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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 08 Feb, 2002

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

BGP routing table entries examined:                            107908
    Prefixes after maximum aggregation:                         71978
    Unique aggregates announced to Internet:                    52602
Total ASes present in the Internet Routing Table:               12515
Origin-only ASes present in the Internet Routing Table:         10824
Origin ASes announcing only one prefix:                          4729
Transit ASes present in the Internet Routing Table:              1691
Transit-only ASes present in the Internet Routing Table:           60
Average AS path length visible in the Internet Routing Table:     5.4
    Max AS path length visible:                                    20
Illegal AS announcements present in the Routing Table:              2
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    15
Number of addresses announced to Internet:                 1164266760
    Equivalent to 69 /8s, 101 /16s and 77 /24s
    Percentage of available address space announced:             31.4
    Percentage of allocated address space announced:             59.4
    Percentage of available address space allocated:             52.8
Total number of prefixes smaller than registry allocations:     71887

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

Prefixes being announced by APNIC Region ASes:                  17523
    Total APNIC prefixes after maximum aggregation:             10668
Prefixes being announced from the APNIC address blocks:         16019
    Unique aggregates announced from the APNIC address blocks:   9821
APNIC Region origin ASes present in the Internet Routing Table:  1450
APNIC Region origin ASes announcing only one prefix:              481
APNIC Region transit ASes present in the Internet Routing Table:  253
Average APNIC Region AS path length visible:                      5.3
    Max APNIC Region AS path length visible:                       15
Number of APNIC addresses announced to Internet:             79436352
    Equivalent to 4 /8s, 188 /16s and 26 /24s
    Percentage of available APNIC address space announced:       58.7

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 220/8

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

Prefixes being announced by ARIN Region ASes:                   72415
    Total ARIN prefixes after maximum aggregation:              47252
Prefixes being announced from the ARIN address blocks:          51059
    Unique aggregates announced from the ARIN address blocks:   17199
ARIN Region origin ASes present in the Internet Routing Table:   7401
ARIN Region origin ASes announcing only one prefix:              2294
ARIN Region transit ASes present in the Internet Routing Table:   762
Average ARIN Region AS path length visible:                       5.3
    Max ARIN Region AS path length visible:                        20
Number of ARIN addresses announced to Internet:             185726788
    Equivalent to 11 /8s, 17 /16s and 247 /24s
    Percentage of available ARIN address space announced:        69.2

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

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

Prefixes being announced by RIPE Region ASes:                   17970
    Total RIPE prefixes after maximum aggregation:              14058
Prefixes being announced from the RIPE address blocks:          14778
    Unique aggregates announced from the RIPE address blocks:    9905
RIPE Region origin ASes present in the Internet Routing Table:   3603
RIPE Region origin ASes announcing only one prefix:              1954
RIPE Region transit ASes present in the Internet Routing Table:   657
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        15
Number of RIPE addresses announced to Internet:             106625024
    Equivalent to 6 /8s, 90 /16s and 248 /24s
    Percentage of available RIPE address space announced:        70.6

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     1318       1258         963   Telstra Pty Ltd
 4538      454       1162          16   China Education and Research 
  703      405        363         307   UUNET Technologies, Inc. 
 2907      395       1893         364   SINET Japan
 2764      392        361         369   connect.com.au pty ltd
 7474      301        290         204   Optus Communications Pty Ltd
 4755      287        111          89   Videsh Sanchar Nigam Ltd. Aut
 4134      269       1858         100   Data Communications Bureau
 9394      236        112           3   CHINA RAILWAY Internet(CRNET)
 4766      206       1393         145   Korea Internet Exchange for "
17557      200         15          90   Pakistan Telecom
 7539      162        220         155   TANet2, sponsored by NSC, TAI
 9443      161         44          59   Primus Telecommunications
 9768      146        385          88   Korea Telecom
 9583      139         32           5   Satyam Infoway Ltd.,
 4197      130         13           5   Global OnLine Japan K.K.
 4740      124         17         104   OzEmail ISP
 7657      121         22          84   The Internet Group Limited
 4713      117        914         103   NTT Communications Corporatio
 4780      115        186          40   Digital United Inc.

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702     1112       2619         863   UUNET Technologies, Inc. 
 3301      398        924         351   TeliaNet Sweden
 1257      252        487         248   SWIPnet Swedish IP Network
 3215      242        570         156   France Telecom / &Equant
  680      232       2147         230   DFN-IP service G-WiN
 5515      218        705         175   Sonera Finland Autonomous Sys
 5400      199         82          96   Concert European Core Network
 3320      196       1964         172   Deutsche Telekom AG
  786      182       1874         182   The JANET IP Service
  719      166        289         120   LANLINK autonomous system
 8708      159         21         145   Romania Data Systems S.A.
 2856      131        790         120   BTnet UK Regional network
 3303      122        576         122   Swisscom Ltd
 3269      117        693          71   TELECOM ITALIA
 8297      117         40          66   Teleglobe Autonomous System i
12302      114          7          35   MobiFon S.A.
  517      100        226          98   KPNQwest Germany GmbH
 5603       93         12          59   SiOL Internet d.o.o.
 5511       92        192          81   France Telecom
 1267       91       1471          41   Infostrada S.p.A.

