[rtma] Weekly Routing Table Report

Routing Table Analysis cscora at thyme.apnic.net
Fri Aug 29 14:06:40 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 30 Aug, 2003

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

BGP routing table entries examined:                            127943
    Prefixes after maximum aggregation:                         80027
    Unique aggregates announced to Internet:                    61263
Total ASes present in the Internet Routing Table:               15751
Origin-only ASes present in the Internet Routing Table:         13658
Origin ASes announcing only one prefix:                          6212
Transit ASes present in the Internet Routing Table:              2093
Transit-only ASes present in the Internet Routing Table:           71
Average AS path length visible in the Internet Routing Table:     4.8
    Max AS path length visible:                                    26
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:           15
Number of addresses announced to Internet:                 1239924000
    Equivalent to 73 /8s, 231 /16s and 189 /24s
    Percentage of available address space announced:             33.5
    Percentage of allocated address space announced:             59.8
    Percentage of available address space allocated:             56.0
Total number of prefixes smaller than registry allocations:     56939

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

Prefixes being announced by APNIC Region ASes:                  22305
    Total APNIC prefixes after maximum aggregation:             12682
Prefixes being announced from the APNIC address blocks:         20737
    Unique aggregates announced from the APNIC address blocks:  12263
APNIC Region origin ASes present in the Internet Routing Table:  1890
APNIC Region origin ASes announcing only one prefix:              545
APNIC Region transit ASes present in the Internet Routing Table:  312
Average APNIC Region AS path length visible:                      4.9
    Max APNIC Region AS path length visible:                       16
Number of APNIC addresses announced to Internet:            121106176
    Equivalent to 7 /8s, 55 /16s and 239 /24s
    Percentage of available APNIC address space announced:       65.3

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:                   77902
    Total ARIN prefixes after maximum aggregation:              48613
Prefixes being announced from the ARIN address blocks:          55597
    Unique aggregates announced from the ARIN address blocks:   17253
ARIN Region origin ASes present in the Internet Routing Table:   8623
ARIN Region origin ASes announcing only one prefix:              2953
ARIN Region transit ASes present in the Internet Routing Table:   830
Average ARIN Region AS path length visible:                       4.6
    Max ARIN Region AS path length visible:                        21
Number of ARIN addresses announced to Internet:             196363040
    Equivalent to 11 /8s, 180 /16s and 67 /24s
    Percentage of available ARIN address space announced:        73.2

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:                   22369
    Total RIPE prefixes after maximum aggregation:              16413
Prefixes being announced from the RIPE address blocks:          18986
    Unique aggregates announced from the RIPE address blocks:   12754
RIPE Region origin ASes present in the Internet Routing Table:   4819
RIPE Region origin ASes announcing only one prefix:              2615
RIPE Region transit ASes present in the Internet Routing Table:   851
Average RIPE Region AS path length visible:                       5.4
    Max RIPE Region AS path length visible:                        26
Number of RIPE addresses announced to Internet:             135214400
    Equivalent to 8 /8s, 15 /16s and 53 /24s
    Percentage of available RIPE address space announced:        73.3

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, 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:                  5365
    Total LACNIC prefixes after maximum aggregation:             2319
Prefixes being announced from the LACNIC address blocks:         4807
    Unique aggregates announced from the LACNIC address blocks:  3132
LACNIC Region origin ASes present in the Internet Routing Table:  348
LACNIC Region origin ASes announcing only one prefix:              99
LACNIC Region transit ASes present in the Internet Routing Table:  70
Average LACNIC Region AS path length visible:                     5.2
    Max LACNIC Region AS path length visible:                      20
Number of LACNIC addresses announced to Internet:            13049600
    Equivalent to 0 /8s, 199 /16s and 31 /24s
    Percentage of available LACNIC address space announced:      38.9

