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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   17 Aug, 2001

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

BGP routing table entries examined:                            106552
Origin ASes present in the Internet Routing Table:              11449
Origin ASes announcing only one prefix:                          4195
Transit ASes present in the Internet Routing Table:              1475
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:             39
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    16
Number of addresses announced to Internet:                 1224071201
    Equivalent to 72 /8s, 245 /16s and 216 /24s
    Percentage of available address space announced:             33.0
    Percentage of allocated address space announced:             63.6
    Percentage of available address space allocated:             51.9
Total number of prefixes smaller than registry allocations:     72715

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

Prefixes being announced by APNIC Region ASes:                  15947
Prefixes being announced from the APNIC address blocks:         14293
APNIC Region origin ASes present in the Internet Routing Table:  1348
APNIC Region origin ASes announcing only one prefix:              458
APNIC Region transit ASes present in the Internet Routing Table:  217
Average APNIC Region AS path length visible:                      5.1
    Max APNIC Region AS path length visible:                       15
Number of APNIC addresses announced to Internet:             76337609
    Equivalent to 4 /8s, 140 /16s and 209 /24s
    Percentage of available APNIC address space announced:       75.1

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:                   73087
Prefixes being announced from the ARIN address blocks:          52878
ARIN Region origin ASes present in the Internet Routing Table:   6877
ARIN Region origin ASes announcing only one prefix:              2036
ARIN Region transit ASes present in the Internet Routing Table:   679
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        16
Number of ARIN addresses announced to Internet:             203405397
    Equivalent to 12 /8s, 31 /16s and 184 /24s
    Percentage of available ARIN address space announced:        75.8

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:                   17514
Prefixes being announced from the RIPE address blocks:          13651
RIPE Region origin ASes present in the Internet Routing Table:   3228
RIPE Region origin ASes announcing only one prefix:              1701
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:             105576897
    Equivalent to 6 /8s, 74 /16s and 249 /24s
    Percentage of available RIPE address space announced:        69.9

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     1594       1316       Telstra Pty Ltd
 2764      436        378       connect.com.au pty ltd
  703      420        368       UUNET Technologies, Inc. 
 2907      376       1818       SINET Japan
 4755      291        162       Videsh Sanchar Nigam Ltd. Aut
 4134      236       1743       Data Communications Bureau
 7474      233        289       Optus Communications Pty Ltd
 4740      208         26       OzEmail ISP
 7539      208        175       TANet2, sponsored by NSC, TAI
 4766      179       1336       Korea Internet Exchange for "
 7545      155         25       TPG Internet Pty Ltd
 9443      143         39       Primus Telecommunications
 4786      131         17       NetConnect Communications Pty
 4763      120         69       Telstra New Zealand
 9583      116         61       Satyam Infoway Ltd.,
17561      116        167       Internet service provision to
 4713      114        885       NTT Communications Corporatio
 4812      109        278       China Telecom (Group)
 7586      109         17       Paradox Digital Pty Ltd
 4732      105        372       DDI CORPORATION

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

  ASN   No of nets  /20 equiv  Description
  702      704       1735       UUNET Technologies, Inc. 
 3301      432        918       TeliaNet Sweden
15870      388         12       Global Center Frankfurt
 1257      277        520       SWIPnet Swedish IP Network
  680      229       2069       DFN-IP service G-WiN
 1270      226        861       UUNET Germany
 3215      222        496       France Telecom / &Equant
15878      201          8       Global Center Paris
  786      184       1890       The JANET IP Service
 3320      182       1939       Deutsche Telekom AG
  719      181        291       LANLINK autonomous system
 5515      175        654       Sonera Finland Autonomous Sys
 8708      153         19       Romania Data Systems S.A.
 5400      137         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      118        269       KPNQwest Germany GmbH
 8503      112          3       PCNET - PCNET DATA Network
 5511      109        170       France Telecom

