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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   20:00 +10GMT Fri 18 Oct, 2002

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

BGP routing table entries examined:                            116117
    Prefixes after maximum aggregation:                         74648
    Unique aggregates announced to Internet:                    55576
Total ASes present in the Internet Routing Table:               13917
Origin-only ASes present in the Internet Routing Table:         12060
Origin ASes announcing only one prefix:                          5396
Transit ASes present in the Internet Routing Table:              1857
Transit-only ASes present in the Internet Routing Table:           60
Average AS path length visible in the Internet Routing Table:     5.3
    Max AS path length visible:                                    20
Illegal AS announcements present in the Routing Table:              3
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    35
Number of addresses announced to Internet:                 1176988512
    Equivalent to 70 /8s, 39 /16s and 107 /24s
    Percentage of available address space announced:             31.8
    Percentage of allocated address space announced:             58.2
    Percentage of available address space allocated:             54.6
Total number of prefixes smaller than registry allocations:     48263

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

Prefixes being announced by APNIC Region ASes:                  18960
    Total APNIC prefixes after maximum aggregation:             11438
Prefixes being announced from the APNIC address blocks:         17458
    Unique aggregates announced from the APNIC address blocks:  11051
APNIC Region origin ASes present in the Internet Routing Table:  1623
APNIC Region origin ASes announcing only one prefix:              522
APNIC Region transit ASes present in the Internet Routing Table:  274
Average APNIC Region AS path length visible:                      5.3
    Max APNIC Region AS path length visible:                       14
Number of APNIC addresses announced to Internet:             99347616
    Equivalent to 5 /8s, 235 /16s and 236 /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   61/8, 202/7, 210/7, 218/7 and 220/7

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

Prefixes being announced by ARIN Region ASes:                   72639
    Total ARIN prefixes after maximum aggregation:              46261
Prefixes being announced from the ARIN address blocks:          51036
    Unique aggregates announced from the ARIN address blocks:   15384
ARIN Region origin ASes present in the Internet Routing Table:   7831
ARIN Region origin ASes announcing only one prefix:              2585
ARIN Region transit ASes present in the Internet Routing Table:   748
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        14
Number of ARIN addresses announced to Internet:             181394040
    Equivalent to 10 /8s, 207 /16s and 218 /24s
    Percentage of available ARIN address space announced:        67.6

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
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:                   19733
    Total RIPE prefixes after maximum aggregation:              14890
Prefixes being announced from the RIPE address blocks:          16420
    Unique aggregates announced from the RIPE address blocks:   10966
RIPE Region origin ASes present in the Internet Routing Table:   4088
RIPE Region origin ASes announcing only one prefix:              2210
RIPE Region transit ASes present in the Internet Routing Table:   756
Average RIPE Region AS path length visible:                       5.8
    Max RIPE Region AS path length visible:                        20
Number of RIPE addresses announced to Internet:             116133696
    Equivalent to 6 /8s, 236 /16s and 15 /24s
    Percentage of available RIPE address space announced:        76.9

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
RIPE Address Blocks    62/8, 80/7, 193/8, 194/7, 212/7 and 217/8

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

Prefixes being announced by LACNIC Region ASes:                  4783
    Total LACNIC prefixes after maximum aggregation:             2059
Prefixes being announced from the LACNIC address blocks:         4120
    Unique aggregates announced from the LACNIC address blocks:  2640
LACNIC Region origin ASes present in the Internet Routing Table:  316
LACNIC Region origin ASes announcing only one prefix:              79
LACNIC Region transit ASes present in the Internet Routing Table:  68
Average LACNIC Region AS path length visible:                     5.9
    Max LACNIC Region AS path length visible:                      17
Number of LACNIC addresses announced to Internet:            11472896
    Equivalent to 0 /8s, 175 /16s and 16 /24s
    Percentage of available LACNIC address space announced:      68.4

LACNIC AS Blocks       26592 - 26623
LACNIC Address Blocks  200/8

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 1221     1192       1185         870   Telstra Pty Ltd
  703      399        368         315   UUNET
 2907      350       1751         330   SINET Japan
 2764      339        356         311   connect.com.au pty ltd
17557      304         22         118   Pakistan Telecom
 7474      299        275         202   Optus Communications Pty Ltd
 4134      297       2286          97   Data Communications Bureau
 4755      282        139          75   Videsh Sanchar Nigam Ltd. Aut
 4766      249       1808         157   Korea Internet Exchange for "
 4814      229         79          15   China Telecom (Group)
17676      224       3506          31   XTAGE CORPORATION
 9443      184         57          71   Primus Telecommunications
 9583      162         32           5   Satyam Infoway Ltd.,
 4515      136        102          77   Star Internet Services Ltd.
 9768      134        385          73   Korea Telecom
 7657      129         23          86   The Internet Group Limited
 4716      128        736         122   TTnet
 9800      122        188          24   CHINA UNICOM
 4739      117         56         108   Commerical Internet eXchange 
 4713      115       1049         104   NTT Communications Corporatio

