Weekly Routing Table Report

Routing Table Analysis cscora at thyme.apnic.net
Fri Sep 20 06:05:01 EDT 2002


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 20 Sep, 2002

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

BGP routing table entries examined:                            114692
    Prefixes after maximum aggregation:                         74114
    Unique aggregates announced to Internet:                    55245
Total ASes present in the Internet Routing Table:               13774
Origin-only ASes present in the Internet Routing Table:         11914
Origin ASes announcing only one prefix:                          5352
Transit ASes present in the Internet Routing Table:              1860
Transit-only ASes present in the Internet Routing Table:           62
Average AS path length visible in the Internet Routing Table:     5.4
    Max AS path length visible:                                    23
Illegal AS announcements present in the Routing Table:             12
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    36
Number of addresses announced to Internet:                 1189119916
    Equivalent to 70 /8s, 224 /16s and 135 /24s
    Percentage of available address space announced:             32.1
    Percentage of allocated address space announced:             58.8
    Percentage of available address space allocated:             54.6
Total number of prefixes smaller than registry allocations:     47095

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

Prefixes being announced by APNIC Region ASes:                  18750
    Total APNIC prefixes after maximum aggregation:             11397
Prefixes being announced from the APNIC address blocks:         17261
    Unique aggregates announced from the APNIC address blocks:  10929
APNIC Region origin ASes present in the Internet Routing Table:  1617
APNIC Region origin ASes announcing only one prefix:              531
APNIC Region transit ASes present in the Internet Routing Table:  279
Average APNIC Region AS path length visible:                      5.3
    Max APNIC Region AS path length visible:                       12
Number of APNIC addresses announced to Internet:             97317856
    Equivalent to 5 /8s, 204 /16s and 243 /24s
    Percentage of available APNIC address space announced:       64.0

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:                   71523
    Total ARIN prefixes after maximum aggregation:              45806
Prefixes being announced from the ARIN address blocks:          50330
    Unique aggregates announced from the ARIN address blocks:   15470
ARIN Region origin ASes present in the Internet Routing Table:   7743
ARIN Region origin ASes announcing only one prefix:              2547
ARIN Region transit ASes present in the Internet Routing Table:   743
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        23
Number of ARIN addresses announced to Internet:             181080384
    Equivalent to 10 /8s, 203 /16s and 17 /24s
    Percentage of available ARIN address space announced:        67.5

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
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:                   19553
    Total RIPE prefixes after maximum aggregation:              14816
Prefixes being announced from the RIPE address blocks:          16175
    Unique aggregates announced from the RIPE address blocks:   10715
RIPE Region origin ASes present in the Internet Routing Table:   4039
RIPE Region origin ASes announcing only one prefix:              2190
RIPE Region transit ASes present in the Internet Routing Table:   755
Average RIPE Region AS path length visible:                       5.8
    Max RIPE Region AS path length visible:                        16
Number of RIPE addresses announced to Internet:             113790080
    Equivalent to 6 /8s, 200 /16s and 76 /24s
    Percentage of available RIPE address space announced:        75.4

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:                  4858
    Total LACNIC prefixes after maximum aggregation:             2095
Prefixes being announced from the LACNIC address blocks:         4207
    Unique aggregates announced from the LACNIC address blocks:  2631
LACNIC Region origin ASes present in the Internet Routing Table:  315
LACNIC Region origin ASes announcing only one prefix:              84
LACNIC Region transit ASes present in the Internet Routing Table:  70
Average LACNIC Region AS path length visible:                     6.0
    Max LACNIC Region AS path length visible:                      17
Number of LACNIC addresses announced to Internet:            11206656
    Equivalent to 0 /8s, 171 /16s and 0 /24s
    Percentage of available LACNIC address space announced:      66.8

