[rtma] Weekly Routing Table Report

Routing Table Analysis cscora at thyme.apnic.net
Fri Sep 26 14:07:43 EDT 2003


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

If you have any comments please contact Philip Smith <pfs at cisco.com>.

Routing Table Report   04:00 +10GMT Sat 27 Sep, 2003

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

BGP routing table entries examined:                            127855
    Prefixes after maximum aggregation:                         79965
    Unique aggregates announced to Internet:                    61682
Total ASes present in the Internet Routing Table:               15876
Origin-only ASes present in the Internet Routing Table:         13780
Origin ASes announcing only one prefix:                          6245
Transit ASes present in the Internet Routing Table:              2096
Transit-only ASes present in the Internet Routing Table:           69
Average AS path length visible in the Internet Routing Table:     4.9
    Max AS path length visible:                                    26
Illegal AS announcements present in the Routing Table:              6
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from unallocated address space:           14
Number of addresses announced to Internet:                 1227349284
    Equivalent to 73 /8s, 39 /16s and 221 /24s
    Percentage of available address space announced:             33.1
    Percentage of allocated address space announced:             59.2
    Percentage of available address space allocated:             56.0
Total number of prefixes smaller than registry allocations:     56396

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

Prefixes being announced by APNIC Region ASes:                  22707
    Total APNIC prefixes after maximum aggregation:             12775
Prefixes being announced from the APNIC address blocks:         21124
    Unique aggregates announced from the APNIC address blocks:  12364
APNIC Region origin ASes present in the Internet Routing Table:  1897
APNIC Region origin ASes announcing only one prefix:              544
APNIC Region transit ASes present in the Internet Routing Table:  306
Average APNIC Region AS path length visible:                      4.9
    Max APNIC Region AS path length visible:                       15
Number of APNIC addresses announced to Internet:            122592768
    Equivalent to 7 /8s, 78 /16s and 158 /24s
    Percentage of available APNIC address space announced:       66.1

APNIC AS Blocks        4608 - 4864, 7467 - 7722, 9216 - 10239
                       17408 - 18431, 23552 - 24575
APNIC Address Blocks   60/7, 202/7, 210/7, 218/7, 220/7 and 222/8

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                   77126
    Total ARIN prefixes after maximum aggregation:              48337
Prefixes being announced from the ARIN address blocks:          54900
    Unique aggregates announced from the ARIN address blocks:   17269
ARIN Region origin ASes present in the Internet Routing Table:   8703
ARIN Region origin ASes announcing only one prefix:              2995
ARIN Region transit ASes present in the Internet Routing Table:   836
Average ARIN Region AS path length visible:                       4.7
    Max ARIN Region AS path length visible:                        16
Number of ARIN addresses announced to Internet:             197256224
    Equivalent to 11 /8s, 193 /16s and 228 /24s
    Percentage of available ARIN address space announced:        73.5

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 - 23551
                       25600 - 26591, 26624 - 27647, 29695 - 30719
ARIN Address Blocks    24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
                       and 216/8

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

Prefixes being announced by RIPE Region ASes:                   22594
    Total RIPE prefixes after maximum aggregation:              16569
Prefixes being announced from the RIPE address blocks:          19105
    Unique aggregates announced from the RIPE address blocks:   12919
RIPE Region origin ASes present in the Internet Routing Table:   4859
RIPE Region origin ASes announcing only one prefix:              2605
RIPE Region transit ASes present in the Internet Routing Table:   850
Average RIPE Region AS path length visible:                       5.4
    Max RIPE Region AS path length visible:                        26
Number of RIPE addresses announced to Internet:             136574784
    Equivalent to 8 /8s, 35 /16s and 247 /24s
    Percentage of available RIPE address space announced:        74.0

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, 24576 - 25599, 28672 - 29695
RIPE Address Blocks    62/8, 80/7, 82/8, 188/8, 193/8, 194/7,
                       212/7 and 217/8

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                  5423
    Total LACNIC prefixes after maximum aggregation:             2284
Prefixes being announced from the LACNIC address blocks:         4890
    Unique aggregates announced from the LACNIC address blocks:  3181
LACNIC Region origin ASes present in the Internet Routing Table:  348
LACNIC Region origin ASes announcing only one prefix:             101
LACNIC Region transit ASes present in the Internet Routing Table:  73
Average LACNIC Region AS path length visible:                     5.3
    Max LACNIC Region AS path length visible:                      16
Number of LACNIC addresses announced to Internet:            13298944
    Equivalent to 0 /8s, 202 /16s and 237 /24s
    Percentage of available LACNIC address space announced:      39.6

