Weekly Routing Table Report

Routing Analysis cscora at dev.apnic.net
Thu Aug 2 14:14:43 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   03 Aug, 2001

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

BGP routing table entries examined:                            106454
Origin ASes present in the Internet Routing Table:              11411
Origin ASes announcing only one prefix:                          4172
Transit ASes present in the Internet Routing Table:              1501
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:             49
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    21
Number of addresses announced to Internet:                 1256502062
    Equivalent to 74 /8s, 228 /16s and 179 /24s
    Percentage of available address space announced:             33.9
    Percentage of allocated address space announced:             65.8
    Percentage of available address space allocated:             51.5
Total number of prefixes smaller than registry allocations:     72717

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

Prefixes being announced by APNIC Region ASes:                  15901
Prefixes being announced from the APNIC address blocks:         14321
APNIC Region origin ASes present in the Internet Routing Table:  1335
APNIC Region origin ASes announcing only one prefix:              453
APNIC Region transit ASes present in the Internet Routing Table:  223
Average APNIC Region AS path length visible:                      5.1
    Max APNIC Region AS path length visible:                       14
Number of APNIC addresses announced to Internet:             75340213
    Equivalent to 4 /8s, 125 /16s and 153 /24s
    Percentage of available APNIC address space announced:       74.1

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:                   73008
Prefixes being announced from the ARIN address blocks:          52892
ARIN Region origin ASes present in the Internet Routing Table:   6873
ARIN Region origin ASes announcing only one prefix:              2030
ARIN Region transit ASes present in the Internet Routing Table:   700
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        17
Number of ARIN addresses announced to Internet:             201006598
    Equivalent to 11 /8s, 251 /16s and 30 /24s
    Percentage of available ARIN address space announced:        79.9

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

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

Prefixes being announced by RIPE Region ASes:                   17542
Prefixes being announced from the RIPE address blocks:          13622
RIPE Region origin ASes present in the Internet Routing Table:   3210
RIPE Region origin ASes announcing only one prefix:              1689
RIPE Region transit ASes present in the Internet Routing Table:   579
Average RIPE Region AS path length visible:                       5.8
    Max RIPE Region AS path length visible:                        15
Number of RIPE addresses announced to Internet:             102604495
    Equivalent to 6 /8s, 29 /16s and 158 /24s
    Percentage of available RIPE address space announced:        68.0

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     1670       1330       Telstra Pty Ltd
 2764      440        362       connect.com.au pty ltd
  703      406        367       UUNET Technologies, Inc. 
 2907      366       1768       SINET Japan
 4755      289        162       Videsh Sanchar Nigam Ltd. Aut
 7474      243        292       Optus Communications Pty Ltd
 4134      239       1714       Data Communications Bureau
 4740      216         27       OzEmail ISP
 7539      209        175       TANet2, sponsored by NSC, TAI
 4766      176       1336       Korea Internet Exchange for "
 7545      149         27       TPG Internet Pty Ltd
 9443      145         40       Primus Telecommunications
 4786      130         17       NetConnect Communications Pty
 4763      121         69       Telstra New Zealand
 4713      115        886       NTT Communications Corporatio
17561      115        151       Internet service provision to
 7586      112         17       Paradox Digital Pty Ltd
 4812      111        279       China Telecom (Group)
 7657      110         22       The Internet Group Limited
 9583      110         61       Satyam Infoway Ltd.,

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

  ASN   No of nets  /20 equiv  Description
  702      691       1794       UUNET Technologies, Inc. 
 3301      429        917       TeliaNet Sweden
15870      412         12       Global Center Frankfurt
 1257      280        521       SWIPnet Swedish IP Network
 1270      241        868       UUNET Germany
 3215      232        497       France Telecom / &Equant
  680      229       2069       DFN-IP service G-WiN
15878      205          8       Global Center Paris
  719      185        291       LANLINK autonomous system
  786      180       1858       The JANET IP Service
 3320      179       1428       Deutsche Telekom AG
 5515      175        654       Sonera Finland Autonomous Sys
 8708      155         15       Romania Data Systems S.A.
 5400      140         67       Concert European Core Network
 3303      131        576       Swisscom Ltd
 2856      126        776       BTnet UK Regional network
 5549      121         66       Nextra Deutschland GmbH + Co.
  517      119        271       KPNQwest Germany GmbH
 8503      110          3       PCNET - PCNET DATA Network
 1267      107       1989       Infostrada S.p.A.

