[rtma] Weekly Routing Table Report

Routing Table Analysis cscora at thyme.apnic.net
Fri Apr 25 06:06:58 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 25 Apr, 2003

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

BGP routing table entries examined:                            125034
    Prefixes after maximum aggregation:                         78339
    Unique aggregates announced to Internet:                    59209
Total ASes present in the Internet Routing Table:               15085
Origin-only ASes present in the Internet Routing Table:         13083
Origin ASes announcing only one prefix:                          5929
Transit ASes present in the Internet Routing Table:              2002
Transit-only ASes present in the Internet Routing Table:           74
Average AS path length visible in the Internet Routing Table:     4.8
    Max AS path length visible:                                   255
Illegal AS announcements present in the Routing Table:              4
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from unallocated address space:           20
Number of addresses announced to Internet:                 1225460768
    Equivalent to 73 /8s, 11 /16s and 12 /24s
    Percentage of available address space announced:             33.1
    Percentage of allocated address space announced:             59.1
    Percentage of available address space allocated:             55.9
Total number of prefixes smaller than registry allocations:     54233

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

Prefixes being announced by APNIC Region ASes:                  21127
    Total APNIC prefixes after maximum aggregation:             12280
Prefixes being announced from the APNIC address blocks:         19587
    Unique aggregates announced from the APNIC address blocks:  11959
APNIC Region origin ASes present in the Internet Routing Table:  1785
APNIC Region origin ASes announcing only one prefix:              522
APNIC Region transit ASes present in the Internet Routing Table:  298
Average APNIC Region AS path length visible:                      5.0
    Max APNIC Region AS path length visible:                       17
Number of APNIC addresses announced to Internet:            110650848
    Equivalent to 6 /8s, 152 /16s and 101 /24s
    Percentage of available APNIC address space announced:       59.6

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:                   77124
    Total ARIN prefixes after maximum aggregation:              48056
Prefixes being announced from the ARIN address blocks:          55210
    Unique aggregates announced from the ARIN address blocks:   16616
ARIN Region origin ASes present in the Internet Routing Table:   8361
ARIN Region origin ASes announcing only one prefix:              2857
ARIN Region transit ASes present in the Internet Routing Table:   799
Average ARIN Region AS path length visible:                       4.6
    Max ARIN Region AS path length visible:                        17
Number of ARIN addresses announced to Internet:             191099136
    Equivalent to 11 /8s, 99 /16s and 241 /24s
    Percentage of available ARIN address space announced:        71.2

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:                   21450
    Total RIPE prefixes after maximum aggregation:              15776
Prefixes being announced from the RIPE address blocks:          18002
    Unique aggregates announced from the RIPE address blocks:   12057
RIPE Region origin ASes present in the Internet Routing Table:   4533
RIPE Region origin ASes announcing only one prefix:              2462
RIPE Region transit ASes present in the Internet Routing Table:   807
Average RIPE Region AS path length visible:                       5.4
    Max RIPE Region AS path length visible:                        16
Number of RIPE addresses announced to Internet:             129303424
    Equivalent to 7 /8s, 181 /16s and 3 /24s
    Percentage of available RIPE address space announced:        70.1

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:                  5329
    Total LACNIC prefixes after maximum aggregation:             2227
Prefixes being announced from the LACNIC address blocks:         4745
    Unique aggregates announced from the LACNIC address blocks:  2931
LACNIC Region origin ASes present in the Internet Routing Table:  334
LACNIC Region origin ASes announcing only one prefix:              88
LACNIC Region transit ASes present in the Internet Routing Table:  67
Average LACNIC Region AS path length visible:                     5.2
    Max LACNIC Region AS path length visible:                      25
Number of LACNIC addresses announced to Internet:            12482048
    Equivalent to 0 /8s, 190 /16s and 118 /24s
    Percentage of available LACNIC address space announced:      37.2

