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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   06 Jul, 2001

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

BGP routing table entries examined:                            103233
Origin ASes present in the Internet Routing Table:              11185
Origin ASes announcing only one prefix:                          4127
Transit ASes present in the Internet Routing Table:              1520
Average AS path length visible in the Internet Routing Table:     5.5
    Max AS path length visible:                                    17
Illegal AS announcements present in the Routing Table:             20
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    13
Number of addresses announced to Internet:                 1219205911
    Equivalent to 72 /8s, 171 /16s and 155 /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:     69965

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

Prefixes being announced by APNIC Region ASes:                  15010
Prefixes being announced from the APNIC address blocks:         13571
APNIC Region origin ASes present in the Internet Routing Table:  1289
APNIC Region origin ASes announcing only one prefix:              473
APNIC Region transit ASes present in the Internet Routing Table:  224
Average APNIC Region AS path length visible:                      5.8
    Max APNIC Region AS path length visible:                       16
Number of APNIC addresses announced to Internet:             71158591
    Equivalent to 4 /8s, 61 /16s and 203 /24s
    Percentage of available APNIC address space announced:       70.0

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:                   71367
Prefixes being announced from the ARIN address blocks:          51264
ARIN Region origin ASes present in the Internet Routing Table:   6783
ARIN Region origin ASes announcing only one prefix:              2004
ARIN Region transit ASes present in the Internet Routing Table:   719
Average ARIN Region AS path length visible:                       5.3
    Max ARIN Region AS path length visible:                        16
Number of ARIN addresses announced to Internet:             199350017
    Equivalent to 11 /8s, 225 /16s and 215 /24s
    Percentage of available ARIN address space announced:        79.2

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:                   16856
Prefixes being announced from the RIPE address blocks:          12951
RIPE Region origin ASes present in the Internet Routing Table:   3124
RIPE Region origin ASes announcing only one prefix:              1650
RIPE Region transit ASes present in the Internet Routing Table:   576
Average RIPE Region AS path length visible:                       6.3
    Max RIPE Region AS path length visible:                        17
Number of RIPE addresses announced to Internet:             100222080
    Equivalent to 5 /8s, 249 /16s and 68 /24s
    Percentage of available RIPE address space announced:        66.4

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     1557       1309       Telstra
 2764      435        345       connect.com.au pty ltd
  703      385        382       UUNET Technologies, Inc.
 2907      368       1783       SINET Japan
 4755      285        165       VSNL India
 7474      237        293       Optus Communications
 4134      217       1555       Data Communications Bureau
 4766      175       1242       KORnet Powered BY Korea Telec
 7539      155        175       TANet2, sponsored by NSC, TAI
 4786      145         16       NetConnect Communications Pty
 7545      142         21       TPG Internet Pty Ltd
 9443      132         38       INTERNETPRIMUS-AS-A
 4740      117         16       Ozemail
 7586      116         18       Paradox Digital Pty. Ltd
 7657      115         22       The Internet Group Limited
17561      115        151       Internet service provision to
 9583      111         60       Satyam Infoway Ltd.,
 4713      107        869       NTT-OCNET
 4732      106        358       DDI Corporation
 9797      103         32       Asia Online Australia

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

  ASN   No of nets  /20 equiv  Description
  702      656       1828       UUNET Technologies, Inc.
 3301      427        918       TeliaNet Sweden
15870      427         12       Global Center Frankfurt
 1257      278        504       Swipnet AB
 1270      257        870       UUNET Germany
  680      230       2053       Deutschef Forschurgsnetz
 3215      214        495       RAIN
15878      212          8       Global Center Paris
  719      186        291       LANLINK
  786      184       1904       JANET IP Service
 5515      175        654       Sonera Finland
 3320      171       1410       Deutsche Telekom AG
 8708      147         15       Romania Data System
 5400      133         68       Concert Internet Plus Europea
 3303      129        576       Swisscom
  517      126        272       Xlink
 2856      120        776       BTnet UK Regional network
 1267      101       1970       IUnet S.p.A
 1290       98        406       PSINet UK Ltd.
 3269       92        664       TELECOM ITALIA

