Exchange for "
 7539      165        237         158   TANet2, sponsored by NSC, TAI
 4804      148         84          68   Microplex PTY LTD
 9768      147        385          89   Korea Telecom
 9583      141         32           5   Satyam Infoway Ltd.,
 4713      127        914         104   NTT Communications Corporatio
 7657      123         22          86   The Internet Group Limited
 4780      117        186          40   Digital United Inc.
17676      117       1872          17   XTAGE CORPORATION

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702     1041       2631         852   UUNET Technologies, Inc. 
 3301      396        924         350   TeliaNet Sweden
 3215      261        570         157   France Telecom / &Equant
 1257      236        487         232   SWIPnet Swedish IP Network
  680      231       2147         230   DFN-IP service G-WiN
 5515      216        697         173   Sonera Finland Autonomous Sys
 5400      200         83          94   Concert European Core Network
 3320      196       1964         171   Deutsche Telekom AG
  786      182       1874         182   The JANET IP Service
 8708      158         23         147   Romania Data Systems S.A.
  719      132        289         118   LANLINK autonomous system
 2856      131        790         120   BTnet UK Regional network
 3303      124        579         124   Swisscom Ltd
12302      119          7          40   MobiFon S.A.
 3269      116        693          70   TELECOM ITALIA
 8297      115         37          65   Teleglobe Autonomous System i
  517      101        226          99   KPNQwest Germany GmbH
 9051      101          6          25   INCONET Autonomous System
 2874       96        100          36   Global One Services AB
 5511       91        192          79   France Telecom

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     2140       8408        1539   UUNET Technologies, Inc. 
 7018     1209       7495         910   AT&T 
 3908      847       1659         480   Supernet, Inc. 
    1      836       8123         610   BBN Planet 
 1239      791       3381         622   Sprint 
 4323      639        435         252   Time Warner Communications, I
  852      633       1128         414   Telus Advanced Communications
 7046      626        835         410   UUNET Technologies, Inc. 
  209      545       1976         313   Qwest 
 7132      514        541         157   Southwestern Bell Internet Se
 3549      478        843         243   Global Crossing 
  690      437         66         284   Merit Network 
 2914      422       2176         418   Verio, Inc. 
 2149      379        209         315   Performance Systems, Inc. 
 7843      379        305          50   Adelphia Corp. 
  705      369        114         260   UUNET Technologies, Inc. 
 3741      344        731         235   The Internet Solution 
 2386      337        356         192   AT&T Data Communications Serv
 6197      330        215         168   BellSouth Network Solutions, 
 3561      325       2169         292   Cable & Wireless USA 

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

  ASN   No of nets  Net Savings Description
 4538       462         446      China Education and Research 
 4323       639         387      Time Warner Communications, I
 3908       847         367      Supernet, Inc. 
 7132       514         357      Southwestern Bell Internet Se
 1221      1299         341      Telstra Pty Ltd
 7843       379         329      Adelphia Corp. 
 7018      1209         299      AT&T 
 9394       302         298      CHINA RAILWAY Internet(CRNET)
 4151       306         290      USDA 
 6198       309         276      BellSouth Network Solutions, 
11371       270         264      Rhythms NetConnections 
 6347       315         237      SAVVIS Communications Corpora
 3549       478         235      Global Crossing 
  209       545         232      Qwest 
 7029       243         228      Alltel Information Services, 
    1       836         226      BBN Planet 
  852       633         219      Telus Advanced Communications
 7046       626         216      UUNET Technologies, Inc. 
 9443       273         210      Primus Telecommunications
 4355       242         205      EarthLink, Inc. 

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

Bad AS  Designation  Network              Transit AS  Description
23336   UNALLOCATED   65.163.175.0/24        701       UUNET Technologies, 
23336   UNALLOCATED   65.166.167.0/24        701       UUNET Technologies, 
23336   UNALLOCATED   65.171.130.0/24        701       UUNET Technologies, 
23336   UNALLOCATED   65.222.19.0/24         701       UUNET Technologies, 
23339   UNALLOCATED   66.181.32.0/20         701       UUNET Technologies, 
23336   UNALLOCATED   204.182.49.0/24        701       UUNET Technologies, 
 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 
96.0.0.0/20           3549     Global Crossing 
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     BBN Planet 
144.7.0.0/16           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
189.186.184.0/24      4471     Michigan Internet Cooperative
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       /10:8       /11:14      /12:35      
/13:88      /14:232     /15:404     /16:7175    /17:1381    /18:2534    
/19:7385    /20:6887    /21:4882    /22:7454    /23:9124    /24:60935   
/25:228     /26:266     /27:120     /28:90      /29:111     /30:132     
/31:0       /32:43      

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

  ASN   No of nets  Total ann.   Description
  701     1381          2140      UUNET Technologies, Inc. 
 1221     1156          1299      Telstra Pty Ltd
  702      661          1041      UUNET Technologies, Inc. 
 7018      629          1209      AT&T 
 3908      583           847      Supernet, Inc. 
 4323      510           639      Time Warner Communications, I
 1239      452           791      Sprint 
 7046      442           626      UUNET Technologies, Inc. 
    1      433           836      BBN Planet 
  690      433           437      Merit Network 
  852      388           633      Telus Advanced Communications
  209      358           545      Qwest 
 2764      341           385      connect.com.au pty ltd
 3549      341           478      Global Crossing 
  703      325           403      UUNET Technologies, Inc. 
  705      317           369      UUNET Technologies, Inc. 
 9394      289           302      CHINA RAILWAY Internet(CRNET)
 2149      287           379      Performance Systems, Inc. 
 6197      279           330      BellSouth Network Solutions, 
 7066      272           301      Virginia Polytechnic Institut

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

   3:1         9:1        12:485      13:10       15:1        17:5      
  20:2        24:760      25:1        32:68       38:9        40:6      
  44:1        57:15       61:283      62:171      63:1882     64:1149   
  65:1063     66:816      67:52       68:5        80:213      81:5      
 128:63      129:120     130:23      131:74      132:11      133:3      
 134:125     135:10      136:251     137:102     138:195     139:48     
 140:185     141:61      142:87      143:37      144:143     145:12     
 146:217     147:164     148:130     149:91      150:41      151:49     
 152:343     153:33      154:8       155:90      156:75      157:118    
 158:73      159:118     160:23      161:55      162:140     163:118    
 164:92      165:118     166:224     167:186     168:119     169:49     
 170:287     171:2       189:1       192:5435    193:2207    194:2064   
 195:800     196:429     198:3678    199:3232    200:2363    201:1      
 202:3041    203:4543    204:3321    205:2174    206:2507    207:2627   
 208:2559    209:2781    210:543     211:196     212:870     213:581    
 214:9       215:18      216:2976    217:441     218:21     

End of report

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