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     1101       1104         789   Telstra Pty Ltd
 4755      415        136          75   Videsh Sanchar Nigam Ltd. Aut
  703      398        383         312   UUNET
 2907      385       1976         362   SINET Japan
17557      376         28         138   Pakistan Telecom
 2764      322        341         290   connect.com.au pty ltd
 4814      287         85          22   China Telecom (Group)
 7474      270        276         206   Optus Communications Pty Ltd
17676      244       3766          22   XTAGE CORPORATION
 3786      242        773         209   DACOM Corporation
 4134      224       2014         114   Data Communications Bureau
 9583      220         33          14   Satyam Infoway Ltd.,
 4766      214       2078         160   Korea Internet Exchange for "
 9443      179         58          78   Primus Telecommunications
 9800      177        250          55   CHINA UNICOM
 9238      140          8          17   TATA ISP
 4739      130         57         119   Commerical Internet eXchange 
 9498      129          9          12   BHARTI BT INTERNET LTD.
 9768      127        384          64   Korea Telecom
 4716      126        729         120   TTnet

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1577       8923        1112   UUNET Technologies, Inc. 
 7018     1349       7164         937   AT&T 
 7132      959       6476         209   Southwestern Bell Internet Se
 1239      958       3095         676   Sprint 
 3908      919       1570         470   Supernet, Inc. 
 4151      908        691          60   USDA 
    1      732       2749         465   GENUITY 
 7843      729        408         182   Adelphia Corp. 
  189      704        341         289   Genuity 
 4323      576        514         169   Time Warner Communications, I
  852      547       1110         430   Telus Advanced Communications
18566      546        144           5   Covad Communications 
  705      529        278         234   UUNET Technologies, Inc. 
 2386      514        482         276   AT&T Data Communications Serv
 3561      513       2357         335   Cable & Wireless USA 
  690      494         72         312   Merit Network 
  209      492       2120         293   Qwest 
 7066      481        204         257   Virginia Polytechnic Institut
 6197      480        340         196   BellSouth Network Solutions, 
20115      475        189         295   Charter Communications 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      774       2186         644   UUNET - Commercial IP service
 3301      309       1173         299   TeliaNet Sweden
 3215      303        851         175   France Telecom Transpac
 3320      265       2004         225   Deutsche Telekom AG
  680      231       2051         228   DFN-IP service G-WiN
 1257      227        327         189   SWIPnet Swedish IP Network
 5400      204        112         114   BT Ignite European Backbone
 8220      200        365         189   COLT Internet - International
  719      197        307         125   LANLINK autonomous system
 5515      196        779         168   Sonera Solution Autonomous Sy
  786      180       1874         180   The JANET IP Service
20858      164         17           3   This AS will be used to conne
 8708      155         44         151   Romania Data Systems S.A.
 3303      141        517         140   Swisscom Ltd
12302      127         18          34   MobiFon S.A.
 2856      120       1298         110   BTnet UK Regional network
 3269      112        755          63   TELECOM ITALIA
 3246      109        383         106   Song Networks
 3352      108        750          31   Ibernet, Internet Access Netw
 2874       96         85          39   Global One Services AB

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      294         99         105   ImpSat
 7303      253         36          66   Telecom Argentina Stet-France
 8151      216        334         118   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 
 6147       91         62          20   Telefonica Del Peru 
11992       89          8          37   Integrated Systems 
11340       82          2          26   Red Universitaria Nacional 
 1916       75        306          45   Fundacao de Amparo a Pesquisa
 8065       75          6          15   Empresas Publicas de Medellin
13999       74         36           8   Mega Cable S.A. de C.V. 
 6535       73          5          22   Chilesat Servicios  Empresari
15311       72         28          36   Telefonica Empresas 
11830       66          4          26   Instituto Costarricense de El
 4270       65         18          10   Red de Interconexion Universi
 7080       64          4           1   Electronica y Comunicaciones 
 7927       64          5          39   Global One Venezuela 
 7984       61         11          41   Global One Colombia 

