Weekly Routing Table Report

Routing Analysis cscora at dev.apnic.net
Thu Aug 30 14:17:50 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   31 Aug, 2001

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

BGP routing table entries examined:                            106542
Origin ASes present in the Internet Routing Table:              11578
Origin ASes announcing only one prefix:                          4257
Transit ASes present in the Internet Routing Table:              1505
Average AS path length visible in the Internet Routing Table:     5.3
    Max AS path length visible:                                    23
Illegal AS announcements present in the Routing Table:             44
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:                 1214981193
    Equivalent to 72 /8s, 107 /16s and 36 /24s
    Percentage of available address space announced:             32.8
    Percentage of allocated address space announced:             63.1
    Percentage of available address space allocated:             51.9
Total number of prefixes smaller than registry allocations:     72523

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

Prefixes being announced by APNIC Region ASes:                  16099
Prefixes being announced from the APNIC address blocks:         14490
APNIC Region origin ASes present in the Internet Routing Table:  1359
APNIC Region origin ASes announcing only one prefix:              453
APNIC Region transit ASes present in the Internet Routing Table:  224
Average APNIC Region AS path length visible:                      5.1
    Max APNIC Region AS path length visible:                       16
Number of APNIC addresses announced to Internet:             77770730
    Equivalent to 4 /8s, 162 /16s and 175 /24s
    Percentage of available APNIC address space announced:       76.5

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:                   73197
Prefixes being announced from the ARIN address blocks:          52681
ARIN Region origin ASes present in the Internet Routing Table:   6965
ARIN Region origin ASes announcing only one prefix:              2075
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:                        23
Number of ARIN addresses announced to Internet:             207690849
    Equivalent to 12 /8s, 97 /16s and 28 /24s
    Percentage of available ARIN address space announced:        77.4

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, 68/8, 199/8, 200/8, 204/6,
                       208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                   17238
Prefixes being announced from the RIPE address blocks:          13646
RIPE Region origin ASes present in the Internet Routing Table:   3260
RIPE Region origin ASes announcing only one prefix:              1729
RIPE Region transit ASes present in the Internet Routing Table:   583
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        18
Number of RIPE addresses announced to Internet:             106320124
    Equivalent to 6 /8s, 86 /16s and 80 /24s
    Percentage of available RIPE address space announced:        70.4

RIPE AS Blocks         1877 - 1901, 2043, 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     1594       1315       Telstra Pty Ltd
 2764      430        378       connect.com.au pty ltd
  703      427        368       UUNET Technologies, Inc. 
 2907      367       1816       SINET Japan
 4755      297        163       Videsh Sanchar Nigam Ltd. Aut
 4134      243       1761       Data Communications Bureau
 7474      236        289       Optus Communications Pty Ltd
 7539      210        191       TANet2, sponsored by NSC, TAI
 4740      190         22       OzEmail ISP
 4766      179       1320       Korea Internet Exchange for "
 7545      146         25       TPG Internet Pty Ltd
 9443      143         39       Primus Telecommunications
 4786      131         17       NetConnect Communications Pty
 9583      123         62       Satyam Infoway Ltd.,
 4763      120         69       Telstra New Zealand
 4713      116        870       NTT Communications Corporatio
17561      116        167       Internet service provision to
 7586      109         17       Paradox Digital Pty Ltd
 4812      108        277       China Telecom (Group)
17557      106          7       Pakistan Telecom

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

  ASN   No of nets  /20 equiv  Description
  702      725       1782       UUNET Technologies, Inc. 
 3301      431        917       TeliaNet Sweden
 1257      278        522       SWIPnet Swedish IP Network
  680      232       2261       DFN-IP service G-WiN
 3215      221        512       France Telecom / &Equant
 1270      203        826       UUNET Germany
 5515      194        688       Sonera Finland Autonomous Sys
  786      184       1890       The JANET IP Service
 3320      183       1940       Deutsche Telekom AG
15870      182         11       Global Center Frankfurt
  719      180        291       LANLINK autonomous system
 8708      151         19       Romania Data Systems S.A.
15878      143         12       Global Center Paris
 5400      136         66       Concert European Core Network
 3303      132        576       Swisscom Ltd
 2856      125        774       BTnet UK Regional network
 5549      124         66       Nextra Deutschland GmbH + Co.
  517      116        269       KPNQwest Germany GmbH
 1267      103       1989       Infostrada S.p.A.
 3269      100        780       TELECOM ITALIA

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

  ASN   No of nets  /20 equiv  Description
  701     2260       8188       UUNET Technologies, Inc. 
 7018     1030       7164       AT&T 
 3908      905        649       Supernet, Inc. 
    1      877       8660       BBN Planet 
 7046      790       1024       UUNET Technologies, Inc. 
 1239      722       3284       Sprint 
 3967      602        487       Exodus Communication 
  690      516         80       Merit Network 
  209      508       2135       Qwest 
 2914      500       2292       Verio, Inc. 
 4293      473        114       Cable & Wireless USA 
 3561      423       2373       Cable & Wireless USA 
 2548      384        997       Business Internet, Inc. 
 2149      375        311       Performance Systems, Inc. 
 3549      367        835       Global Crossing 
  577      365        634       Bell Advanced Communications 
 4323      349        341       Time Warner Communications, I
15290      346        338       AT&T Canada IES 
 6347      337        360       SAVVIS Communications Corpora
 4151      332       1234       USDA 

