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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   12 Oct, 2001

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

BGP routing table entries examined:                            109453
Origin ASes present in the Internet Routing Table:              11858
Origin ASes announcing only one prefix:                          4365
Transit ASes present in the Internet Routing Table:              1533
Average AS path length visible in the Internet Routing Table:     5.3
    Max AS path length visible:                                    17
Illegal AS announcements present in the Routing Table:             73
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    16
Number of addresses announced to Internet:                 1259798670
    Equivalent to 75 /8s, 23 /16s and 0 /24s
    Percentage of available address space announced:             34.0
    Percentage of allocated address space announced:             65.4
    Percentage of available address space allocated:             51.9
Total number of prefixes smaller than registry allocations:     74165

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

Prefixes being announced by APNIC Region ASes:                  16425
Prefixes being announced from the APNIC address blocks:         14952
APNIC Region origin ASes present in the Internet Routing Table:  1380
APNIC Region origin ASes announcing only one prefix:              463
APNIC Region transit ASes present in the Internet Routing Table:  234
Average APNIC Region AS path length visible:                      5.1
    Max APNIC Region AS path length visible:                       15
Number of APNIC addresses announced to Internet:             81541744
    Equivalent to 4 /8s, 220 /16s and 58 /24s
    Percentage of available APNIC address space announced:       80.2

APNIC AS Blocks        4608 - 4864, 7467 - 7722, 9216 - 10239, 17408 - 18431
APNIC Address Blocks   61/8, 202/7, 210/7 and 218/8

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

Prefixes being announced by ARIN Region ASes:                   75297
Prefixes being announced from the ARIN address blocks:          53590
ARIN Region origin ASes present in the Internet Routing Table:   7132
ARIN Region origin ASes announcing only one prefix:              2124
ARIN Region transit ASes present in the Internet Routing Table:   715
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        17
Number of ARIN addresses announced to Internet:             218175305
    Equivalent to 13 /8s, 1 /16s and 23 /24s
    Percentage of available ARIN address space announced:        81.3

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 - 22527
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:                   17729
Prefixes being announced from the RIPE address blocks:          14094
RIPE Region origin ASes present in the Internet Routing Table:   3356
RIPE Region origin ASes announcing only one prefix:              1778
RIPE Region transit ASes present in the Internet Routing Table:   585
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        15
Number of RIPE addresses announced to Internet:             108572476
    Equivalent to 6 /8s, 120 /16s and 175 /24s
    Percentage of available RIPE address space announced:        71.9

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  Description
 1221     1592       1312       Telstra Pty Ltd
 2764      414        358       connect.com.au pty ltd
  703      378        335       UUNET Technologies, Inc. 
 2907      370       1847       SINET Japan
 4755      299        163       Videsh Sanchar Nigam Ltd. Aut
 7474      243        274       Optus Communications Pty Ltd
 4134      239       1862       Data Communications Bureau
 4766      186       1466       Korea Internet Exchange for "
 4740      177         38       OzEmail ISP
 9443      159         54       Primus Telecommunications
 2521      140        171       PSINet Japan
 9768      131        363       Korea Telecom
17557      129          8       Pakistan Telecom
 4786      123         14       NetConnect Communications Pty
 4763      122         69       Telstra New Zealand
 7545      121         23       TPG Internet Pty Ltd
 4713      117        885       NTT Communications Corporatio
 9583      116         60       Satyam Infoway Ltd.,
17561      116        167       Internet service provision to
 7539      108        150       TANet2, sponsored by NSC, TAI

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

  ASN   No of nets  /20 equiv  Description
  702      910       1952       UUNET Technologies, Inc. 
 3301      438        937       TeliaNet Sweden
 1257      273        512       SWIPnet Swedish IP Network
  680      241       2309       DFN-IP service G-WiN
 3215      236        515       France Telecom / &Equant
 5515      194        688       Sonera Finland Autonomous Sys
 3320      189       1940       Deutsche Telekom AG
  786      186       1890       The JANET IP Service
 1103      161       4089       SURFnet BV
 8708      161         17       Romania Data Systems S.A.
15870      142         10       Global Center Frankfurt
 5400      139         64       Concert European Core Network
  719      133        289       LANLINK autonomous system
 3303      129        560       Swisscom Ltd
 2856      128        776       BTnet UK Regional network
 5549      127         67       Nextra Deutschland GmbH + Co.
 1270      125        731       UUNET Germany
15878      122          9       Global Center Paris
  517      112        252       KPNQwest Germany GmbH
 3269      106        807       TELECOM ITALIA

