Weekly Routing Table Report

Routing Analysis cscora at dev.apnic.net
Thu Jun 28 14:06:25 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   29 Jun, 2001

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

BGP routing table entries examined:                            104794
Origin ASes present in the Internet Routing Table:              11171
Origin ASes announcing only one prefix:                          4078
Transit ASes present in the Internet Routing Table:              1506
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:             17
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:                 1220255575
    Equivalent to 72 /8s, 187 /16s and 159 /24s
    Percentage of available address space announced:             32.9
    Percentage of allocated address space announced:             63.9
    Percentage of available address space allocated:             51.5
Total number of prefixes smaller than registry allocations:     71483

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

Prefixes being announced by APNIC Region ASes:                  15432
Prefixes being announced from the APNIC address blocks:         13952
APNIC Region origin ASes present in the Internet Routing Table:  1300
APNIC Region origin ASes announcing only one prefix:              460
APNIC Region transit ASes present in the Internet Routing Table:  226
Average APNIC Region AS path length visible:                      5.1
    Max APNIC Region AS path length visible:                       16
Number of APNIC addresses announced to Internet:             71940112
    Equivalent to 4 /8s, 73 /16s and 184 /24s
    Percentage of available APNIC address space announced:       70.7

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:                   72256
Prefixes being announced from the ARIN address blocks:          51765
ARIN Region origin ASes present in the Internet Routing Table:   6765
ARIN Region origin ASes announcing only one prefix:              1997
ARIN Region transit ASes present in the Internet Routing Table:   712
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        16
Number of ARIN addresses announced to Internet:             199482914
    Equivalent to 11 /8s, 227 /16s and 222 /24s
    Percentage of available ARIN address space announced:        79.3

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

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

Prefixes being announced by RIPE Region ASes:                   17106
Prefixes being announced from the RIPE address blocks:          13174
RIPE Region origin ASes present in the Internet Routing Table:   3115
RIPE Region origin ASes announcing only one prefix:              1621
RIPE Region transit ASes present in the Internet Routing Table:   567
Average RIPE Region AS path length visible:                       5.8
    Max RIPE Region AS path length visible:                        16
Number of RIPE addresses announced to Internet:             100641302
    Equivalent to 5 /8s, 255 /16s and 170 /24s
    Percentage of available RIPE address space announced:        66.7

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       1346       Telstra
 2764      428        329       connect.com.au pty ltd
 2907      367       1767       SINET Japan
  703      354        360       UUNET Technologies, Inc.
 4755      299        171       VSNL India
 7474      234        292       Optus Communications
 4134      228       1509       Data Communications Bureau
 7539      209        183       TANet2, sponsored by NSC, TAI
 4766      177       1258       KORnet Powered BY Korea Telec
 4740      151         36       Ozemail
 7545      143         21       TPG Internet Pty Ltd
 9443      133         38       INTERNETPRIMUS-AS-A
 4786      127         15       NetConnect Communications Pty
 7657      125         23       The Internet Group Limited
 4763      117         85       Telstra New Zealand
17561      115        151       Internet service provision to
 9583      113         59       Satyam Infoway Ltd.,
 7586      112         17       Paradox Digital Pty. Ltd
 4713      107        869       NTT-OCNET
 4732      106        358       DDI Corporation

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

  ASN   No of nets  /20 equiv  Description
  702      661       1837       UUNET Technologies, Inc.
15870      430         12       Global Center Frankfurt
 3301      413        917       TeliaNet Sweden
 1257      282        504       Swipnet AB
 1270      258        870       UUNET Germany
  680      230       2053       Deutschef Forschurgsnetz
15878      217          9       Global Center Paris
 3215      216        495       RAIN
  719      185        291       LANLINK
  786      184       1904       JANET IP Service
 5515      175        654       Sonera Finland
 3320      167       1410       Deutsche Telekom AG
 8708      141         14       Romania Data System
 5400      138         68       Concert Internet Plus Europea
  517      130        272       Xlink
 3303      130        576       Swisscom
 2856      120        776       BTnet UK Regional network
 1267      106       1986       IUnet S.p.A
 1290       95        406       PSINet UK Ltd.
 3269       93        664       TELECOM ITALIA

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

  ASN   No of nets  /20 equiv  Description
  701     2473       8054       UUNET Technologies, Inc.
 7018      954       7103       AT&T
    1      912       8730       BBN Planet
 7046      738       1087       UUNET Technologies, Inc.
 1239      660       3299       Sprint ICM-Inria
 3491      555        385       CAIS Internet
 2914      546       2328       Verio, Inc.
  690      542         78       Merit Network
 4293      498        101       Cable & Wireless USA
 3908      492        567       Supernet, Inc.
  209      485       1856       Qwest
 3561      469       2452       Cable & Wireless USA
18994      415         10       Global Crossing 
 2548      414        980       Digital Express Group, Inc.
 3549      387        849       Global Crossing
 2149      384        391       Performance Systems, Inc.
  705      342         57       UUNET Technologies, Inc.
11371      334        100       Rhythms NetConnections
 3967      327        453       Exodus Communication
15290      322        370       AT&T Canada IES 

