Weekly Routing Table Report

Routing Analysis cscora at dev.apnic.net
Thu Apr 19 14:09:46 EDT 2001


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 Apr, 2001

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

BGP routing table entries examined:                            103456
Origin ASes present in the Internet Routing Table:              10626
Origin ASes announcing only one prefix:                          3836
Transit ASes present in the Internet Routing Table:              1422
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:             34
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:     2
Number of addresses announced to Internet:                 1239197280
    Equivalent to 73 /8s, 220 /16s and 166 /24s
    Percentage of available address space announced:             33.4
    Percentage of allocated address space announced:             65.6
    Percentage of available address space allocated:             51.0

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

Prefixes being announced by APNIC Region ASes:                  15690
Prefixes being announced from the APNIC address blocks:         14205
APNIC Region origin ASes present in the Internet Routing Table:  1232
APNIC Region origin ASes announcing only one prefix:              436
APNIC Region transit ASes present in the Internet Routing Table:  197
Average APNIC Region AS path length visible:                      5.1
    Max APNIC Region AS path length visible:                       14
Number of APNIC addresses announced to Internet:             71391058
    Equivalent to 4 /8s, 65 /16s and 87 /24s
    Percentage of available APNIC address space announced:       70.2

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:                   71577
Prefixes being announced from the ARIN address blocks:          49051
ARIN Region origin ASes present in the Internet Routing Table:   6462
ARIN Region origin ASes announcing only one prefix:              1911
ARIN Region transit ASes present in the Internet Routing Table:   683
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        14
Number of ARIN addresses announced to Internet:             180570501
    Equivalent to 10 /8s, 195 /16s and 73 /24s
    Percentage of available ARIN address space announced:        82.8

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
ARIN Address Blocks    63/8, 64/7, 66/8, 199/8, 200/8, 204/6, 208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                   16155
Prefixes being announced from the RIPE address blocks:          12841
RIPE Region origin ASes present in the Internet Routing Table:   2939
RIPE Region origin ASes announcing only one prefix:              1489
RIPE Region transit ASes present in the Internet Routing Table:   540
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        17
Number of RIPE addresses announced to Internet:              96663513
    Equivalent to 5 /8s, 194 /16s and 247 /24s
    Percentage of available RIPE address space announced:        82.3

RIPE AS Blocks         1877 - 1901, 2042, 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, 193/8, 194/7, 212/7 and 217/8

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /19 equiv  Description
 1221     2001        684       Telstra
 2764      425        147       connect.com.au pty ltd
  703      390        205       UUNET Technologies, Inc.
 2907      363        875       SINET Japan
 4755      301        110       VSNL India
 4538      235       1038       China Education and Research 
 7539      228        102       Delegated to TWNIC for subseq
 4134      188        623       Data Communications Bureau
 4766      187        770       KORnet Powered BY Korea Telec
 7474      178         85       Optus Communications
 9269      161         22       Hong Kong CTI
 1237      156         70       System Engineering Research I
 4740      152         10       Ozemail
 7657      152         12       The Internet Group Limited
17561      151         61       Internet service provision to
 7545      147         10       TPG Internet Pty Ltd
 4786      129          7       NetConnect Communications Pty
 7586      124          9       Paradox Digital Pty. Ltd
 7617      124         46       One.Net Pty Ltd
 9797      122         10       Asia Online Australia

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

  ASN   No of nets  /19 equiv  Description
  702      480        670       UUNET Technologies, Inc.
 3301      389        337       TeliaNet Sweden
 1270      280        448       UUNET Germany
 1257      277        247       Swipnet AB
  680      207        914       Deutschef Forschurgsnetz
 3215      207        228       RAIN
 5515      190        336       Sonera Finland
  719      189        146       LANLINK
  786      185        959       JANET IP Service
 3320      160        710       Deutsche Telekom AG
 5400      129         41       Concert Internet Plus Europea
  517      127        134       Xlink
 3303      123        298       Swisscom
 2856      122        388       BTnet UK Regional network
 1290      117        206       PSINet UK Ltd.
 8708      113          5       Romania Data System
 3352      108        241       Ibernet, Internet A
 1849      107        223       UUNET UK (formerly PIPEX)
 1267       97        978       IUnet S.p.A
 1901       97         77       EUnet Austria

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

  ASN   No of nets  /19 equiv  Description
  701     2426       3626       UUNET Technologies, Inc.
  705     1612         69       UUNET Technologies, Inc.
 7018      962       3190       AT&T
    1      960       4495       BBN Planet
 7046      801        552       UUNET Technologies, Inc.
 1239      641       1603       Sprint ICM-Inria
 2914      608       1210       Verio, Inc.
 3561      561       1264       Cable & Wireless USA
  174      533       2751       PSINet Inc.
 3549      505        514       Global Crossing
 4293      480         52       Cable & Wireless USA
  209      449        707       Qwest
  690      424         43       Merit Network
 2548      400        514       Digital Express Group, Inc.
 3908      376        262       Supernet, Inc.
 8151      362        218       UniNet S.A. de C.V.
 3967      336        226       Exodus Communication
 4323      336        136       Time Warner Communications, I
 8013      336         54       PSINet Ltd. Canada
11371      332         50       Rhythms NetConnections

