Weekly Routing Table Report

Routing Analysis cscora at dev.apnic.net
Thu Jul 26 14:19:31 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   27 Jul, 2001

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

BGP routing table entries examined:                            105607
Origin ASes present in the Internet Routing Table:              11377
Origin ASes announcing only one prefix:                          4157
Transit ASes present in the Internet Routing Table:              1500
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:             55
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    18
Number of addresses announced to Internet:                 1246191288
    Equivalent to 74 /8s, 71 /16s and 94 /24s
    Percentage of available address space announced:             33.6
    Percentage of allocated address space announced:             65.3
    Percentage of available address space allocated:             51.5
Total number of prefixes smaller than registry allocations:     71945

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

Prefixes being announced by APNIC Region ASes:                  15682
Prefixes being announced from the APNIC address blocks:         14143
APNIC Region origin ASes present in the Internet Routing Table:  1330
APNIC Region origin ASes announcing only one prefix:              460
APNIC Region transit ASes present in the Internet Routing Table:  222
Average APNIC Region AS path length visible:                      5.1
    Max APNIC Region AS path length visible:                       14
Number of APNIC addresses announced to Internet:             74489733
    Equivalent to 4 /8s, 112 /16s and 159 /24s
    Percentage of available APNIC address space announced:       73.2

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:                   72516
Prefixes being announced from the ARIN address blocks:          52358
ARIN Region origin ASes present in the Internet Routing Table:   6855
ARIN Region origin ASes announcing only one prefix:              2012
ARIN Region transit ASes present in the Internet Routing Table:   707
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        12
Number of ARIN addresses announced to Internet:             200791200
    Equivalent to 11 /8s, 247 /16s and 212 /24s
    Percentage of available ARIN address space announced:        79.8

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 - 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:                   17406
Prefixes being announced from the RIPE address blocks:          13497
RIPE Region origin ASes present in the Internet Routing Table:   3208
RIPE Region origin ASes announcing only one prefix:              1685
RIPE Region transit ASes present in the Internet Routing Table:   573
Average RIPE Region AS path length visible:                       5.8
    Max RIPE Region AS path length visible:                        17
Number of RIPE addresses announced to Internet:             102374143
    Equivalent to 6 /8s, 26 /16s and 26 /24s
    Percentage of available RIPE address space announced:        67.8

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     1669       1330       Telstra
 2764      442        362       connect.com.au pty ltd
  703      402        367       UUNET Technologies, Inc.
 2907      367       1784       SINET Japan
 4755      298        163       VSNL India
 7474      245        293       Optus Communications
 4134      233       1618       Data Communications Bureau
 7539      209        175       TANet2, sponsored by NSC, TAI
 4766      176       1336       KORnet Powered BY Korea Telec
 7545      145         21       TPG Internet Pty Ltd
 9443      143         40       INTERNETPRIMUS-AS-A
 4786      129         17       NetConnect Communications Pty
 4763      119         69       Telstra New Zealand
17561      115        151       Internet service provision to
 7586      114         17       Paradox Digital Pty. Ltd
 4812      111        279       Shanghai Telecom Company
 7657      111         22       The Internet Group Limited
 4713      109        878       NTT-OCNET
 4740      109         15       Ozemail
 4732      108        358       DDI Corporation

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

  ASN   No of nets  /20 equiv  Description
  702      680       1831       UUNET Technologies, Inc.
 3301      430        918       TeliaNet Sweden
15870      412         12       Global Center Frankfurt
 1257      280        520       Swipnet AB
 1270      244        869       UUNET Germany
  680      229       2069       Deutschef Forschurgsnetz
 3215      227        496       RAIN
15878      202          8       Global Center Paris
  719      185        291       LANLINK
  786      184       1890       JANET IP Service
 5515      176        654       Sonera Finland
 3320      175       1411       Deutsche Telekom AG
 8708      153         15       Romania Data System
 5400      139         66       Concert Internet Plus Europea
 3303      131        576       Swisscom
  517      125        272       Xlink
 2856      123        776       BTnet UK Regional network
 5549      117         66       Seicom Computer Gmb
 8503      108          3       PCNET - PCNET DATA Network
 1267      107       1989       IUnet S.p.A

