Weekly Routing Table Report

Routing Analysis cscora at dev.apnic.net
Thu May 31 14:12:58 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   01 Jun, 2001

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

BGP routing table entries examined:                            107671
Origin ASes present in the Internet Routing Table:              10993
Origin ASes announcing only one prefix:                          4006
Transit ASes present in the Internet Routing Table:              1458
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:             33
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:                 1233416619
    Equivalent to 73 /8s, 132 /16s and 113 /24s
    Percentage of available address space announced:             33.3
    Percentage of allocated address space announced:             64.6
    Percentage of available address space allocated:             51.5

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

Prefixes being announced by APNIC Region ASes:                  15398
Prefixes being announced from the APNIC address blocks:         13903
APNIC Region origin ASes present in the Internet Routing Table:  1263
APNIC Region origin ASes announcing only one prefix:              442
APNIC Region transit ASes present in the Internet Routing Table:  207
Average APNIC Region AS path length visible:                      5.1
    Max APNIC Region AS path length visible:                       15
Number of APNIC addresses announced to Internet:             69540541
    Equivalent to 4 /8s, 37 /16s and 26 /24s
    Percentage of available APNIC address space announced:       68.4

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:                   74885
Prefixes being announced from the ARIN address blocks:          53222
ARIN Region origin ASes present in the Internet Routing Table:   6693
ARIN Region origin ASes announcing only one prefix:              1994
ARIN Region transit ASes present in the Internet Routing Table:   697
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        12
Number of ARIN addresses announced to Internet:             198605942
    Equivalent to 11 /8s, 214 /16s and 124 /24s
    Percentage of available ARIN address space announced:        78.9

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, 64/7, 66/7, 199/8, 200/8, 204/6,
                       208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                   17384
Prefixes being announced from the RIPE address blocks:          13517
RIPE Region origin ASes present in the Internet Routing Table:   3047
RIPE Region origin ASes announcing only one prefix:              1570
RIPE Region transit ASes present in the Internet Routing Table:   555
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        16
Number of RIPE addresses announced to Internet:              99124106
    Equivalent to 5 /8s, 232 /16s and 131 /24s
    Percentage of available RIPE address space announced:        65.6

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, 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     1722       1329       Telstra
 2764      430        328       connect.com.au pty ltd
 2907      365       1767       SINET Japan
  703      353        394       UUNET Technologies, Inc.
 4755      339        221       VSNL India
 7539      222        195       TANet2, sponsored by NSC, TAI
 4134      200       1419       Data Communications Bureau
 7474      194        171       Optus Communications
 4766      173       1258       KORnet Powered BY Korea Telec
 4740      160         37       Ozemail
 7657      156         25       The Internet Group Limited
 1237      152        140       System Engineering Research I
17561      151        137       Internet service provision to
 7545      149         21       TPG Internet Pty Ltd
 9443      132         47       INTERNETPRIMUS-AS-A
 4786      125         14       NetConnect Communications Pty
 7586      118         10       Paradox Digital Pty. Ltd
 4763      115         85       Telstra New Zealand
 7617      114         91       One.Net Pty Ltd
 9583      112         62       Satyam Infoway Ltd.,

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

  ASN   No of nets  /20 equiv  Description
 3301      902        950       TeliaNet Sweden
  702      650       1755       UUNET Technologies, Inc.
15870      441          7       Global Center Frankfurt
 1257      283        503       Swipnet AB
 1270      265        864       UUNET Germany
  680      226       2007       Deutschef Forschurgsnetz
15878      221          8       Global Center Paris
 3215      220        471       RAIN
  719      186        291       LANLINK
  786      185       1904       JANET IP Service
 5515      175        638       Sonera Finland
 3320      164       1418       Deutsche Telekom AG
 5400      136         67       Concert Internet Plus Europea
 8708      130         14       Romania Data System
 3303      129        592       Swisscom
  517      128        273       Xlink
 2856      116        775       BTnet UK Regional network
 1267       99       1954       IUnet S.p.A
 1290       98        407       PSINet UK Ltd.
 3269       90        568       TELECOM ITALIA

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

  ASN   No of nets  /20 equiv  Description
  701     2415       7538       UUNET Technologies, Inc.
 7018     1800       7007       AT&T
  705     1488        129       UUNET Technologies, Inc.
    1      924       8919       BBN Planet
 7046      811       1131       UUNET Technologies, Inc.
 3491      674        392       CAIS Internet
 1239      658       3274       Sprint ICM-Inria
 2914      564       2335       Verio, Inc.
 3561      543       2434       Cable & Wireless USA
  690      487         66       Merit Network
18994      474         11       Global Crossing 
 4293      472        100       Cable & Wireless USA
  209      463       1829       Qwest
 2149      414        489       Performance Systems, Inc.
 2548      406        997       Digital Express Group, Inc.
 3908      391        533       Supernet, Inc.
 3549      344       1064       Global Crossing
 5106      333        132       Ameritech Advanced Data Servi
11371      333        100       Rhythms NetConnections
 3967      331        454       Exodus Communication

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

  ASN   No of nets  /20 equiv  Description
  701     2415       7538       UUNET Technologies, Inc.
 7018     1800       7007       AT&T
 1221     1722       1329       Telstra
  705     1488        129       UUNET Technologies, Inc.
    1      924       8919       BBN Planet
 3301      902        950       TeliaNet Sweden
 7046      811       1131       UUNET Technologies, Inc.
 3491      674        392       CAIS Internet
 1239      658       3274       Sprint ICM-Inria
  702      650       1755       UUNET Technologies, Inc.
 2914      564       2335       Verio, Inc.
 3561      543       2434       Cable & Wireless USA
  690      487         66       Merit Network
18994      474         11       Global Crossing 
 4293      472        100       Cable & Wireless USA
  209      463       1829       Qwest
15870      441          7       Global Center Frankfurt
 2764      430        328       connect.com.au pty ltd
 2149      414        489       Performance Systems, Inc.
 2548      406        997       Digital Express Group, Inc.