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

  ASN   No of nets  Net Savings Description
 4151       908         848      USDA 
 7132       959         750      Southwestern Bell Internet Se
 7843       729         547      Adelphia Corp. 
18566       546         541      Covad Communications 
 3908       919         449      Supernet, Inc. 
  189       704         415      Genuity 
 7018      1349         412      AT&T 
 4323       576         407      Time Warner Communications, I
 4755       415         340      Videsh Sanchar Nigam Ltd. Aut
 1221      1101         312      Telstra Pty Ltd
  705       529         295      UUNET Technologies, Inc. 
 6347       371         292      SAVVIS Communications Corpora
 6197       480         284      BellSouth Network Solutions, 
22927       297         284      TELEFONICA DE ARGENTINA 
 6198       458         283      BellSouth Network Solutions, 
 1239       958         282      Sprint 
 4355       388         279      EarthLink, Inc. 
    1       732         267      GENUITY 
 4814       287         265      China Telecom (Group)
27364       270         252      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
64515   PRIVATE       202.174.42.0/24      17909       AirNet Commercial Au
64514   PRIVATE       203.28.47.0/24       17909       AirNet Commercial Au
64512   PRIVATE       203.34.180.0/24      17909       AirNet Commercial Au

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

Network            Origin AS  Description
39.0.0.0/8            4554     Exchange Point Blocks 
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 
192.158.254.0/24       705     UUNET Technologies, Inc. 
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        /8:18       /9:7       /10:8       /11:13      /12:50      
/13:93      /14:251     /15:463     /16:7386    /17:1666    /18:2964    
/19:8371    /20:8343    /21:6028    /22:8943    /23:10537   /24:69430   
/25:137     /26:186     /27:53      /28:25      /29:13      /30:24      
/31:0       /32:25      

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

  ASN   No of nets  Total ann.   Description
  189      625           704      Genuity 
 3908      575           919      Supernet, Inc. 
18566      540           546      Covad Communications 
  702      481           774      UUNET - Commercial IP service
 7018      477          1349      AT&T 
 7843      471           729      Adelphia Corp. 
  690      443           494      Merit Network 
  701      429          1577      UUNET Technologies, Inc. 
 7066      380           481      Virginia Polytechnic Institut
 6198      361           458      BellSouth Network Solutions, 
 6197      358           480      BellSouth Network Solutions, 
 1239      356           958      Sprint 
20115      341           475      Charter Communications 
11305      311           334      Interland Incorporated 
 2386      308           514      AT&T Data Communications Serv
 4814      274           287      China Telecom (Group)
27364      263           270      Armstrong Cable Services 
    1      257           732      GENUITY 
22927      235           297      TELEFONICA DE ARGENTINA 
 3215      226           303      France Telecom Transpac

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

  12:687      13:1        15:4        17:3        20:8        24:825    
  25:1        32:85       38:61       40:18       44:2        55:1      
  57:16       61:429      62:535      63:1902     64:1558     65:1932   
  66:2390     67:168      68:358      69:114      80:341      81:129    
 128:157     129:178     130:45      131:82      132:11      133:2      
 134:155     135:4       136:113     137:109     138:109     139:66     
 140:147     141:105     142:95      143:44      144:102     145:15     
 146:270     147:94      148:278     149:72      150:43      151:68     
 152:246     153:57      154:2       155:108     156:46      157:40     
 158:124     159:144     160:37      161:74      162:142     163:78     
 164:306     165:140     166:84      167:331     168:407     169:57     
 170:317     171:7       192:5349    193:2412    194:1991    195:1004   
 196:464     198:3564    199:3587    200:2952    202:3775    203:5186   
 204:3071    205:2005    206:2424    207:2400    208:2648    209:2843   
 210:775     211:311     212:963     213:797     214:21      215:21     
 216:3363    217:622     218:90      219:21      220:92     

End of report



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