Weekly Routing Table Report

Routing Table Analysis cscora at thyme.apnic.net
Fri Aug 23 06:04:59 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 23 Aug, 2002

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

BGP routing table entries examined:                            114611
    Prefixes after maximum aggregation:                         74279
    Unique aggregates announced to Internet:                    55119
Total ASes present in the Internet Routing Table:               13599
Origin-only ASes present in the Internet Routing Table:         11764
Origin ASes announcing only one prefix:                          5242
Transit ASes present in the Internet Routing Table:              1835
Transit-only ASes present in the Internet Routing Table:           57
Average AS path length visible in the Internet Routing Table:     5.4
    Max AS path length visible:                                    18
Illegal AS announcements present in the Routing Table:              1
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    34
Number of addresses announced to Internet:                 1184116636
    Equivalent to 70 /8s, 148 /16s and 47 /24s
    Percentage of available address space announced:             31.9
    Percentage of allocated address space announced:             58.5
    Percentage of available address space allocated:             54.6
Total number of prefixes smaller than registry allocations:     46611

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

Prefixes being announced by APNIC Region ASes:                  18938
    Total APNIC prefixes after maximum aggregation:             11244
Prefixes being announced from the APNIC address blocks:         17468
    Unique aggregates announced from the APNIC address blocks:  10669
APNIC Region origin ASes present in the Internet Routing Table:  1589
APNIC Region origin ASes announcing only one prefix:              519
APNIC Region transit ASes present in the Internet Routing Table:  276
Average APNIC Region AS path length visible:                      5.3
    Max APNIC Region AS path length visible:                       12
Number of APNIC addresses announced to Internet:             93320032
    Equivalent to 5 /8s, 143 /16s and 243 /24s
    Percentage of available APNIC address space announced:       61.4

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:                   76288
    Total ARIN prefixes after maximum aggregation:              48338
Prefixes being announced from the ARIN address blocks:          54205
    Unique aggregates announced from the ARIN address blocks:   18196
ARIN Region origin ASes present in the Internet Routing Table:   7991
ARIN Region origin ASes announcing only one prefix:              2578
ARIN Region transit ASes present in the Internet Routing Table:   804
Average ARIN Region AS path length visible:                       5.3
    Max ARIN Region AS path length visible:                        18
Number of ARIN addresses announced to Internet:             191313008
    Equivalent to 11 /8s, 103 /16s and 52 /24s
    Percentage of available ARIN address space announced:        67.1

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 - 26623
ARIN Address Blocks    24/8, 63/8, 64/6, 68/7, 199/8, 200/8, 204/6,
                       208/7 and 216/8

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                   19385
    Total RIPE prefixes after maximum aggregation:              14697
Prefixes being announced from the RIPE address blocks:          16103
    Unique aggregates announced from the RIPE address blocks:   10606
RIPE Region origin ASes present in the Internet Routing Table:   3962
RIPE Region origin ASes announcing only one prefix:              2145
RIPE Region transit ASes present in the Internet Routing Table:   742
Average RIPE Region AS path length visible:                       5.8
    Max RIPE Region AS path length visible:                        17
Number of RIPE addresses announced to Internet:             113397760
    Equivalent to 6 /8s, 194 /16s and 80 /24s
    Percentage of available RIPE address space announced:        75.1

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 1221     1208       1189         886   Telstra Pty Ltd
 4538      577       1330          18   China Education and Research 
  703      412        376         321   UUNET
 2907      365       1833         343   SINET Japan
 2764      358        358         329   connect.com.au pty ltd
 7474      317        292         212   Optus Communications Pty Ltd
 4134      301       2222          96   Data Communications Bureau
 4755      282        142          74   Videsh Sanchar Nigam Ltd. Aut
17557      272         20          96   Pakistan Telecom
 4766      250       1507         157   Korea Internet Exchange for "
 4814      231         79          14   China Telecom (Group)
17676      190       2962          35   XTAGE CORPORATION
 9443      178         57          66   Primus Telecommunications
 9583      171         32           5   Satyam Infoway Ltd.,
 7539      146        188         141   TANet2, sponsored by NSC, TAI
 9768      144        385          74   Korea Telecom
 7657      131         22          91   The Internet Group Limited
 9800      121        187          23   CHINA UNICOM
 4621      113         11          64   UNINET-TH
 4713      113        993         104   NTT Communications Corporatio

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      895       2430         751   UUNET - Commercial IP service
 3301      399        924         346   TeliaNet Sweden
 5515      320        783         180   Sonera Solution Autonomous Sy
 3215      291        641         180   France Telecom Transpac
 3320      246       1964         212   Deutsche Telekom AG
  680      237       2150         234   DFN-IP service G-WiN
 5400      213         85         101   BT Ignite European Backbone
 1257      210        444         205   SWIPnet Swedish IP Network
  719      185        306         129   LANLINK autonomous system
  786      177       1873         177   The JANET IP Service
 8708      145         41         141   Romania Data Systems S.A.
 3303      143        546         142   Swisscom Ltd
 2856      126        786         116   BTnet UK Regional network
12302      126         18          33   MobiFon S.A.
 3246      112        317         107   Song Networks
 5511      110        192          88   France Telecom
 3233      108         10           9   RNC - Romanian Natioanal R&D 
 3269      106        658          63   TELECOM ITALIA
 2874      102         85          39   Global One Services AB
 8220      100        166          96   COLT Internet - International