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     1196       1187         881   Telstra Pty Ltd
  703      392        367         307   UUNET
 2907      361       1832         340   SINET Japan
 2764      348        357         321   connect.com.au pty ltd
 7474      306        275         206   Optus Communications Pty Ltd
 4134      292       2268          96   Data Communications Bureau
17557      283         21         111   Pakistan Telecom
 4755      260        142          75   Videsh Sanchar Nigam Ltd. Aut
 4766      248       1792         156   Korea Internet Exchange for "
 4814      221         79          15   China Telecom (Group)
17676      220       3442          29   XTAGE CORPORATION
 9443      184         57          70   Primus Telecommunications
 9583      175         32           5   Satyam Infoway Ltd.,
 9768      145        385          74   Korea Telecom
 4515      138        102          79   Star Internet Services Ltd.
 7657      128         22          89   The Internet Group Limited
 9800      122        188          24   CHINA UNICOM
 4739      117         56         108   Commerical Internet eXchange 
 4713      116       1049         105   NTT Communications Corporatio
 9498      102          8          23   BHARTI BT INTERNET LTD.

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1798       9246        1295   UUNET Technologies, Inc. 
 7018     1318       7193         934   AT&T 
 3908     1045       1652         507   Supernet, Inc. 
 1239      853       3194         656   Sprint 
  852      743       1160         455   Telus Advanced Communications
 7843      665        372         250   Adelphia Corp. 
    1      656       8088         433   GENUITY 
 7132      601        654         141   Southwestern Bell Internet Se
 7046      590        863         313   UUNET Technologies, Inc. 
 4323      527        435         165   Time Warner Communications, I
  690      519         75         326   Merit Network 
  209      514       2066         347   Qwest 
 7066      490        204         258   Virginia Polytechnic Institut
 2548      444       1118         272   Business Internet, Inc. 
 3549      417        727         300   Global Crossing 
 6197      381        597          39   BellSouth Network Solutions, 
 4355      363        289          87   EarthLink, Inc. 
15290      363        230         180   AT&T Canada IES 
 2914      362       2026         357   Verio, Inc. 
 6347      346        371          78   SAVVIS Communications Corpora

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      878       2414         732   UUNET - Commercial IP service
 3301      387        907         343   TeliaNet Sweden
 3215      292        673         179   France Telecom Transpac
 3320      249       1965         215   Deutsche Telekom AG
  680      238       2151         234   DFN-IP service G-WiN
 5515      215        783         178   Sonera Solution Autonomous Sy
 5400      214         86         101   BT Ignite European Backbone
 1257      202        444         199   SWIPnet Swedish IP Network
  719      189        306         130   LANLINK autonomous system
  786      177       1873         177   The JANET IP Service
 8708      147         41         142   Romania Data Systems S.A.
 3303      143        532         142   Swisscom Ltd
 2856      125        785         115   BTnet UK Regional network
12302      124         18          31   MobiFon S.A.
 3246      123        373         116   Song Networks
 5511      110        192          88   France Telecom
 3233      108         10           9   RNC - Romanian Natioanal R&D 
 3269      104        658          63   TELECOM ITALIA
 8220      104        167          98   COLT Internet - International
 2874      103         85          40   Global One Services AB

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      189        305         106   UniNet S.A. de C.V. 
 7303      171         27          49   Telecom Argentina Stet-France
11172      167         88          34   Servicios Alestra S.A de C.V 
 6503      161        191         116   AVANTEL, S.A. 
11340      147          4          48   Red Universitaria Nacional 
10834      145         91          34   ADVANCE TELECOMUNICACIONES S.
16814      107          7          13   NSS, S.A. 
13999      103         19           8   Mega Cable S.A. de C.V. 
 6140       95         52          23   ImpSat USA, Inc. 
10620       93          6          29   TVCABLE BOGOTA 
15034       76          6          31   TIBA SA 
 1916       72        409          40   Fundacao de Amparo a Pesquisa
11992       72          7          29   Integrated Systems 
 2277       69         16           3   ECUANET - CORPORACION ECUATOR
 7984       69         27          43   Global One Colombia 
 4270       68         18          10   Red de Interconexion Universi
15311       68         24          31   Telefonica Empresas 
 4926       65          4          53   Telintar S.A. 
 8065       59          6          16   Empresas Publicas de Medellin
 7993       58          9          30   Global One Chile 