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

  ASN   No of nets  /20 equiv  Description
  701     2313       8140       UUNET Technologies, Inc. 
 7018     1002       7119       AT&T 
 3908      891        628       Supernet, Inc. 
    1      885       8714       BBN Planet 
 2551      782        655       ICG NetAhead, Inc 
 7046      775       1041       UUNET Technologies, Inc. 
 1239      692       3234       Sprint 
 2914      506       2311       Verio, Inc. 
  690      505         78       Merit Network 
  209      492       2135       Qwest 
 4293      480         98       Cable & Wireless USA 
 3561      427       2414       Cable & Wireless USA 
 2548      390       1000       Business Internet, Inc. 
 2149      389        312       Performance Systems, Inc. 
 3549      363        818       Global Crossing 
18994      360         10       Global Crossing 
  577      348        617       Bell Advanced Communications 
 3967      346        457       Exodus Communication 
 4323      346        318       Time Warner Communications, I
 6347      335        360       SAVVIS Communications Corpora

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

  ASN   No of nets  /20 equiv  Description
  701     2313       8140       UUNET Technologies, Inc. 
 1221     1594       1316       Telstra Pty Ltd
 7018     1002       7119       AT&T 
 3908      891        628       Supernet, Inc. 
    1      885       8714       BBN Planet 
 2551      782        655       ICG NetAhead, Inc 
 7046      775       1041       UUNET Technologies, Inc. 
  702      704       1735       UUNET Technologies, Inc. 
 1239      692       3234       Sprint 
 2914      506       2311       Verio, Inc. 
  690      505         78       Merit Network 
  209      492       2135       Qwest 
 4293      480         98       Cable & Wireless USA 
 2764      436        378       connect.com.au pty ltd
 3301      432        918       TeliaNet Sweden
 3561      427       2414       Cable & Wireless USA 
  703      420        368       UUNET Technologies, Inc. 
 2548      390       1000       Business Internet, Inc. 
 2149      389        312       Performance Systems, Inc. 
15870      388         12       Global Center Frankfurt

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         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
 2027   UNALLOCATED   150.185.128.0/18      8143       Publicom Corp. 
64842   PRIVATE       161.217.144.0/24      7046       UUNET Technologies, 
64842   PRIVATE       161.217.145.0/24      7046       UUNET Technologies, 
 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 
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 
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       /11:11      /12:32      
/13:83      /14:224     /15:374     /16:6936    /17:1210    /18:2293    
/19:6828    /20:5586    /21:4619    /22:6843    /23:8638    /24:60633   
/25:336     /26:385     /27:381     /28:385     /29:317     /30:314     
/31:2       /32:93      

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

  ASN   No of nets  Total ann.   Description
  701     1451          2313      UUNET Technologies, Inc. 
 1221     1445          1594      Telstra Pty Ltd
 3908      744           891      Supernet, Inc. 
 2551      679           782      ICG NetAhead, Inc 
 7046      602           775      UUNET Technologies, Inc. 
 7018      509          1002      AT&T 
  690      502           505      Merit Network 
 4293      463           480      Cable & Wireless USA 
  702      455           704      UUNET Technologies, Inc. 
    1      417           885      BBN Planet 
 2764      389           436      connect.com.au pty ltd
15870      384           388      Global Center Frankfurt
 1239      377           692      Sprint 
18994      358           360      Global Crossing 
  703      350           420      UUNET Technologies, Inc. 
  209      342           492      Qwest 
11371      309           322      Rhythms NetConnections 
 4323      297           346      Time Warner Communications, I
18993      287           291      Global Crossing 
 4151      284           325      USDA 

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

   4:1         9:1        12:395      13:10       15:1        17:6      
  20:1        24:672      26:1        32:32       38:7        43:5      
  44:2        53:2        55:1        57:12       61:65       62:138    
  63:1897     64:1321     65:576      66:417      80:32      128:43     
 129:108     130:19      131:44      132:12      133:1       134:171    
 135:9       136:22      137:127     138:204     139:46      140:141    
 141:161     142:63      143:41      144:143     145:11      146:146    
 147:136     148:212     149:95      150:46      151:212     152:424    
 153:31      154:25      155:77      156:82      157:115     158:73     
 159:65      160:42      161:60      162:72      163:160     164:122    
 165:91      166:185     167:140     168:120     169:34      170:276    
 171:2       192:5440    193:1920    194:2048    195:812     196:396    
 198:3758    199:3395    200:2382    201:1       202:2739    203:4580   
 204:3514    205:2376    206:2958    207:2737    208:3085    209:3119   
 210:525     211:126     212:792     213:460     214:9       215:13     
 216:3050    217:392     218:2      

End of report

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