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1788       9110        1362   UUNET Technologies, Inc. 
 7018     1295       7213         924   AT&T 
 3908     1019       1660         496   Supernet, Inc. 
 1239      821       3192         644   Sprint 
  852      731       1175         451   Telus Advanced Communications
    1      670       8039         431   GENUITY 
 7843      656        371         273   Adelphia Corp. 
 7046      615        882         318   UUNET Technologies, Inc. 
 7132      594        664         137   Southwestern Bell Internet Se
 4323      551        434         172   Time Warner Communications, I
  690      519         75         326   Merit Network 
  209      509       2074         346   Qwest 
 7066      489        203         256   Virginia Polytechnic Institut
 2548      459       1145         272   Business Internet, Inc. 
 3549      421        726         302   Global Crossing 
15290      373        249         188   AT&T Canada IES 
 6197      362        254         182   BellSouth Network Solutions, 
 2914      359       2042         359   Verio, Inc. 
 6347      347        370          76   SAVVIS Communications Corpora
  376      340        391         107   Reseau Interordinateurs Scien

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

  ASN   No of nets  Net Savings Description
 4538       577         559      China Education and Research 
 3908      1019         523      Supernet, Inc. 
 7132       594         457      Southwestern Bell Internet Se
 7843       656         383      Adelphia Corp. 
 4323       551         379      Time Warner Communications, I
 7018      1295         371      AT&T 
 1221      1208         322      Telstra Pty Ltd
 7046       615         297      UUNET Technologies, Inc. 
 4151       305         289      USDA 
  852       731         280      Telus Advanced Communications
 6347       347         271      SAVVIS Communications Corpora
 4355       340         268      EarthLink, Inc. 
18566       260         256      Covad Communications 
    1       670         239      GENUITY 
 7066       489         233      Virginia Polytechnic Institut
  376       340         233      Reseau Interordinateurs Scien
 4814       231         217      China Telecom (Group)
 4755       282         208      Videsh Sanchar Nigam Ltd. Aut
 4134       301         205      Data Communications Bureau
 1580       212         200      ANOSCEUR 

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

Bad AS  Designation  Network              Transit AS  Description
 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 
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      /12:37      
/13:86      /14:235     /15:424     /16:7306    /17:1482    /18:2678    
/19:7808    /20:7596    /21:5291    /22:8015    /23:9696    /24:63175   
/25:208     /26:192     /27:109     /28:77      /29:41      /30:76      
/31:1       /32:35      

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

  ASN   No of nets  Total ann.   Description
 3908      601          1019      Supernet, Inc. 
  702      546           895      UUNET - Commercial IP service
  701      496          1788      UUNET Technologies, Inc. 
  690      465           519      Merit Network 
 7843      456           656      Adelphia Corp. 
 7066      388           489      Virginia Polytechnic Institut
 7018      385          1295      AT&T 
 7046      290           615      UUNET Technologies, Inc. 
 6197      263           362      BellSouth Network Solutions, 
18566      256           260      Covad Communications 
 6198      242           318      BellSouth Network Solutions, 
 3301      237           399      TeliaNet Sweden
 1239      224           821      Sprint 
 3215      223           291      France Telecom Transpac
 1580      199           212      ANOSCEUR 
 4355      195           340      EarthLink, Inc. 
 4323      190           551      Time Warner Communications, I
  209      187           509      Qwest 
 5400      187           213      BT Ignite European Backbone
 4538      186           577      China Education and Research 

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

   3:1         4:3        12:543      13:10       15:2        17:6      
  20:4        24:818      25:1        32:41       38:8        40:6      
  44:1        55:1        57:14       61:317      62:237      63:1852   
  64:1234     65:1455     66:1049     67:96       68:92       80:262    
  81:45      128:65      129:157     130:21      131:55      132:11     
 133:2       134:124     135:9       136:502     137:96      138:147    
 139:67      140:188     141:73      142:68      143:50      144:139    
 145:17      146:258     147:142     148:249     149:80      150:41     
 151:57      152:266     153:37      154:11      155:116     156:71     
 157:114     158:67      159:140     160:20      161:73      162:124    
 163:87      164:264     165:127     166:103     167:265     168:120    
 169:62      170:192     171:3       192:5483    193:2370    194:2083   
 195:814     196:415     198:3671    199:3128    200:2612    202:3336   
 203:4731    204:3238    205:2150    206:2512    207:2498    208:2595   
 209:2693    210:611     211:238     212:880     213:722     214:8      
 215:20      216:2856    217:498     218:34      219:1      

End of report



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