[rtma] Weekly Routing Table Report

Routing Table Analysis cscora at thyme.apnic.net
Fri Apr 11 06:05:53 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

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   20:00 +10GMT Fri 11 Apr, 2003

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

BGP routing table entries examined:                            124049
    Prefixes after maximum aggregation:                         78292
    Unique aggregates announced to Internet:                    59307
Total ASes present in the Internet Routing Table:               14970
Origin-only ASes present in the Internet Routing Table:         12977
Origin ASes announcing only one prefix:                          5887
Transit ASes present in the Internet Routing Table:              1993
Transit-only ASes present in the Internet Routing Table:           70
Average AS path length visible in the Internet Routing Table:     4.7
    Max AS path length visible:                                   255
Illegal AS announcements present in the Routing Table:              3
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from unallocated address space:           20
Number of addresses announced to Internet:                 1206880288
    Equivalent to 71 /8s, 239 /16s and 136 /24s
    Percentage of available address space announced:             32.6
    Percentage of allocated address space announced:             58.2
    Percentage of available address space allocated:             55.9
Total number of prefixes smaller than registry allocations:     58512

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

Prefixes being announced by APNIC Region ASes:                  20748
    Total APNIC prefixes after maximum aggregation:             12172
Prefixes being announced from the APNIC address blocks:         19182
    Unique aggregates announced from the APNIC address blocks:  11860
APNIC Region origin ASes present in the Internet Routing Table:  1766
APNIC Region origin ASes announcing only one prefix:              519
APNIC Region transit ASes present in the Internet Routing Table:  290
Average APNIC Region AS path length visible:                      4.9
    Max APNIC Region AS path length visible:                       16
Number of APNIC addresses announced to Internet:            109842432
    Equivalent to 6 /8s, 140 /16s and 16 /24s
    Percentage of available APNIC address space announced:       59.2

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:                   76640
    Total ARIN prefixes after maximum aggregation:              48173
Prefixes being announced from the ARIN address blocks:          54924
    Unique aggregates announced from the ARIN address blocks:   16806
ARIN Region origin ASes present in the Internet Routing Table:   8306
ARIN Region origin ASes announcing only one prefix:              2829
ARIN Region transit ASes present in the Internet Routing Table:   793
Average ARIN Region AS path length visible:                       4.5
    Max ARIN Region AS path length visible:                        17
Number of ARIN addresses announced to Internet:             190251264
    Equivalent to 11 /8s, 87 /16s and 1 /24s
    Percentage of available ARIN address space announced:        70.9

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 - 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:                   21362
    Total RIPE prefixes after maximum aggregation:              15737
Prefixes being announced from the RIPE address blocks:          17881
    Unique aggregates announced from the RIPE address blocks:   11986
RIPE Region origin ASes present in the Internet Routing Table:   4498
RIPE Region origin ASes announcing only one prefix:              2454
RIPE Region transit ASes present in the Internet Routing Table:   811
Average RIPE Region AS path length visible:                       5.3
    Max RIPE Region AS path length visible:                        16
Number of RIPE addresses announced to Internet:             128928000
    Equivalent to 7 /8s, 175 /16s and 73 /24s
    Percentage of available RIPE address space announced:        76.8

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:                  5297
    Total LACNIC prefixes after maximum aggregation:             2210
Prefixes being announced from the LACNIC address blocks:         4681
    Unique aggregates announced from the LACNIC address blocks:  2960
LACNIC Region origin ASes present in the Internet Routing Table:  330
LACNIC Region origin ASes announcing only one prefix:              85
LACNIC Region transit ASes present in the Internet Routing Table:  68
Average LACNIC Region AS path length visible:                     5.1
    Max LACNIC Region AS path length visible:                      15
Number of LACNIC addresses announced to Internet:            12420096
    Equivalent to 0 /8s, 189 /16s and 132 /24s
    Percentage of available LACNIC address space announced:      37.0