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

  ASN   No of nets  /20 equiv  Description
  701     2312       8113       UUNET Technologies, Inc. 
 7018      969       7014       AT&T 
    1      894       8683       BBN Planet 
 7046      764       1040       UUNET Technologies, Inc. 
 1239      695       3248       Sprint 
 2551      674        648       ICG NetAhead, Inc 
 2914      512       2299       Verio, Inc. 
  690      502         93       Merit Network 
 4293      486         98       Cable & Wireless USA 
  209      470       1899       Qwest 
 3561      423       2397       Cable & Wireless USA 
 3908      422        488       Supernet, Inc. 
 2548      403       1010       Business Internet, Inc. 
 2149      399        329       Performance Systems, Inc. 
18994      390         10       Global Crossing 
 3549      358        818       Global Crossing 
 4323      344        318       Time Warner Communications, I
11371      338        100       Rhythms NetConnections 
15290      337        357       AT&T Canada IES 
 3967      334        454       Exodus Communication 

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

  ASN   No of nets  /20 equiv  Description
  701     2312       8113       UUNET Technologies, Inc. 
 1221     1670       1330       Telstra Pty Ltd
 7018      969       7014       AT&T 
    1      894       8683       BBN Planet 
 7046      764       1040       UUNET Technologies, Inc. 
 1239      695       3248       Sprint 
  702      691       1794       UUNET Technologies, Inc. 
 2551      674        648       ICG NetAhead, Inc 
 2914      512       2299       Verio, Inc. 
  690      502         93       Merit Network 
 4293      486         98       Cable & Wireless USA 
  209      470       1899       Qwest 
 2764      440        362       connect.com.au pty ltd
 3301      429        917       TeliaNet Sweden
 3561      423       2397       Cable & Wireless USA 
 3908      422        488       Supernet, Inc. 
15870      412         12       Global Center Frankfurt
  703      406        367       UUNET Technologies, Inc. 
 2548      403       1010       Business Internet, Inc. 
 2149      399        329       Performance Systems, Inc. 

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

Bad AS  Designation  Network              Transit AS  Description
 6971   UNALLOCATED   64.42.0.0/18          2516       Kokusai Denshin Denw
 6971   UNALLOCATED   64.42.0.0/17          2516       Kokusai Denshin Denw
 6971   UNALLOCATED   64.42.40.0/21         2516       Kokusai Denshin Denw
 6971   UNALLOCATED   64.42.48.0/21         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.60.0/22         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.72.0/21         2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.108.0/22        2914       Verio, Inc. 
 6971   UNALLOCATED   64.42.112.0/20        2914       Verio, Inc. 
 6971   UNALLOCATED   64.87.64.0/19         2516       Kokusai Denshin Denw
65501   PRIVATE       64.243.116.0/24      16890       K&G Network Services
 6971   UNALLOCATED   192.103.229.0/24      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   192.103.230.0/23      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   192.103.232.0/22      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   192.103.236.0/23      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   192.103.237.0/24      2516       Kokusai Denshin Denw
 1877   UNALLOCATED   192.108.196.0/24      1800       SPRINT 
 1877   UNALLOCATED   192.108.213.16/28     1880       Stupi, house man's p
 1877   UNALLOCATED   192.108.214.0/24      1800       SPRINT 
65460   PRIVATE       192.231.11.0/24       7018       AT&T 
 6971   UNALLOCATED   199.249.223.0/24      2516       Kokusai Denshin Denw
 9501   UNALLOCATED   202.53.96.0/24       17443       International Intern
 9501   UNALLOCATED   202.53.96.0/20       17443       International Intern
 9501   UNALLOCATED   202.53.97.0/24       17443       International Intern
 9501   UNALLOCATED   202.53.98.0/24       17443       International Intern
 9501   UNALLOCATED   202.53.99.0/24       17443       International Intern
 9501   UNALLOCATED   202.53.100.0/24      17443       International Intern
 9501   UNALLOCATED   202.53.101.0/24      17443       International Intern
 9501   UNALLOCATED   202.53.102.0/24      17443       International Intern
 4834   UNALLOCATED   202.74.192.0/20       4648       Netgate
17657   UNALLOCATED   202.161.160.0/20      9653       Transit link for Hon
 4831   UNALLOCATED   202.172.32.0/20       9740       Cable & Wireless Net
 6971   UNALLOCATED   206.58.248.0/22       2516       Kokusai Denshin Denw
 6971   UNALLOCATED   206.58.248.0/21       2516       Kokusai Denshin Denw
 6971   UNALLOCATED   206.58.254.0/23       2914       Verio, Inc. 
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 
65515   PRIVATE       212.110.142.0/24      5593       CRIS-AS
 6971   UNALLOCATED   216.105.192.0/20      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.121.224.0/19      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.192.0/21      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.192.0/18      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.200.0/23      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.202.0/23      2914       Verio, Inc. 
 6971   UNALLOCATED   216.174.204.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.174.208.0/20      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.174.232.0/21      2914       Verio, Inc. 
 6971   UNALLOCATED   216.174.240.0/22      2914       Verio, Inc. 
 6971   UNALLOCATED   216.210.128.0/18      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.210.128.0/17      2516       Kokusai Denshin Denw
 6971   UNALLOCATED   216.229.96.0/20       2516       Kokusai Denshin Denw