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

Bad AS  Designation  Network              Transit AS  Description
16998   UNALLOCATED   63.127.205.0/24       1239       Sprint ICM-Inria
16998   UNALLOCATED   63.170.150.0/24       1239       Sprint ICM-Inria
16998   UNALLOCATED   63.175.19.0/24        1239       Sprint ICM-Inria
60002   RESERVED      64.76.148.0/24       19583       IMPSAT CHILE S.A. 
  578   UNALLOCATED   64.230.243.96/27       577       Bell Canada
 2027   UNALLOCATED   150.185.128.0/18      8143       Publicom Corp.
 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, 
16028   UNALLOCATED   193.251.160.0/24      5511       OPENTRANSIT
16028   UNALLOCATED   193.251.162.0/24      5511       OPENTRANSIT
16028   UNALLOCATED   193.251.163.0/24      5511       OPENTRANSIT
16028   UNALLOCATED   193.251.164.0/24      5511       OPENTRANSIT
65000   PRIVATE       198.208.54.0/24       7046       UUNET Technologies, 
65000   PRIVATE       198.208.187.0/24      7046       UUNET Technologies, 
 5978   UNALLOCATED   199.211.157.0/24       303       Navy Personnel R & D
 5978   UNALLOCATED   199.211.162.0/24       303       Navy Personnel R & D
 9700   UNALLOCATED   202.30.50.0/23        3786       DACOM Corporation
65500   PRIVATE       203.166.86.0/24      10084       Western Australian I
 9700   UNALLOCATED   203.255.208.0/24      3786       DACOM Corporation
 9700   UNALLOCATED   203.255.209.0/24      3786       DACOM Corporation
 9700   UNALLOCATED   203.255.210.0/24      3786       DACOM Corporation
 9700   UNALLOCATED   203.255.211.0/24      3786       DACOM Corporation
 5978   UNALLOCATED   204.222.228.0/24       303       Navy Personnel R & D
 5978   UNALLOCATED   204.222.229.0/24       303       Navy Personnel R & D
16998   UNALLOCATED   206.67.166.0/24       1239       Sprint ICM-Inria
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 
12762   UNALLOCATED   212.51.224.0/21       8437       UTA.AT Backbone
12762   UNALLOCATED   212.51.232.0/21       8447       HIGHWAY194 Autonomo
12762   UNALLOCATED   212.51.240.0/21       5385       TELEPORT Consulting
12762   UNALLOCATED   212.51.248.0/21       8437       UTA.AT Backbone

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

Network            Origin AS  Description
128.65.0.0/16         3463     ACES Research Inc
128.199.0.0/16        5519     GX Networks (former
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
139.157.0.0/16        5515     Sonera Finland
144.7.0.0/16           701     UUNET Technologies, Inc.
146.104.0.0/16        1136     SURFnet BV
153.34.0.0/15          701     UUNET Technologies, Inc.
153.36.0.0/14          701     UUNET Technologies, Inc.
158.0.0.0/13           568     DISO-UNRRA
172.32.1.0/25         1221     Telstra
172.122.0.0/16         701     UUNET Technologies, Inc.
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        /8:20       /9:5       /10:6       /11:9       /12:32      
/13:76      /14:207     /15:346     /16:6902    /17:1170    /18:2157    
/19:6689    /20:5195    /21:4526    /22:6825    /23:8784    /24:62286   
/25:269     /26:439     /27:479     /28:485     /29:382     /30:324     
/31:1       /32:57      

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

   9:3        12:750      13:10       15:1        17:3        24:675    
  26:1        32:125      38:572      44:3        47:1        53:2      
  55:1        57:13       61:31       62:130      63:1964     64:1673   
  65:998      66:340      80:2       128:38      129:134     130:23     
 131:39      132:9       133:1       134:169     135:12      136:16     
 137:122     138:246     139:44      140:139     141:158     142:69     
 143:41      144:135     145:9       146:141     147:135     148:94     
 149:121     150:36      151:298     152:582     153:32      154:19     
 155:78      156:52      157:110     158:181     159:75      160:27     
 161:53      162:68      163:139     164:97      165:129     166:203    
 167:140     168:98      169:35      170:253     171:4       192:5434   
 193:1858    194:2052    195:747     196:410     198:3662    199:3372   
 200:2100    201:1       202:2500    203:4830    204:3361    205:2269   
 206:2838    207:2969    208:3042    209:3207    210:551     211:125    
 212:823     213:804     214:9       215:11      216:3057    217:352    


End of report



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