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

  ASN   No of nets  /20 equiv  Description
  701     2473       8054       UUNET Technologies, Inc.
 1221     1722       1346       Telstra
 7018      954       7103       AT&T
    1      912       8730       BBN Planet
 7046      738       1087       UUNET Technologies, Inc.
  702      661       1837       UUNET Technologies, Inc.
 1239      660       3299       Sprint ICM-Inria
 3491      555        385       CAIS Internet
 2914      546       2328       Verio, Inc.
  690      542         78       Merit Network
 4293      498        101       Cable & Wireless USA
 3908      492        567       Supernet, Inc.
  209      485       1856       Qwest
 3561      469       2452       Cable & Wireless USA
15870      430         12       Global Center Frankfurt
 2764      428        329       connect.com.au pty ltd
18994      415         10       Global Crossing 
 2548      414        980       Digital Express Group, Inc.
 3301      413        917       TeliaNet Sweden
 3549      387        849       Global Crossing

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

Bad AS  Designation  Network              Transit AS  Description
  578   UNALLOCATED   64.230.242.0/27        577       Bell Canada
 2027   UNALLOCATED   150.185.128.0/18      8143       Publicom Corp.
 6020   UNALLOCATED   164.233.0.0/16         209       Qwest
 5962   UNALLOCATED   192.41.249.0/24        721       DLA Systems Automati
 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, 
 9700   UNALLOCATED   202.30.50.0/23        3786       DACOM Corporation
 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
 5954   UNALLOCATED   204.130.191.0/24       721       DLA Systems Automati
 5979   UNALLOCATED   206.197.206.0/24       721       DLA Systems Automati
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 

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

Network            Origin AS  Description
128.65.0.0/16         3463     ACES Research Inc
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.
153.34.0.0/15          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     >>UNKNOWN<<
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        /8:19       /9:5       /10:6       /11:9       /12:32      
/13:78      /14:212     /15:352     /16:6895    /17:1188    /18:2185    
/19:6725    /20:5319    /21:4487    /22:6787    /23:8637    /24:59443   
/25:294     /26:376     /27:508     /28:463     /29:372     /30:316     
/31:1       /32:85      

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

  ASN   No of nets  Total ann.   Description
  701     1612          2473      UUNET Technologies, Inc.
 1221     1565          1722      Telstra
 7046      573           738      UUNET Technologies, Inc.
  690      539           542      Merit Network
 3491      530           555      CAIS Internet
 4293      481           498      Cable & Wireless USA
 7018      459           954      AT&T
    1      429           912      BBN Planet
15870      426           430      Global Center Frankfurt
  702      417           661      UUNET Technologies, Inc.
18994      413           415      Global Crossing 
 3908      390           492      Supernet, Inc.
 2764      384           428      connect.com.au pty ltd
  209      365           485      Qwest
 1239      344           660      Sprint ICM-Inria
11371      321           334      Rhythms NetConnections
18993      316           320      Global Crossing 
 2548      306           414      Digital Express Group, Inc.
  705      298           342      UUNET Technologies, Inc.
  703      288           354      UUNET Technologies, Inc.

Advertised prefixes smaller than registry allocations (per /8 block)
--------------------------------------------------------------------

   4:1         6:12        9:6        12:569      13:13       15:11     
  17:13       20:4        24:867      26:1        32:33       35:4      
  38:464      40:2        44:11       45:1        47:38       52:2      
  53:4        55:1        56:5        57:16       61:94       62:202    
  63:2552     64:2731     65:1093     66:719      80:17      128:59     
 129:200     130:54      131:63      132:39      133:1       134:231    
 135:16      136:36      137:176     138:277     139:85      140:247    
 141:226     142:113     143:98      144:189     145:31      146:192    
 147:145     148:203     149:129     150:59      151:262     152:1117   
 153:38      154:27      155:143     156:75      157:157     158:101    
 159:104     160:73      161:136     162:162     163:217     164:181    
 165:239     166:256     167:153     168:199     169:55      170:435    
 171:20      172:1       192:34      193:2559    194:2726    195:1027   
 196:4       198:6       199:3857    200:2716    202:3735    203:5852   
 204:4343    205:2903    206:4127    207:3729    208:5217    209:4125   
 210:778     211:282     212:1170    213:619     216:4748    217:417    
 218:3      

End of report



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