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

  ASN   No of nets  /19 equiv  Description
  701     2426       3626       UUNET Technologies, Inc.
 1221     2001        684       Telstra
  705     1612         69       UUNET Technologies, Inc.
 7018      962       3190       AT&T
    1      960       4495       BBN Planet
 7046      801        552       UUNET Technologies, Inc.
 1239      641       1603       Sprint ICM-Inria
 2914      608       1210       Verio, Inc.
 3561      561       1264       Cable & Wireless USA
  174      533       2751       PSINet Inc.
 3549      505        514       Global Crossing
  702      480        670       UUNET Technologies, Inc.
 4293      480         52       Cable & Wireless USA
  209      449        707       Qwest
 2764      425        147       connect.com.au pty ltd
  690      424         43       Merit Network
 2548      400        514       Digital Express Group, Inc.
  703      390        205       UUNET Technologies, Inc.
 3301      389        337       TeliaNet Sweden
 3908      376        262       Supernet, Inc.

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

Bad AS  Designation  Network              Transit AS  Description
 2027   UNALLOCATED   150.185.0.0/16       10530       Interpacket Group, I
 2027   UNALLOCATED   150.185.128.0/18      8143       Publicom Corp.
 2027   UNALLOCATED   150.186.0.0/16       10530       Interpacket Group, I
 2027   UNALLOCATED   150.187.0.0/16       10530       Interpacket Group, I
 2027   UNALLOCATED   150.188.0.0/16       10530       Interpacket Group, I
 2027   UNALLOCATED   150.189.0.0/16       10530       Interpacket Group, I
 1877   UNALLOCATED   192.108.196.0/24      1800       SPRINT
 1877   UNALLOCATED   192.108.209.0/24      1880       Stupi, house man's 
 1877   UNALLOCATED   192.108.210.0/24      1880       Stupi, house man's 
 1877   UNALLOCATED   192.108.214.0/24      1800       SPRINT
 5757   UNALLOCATED   192.239.13.0/24        701       UUNET Technologies, 
64561   PRIVATE       202.139.40.192/27     7474       Optus Communications
64537   PRIVATE       202.139.47.96/29      7474       Optus Communications
64537   PRIVATE       202.139.116.0/25      7474       Optus Communications
64532   PRIVATE       202.139.116.128/27    7474       Optus Communications
64532   PRIVATE       202.139.116.192/27    7474       Optus Communications
64532   PRIVATE       202.139.116.224/29    7474       Optus Communications
64532   PRIVATE       202.139.116.240/29    7474       Optus Communications
64532   PRIVATE       202.139.116.248/29    7474       Optus Communications
64534   PRIVATE       202.139.121.0/28      7474       Optus Communications
64537   PRIVATE       202.139.168.192/27    7474       Optus Communications
64543   PRIVATE       202.139.182.0/28      7474       Optus Communications
65535   PRIVATE       203.24.169.0/24      17486       Swiftel Communicatio
65500   PRIVATE       203.166.86.0/24      10084       Western Australian I
64553   PRIVATE       203.202.2.72/29       7474       Optus Communications
64555   PRIVATE       203.202.9.88/29       7474       Optus Communications
64534   PRIVATE       203.202.9.128/25      7474       Optus Communications
64548   PRIVATE       203.202.10.0/27       7474       Optus Communications
64560   PRIVATE       203.202.14.80/28      7474       Optus Communications
64553   PRIVATE       203.202.15.16/28      7474       Optus Communications
 5555   UNALLOCATED   205.110.64.0/24        721       DLA Systems Automati
 5555   UNALLOCATED   205.110.68.0/22        721       DLA Systems Automati
 5555   UNALLOCATED   205.110.72.0/21        721       DLA Systems Automati
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 

Advertised IANA Reserved Addresses
----------------------------------

Network            Origin AS  Description
223.255.46.0/24       6853     GLOBAL-ONE-PORTUGAL
223.255.70.0/24       6853     GLOBAL-ONE-PORTUGAL

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:22       /9:4       /10:4       /11:10      /12:29      
/13:67      /14:206     /15:326     /16:6939    /17:1125    /18:2106    
/19:6583    /20:5060    /21:4421    /22:6744    /23:8626    /24:59774   
/25:275     /26:405     /27:216     /28:196     /29:134     /30:125     
/31:1       /32:58      

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

   9:3        12:354      13:10       15:1        17:1        24:709    
  26:1        32:12       38:7        44:3        47:1        53:2      
  55:1        57:11       61:28       62:131      63:1916     64:1461   
  65:954      66:274     128:30      129:112     130:20      131:26     
 132:9       133:1       134:168     135:8       136:16      137:117    
 138:247     139:52      140:149     141:176     142:61      143:41     
 144:131     145:9       146:132     147:134     148:154     149:134    
 150:27      151:175     152:801     153:33      154:15      155:77     
 156:39      157:109     158:61      159:83      160:28      161:56     
 162:61      163:136     164:129     165:127     166:177     167:134    
 168:82      169:34      170:219     171:2       192:5410    193:1949   
 194:2046    195:770     196:406     198:3656    199:3384    200:1909   
 202:2471    203:4989    204:3376    205:2246    206:2719    207:2844   
 208:2905    209:3202    210:481     211:190     212:847     213:408    
 214:9       215:11      216:2936    217:196     223:2      

End of report



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