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

  ASN   No of nets  /20 equiv  Description
  701     2309       8321       UUNET Technologies, Inc.
 7018      980       7031       AT&T
    1      902       8699       BBN Planet
 7046      755       1072       UUNET Technologies, Inc.
 1239      694       3296       Sprint ICM-Inria
 2914      516       2319       Verio, Inc.
  690      507         77       Merit Network
 4293      484         98       Cable & Wireless USA
  209      476       1868       Qwest
 2551      452        651       NETCOM On-Line Communication 
 3561      430       2430       Cable & Wireless USA
 3908      415        487       Supernet, Inc.
 2548      413       1010       Digital Express Group, Inc.
 2149      408        345       Performance Systems, Inc.
18994      392         10       Global Crossing 
 3549      357        815       Global Crossing
 4323      339        314       Time Warner Communications, I
11371      337        100       Rhythms NetConnections
 3967      334        454       Exodus Communication
15290      327        340       AT&T Canada IES 

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

  ASN   No of nets  /20 equiv  Description
  701     2309       8321       UUNET Technologies, Inc.
 1221     1669       1330       Telstra
 7018      980       7031       AT&T
    1      902       8699       BBN Planet
 7046      755       1072       UUNET Technologies, Inc.
 1239      694       3296       Sprint ICM-Inria
  702      680       1831       UUNET Technologies, Inc.
 2914      516       2319       Verio, Inc.
  690      507         77       Merit Network
 4293      484         98       Cable & Wireless USA
  209      476       1868       Qwest
 2551      452        651       NETCOM On-Line Communication 
 2764      442        362       connect.com.au pty ltd
 3301      430        918       TeliaNet Sweden
 3561      430       2430       Cable & Wireless USA
 3908      415        487       Supernet, Inc.
 2548      413       1010       Digital Express Group, Inc.
15870      412         12       Global Center Frankfurt
 2149      408        345       Performance Systems, Inc.
  703      402        367       UUNET Technologies, Inc.

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

Bad AS  Designation  Network              Transit AS  Description
17680   UNALLOCATED   61.213.48.0/20       10009       ARE Works,Inc.
18541   UNALLOCATED   63.166.66.0/24        1239       Sprint ICM-Inria
18541   UNALLOCATED   63.169.205.0/24       1239       Sprint ICM-Inria
19714   UNALLOCATED   64.166.88.0/24         701       UUNET Technologies, 
65501   PRIVATE       64.243.116.0/24      16890       K&G Network Services
19714   UNALLOCATED   65.200.78.0/23         701       UUNET Technologies, 
 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
19062   UNALLOCATED   192.197.96.0/20       1691       BCTEL Advanced Commu
65460   PRIVATE       192.231.11.0/24       7018       AT&T
 5757   UNALLOCATED   192.239.13.0/24        701       UUNET Technologies, 
20938   UNALLOCATED   195.13.38.0/23        8246       Internet Technologie
17803   UNALLOCATED   202.68.128.0/19       4755       VSNL India
17803   UNALLOCATED   202.68.134.0/24       4755       VSNL India
17803   UNALLOCATED   202.68.135.0/24       4755       VSNL India
17803   UNALLOCATED   202.68.136.0/24       4755       VSNL India
17803   UNALLOCATED   202.68.138.0/24       4755       VSNL India
17803   UNALLOCATED   202.68.139.0/24       4755       VSNL India
17803   UNALLOCATED   202.68.140.0/24       4755       VSNL India
17803   UNALLOCATED   202.68.145.0/24       4755       VSNL India
17803   UNALLOCATED   202.68.146.0/24       4755       VSNL India
17803   UNALLOCATED   202.68.147.0/24       4755       VSNL India
17803   UNALLOCATED   202.68.148.0/24       4755       VSNL India
17803   UNALLOCATED   202.68.150.0/24       4755       VSNL India
17803   UNALLOCATED   202.157.190.0/23      4755       VSNL India
17657   UNALLOCATED   202.161.160.0/20      9653       AGNS HongKong NET
 4831   UNALLOCATED   202.172.32.0/20       9740       Cable & Wireless Net
21637   UNALLOCATED   204.1.98.0/24         2914       Verio, Inc.
21637   UNALLOCATED   204.1.106.0/24        2914       Verio, Inc.
21637   UNALLOCATED   204.1.107.0/24        2914       Verio, Inc.
21637   UNALLOCATED   204.1.108.0/24        2914       Verio, Inc.
21637   UNALLOCATED   204.1.109.0/24        2914       Verio, Inc.
21637   UNALLOCATED   204.27.68.0/24        2914       Verio, Inc.
21637   UNALLOCATED   204.27.76.0/24        2914       Verio, Inc.
21637   UNALLOCATED   204.27.94.0/24        2914       Verio, Inc.
21637   UNALLOCATED   204.27.95.0/24        2914       Verio, Inc.
21637   UNALLOCATED   204.27.96.0/24        2914       Verio, Inc.
21637   UNALLOCATED   204.27.100.0/24       2914       Verio, Inc.
21637   UNALLOCATED   204.27.104.0/24       2914       Verio, Inc.
21637   UNALLOCATED   204.27.106.0/24       2914       Verio, Inc.
21637   UNALLOCATED   204.27.107.0/24       2914       Verio, Inc.
21637   UNALLOCATED   204.27.109.0/24       2914       Verio, Inc.
21637   UNALLOCATED   204.27.115.0/24       2914       Verio, Inc.
20413   UNALLOCATED   204.108.128.0/17      6347       SAVVIS Communication
19551   UNALLOCATED   204.229.224.0/22      6226       US West Communicatio
20413   UNALLOCATED   207.8.234.0/24        6347       SAVVIS Communication
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 
20413   UNALLOCATED   207.106.119.0/24      6347       SAVVIS Communication
19322   UNALLOCATED   208.44.17.0/24         209       Qwest
21879   UNALLOCATED   208.253.207.96/27    16467       NextWeb, Inc. 
21879   UNALLOCATED   209.81.62.0/24         701       UUNET Technologies, 
65515   PRIVATE       212.110.142.0/24      5593       CRIS-AS