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      981       1125         694   Telstra Pty Ltd
 4755      398        134          73   Videsh Sanchar Nigam Ltd. Aut
 2907      375       1911         349   SINET Japan
  703      340        356         269   UUNET
 4134      333       2220         112   Data Communications Bureau
17557      304         26         136   Pakistan Telecom
 2764      299        323         267   connect.com.au pty ltd
 7474      265        307         206   Optus Communications Pty Ltd
17676      254       3910          22   XTAGE CORPORATION
 9583      243         37          21   Satyam Infoway Ltd.,
 4766      238       2461         170   Korea Internet Exchange for "
 3786      237        773         203   DACOM Corporation
 9800      198        326          56   CHINA UNICOM
 9443      182         58          82   Primus Telecommunications
 9498      176         16          33   BHARTI BT INTERNET LTD.
 4538      170       1538          21   China Education and Research 
 9929      170        155          34   China Netcom Corp.
17642      156         41         117   RequestDSL BGP AS# for Sydney
 9942      155         69         100   COMindico Australia
 9238      140          9          21   TATA ISP

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1485       8755        1043   UUNET Technologies, Inc. 
 7018     1388       7137         984   AT&T 
 1239      893       3030         643   Sprint 
 3908      888       1418         474   Supernet, Inc. 
  189      673        451         333   Genuity 
18566      672        160           8   Covad Communications 
 4323      624        551         179   Time Warner Communications, I
 6197      571        387         248   BellSouth Network Solutions, 
 7843      548        419         182   Adelphia Corp. 
  852      517       1123         411   Telus Advanced Communications
  209      514       2129         298   Qwest 
 6198      514        277         197   BellSouth Network Solutions, 
 7066      490        205         262   Virginia Polytechnic Institut
20115      480        200         290   Charter Communications 
 3356      475      10659         394   Level 3 Communications, LLC 
    1      467       1056         301   GENUITY 
  705      462        182         288   UUNET Technologies, Inc. 
 7132      413       6657         240   Southwestern Bell Internet Se
  690      410         59         276   Merit Network 
 4355      392        340         111   EarthLink, Inc. 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      727       2122         602   UUNET - Commercial IP service
 3301      294       1168         280   TeliaNet Sweden
 3320      268       1989         228   Deutsche Telekom AG
 1257      249        375         190   SWIPnet Swedish IP Network
 8220      246        431         235   COLT Internet - International
  680      232       2054         229   DFN-IP service G-WiN
 3215      213        736         120   France Telecom Transpac
  719      193        307         122   LANLINK autonomous system
 5515      185        779         148   Sonera Solution Autonomous Sy
 5400      180        175         131   BT Ignite European Backbone
  786      179       1874         179   The JANET IP Service
 8708      159        111         155   Romania Data Systems S.A.
 3303      143        540         140   Swisscom Ltd
12302      126         18          33   MobiFon S.A.
 3246      122        360         120   Song Networks
 3269      117        821          64   TELECOM ITALIA
 2856      112       1295         103   BTnet UK Regional network
 3352      111        828          31   Ibernet, Internet Access Netw
 2647      101       4129          45   SITA
 6746       88         12          75   Dynamic Network Technologies,

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      319        103         114   ImpSat
 7303      234         39          64   Telecom Argentina Stet-France
 8151      222        334         117   UniNet S.A. de C.V. 
11172      178         77          43   Servicios Alestra S.A de C.V 
16814      151         10          17   NSS, S.A. 
 6503      133        205          94   AVANTEL, S.A. 
10620      127          8          28   TVCABLE BOGOTA 
11340      108          3          39   Red Universitaria Nacional 
11992       86          8          36   Integrated Systems 
 6147       83         70          20   Telefonica Del Peru 
 8065       80          8          17   Empresas Publicas de Medellin
 6535       75          5          18   Chilesat Servicios  Empresari
15311       75         14          38   Telefonica Empresas 
11830       74          6          29   Instituto Costarricense de El
 1916       73        306          43   Fundacao de Amparo a Pesquisa
 4270       68         18           9   Red de Interconexion Universi
 7927       67          6          40   Global One Venezuela 
 7080       64          4           1   Electronica y Comunicaciones 
 7984       59         12          40   Global One Colombia 
13999       56         36           8   Mega Cable S.A. de C.V. 