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

  ASN   No of nets  Net Savings Description
 3908      1045         538      Supernet, Inc. 
 7132       601         460      Southwestern Bell Internet Se
 7843       665         415      Adelphia Corp. 
 7018      1318         384      AT&T 
 4323       527         362      Time Warner Communications, I
 6197       381         342      BellSouth Network Solutions, 
 1221      1196         315      Telstra Pty Ltd
  852       743         288      Telus Advanced Communications
 7046       590         277      UUNET Technologies, Inc. 
 4355       363         276      EarthLink, Inc. 
 4151       285         270      USDA 
 6347       346         268      SAVVIS Communications Corpora
18566       272         268      Covad Communications 
  376       343         233      Reseau Interordinateurs Scien
 7066       490         232      Virginia Polytechnic Institut
    1       656         223      GENUITY 
 4814       221         206      China Telecom (Group)
 1580       211         199      ANOSCEUR 
11492       209         198      Cable One 
 1239       853         197      Sprint 

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

Bad AS  Designation  Network              Transit AS  Description
  578   UNALLOCATED   199.243.116.0/22       577       Bell Advanced Commun
64562   PRIVATE       203.152.128.0/21     11919       Loral Orion Services
64562   PRIVATE       203.152.136.0/21     11919       Loral Orion Services
65011   PRIVATE       207.8.204.0/24        4231       You Tools Corporatio
65011   PRIVATE       207.8.227.0/24        4231       You Tools Corporatio
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 
  578   UNALLOCATED   207.61.186.0/24        577       Bell Advanced Commun
65506   PRIVATE       207.106.30.0/24       4231       You Tools Corporatio
65011   PRIVATE       207.106.58.0/24       4231       You Tools Corporatio
65011   PRIVATE       207.106.90.0/24       4231       You Tools Corporatio
65011   PRIVATE       207.106.122.0/24      4231       You Tools Corporatio
  578   UNALLOCATED   216.209.156.0/24       577       Bell Advanced Commun

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
192.58.92.0/24       19548     Adelphia Business Solutions 
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       7168     Northwest Link 

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

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:18       /9:6       /10:7       /11:12      /12:36      
/13:89      /14:236     /15:428     /16:7268    /17:1485    /18:2685    
/19:7843    /20:7498    /21:5258    /22:8059    /23:9726    /24:63159   
/25:204     /26:243     /27:137     /28:83      /29:48      /30:111     
/31:0       /32:53      

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

  ASN   No of nets  Total ann.   Description
 3908      615          1045      Supernet, Inc. 
  702      538           878      UUNET - Commercial IP service
  701      492          1798      UUNET Technologies, Inc. 
 7843      469           665      Adelphia Corp. 
  690      465           519      Merit Network 
 7018      399          1318      AT&T 
 7066      388           490      Virginia Polytechnic Institut
 7046      279           590      UUNET Technologies, Inc. 
18566      268           272      Covad Communications 
 6197      266           381      BellSouth Network Solutions, 
 6198      243           312      BellSouth Network Solutions, 
 1239      240           853      Sprint 
 3301      229           387      TeliaNet Sweden
 3215      224           292      France Telecom Transpac
 4355      205           363      EarthLink, Inc. 
11492      205           209      Cable One 
 1580      198           211      ANOSCEUR 
 5400      188           214      BT Ignite European Backbone
  209      187           514      Qwest 
 3320      180           249      Deutsche Telekom AG

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

   4:1        12:553      13:10       15:2        17:7        20:4      
  24:821      25:1        32:41       38:7        40:6        44:1      
  55:1        57:14       61:337      62:235      63:1844     64:1273   
  65:1504     66:1181     67:105      68:97       80:281      81:53     
 128:59      129:157     130:21      131:55      132:11      133:2      
 134:129     135:9       136:575     137:94      138:157     139:69     
 140:155     141:70      142:70      143:51      144:141     145:17     
 146:260     147:142     148:248     149:79      150:42      151:57     
 152:299     153:37      154:10      155:101     156:102     157:110    
 158:65      159:137     160:24      161:74      162:116     163:86     
 164:261     165:125     166:105     167:267     168:126     169:59     
 170:175     171:3       192:5382    193:2358    194:2024    195:800    
 196:431     198:3560    199:3084    200:2622    202:3376    203:4803   
 204:3271    205:2143    206:2408    207:2462    208:2559    209:2611   
 210:606     211:245     212:882     213:735     214:8       215:19     
 216:2896    217:495     218:46      219:2      

End of report



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