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     2087       8303        1510   UUNET Technologies, Inc. 
 7018     1233       7510         928   AT&T 
    1      842       8153         613   BBN Planet 
 3908      810       1662         470   Supernet, Inc. 
 1239      795       3216         615   Sprint 
 4323      635        432         239   Time Warner Communications, I
 7046      632        833         417   UUNET Technologies, Inc. 
  852      616       1141         409   Telus Advanced Communications
  209      529       1908         301   Qwest 
  690      492         72         307   Merit Network 
 7132      455        508         163   Southwestern Bell Internet Se
 2914      453       2195         422   Verio, Inc. 
 3549      436        821         217   Global Crossing 
  705      390        116         274   UUNET Technologies, Inc. 
 2149      390        210         326   Performance Systems, Inc. 
 3561      369       2237         325   Cable & Wireless USA 
  577      352        604         219   Bell Advanced Communications 
 3741      348        731         239   The Internet Solution 
 2386      329        355         190   AT&T Data Communications Serv
 6197      327        227         161   BellSouth Network Solutions, 

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

  ASN   No of nets  Net Savings Description
 4538       454         438      China Education and Research 
 4323       635         396      Time Warner Communications, I
 1221      1318         355      Telstra Pty Ltd
 3908       810         340      Supernet, Inc. 
 7018      1233         305      AT&T 
 4151       311         295      USDA 
 7132       455         292      Southwestern Bell Internet Se
11371       278         271      Rhythms NetConnections 
  702      1112         249      UUNET Technologies, Inc. 
 9394       236         233      CHINA RAILWAY Internet(CRNET)
 6347       311         232      SAVVIS Communications Corpora
    1       842         229      BBN Planet 
  209       529         228      Qwest 
 7843       259         221      Adelphia Corp. 
 3549       436         219      Global Crossing 
 7046       632         215      UUNET Technologies, Inc. 
  852       616         207      Telus Advanced Communications
 4355       233         204      EarthLink, Inc. 
 6198       296         202      BellSouth Network Solutions, 
 1580       211         200      HQ, 5th Signal Command 

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

Bad AS  Designation  Network              Transit AS  Description
 1877   UNALLOCATED   192.108.201.0/24      1880       Stupi, house man's p
 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 
96.0.0.0/20           3549     Global Crossing 
126.0.0.0/8           7336     Compass Communications 
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     BBN Planet 
144.7.0.0/16           701     UUNET Technologies, Inc. 
153.36.0.0/14          701     UUNET Technologies, Inc. 
154.150.0.0/16        6494     IDCI 
158.0.0.0/13           568     DISO-UNRRA 
164.233.0.0/16        6020     DISA NETWORK SERVICES 
164.235.0.0/16        6025     US DOD NIC Unregistered
201.115.100.0/24      7018     AT&T 

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      
/13:91      /14:231     /15:392     /16:7137    /17:1421    /18:2498    
/19:7344    /20:6700    /21:4791    /22:7265    /23:8915    /24:60015   
/25:219     /26:278     /27:128     /28:100     /29:103     /30:162     
/31:0       /32:38      

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

  ASN   No of nets  Total ann.   Description
  701     1336          2087      UUNET Technologies, Inc. 
 1221     1172          1318      Telstra Pty Ltd
  702      735          1112      UUNET Technologies, Inc. 
 7018      646          1233      AT&T 
 3908      565           810      Supernet, Inc. 
 4323      517           635      Time Warner Communications, I
  690      488           492      Merit Network 
 1239      471           795      Sprint 
 7046      460           632      UUNET Technologies, Inc. 
    1      435           842      BBN Planet 
  852      375           616      Telus Advanced Communications
  209      351           529      Qwest 
 2764      348           392      connect.com.au pty ltd
  705      336           390      UUNET Technologies, Inc. 
  703      327           405      UUNET Technologies, Inc. 
 3549      305           436      Global Crossing 
 2149      297           390      Performance Systems, Inc. 
 7066      275           304      Virginia Polytechnic Institut
 6197      274           327      BellSouth Network Solutions, 
11371      272           278      Rhythms NetConnections 

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

   4:1         9:1        12:466      13:10       15:1        17:5      
  20:8        24:664      25:1        32:68       38:9        40:6      
  44:1        57:14       61:218      62:163      63:1874     64:1099   
  65:1028     66:668      67:32       68:5        80:179      81:4      
 128:65      129:119     130:23      131:52      132:11      133:3      
 134:128     135:10      136:243     137:105     138:148     139:47     
 140:163     141:61      142:67      143:39      144:154     145:12     
 146:216     147:148     148:144     149:86      150:40      151:43     
 152:328     153:32      154:8       155:81      156:77      157:120    
 158:80      159:88      160:24      161:55      162:101     163:117    
 164:95      165:126     166:222     167:167     168:114     169:48     
 170:291     171:3       192:5445    193:2232    194:2031    195:790    
 196:444     198:3736    199:3261    200:2315    201:1       202:2923   
 203:4507    204:3281    205:2157    206:2515    207:2628    208:2566   
 209:2850    210:525     211:146     212:865     213:553     214:9      
 215:19      216:2938    217:439     218:10     

End of report

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