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

  ASN   No of nets  /20 equiv  Description
  701     2450       8067       UUNET Technologies, Inc.
 7018      960       7056       AT&T
    1      835       8720       BBN Planet
 7046      739       1089       UUNET Technologies, Inc.
 1239      655       3289       Sprint ICM-Inria
  690      549         79       Merit Network
 2914      518       2314       Verio, Inc.
 4293      497        101       Cable & Wireless USA
  209      474       1876       Qwest
 3561      454       2404       Cable & Wireless USA
 3491      440        378       CAIS Internet
  705      424         62       UUNET Technologies, Inc.
 2149      417        378       Performance Systems, Inc.
 2548      412        980       Digital Express Group, Inc.
18994      410         10       Global Crossing 
 3908      406        582       Supernet, Inc.
 3549      348        813       Global Crossing
 3967      337        455       Exodus Communication
11371      331         99       Rhythms NetConnections
15290      324        358       AT&T Canada IES 

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

  ASN   No of nets  /20 equiv  Description
  701     2450       8067       UUNET Technologies, Inc.
 1221     1557       1309       Telstra
 7018      960       7056       AT&T
    1      835       8720       BBN Planet
 7046      739       1089       UUNET Technologies, Inc.
  702      656       1828       UUNET Technologies, Inc.
 1239      655       3289       Sprint ICM-Inria
  690      549         79       Merit Network
 2914      518       2314       Verio, Inc.
 4293      497        101       Cable & Wireless USA
  209      474       1876       Qwest
 3561      454       2404       Cable & Wireless USA
 3491      440        378       CAIS Internet
 2764      435        345       connect.com.au pty ltd
 3301      427        918       TeliaNet Sweden
15870      427         12       Global Center Frankfurt
  705      424         62       UUNET Technologies, Inc.
 2149      417        378       Performance Systems, Inc.
 2548      412        980       Digital Express Group, Inc.
18994      410         10       Global Crossing 

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

Bad AS  Designation  Network              Transit AS  Description
17675   UNALLOCATED   61.211.160.0/20       3549       Global Crossing
17682   UNALLOCATED   61.213.16.0/20        4713       NTT-OCNET
17682   UNALLOCATED   61.213.32.0/21        4713       NTT-OCNET
 2027   UNALLOCATED   150.185.128.0/18      8143       Publicom Corp.
 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, 
17674   UNALLOCATED   202.6.156.0/22        9225       Level 3 Communicatio
 9700   UNALLOCATED   202.30.50.0/23        3786       DACOM Corporation
17657   UNALLOCATED   202.161.160.0/20      9653       AGNS HongKong NET
 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
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    /17:1180    /18:2170    
/19:6702    /20:5326    /21:4471    /22:6719    /23:8465    /24:58814   
/25:169     /26:262     /27:352     /28:366     /29:309     /30:282     
/31:1       /32:37      

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

  ASN   No of nets  Total ann.   Description
  701     1585          2450      UUNET Technologies, Inc.
 1221     1405          1557      Telstra
 7046      572           739      UUNET Technologies, Inc.
  690      546           549      Merit Network
 4293      480           497      Cable & Wireless USA
 7018      469           960      AT&T
15870      423           427      Global Center Frankfurt
 3491      415           440      CAIS Internet
  702      410           656      UUNET Technologies, Inc.
18994      408           410      Global Crossing 
 2764      390           435      connect.com.au pty ltd
  705      385           424      UUNET Technologies, Inc.
    1      354           835      BBN Planet
  209      350           474      Qwest
 1239      336           655      Sprint ICM-Inria
11371      318           331      Rhythms NetConnections
  703      314           385      UUNET Technologies, Inc.
18993      312           316      Global Crossing 
 2548      304           412      Digital Express Group, Inc.
 3908      303           406      Supernet, Inc.

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

   4:1         6:12        9:6        12:568      13:13       15:11     
  17:13       20:4        24:840      26:1        32:34       35:2      
  38:358      40:2        43:4        44:11       45:1        47:38     
  52:2        53:4        55:1        56:5        57:14       61:109    
  62:188      63:2491     64:2670     65:1205     66:733      80:15     
 128:60      129:201     130:54      131:63      132:40      133:1      
 134:235     135:12      136:36      137:176     138:278     139:84     
 140:194     141:225     142:113     143:98      144:179     145:31     
 146:192     147:178     148:204     149:131     150:60      151:265    
 152:812     153:38      154:4       155:145     156:94      157:154    
 158:100     159:102     160:81      161:134     162:162     163:221    
 164:169     165:238     166:255     167:155     168:201     169:53     
 170:434     171:20      172:1       192:15      193:2573    194:2683   
 195:980     198:4       199:3845    200:2693    202:3667    203:5649   
 204:4348    205:2896    206:3969    207:3668    208:5175    209:4051   
 210:719     211:255     212:1096    213:586     216:4638    217:413    
 218:3      

End of report

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