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

  ASN   No of nets  /20 equiv  Description
  701     2306       9166       UUNET Technologies, Inc. 
 3908     1150       1563       Supernet, Inc. 
 7018     1060       7264       AT&T 
    1      871       8587       BBN Planet 
 7046      811       1021       UUNET Technologies, Inc. 
 1239      738       3517       Sprint 
 3967      618        471       Exodus Communication 
  209      574       2253       Qwest 
  690      504         80       Merit Network 
 2914      489       2256       Verio, Inc. 
 4293      459        112       Cable & Wireless USA 
  705      415         67       UUNET Technologies, Inc. 
 3561      401       2356       Cable & Wireless USA 
  721      392       4407       DLA Systems Automation Center
 2149      383        328       Performance Systems, Inc. 
 3549      383        843       Global Crossing 
 2548      356        999       Business Internet, Inc. 
  577      351        636       Bell Advanced Communications 
 5106      350        213       Ameritech Advanced Data Servi
 4323      345        355       Time Warner Communications, I

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  Description
  701     2306       9166       UUNET Technologies, Inc. 
 1221     1592       1312       Telstra Pty Ltd
 3908     1150       1563       Supernet, Inc. 
 7018     1060       7264       AT&T 
  702      910       1952       UUNET Technologies, Inc. 
    1      871       8587       BBN Planet 
 7046      811       1021       UUNET Technologies, Inc. 
 1239      738       3517       Sprint 
 3967      618        471       Exodus Communication 
  209      574       2253       Qwest 
  690      504         80       Merit Network 
 2914      489       2256       Verio, Inc. 
 4293      459        112       Cable & Wireless USA 
 3301      438        937       TeliaNet Sweden
  705      415         67       UUNET Technologies, Inc. 
 2764      414        358       connect.com.au pty ltd
 3561      401       2356       Cable & Wireless USA 
  721      392       4407       DLA Systems Automation Center
 2149      383        328       Performance Systems, Inc. 
 3549      383        843       Global Crossing 

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

Bad AS  Designation  Network              Transit AS  Description
22153   UNALLOCATED   63.167.108.0/24       1239       Sprint 
 6971   UNALLOCATED   64.42.0.0/18          2516       Kokusai Denshin Denw
 6971   UNALLOCATED   64.42.0.0/17          2516       Kokusai Denshin Denw
 6971   UNALLOCATED   64.42.16.0/20         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.32.0/21         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.40.0/21         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.48.0/21         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.56.0/22         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.60.0/22         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.64.0/21         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.72.0/21         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.80.0/21         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.104.0/22        2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.108.0/22        2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.112.0/20        2914       Verio, Inc. 
 6971   UNALLOCATED   64.87.64.0/19         2516       Kokusai Denshin Denw
22153   UNALLOCATED   65.161.192.0/24       1239       Sprint 
22153   UNALLOCATED   65.165.127.0/24       1239       Sprint 
65000   PRIVATE       138.163.4.0/24         665       Department of Navy 
 2027   UNALLOCATED   150.185.128.0/18      8143       Publicom Corp. 
22153   UNALLOCATED   168.215.234.0/23      1239       Sprint 
22153   UNALLOCATED   168.215.235.0/24      1239       Sprint 
22153   UNALLOCATED   168.215.236.0/23      1239       Sprint 
22153   UNALLOCATED   168.215.237.0/24      1239       Sprint 
 6971   UNALLOCATED   192.103.229.0/24      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   192.103.230.0/23      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   192.103.232.0/22      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   192.103.236.0/23      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   192.103.237.0/24      2516       Kokusai Denshin Denw
 1877   UNALLOCATED   192.108.201.0/24      1880       Stupi, house man's p
 5555   UNALLOCATED   192.156.8.0/24         721       DLA Systems Automati
 5555   UNALLOCATED   192.156.41.0/24        721       DLA Systems Automati
22290   UNALLOCATED   198.140.161.0/24      2914       Verio, Inc. 
22051   UNALLOCATED   198.172.125.0/24      2914       Verio, Inc. 
 5555   UNALLOCATED   199.10.190.0/24        721       DLA Systems Automati
22290   UNALLOCATED   199.217.152.0/24      2914       Verio, Inc. 
22290   UNALLOCATED   199.217.187.0/24      2914       Verio, Inc. 
 6971   UNALLOCATED   199.249.223.0/24      2516       Kokusai Denshin Denw
22290   UNALLOCATED   205.159.194.0/24      2914       Verio, Inc. 
 6971   UNALLOCATED   206.58.248.0/22       2516       Kokusai Denshin Denw
 6971   UNALLOCATED   206.58.248.0/21       2516       Kokusai Denshin Denw
 6971   UNALLOCATED   206.58.252.0/23       2914       Verio, Inc. 
 6971   UNALLOCATED   206.58.254.0/23       2914       Verio, Inc. 
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 
22290   UNALLOCATED   207.150.139.0/24      2914       Verio, Inc. 
22237   UNALLOCATED   208.253.66.0/24        701       UUNET Technologies, 
22075   UNALLOCATED   209.39.134.0/24       2914       Verio, Inc. 
65515   PRIVATE       212.110.142.0/24      5593       CRIS-AS
 6971   UNALLOCATED   216.105.192.0/20      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.121.224.0/19      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.192.0/21      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.192.0/18      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.200.0/23      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.200.0/21      2914       Verio, Inc. 
 6971   UNALLOCATED   216.174.202.0/24      2914       Verio, Inc. 
 6971   UNALLOCATED   216.174.208.0/20      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.232.0/21      2914       Verio, Inc. 
 6971   UNALLOCATED   216.174.240.0/21      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.128.0/18      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.210.128.0/17      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.210.140.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.144.0/20      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.160.0/21      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.176.0/21      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.184.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.200.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.216.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.220.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.224.0/21      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.232.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.236.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.240.0/20      2914       Verio, Inc. 
 6971   UNALLOCATED   216.229.96.0/20       2516       Kokusai Denshin Denw

