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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   24 Aug, 2001

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

BGP routing table entries examined:                            106866
Origin ASes present in the Internet Routing Table:              11494
Origin ASes announcing only one prefix:                          4222
Transit ASes present in the Internet Routing Table:              1480
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:             40
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:                 1228285731
    Equivalent to 73 /8s, 54 /16s and 39 /24s
    Percentage of available address space announced:             33.1
    Percentage of allocated address space announced:             63.8
    Percentage of available address space allocated:             51.9
Total number of prefixes smaller than registry allocations:     72884

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

Prefixes being announced by APNIC Region ASes:                  15986
Prefixes being announced from the APNIC address blocks:         14353
APNIC Region origin ASes present in the Internet Routing Table:  1356
APNIC Region origin ASes announcing only one prefix:              463
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:                       15
Number of APNIC addresses announced to Internet:             76799457
    Equivalent to 4 /8s, 147 /16s and 221 /24s
    Percentage of available APNIC address space announced:       75.5

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:                   73503
Prefixes being announced from the ARIN address blocks:          53311
ARIN Region origin ASes present in the Internet Routing Table:   6914
ARIN Region origin ASes announcing only one prefix:              2058
ARIN Region transit ASes present in the Internet Routing Table:   692
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        13
Number of ARIN addresses announced to Internet:             206246788
    Equivalent to 12 /8s, 75 /16s and 19 /24s
    Percentage of available ARIN address space announced:        76.8

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

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

Prefixes being announced by RIPE Region ASes:                   17373
Prefixes being announced from the RIPE address blocks:          13566
RIPE Region origin ASes present in the Internet Routing Table:   3229
RIPE Region origin ASes announcing only one prefix:              1701
RIPE Region transit ASes present in the Internet Routing Table:   565
Average RIPE Region AS path length visible:                       5.8
    Max RIPE Region AS path length visible:                        16
Number of RIPE addresses announced to Internet:             106133996
    Equivalent to 6 /8s, 83 /16s and 121 /24s
    Percentage of available RIPE address space announced:        70.3

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     1591       1315       Telstra Pty Ltd
 2764      433        378       connect.com.au pty ltd
  703      419        367       UUNET Technologies, Inc. 
 2907      368       1816       SINET Japan
 4755      298        163       Videsh Sanchar Nigam Ltd. Aut
 4134      240       1743       Data Communications Bureau
 7474      232        289       Optus Communications Pty Ltd
 7539      205        175       TANet2, sponsored by NSC, TAI
 4740      203         25       OzEmail ISP
 4766      188       1361       Korea Internet Exchange for "
 7545      150         25       TPG Internet Pty Ltd
 9443      145         39       Primus Telecommunications
 4786      131         17       NetConnect Communications Pty
 4763      120         69       Telstra New Zealand
17561      116        167       Internet service provision to
 4713      114        869       NTT Communications Corporatio
 9583      113         61       Satyam Infoway Ltd.,
 7586      110         17       Paradox Digital Pty Ltd
 4812      109        278       China Telecom (Group)
 7657      107         22       The Internet Group Limited

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

  ASN   No of nets  /20 equiv  Description
  702      707       1732       UUNET Technologies, Inc. 
 3301      431        917       TeliaNet Sweden
15870      377         12       Global Center Frankfurt
 1257      278        521       SWIPnet Swedish IP Network
  680      232       2261       DFN-IP service G-WiN
 1270      220        845       UUNET Germany
 3215      218        511       France Telecom / &Equant
 5515      193        672       Sonera Finland Autonomous Sys
  786      184       1890       The JANET IP Service
 3320      182       1938       Deutsche Telekom AG
  719      180        291       LANLINK autonomous system
 8708      152         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         64       Nextra Deutschland GmbH + Co.
  517      118        269       KPNQwest Germany GmbH
 1267      103       1989       Infostrada S.p.A.
 3269      103        784       TELECOM ITALIA