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

  ASN   No of nets  /20 equiv  Description
  701     2260       8188       UUNET Technologies, Inc. 
 1221     1594       1315       Telstra Pty Ltd
 7018     1030       7164       AT&T 
 3908      905        649       Supernet, Inc. 
    1      877       8660       BBN Planet 
 7046      790       1024       UUNET Technologies, Inc. 
  702      725       1782       UUNET Technologies, Inc. 
 1239      722       3284       Sprint 
 3967      602        487       Exodus Communication 
  690      516         80       Merit Network 
  209      508       2135       Qwest 
 2914      500       2292       Verio, Inc. 
 4293      473        114       Cable & Wireless USA 
 3301      431        917       TeliaNet Sweden
 2764      430        378       connect.com.au pty ltd
  703      427        368       UUNET Technologies, Inc. 
 3561      423       2373       Cable & Wireless USA 
 2548      384        997       Business Internet, Inc. 
 2149      375        311       Performance Systems, Inc. 
 2907      367       1816       SINET Japan

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

Bad AS  Designation  Network              Transit AS  Description
65534   PRIVATE       62.23.176.0/24        6675       Colt Telecommunicati
65534   PRIVATE       62.23.177.0/24        6675       Colt Telecommunicati
 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         2914       Verio, Inc. 
 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
65000   PRIVATE       138.163.4.0/24         665       Department of Navy 
 2027   UNALLOCATED   150.185.128.0/18      8143       Publicom Corp. 
 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   192.108.199.0/24      1755       Ebone Transit Core
65460   PRIVATE       192.231.11.0/24       7018       AT&T 
65002   PRIVATE       193.77.3.0/24         5603       SiOL Internet d.o.o.
 6971   UNALLOCATED   199.249.223.0/24      2516       Kokusai Denshin Denw
64550   PRIVATE       203.161.39.0/24      17802       Internet AccessFor Q
 6971   UNALLOCATED   206.58.248.0/22       2516       Kokusai Denshin Denw
 6971   UNALLOCATED   206.58.248.0/21       2516       Kokusai Denshin Denw
 6971   UNALLOCATED   206.58.252.0/23       2914       Verio, Inc. 
 6971   UNALLOCATED   206.58.254.0/23       2914       Verio, Inc. 
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 
22259   UNALLOCATED   208.254.175.0/24       701       UUNET Technologies, 
65000   PRIVATE       212.30.88.0/24        5603       SiOL Internet d.o.o.
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
82.105.0.0/16         3269     TELECOM ITALIA
82.105.128.0/17       3269     TELECOM ITALIA
128.65.0.0/16         3463     ACES Research Inc 
132.0.0.0/10           568     DISO-UNRRA 
134.137.0.0/16         400     Headquarters Standard Systems
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 
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        /8:17       /9:5       /10:6       /11:12      /12:32      
/13:84      /14:226     /15:380     /16:6957    /17:1224    /18:2324    
/19:6913    /20:5701    /21:4676    /22:6904    /23:8783    /24:60638   
/25:337     /26:339     /27:270     /28:269     /29:160     /30:201     
/31:1       /32:83      

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

  ASN   No of nets  Total ann.   Description
 1221     1445          1594      Telstra Pty Ltd
  701     1425          2260      UUNET Technologies, Inc. 
 3908      752           905      Supernet, Inc. 
 7046      612           790      UUNET Technologies, Inc. 
 7018      527          1030      AT&T 
  690      513           516      Merit Network 
  702      470           725      UUNET Technologies, Inc. 
 4293      456           473      Cable & Wireless USA 
 3967      422           602      Exodus Communication 
    1      413           877      BBN Planet 
 1239      399           722      Sprint 
 2764      383           430      connect.com.au pty ltd
  209      361           508      Qwest 
  703      357           427      UUNET Technologies, Inc. 
11371      309           322      Rhythms NetConnections 
 4323      294           349      Time Warner Communications, I
 4151      290           332      USDA 
 2548      276           384      Business Internet, Inc. 
 6995      275           289      Bell Atlantic Internet Soluti
  705      273           315      UUNET Technologies, Inc. 

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

   4:2         9:1        12:408      13:10       15:1        17:6      
  20:1        24:766      26:1        32:70       38:8        43:4      
  44:2        53:2        55:1        57:15       61:68       62:137    
  63:1916     64:1341     65:640      66:451      80:36      128:44     
 129:114     130:17      131:42      132:12      133:1       134:151    
 135:8       136:22      137:142     138:200     139:46      140:195    
 141:161     142:63      143:39      144:140     145:11      146:145    
 147:130     148:180     149:89      150:37      151:209     152:390    
 153:32      154:23      155:79      156:84      157:121     158:72     
 159:64      160:46      161:59      162:67      163:158     164:108    
 165:95      166:187     167:142     168:119     169:36      170:286    
 171:2       192:5443    193:1944    194:2041    195:820     196:416    
 198:3670    199:3321    200:2491    201:1       202:2741    203:4607   
 204:3349    205:2263    206:2914    207:2639    208:3066    209:3229   
 210:529     211:126     212:824     213:468     214:8       215:13     
 216:3071    217:387     218:2      

End of report



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