Advertised Unregistered Addresses
---------------------------------

Network            Origin AS  Description
39.0.0.0/8            4554     Exchange Point Blocks 
128.65.0.0/16         3463     ACES Research Inc 
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
201.11.128.0/24       2764     connect.com.au pty 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       /9:5       /10:8       /11:12      /12:33      
/13:87      /14:227     /15:392     /16:7090    /17:1301    /18:2394    
/19:7014    /20:5928    /21:4792    /22:7117    /23:9086    /24:62372   
/25:323     /26:329     /27:261     /28:257     /29:155     /30:195     
/31:1       /32:56      

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

  ASN   No of nets  Total ann.   Description
  701     1474          2306      UUNET Technologies, Inc. 
 1221     1446          1592      Telstra Pty Ltd
 3908      874          1150      Supernet, Inc. 
 7046      633           811      UUNET Technologies, Inc. 
  702      620           910      UUNET Technologies, Inc. 
 7018      555          1060      AT&T 
  690      501           504      Merit Network 
 4293      445           459      Cable & Wireless USA 
 3967      438           618      Exodus Communication 
    1      422           871      BBN Planet 
  209      409           574      Qwest 
 1239      399           738      Sprint 
 2764      368           414      connect.com.au pty ltd
  705      364           415      UUNET Technologies, Inc. 
 5106      329           350      Ameritech Advanced Data Servi
  703      313           378      UUNET Technologies, Inc. 
 4151      301           343      USDA 
11371      299           310      Rhythms NetConnections 
 4323      286           345      Time Warner Communications, I
11686      283           316      Education Networks of America

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

   4:6         9:1        12:417      13:10       15:1        17:5      
  20:1        24:779      25:1        26:1        32:74       38:14     
  43:2        44:2        52:1        53:2        57:15       61:113    
  62:159      63:1937     64:1289     65:833      66:479      67:32     
  80:66      128:52      129:112     130:20      131:47      132:40     
 133:2       134:121     135:13      136:91      137:93      138:154    
 139:49      140:149     141:192     142:56      143:39      144:151    
 145:37      146:225     147:130     148:189     149:86      150:38     
 151:178     152:387     153:51      154:19      155:83      156:95     
 157:112     158:72      159:70      160:47      161:61      162:70     
 163:144     164:118     165:99      166:204     167:155     168:130    
 169:39      170:287     171:2       192:5618    193:1974    194:2074   
 195:846     196:467     198:4102    199:3889    200:2405    201:2      
 202:2827    203:4574    204:3366    205:2217    206:2873    207:2611   
 208:3158    209:3108    210:578     211:135     212:863     213:529    
 214:9       215:13      216:2999    217:384     218:2      

End of report

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