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

  ASN   No of nets  /20 equiv  Description
  701     2294       8141       UUNET Technologies, Inc. 
 7018     1017       7120       AT&T 
 3908      895        629       Supernet, Inc. 
    1      877       8662       BBN Planet 
 2551      854        660       ICG NetAhead, Inc 
 7046      772       1041       UUNET Technologies, Inc. 
 1239      715       3257       Sprint 
 3967      604        487       Exodus Communication 
  209      511       2151       Qwest 
 2914      508       2312       Verio, Inc. 
  690      499         93       Merit Network 
 4293      477        115       Cable & Wireless USA 
 3561      422       2399       Cable & Wireless USA 
 2548      387       1000       Business Internet, Inc. 
 2149      386        280       Performance Systems, Inc. 
 3549      369        820       Global Crossing 
18994      356         10       Global Crossing 
  577      348        617       Bell Advanced Communications 
 6347      338        360       SAVVIS Communications Corpora
 4323      337        316       Time Warner Communications, I

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

  ASN   No of nets  /20 equiv  Description
  701     2294       8141       UUNET Technologies, Inc. 
 1221     1591       1315       Telstra Pty Ltd
 7018     1017       7120       AT&T 
 3908      895        629       Supernet, Inc. 
    1      877       8662       BBN Planet 
 2551      854        660       ICG NetAhead, Inc 
 7046      772       1041       UUNET Technologies, Inc. 
 1239      715       3257       Sprint 
  702      707       1732       UUNET Technologies, Inc. 
 3967      604        487       Exodus Communication 
  209      511       2151       Qwest 
 2914      508       2312       Verio, Inc. 
  690      499         93       Merit Network 
 4293      477        115       Cable & Wireless USA 
 2764      433        378       connect.com.au pty ltd
 3301      431        917       TeliaNet Sweden
 3561      422       2399       Cable & Wireless USA 
  703      419        367       UUNET Technologies, Inc. 
 2548      387       1000       Business Internet, Inc. 
 2149      386        280       Performance Systems, Inc. 

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
  578   UNALLOCATED   64.230.242.16/28       577       Bell Advanced Commun
 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 
 6971   UNALLOCATED   199.249.223.0/24      2516       Kokusai Denshin Denw
 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, 
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 
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
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        /8:18       /9:5       /10:6       /11:12      /12:32      
/13:84      /14:224     /15:379     /16:6933    /17:1220    /18:2298    
/19:6857    /20:5650    /21:4644    /22:6890    /23:8742    /24:60929   
/25:341     /26:371     /27:341     /28:325     /29:259     /30:227     
/31:0       /32:79      

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

  ASN   No of nets  Total ann.   Description
  701     1447          2294      UUNET Technologies, Inc. 
 1221     1441          1591      Telstra Pty Ltd
 2551      748           854      ICG NetAhead, Inc 
 3908      748           895      Supernet, Inc. 
 7046      597           772      UUNET Technologies, Inc. 
 7018      524          1017      AT&T 
  690      495           499      Merit Network 
 4293      460           477      Cable & Wireless USA 
  702      457           707      UUNET Technologies, Inc. 
 3967      424           604      Exodus Communication 
    1      411           877      BBN Planet 
 1239      396           715      Sprint 
 2764      386           433      connect.com.au pty ltd
15870      373           377      Global Center Frankfurt
  209      362           511      Qwest 
18994      354           356      Global Crossing 
  703      349           419      UUNET Technologies, Inc. 
11371      309           322      Rhythms NetConnections 
 4323      288           337      Time Warner Communications, I
 4151      285           327      USDA 

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

   4:3         9:1        12:403      13:10       15:1        17:6      
  20:1        24:698      26:1        32:32       38:8        43:3      
  44:2        53:2        55:1        57:15       61:69       62:137    
  63:1908     64:1346     65:611      66:424      80:36      128:44     
 129:115     130:19      131:44      132:12      133:1       134:138    
 135:9       136:22      137:93      138:199     139:46      140:139    
 141:160     142:64      143:40      144:144     145:11      146:143    
 147:129     148:214     149:89      150:37      151:212     152:404    
 153:31      154:23      155:77      156:84      157:122     158:72     
 159:65      160:45      161:58      162:67      163:158     164:107    
 165:92      166:185     167:142     168:119     169:36      170:282    
 171:2       192:5498    193:1932    194:2039    195:817     196:412    
 198:3717    199:3401    200:2432    201:1       202:2726    203:4595   
 204:3513    205:2367    206:3029    207:2762    208:3076    209:3217   
 210:528     211:124     212:799     213:465     214:9       215:14     
 216:3064    217:377     218:2      

End of report

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