LACNIC AS Blocks       26592 - 26623, 27648 - 28671
LACNIC Address Blocks  200/7

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 1221      974       1110         690   Telstra Pty Ltd
 4755      408        135          76   Videsh Sanchar Nigam Ltd. Aut
 4134      388       2230         109   Data Communications Bureau
 2907      374       1879         348   SINET Japan
  703      333        372         265   UUNET
 2764      297        322         260   connect.com.au pty ltd
17557      289         21         138   Pakistan Telecom
 7474      269        306         209   Optus Communications Pty Ltd
17676      265       3980          26   XTAGE CORPORATION
 9583      261         38          27   Satyam Infoway Ltd.,
 4766      238       2461         173   Korea Internet Exchange for "
 3786      235        773         203   DACOM Corporation
 9800      203        332          52   CHINA UNICOM
 9942      188         69         110   COMindico Australia
 9929      187        160          36   China Netcom Corp.
 9443      183         58          83   Primus Telecommunications
 9498      183         20          16   BHARTI BT INTERNET LTD.
 4538      177       1634          23   China Education and Research 
17642      157         40         118   RequestDSL BGP AS# for Sydney
 4837      140       1058          88   chinanet IDC center beijing n

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1462       8719        1018   UUNET Technologies, Inc. 
 7018     1401       7156         977   AT&T 
 6197      966        443         245   BellSouth Network Solutions, 
 3908      916       1573         492   Supernet, Inc. 
 1239      905       3031         651   Sprint 
18566      692        176           8   Covad Communications 
 4323      670        575         194   Time Warner Communications, I
 3356      564      10744         473   Level 3 Communications, LLC 
 7843      529        466         134   Adelphia Corp. 
  852      517       1123         410   Telus Advanced Communications
  209      501       2127         289   Qwest 
 6198      498        330         193   BellSouth Network Solutions, 
 7066      489        205         263   Virginia Polytechnic Institut
20115      475        205         296   Charter Communications 
  690      411         59         276   Merit Network 
  705      409        185         250   UUNET Technologies, Inc. 
 4355      396        334         109   EarthLink, Inc. 
 2386      375        507         194   AT&T Data Communications Serv
  376      361        359         115   Reseau Interordinateurs Scien
 6347      356        397          81   SAVVIS Communications Corpora

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      710       2121         589   UUNET - Commercial IP service
 3301      296       1169         283   TeliaNet Sweden
 3320      272       1989         232   Deutsche Telekom AG
 8220      256        434         245   COLT Internet - International
  680      232       2054         229   DFN-IP service G-WiN
 1257      228        358         183   SWIPnet Swedish IP Network
  719      193        307         123   LANLINK autonomous system
 3215      188        737         106   France Telecom Transpac
 5515      186        779         148   Sonera Solution Autonomous Sy
 5400      183        173         133   BT Ignite European Backbone
  786      179       1874         179   The JANET IP Service
 8708      156        110         153   Romania Data Systems S.A.
 3303      148        540         141   Swisscom Ltd
12302      127         18          34   MobiFon S.A.
 3246      126        376         124   Song Networks
 3269      119        853          65   TELECOM ITALIA
 2856      113       1293         104   BTnet UK Regional network
25186      103        128          71   France Telecom Transpac's Tra
 3352       98        824          34   Ibernet, Internet Access Netw
 2647       95       4225          48   SITA

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      340        104         101   ImpSat
 8151      234        367         122   UniNet S.A. de C.V. 
 7303      212         39          62   Telecom Argentina Stet-France
11172      187         79          44   Servicios Alestra S.A de C.V 
16814      151         10          17   NSS, S.A. 
10620      130          8          26   TVCABLE BOGOTA 
 6503      129        189          93   AVANTEL, S.A. 
11340      103          3          36   Red Universitaria Nacional 
11992       91         25          37   Integrated Systems 
 6147       84         70          19   Telefonica Del Peru 
 8065       82          8          17   Empresas Publicas de Medellin
 6535       75          5          18   Chilesat Servicios  Empresari
15311       75         14          38   Telefonica Empresas 
11830       73         21          28   Instituto Costarricense de El
 4270       67         17           8   Red de Interconexion Universi
 7927       67          6          40   Global One Venezuela 
 7080       64          4           1   Electronica y Comunicaciones 
 1916       61        270          41   Fundacao de Amparo a Pesquisa
 7984       59         12          40   Global One Colombia 
 4926       57          4          48   Telintar S.A. 