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

Network            Origin AS  Description
82.105.0.0/16         3269     TELECOM ITALIA
82.105.128.0/17       3269     TELECOM ITALIA
99.0.0.0/8            9638     National Agricultural Coopera
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     US DOD NIC Unregistered
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      
/13:82      /14:218     /15:362     /16:6921    /17:1189    /18:2252    
/19:6762    /20:5492    /21:4560    /22:6837    /23:8663    /24:59919   
/25:291     /26:363     /27:430     /28:435     /29:352     /30:336     
/31:1       /32:70      

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

  ASN   No of nets  Total ann.   Description
 1221     1516          1669      Telstra
  701     1444          2309      UUNET Technologies, Inc.
 7046      589           755      UUNET Technologies, Inc.
  690      504           507      Merit Network
 7018      500           980      AT&T
 4293      468           484      Cable & Wireless USA
  702      429           680      UUNET Technologies, Inc.
    1      423           902      BBN Planet
15870      408           412      Global Center Frankfurt
 2764      397           442      connect.com.au pty ltd
18994      390           392      Global Crossing 
 1239      380           694      Sprint ICM-Inria
  209      356           476      Qwest
 2551      342           452      NETCOM On-Line Communication 
  703      333           402      UUNET Technologies, Inc.
11371      324           337      Rhythms NetConnections
 3908      320           415      Supernet, Inc.
18993      305           309      Global Crossing 
 2548      303           413      Digital Express Group, Inc.
 4323      290           339      Time Warner Communications, I

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

   4:1         6:12        9:6        12:585      13:13       15:11     
  17:13       20:7        24:850      26:1        32:43       35:3      
  38:20       40:2        43:4        44:10       45:1        47:40     
  52:2        53:4        55:1        56:5        57:15       61:137    
  62:196      63:2520     64:2753     65:1036     66:773      80:44     
 128:61      129:182     130:54      131:67      132:42      133:1      
 134:240     135:13      136:37      137:180     138:233     139:86     
 140:259     141:225     142:118     143:98      144:209     145:32     
 146:195     147:179     148:250     149:124     150:63      151:264    
 152:965     153:40      154:16      155:141     156:92      157:156    
 158:114     159:83      160:93      161:146     162:157     163:248    
 164:206     165:252     166:262     167:173     168:208     169:54     
 170:449     171:20      172:1       192:32      193:2624    194:2768   
 195:1046    196:3       198:6       199:3942    200:2751    202:3775   
 203:5804    204:4404    205:2948    206:4144    207:3688    208:5215   
 209:4415    210:795     211:335     212:1121    213:711     216:4760   
 217:461     218:3      

End of report



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