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     1100       1105         790   Telstra Pty Ltd
  703      394        365         313   UUNET
 2907      379       1974         358   SINET Japan
17557      378         28         142   Pakistan Telecom
 2764      323        341         291   connect.com.au pty ltd
 7474      271        276         207   Optus Communications Pty Ltd
 4814      270         79          15   China Telecom (Group)
 3786      245        775         212   DACOM Corporation
17676      239       3686          26   XTAGE CORPORATION
 4755      236        135          75   Videsh Sanchar Nigam Ltd. Aut
 4134      235       1999         122   Data Communications Bureau
 9583      220         33          14   Satyam Infoway Ltd.,
 4766      210       2078         159   Korea Internet Exchange for "
 9443      180         58          79   Primus Telecommunications
 9800      175        244          53   CHINA UNICOM
 9238      140          8          17   TATA ISP
 7476      137        182          29   The University of Queensland
 4739      129         57         118   Commerical Internet eXchange 
 4716      128        731         122   TTnet
 9498      126          9          10   BHARTI BT INTERNET LTD.

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1596       8895        1124   UUNET Technologies, Inc. 
 7018     1360       7172         941   AT&T 
 1239      967       3120         681   Sprint 
 3908      933       1571         475   Supernet, Inc. 
 7132      802       6148         414   Southwestern Bell Internet Se
    1      772       2846         493   GENUITY 
  189      706        341         291   Genuity 
 4151      691        691          58   USDA 
 7843      645        401         163   Adelphia Corp. 
 3561      585       2351         337   Cable & Wireless USA 
 4323      568        498         165   Time Warner Communications, I
  852      549       1110         430   Telus Advanced Communications
18566      540        128           6   Covad Communications 
  209      535       2140         302   Qwest 
 2386      508        482         269   AT&T Data Communications Serv
  690      495         73         316   Merit Network 
  705      487        229         215   UUNET Technologies, Inc. 
 7066      485        204         255   Virginia Polytechnic Institut
 6197      476        338         196   BellSouth Network Solutions, 
 6198      455        226         174   BellSouth Network Solutions, 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      779       2203         646   UUNET - Commercial IP service
 3215      320        851         175   France Telecom Transpac
 3301      309       1157         299   TeliaNet Sweden
 3320      269       1997         231   Deutsche Telekom AG
  680      232       2053         229   DFN-IP service G-WiN
 1257      216        327         190   SWIPnet Swedish IP Network
 5400      196         97         110   BT Ignite European Backbone
 5515      196        779         168   Sonera Solution Autonomous Sy
  719      195        307         125   LANLINK autonomous system
  786      180       1874         180   The JANET IP Service
 8220      169        298         159   COLT Internet - International
20858      161         17           3   This AS will be used to conne
 8708      155         44         151   Romania Data Systems S.A.
 3303      144        517         143   Swisscom Ltd
12302      126         18          33   MobiFon S.A.
 2856      119       1298         109   BTnet UK Regional network
 3269      112        755          63   TELECOM ITALIA
 3246      110        384         107   Song Networks
 3233      107         11          12   RNC - Romanian Natioanal R&D 
 3352      106        734          32   Ibernet, Internet Access Netw

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      294         99         105   ImpSat
 7303      242         36          61   Telecom Argentina Stet-France
 8151      217        334         119   UniNet S.A. de C.V. 
11172      163         66          33   Servicios Alestra S.A de C.V 
 6503      154        207         108   AVANTEL, S.A. 
16814      139          9          18   NSS, S.A. 
10620      113          7          33   TVCABLE BOGOTA 
11340      106          3          34   Red Universitaria Nacional 
 6147       90         62          20   Telefonica Del Peru 
11992       90          9          36   Integrated Systems 
 1916       75        306          45   Fundacao de Amparo a Pesquisa
 8065       75          6          15   Empresas Publicas de Medellin
 6535       74          5          19   Chilesat Servicios  Empresari
13999       74         36           8   Mega Cable S.A. de C.V. 
15311       72         28          36   Telefonica Empresas 
 4270       68         18          10   Red de Interconexion Universi
11830       65          4          26   Instituto Costarricense de El
 7080       64          4           1   Electronica y Comunicaciones 
 7927       64          5          39   Global One Venezuela 
 7984       61         11          40   Global One Colombia 