Global Per AS Maximum Aggr summary
----------------------------------

  ASN   No of nets  Net Savings Description
 6197       966         721      BellSouth Network Solutions, 
18566       692         684      Covad Communications 
 4323       670         476      Time Warner Communications, I
 7018      1401         424      AT&T 
 3908       916         424      Supernet, Inc. 
 7843       529         395      Adelphia Corp. 
 4755       408         332      Videsh Sanchar Nigam Ltd. Aut
 6198       498         305      BellSouth Network Solutions, 
27364       314         291      Armstrong Cable Services 
 4355       396         287      EarthLink, Inc. 
 5668       302         287      Century Telephone 
 1221       974         284      Telstra Pty Ltd
 4134       388         279      Data Communications Bureau
22909       297         279      Comcast Cable Corporation 
 6347       356         275      SAVVIS Communications Corpora
 1239       905         254      Sprint 
22773       285         250      Cox Communications, Inc. Atla
  376       361         246      Reseau Interordinateurs Scien
25844       243         241      Skadden, Arps, Slate, Meagher
 6140       340         239      ImpSat

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

Bad AS  Designation  Network              Transit AS  Description
18413   UNALLOCATED   61.67.0.0/20          4747       Taiwan Telecommunica
65093   PRIVATE       148.170.28.0/22       7991       Savvis Communication
65093   PRIVATE       148.170.32.0/22       7991       Savvis Communication
65093   PRIVATE       148.170.92.0/22       7991       Savvis Communication
 1877   UNALLOCATED   192.108.199.0/24      1876       Southern Methodist U
65100   PRIVATE       210.104.28.0/25       9768       Korea Telecom

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
132.0.0.0/10           568     DISO-UNRRA 
137.0.0.0/13           568     DISO-UNRRA 
158.0.0.0/13           568     DISO-UNRRA 
192.43.230.0/24       4738     South Australian Academic Res
192.44.0.0/19          702     UUNET - Commercial IP service
192.83.16.0/20        5515     Sonera Solution Autonomous Sy
192.83.32.0/19        5515     Sonera Solution Autonomous Sy
192.83.96.0/22        5515     Sonera Solution Autonomous Sy
192.83.100.0/24       5515     Sonera Solution Autonomous Sy
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T 
192.136.79.0/24        719     LANLINK autonomous system
192.153.136.0/21       568     DISO-UNRRA 
192.172.0.0/19         568     DISO-UNRRA 

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

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:18       /9:4       /10:6       /11:12      /12:55      
/13:97      /14:265     /15:470     /16:7448    /17:1761    /18:3140    
/19:8539    /20:8842    /21:6480    /22:9294    /23:10653   /24:70142   
/25:150     /26:203     /27:167     /28:25      /29:9       /30:53      
/31:0       /32:22      

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

  ASN   No of nets  Total ann.   Description
 6197      827           966      BellSouth Network Solutions, 
18566      686           692      Covad Communications 
 3908      577           916      Supernet, Inc. 
 7018      504          1401      AT&T 
  701      437          1462      UUNET Technologies, Inc. 
  702      426           710      UUNET - Commercial IP service
 6198      384           498      BellSouth Network Solutions, 
 7066      384           489      Virginia Polytechnic Institut
  690      371           411      Merit Network 
20115      318           475      Charter Communications 
 1239      315           905      Sprint 
27364      308           314      Armstrong Cable Services 
 3356      277           564      Level 3 Communications, LLC 
 5668      269           302      Century Telephone 
25844      243           243      Skadden, Arps, Slate, Meagher
 4355      214           396      EarthLink, Inc. 
 7843      213           529      Adelphia Corp. 
 3320      211           272      Deutsche Telekom AG
  209      199           501      Qwest 
14824      199           226      NewSouth Communications Corp.

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

   4:2        12:707      13:1        15:4        16:1        17:3      
  20:6        24:826      25:1        32:84       38:47       40:23     
  43:1        44:2        55:1        57:14       61:325      62:416    
  63:1878     64:1789     65:2054     66:2201     67:332      68:421    
  69:265      80:422      81:133      82:17      128:143     129:167    
 130:61      131:84      132:18      133:1       134:169     135:9      
 136:186     137:116     138:129     139:49      140:163     141:138    
 142:101     143:44      144:88      145:14      146:276     147:61     
 148:299     149:78      150:121     151:66      152:212     153:58     
 154:7       155:128     156:58      157:54      158:134     159:140    
 160:45      161:69      162:362     163:75      164:314     165:147    
 166:102     167:305     168:176     169:97      170:325     171:9      
 192:5335    193:2451    194:1976    195:1158    196:470     198:3599   
 199:2842    200:3007    202:3982    203:5305    204:2993    205:2039   
 206:2329    207:2499    208:2565    209:2720    210:923     211:374    
 212:966     213:932     214:16      215:22      216:3267    217:728    
 218:107     219:35      220:116     221:11      222:1      

End of report



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