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1789       9190        1275   UUNET Technologies, Inc. 
 7018     1348       7174         938   AT&T 
 3908     1073       1651         507   Supernet, Inc. 
 1239      882       3187         661   Sprint 
 7843      757        373         305   Adelphia Corp. 
  852      737       1145         457   Telus Advanced Communications
    1      657       8042         433   GENUITY 
 7132      591        673          68   Southwestern Bell Internet Se
 7046      580        894         299   UUNET Technologies, Inc. 
  209      572       2065         335   Qwest 
 4323      518        439         164   Time Warner Communications, I
  690      517         75         324   Merit Network 
  705      444        135         205   UUNET Technologies, Inc. 
 2548      426       1117         266   Business Internet, Inc. 
 3549      405        725         291   Global Crossing 
 6197      395        601          40   BellSouth Network Solutions, 
 6198      395        180         195   BellSouth Network Solutions, 
 4355      385        306         109   EarthLink, Inc. 
 2914      369       2020         358   Verio, Inc. 
15290      357        214         175   AT&T Canada IES 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      869       2390         725   UUNET - Commercial IP service
 3301      380       1164         334   TeliaNet Sweden
 3215      304        788         170   France Telecom Transpac
 3320      244       1966         221   Deutsche Telekom AG
  680      238       2151         234   DFN-IP service G-WiN
 5515      212        783         176   Sonera Solution Autonomous Sy
 1257      206        414         202   SWIPnet Swedish IP Network
 5400      204         83          97   BT Ignite European Backbone
  719      192        307         131   LANLINK autonomous system
  786      176       1873         176   The JANET IP Service
 2856      169        790         131   BTnet UK Regional network
 8708      153         41         146   Romania Data Systems S.A.
 3303      142        516         141   Swisscom Ltd
 3246      122        373         115   Song Networks
12302      122         17          29   MobiFon S.A.
 8220      113        168         104   COLT Internet - International
 3233      106         10           8   RNC - Romanian Natioanal R&D 
 3269      106        690          64   TELECOM ITALIA
 2874      103         85          39   Global One Services AB
 6830      102        222          12   UPC Distribution Services

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      247        114          58   ImpSat USA, Inc. 
 8151      200        330         109   UniNet S.A. de C.V. 
 7303      178         27          49   Telecom Argentina Stet-France
11172      168         72          33   Servicios Alestra S.A de C.V 
 6503      154        190         108   AVANTEL, S.A. 
16814      106          7          12   NSS, S.A. 
13999      105         20           7   Mega Cable S.A. de C.V. 
10620       99          6          30   TVCABLE BOGOTA 
11340       79          2          24   Red Universitaria Nacional 
15311       76         26          32   Telefonica Empresas 
 1916       73        409          40   Fundacao de Amparo a Pesquisa
11992       70          7          30   Integrated Systems 
 4270       68         18          10   Red de Interconexion Universi
15034       65          5          33   TIBA SA 
 4926       62          4          50   Telintar S.A. 
 7984       62         27          42   Global One Colombia 
 2277       61         16           3   ECUANET - CORPORACION ECUATOR
 8065       59          6          15   Empresas Publicas de Medellin
 7927       58          4          40   Global One Venezuela 
 6535       55          4          15   Chilesat Servicios  Empresari

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

  ASN   No of nets  Net Savings Description
 3908      1073         566      Supernet, Inc. 
 7132       591         523      Southwestern Bell Internet Se
 7843       757         452      Adelphia Corp. 
 7018      1348         410      AT&T 
 6197       395         355      BellSouth Network Solutions, 
 4323       518         354      Time Warner Communications, I
 1221      1192         322      Telstra Pty Ltd
18566       313         309      Covad Communications 
 1580       320         307      ANOSCEUR 
 7046       580         281      UUNET Technologies, Inc. 
  852       737         280      Telus Advanced Communications
 4355       385         276      EarthLink, Inc. 
 4151       292         276      USDA 
 6347       347         272      SAVVIS Communications Corpora
  705       444         239      UUNET Technologies, Inc. 
  209       572         237      Qwest 
  376       341         231      Reseau Interordinateurs Scien
    1       657         224      GENUITY 
 1239       882         221      Sprint 
 4814       229         214      China Telecom (Group)