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

  ASN   No of nets  Net Savings Description
 4151       691         633      USDA 
18566       540         534      Covad Communications 
 7843       645         482      Adelphia Corp. 
 3908       933         458      Supernet, Inc. 
 7018      1360         419      AT&T 
  189       706         415      Genuity 
 4323       568         403      Time Warner Communications, I
 7132       802         388      Southwestern Bell Internet Se
 1221      1100         310      Telstra Pty Ltd
 1239       967         286      Sprint 
 6347       368         286      SAVVIS Communications Corpora
 6198       455         281      BellSouth Network Solutions, 
 6197       476         280      BellSouth Network Solutions, 
    1       772         279      GENUITY 
  705       487         272      UUNET Technologies, Inc. 
 4355       373         272      EarthLink, Inc. 
22927       286         272      TELEFONICA DE ARGENTINA 
 4814       270         255      China Telecom (Group)
 3561       585         248      Cable & Wireless USA 
27364       266         248      Armstrong Cable Services 

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

Bad AS  Designation  Network              Transit AS  Description
 1877   UNALLOCATED   192.108.199.0/24      1880       Stupi, house man's p
 1877   UNALLOCATED   192.108.201.0/24      1880       Stupi, house man's p
65501   PRIVATE       200.73.26.0/24       18747       IFX Communication Ve

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

Network            Origin AS  Description
132.0.0.0/10           568     DISO-UNRRA 
135.0.0.0/13         10455     Lucent Technologies 
137.0.0.0/13           568     DISO-UNRRA 
158.0.0.0/13           568     DISO-UNRRA 
192.16.52.0/24        1239     Sprint 
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
192.136.135.0/24      1239     Sprint 
192.153.136.0/21       568     DISO-UNRRA 
192.158.249.0/24     27319     INTERNET SOFTWARE CONSORTIUM,
192.158.251.0/24     27321     INTERNET SOFTWARE CONSORTIUM,
192.172.0.0/19         568     DISO-UNRRA 
192.243.36.0/23       2044     AUSNet, Inc. 

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       /10:8       /11:13      /12:47      
/13:92      /14:251     /15:464     /16:7379    /17:1636    /18:2952    
/19:8309    /20:8210    /21:5922    /22:8847    /23:10647   /24:68727   
/25:158     /26:193     /27:52      /28:26      /29:13      /30:44      
/31:0       /32:37      

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

  ASN   No of nets  Total ann.   Description
  189      627           706      Genuity 
 3908      592           933      Supernet, Inc. 
18566      534           540      Covad Communications 
  702      485           779      UUNET - Commercial IP service
  701      476          1596      UUNET Technologies, Inc. 
 7018      476          1360      AT&T 
  690      444           495      Merit Network 
 7843      392           645      Adelphia Corp. 
 7066      384           485      Virginia Polytechnic Institut
 1239      367           967      Sprint 
 6198      359           455      BellSouth Network Solutions, 
 6197      355           476      BellSouth Network Solutions, 
11305      318           341      Interland Incorporated 
 2386      304           508      AT&T Data Communications Serv
20115      299           426      Charter Communications 
22927      285           286      TELEFONICA DE ARGENTINA 
 6140      281           294      ImpSat
    1      272           772      GENUITY 
27364      259           266      Armstrong Cable Services 
 3215      243           320      France Telecom Transpac

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

   4:1        12:677      13:1        15:4        17:3        20:9      
  24:801      25:1        32:86       38:63       40:18       44:2      
  55:1        57:17       61:407      62:519      63:1883     64:1557   
  65:1916     66:2357     67:161      68:338      69:102      80:329    
  81:128     128:150     129:180     130:45      131:135     132:11     
 133:2       134:151     135:4       136:113     137:110     138:105    
 139:66      140:118     141:91      142:95      143:46      144:113    
 145:16      146:269     147:93      148:277     149:71      150:46     
 151:68      152:246     153:57      154:2       155:107     156:46     
 157:44      158:124     159:141     160:36      161:75      162:129    
 163:78      164:309     165:134     166:75      167:328     168:396    
 169:56      170:316     171:7       192:5349    193:2414    194:1985   
 195:994     196:464     198:3558    199:3386    200:2912    202:3673   
 203:5077    204:3066    205:2012    206:2426    207:2424    208:2665   
 209:2883    210:750     211:339     212:983     213:776     214:20     
 215:21      216:3301    217:635     218:85      219:13      220:54     


End of report



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