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

  ASN   No of nets  Net Savings Description
18566       672         664      Covad Communications 
 4323       624         445      Time Warner Communications, I
 3908       888         414      Supernet, Inc. 
 7018      1388         404      AT&T 
 7843       548         366      Adelphia Corp. 
  189       673         340      Genuity 
 4755       398         325      Videsh Sanchar Nigam Ltd. Aut
 6197       571         323      BellSouth Network Solutions, 
11305       358         320      Interland Incorporated 
 6198       514         317      BellSouth Network Solutions, 
27364       317         294      Armstrong Cable Services 
 1221       981         287      Telstra Pty Ltd
 4355       392         281      EarthLink, Inc. 
 6347       356         277      SAVVIS Communications Corpora
22909       291         273      Comcast Cable Corporation 
 1239       893         250      Sprint 
  226       291         249      Los Nettos 
25844       241         239      Skadden, Arps, Slate, Meagher
  376       353         238      Reseau Interordinateurs Scien
17676       254         232      XTAGE CORPORATION

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

Bad AS  Designation  Network              Transit AS  Description
18413   UNALLOCATED   61.67.0.0/20          4747       Taiwan Telecommunica
 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 
192.228.80.0/24      30122     INTERNET SOFTWARE CONSORTIUM,

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

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:20       /9:4       /10:6       /11:12      /12:55      
/13:98      /14:262     /15:475     /16:7410    /17:1737    /18:3077    
/19:8443    /20:8712    /21:6362    /22:9430    /23:10907   /24:70278   
/25:168     /26:220     /27:150     /28:26      /29:13      /30:51      
/31:0       /32:27      

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

  ASN   No of nets  Total ann.   Description
18566      666           672      Covad Communications 
  189      588           673      Genuity 
 3908      566           888      Supernet, Inc. 
 7018      493          1388      AT&T 
  701      444          1485      UUNET Technologies, Inc. 
  702      442           727      UUNET - Commercial IP service
 6197      436           571      BellSouth Network Solutions, 
 6198      406           514      BellSouth Network Solutions, 
 7066      386           490      Virginia Polytechnic Institut
  690      371           410      Merit Network 
20115      328           480      Charter Communications 
27364      311           317      Armstrong Cable Services 
 1239      307           893      Sprint 
10753      298           312      XCOM Technologies, INC. 
11305      281           358      Interland Incorporated 
 7843      264           548      Adelphia Corp. 
25844      241           241      Skadden, Arps, Slate, Meagher
 4355      210           392      EarthLink, Inc. 
 3320      207           268      Deutsche Telekom AG
 3356      207           475      Level 3 Communications, LLC 

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

   4:2        12:703      13:1        15:4        16:1        17:4      
  20:6        24:838      25:1        32:85       38:45       40:23     
  44:2        55:1        57:14       61:300      62:393      63:1853   
  64:1781     65:1997     66:2693     67:257      68:390      69:256    
  80:409      81:124      82:13      128:130     129:171     130:62     
 131:82      132:13      134:172     135:7       136:186     137:114    
 138:117     139:47      140:146     141:134     142:99      143:45     
 144:90      145:13      146:275     147:62      148:302     149:76     
 150:123     151:68      152:218     153:57      154:4       155:127    
 156:68      157:48      158:118     159:135     160:45      161:75     
 162:360     163:78      164:312     165:146     166:96      167:312    
 168:179     169:95      170:321     171:9       192:5376    193:2477   
 194:1980    195:1186    196:473     198:3619    199:2739    200:2966   
 202:3890    203:5264    204:3021    205:2044    206:2337    207:2547   
 208:2565    209:2856    210:898     211:301     212:974     213:923    
 214:16      215:22      216:3276    217:707     218:102     219:74     
 220:102     221:10     

End of report



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