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

Network            Origin AS  Description
82.104.0.0/16         3269     TELECOM ITALIA
82.104.128.0/17       3269     TELECOM ITALIA
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     DISA NETWORK SERVICES 
172.32.1.0/25         1221     Telstra Pty Ltd
172.122.0.0/16         701     UUNET Technologies, Inc. 
201.115.100.0/24      7018     AT&T 
220.2.228.0/24        3758     SingNet

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

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:20       /9:6       /10:6       /11:9       /12:32      
/13:82      /14:217     /15:366     /16:6932    /17:1195    /18:2264    
/19:6784    /20:5529    /21:4590    /22:6825    /23:8604    /24:60659   
/25:321     /26:401     /27:419     /28:428     /29:349     /30:322     
/31:0       /32:94      

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

  ASN   No of nets  Total ann.   Description
 1221     1518          1670      Telstra Pty Ltd
  701     1448          2312      UUNET Technologies, Inc. 
 7046      601           764      UUNET Technologies, Inc. 
 2551      567           674      ICG NetAhead, Inc 
  690      498           502      Merit Network 
 7018      489           969      AT&T 
 4293      469           486      Cable & Wireless USA 
  702      439           691      UUNET Technologies, Inc. 
    1      421           894      BBN Planet 
15870      408           412      Global Center Frankfurt
 2764      395           440      connect.com.au pty ltd
18994      388           390      Global Crossing 
 1239      379           695      Sprint 
  209      345           470      Qwest 
  703      336           406      UUNET Technologies, Inc. 
 3908      327           422      Supernet, Inc. 
11371      325           338      Rhythms NetConnections 
18993      305           309      Global Crossing 
 4323      295           344      Time Warner Communications, I
 2548      293           403      Business Internet, Inc. 

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

   4:2         6:12        9:6        12:589      13:13       15:11     
  17:13       20:7        24:861      25:2        26:1        32:43     
  35:2        38:20       40:3        43:6        44:10       45:2      
  47:40       52:2        53:4        55:1        56:5        57:15     
  61:155      62:199      63:2511     64:2746     65:999      66:818    
  80:50      128:64      129:178     130:54      131:68      132:41     
 133:1       134:246     135:11      136:37      137:182     138:233    
 139:92      140:259     141:224     142:119     143:86      144:210    
 145:33      146:202     147:178     148:255     149:127     150:62     
 151:262     152:941     153:38      154:26      155:142     156:93     
 157:164     158:115     159:83      160:101     161:145     162:150    
 163:254     164:212     165:256     166:261     167:171     168:209    
 169:55      170:425     171:20      172:1       192:38      193:2635   
 194:2755    195:1114    196:4       198:8       199:4079    200:2908   
 202:3833    203:5857    204:4447    205:2988    206:4218    207:3746   
 208:5205    209:4435    210:804     211:342     212:1132    213:733    
 216:4728    217:473     218:3      

End of report



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