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

Bad AS  Designation  Network              Transit AS  Description
65021   PRIVATE       128.216.1.0/24         619       Department of Navy 
65021   PRIVATE       128.216.4.0/24         619       Department of Navy 
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 

Advertised Unregistered Addresses
---------------------------------

Network            Origin AS  Description
39.0.0.0/8            4554     Exchange Point Blocks 
132.0.0.0/10           568     DISO-UNRRA 
134.137.0.0/16        7170     AT&T Government Markets 
135.0.0.0/13         10455     Lucent Technologies 
137.0.0.0/13           568     DISO-UNRRA 
138.94.0.0/16            1     GENUITY 
158.0.0.0/13           568     DISO-UNRRA 
164.233.0.0/16        6020     DISA NETWORK SERVICES 
164.236.0.0/16         568     DISO-UNRRA 
192.31.242.0/24        771     NASA Ames Research Center 
192.44.0.0/19          702     UUNET - Commercial IP service
192.72.0.0/18         4780     Digital United Inc.
192.72.0.0/16         4780     Digital United Inc.
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
192.91.198.0/24       2568     CTS Network Services 
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T 
192.136.79.0/24        719     LANLINK autonomous system
192.136.86.0/24        719     LANLINK autonomous system
192.136.87.0/24        719     LANLINK autonomous system
192.136.88.0/24        719     LANLINK autonomous system
192.136.136.0/24      7046     UUNET Technologies, Inc. 
192.136.136.0/22       568     DISO-UNRRA 
192.139.62.0/24       6539     GT Group Telecom Services Cor
192.140.0.0/16        5511     France Telecom
192.153.136.0/21       568     DISO-UNRRA 
192.156.0.0/19         568     DISO-UNRRA 
192.156.164.0/24     19548     Adelphia Business Solutions 
192.172.0.0/19         568     DISO-UNRRA 
192.208.29.0/24       3908     Supernet, Inc. 
192.208.30.0/23       3908     Supernet, Inc. 
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       /10:7       /11:12      /12:46      
/13:90      /14:241     /15:430     /16:7281    /17:1501    /18:2732    
/19:7875    /20:7533    /21:5332    /22:8177    /23:10025   /24:64039   
/25:178     /26:219     /27:115     /28:79      /29:54      /30:96      
/31:1       /32:32      

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

  ASN   No of nets  Total ann.   Description
 3908      639          1073      Supernet, Inc. 
 7843      569           757      Adelphia Corp. 
  702      536           869      UUNET - Commercial IP service
  701      493          1789      UUNET Technologies, Inc. 
  690      465           517      Merit Network 
 7018      434          1348      AT&T 
 6198      311           395      BellSouth Network Solutions, 
18566      307           313      Covad Communications 
 1580      306           320      ANOSCEUR 
 6197      279           395      BellSouth Network Solutions, 
 1239      267           882      Sprint 
 7046      266           580      UUNET Technologies, Inc. 
  209      254           572      Qwest 
 3215      229           304      France Telecom Transpac
 3301      226           380      TeliaNet Sweden
11492      221           226      Cable One 
 4355      218           385      EarthLink, Inc. 
 7066      205           307      Virginia Polytechnic Institut
 3320      186           244      Deutsche Telekom AG
 5400      184           204      BT Ignite European Backbone

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

   4:5        12:563      13:10       15:4        17:7        20:4      
  24:862      25:1        32:42       38:27       40:10       44:1      
  55:1        57:14       61:360      62:244      63:1899     64:1282   
  65:1598     66:1195     67:116      68:183      69:17       80:301    
  81:61      128:128     129:117     130:19      131:62      132:9      
 133:2       134:131     135:7       136:512     137:106     138:203    
 139:71      140:168     141:77      142:69      143:44      144:151    
 145:18      146:232     147:224     148:253     149:78      150:41     
 151:94      152:295     153:38      154:8       155:104     156:103    
 157:105     158:71      159:145     160:20      161:75      162:123    
 163:84      164:82      165:128     166:104     167:289     168:305    
 169:61      170:202     171:6       192:5382    193:2364    194:2009   
 195:820     196:435     198:3624    199:3077    200:2523    202:3483   
 203:4837    204:3293    205:2108    206:2386    207:2497    208:2574   
 209:2568    210:601     211:276     212:877     213:791     214:9      
 215:19      216:2959    217:504     218:49      219:3      

End of report

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