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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 11 Jan, 2002

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

BGP routing table entries examined:                            108327
    Prefixes after maximum aggregation:                         71971
    Unique aggregates announced to Internet:                    52102
Total ASes present in the Internet Routing Table:               12321
Origin-only ASes present in the Internet Routing Table:         10681
Origin ASes announcing only one prefix:                          4609
Transit ASes present in the Internet Routing Table:              1640
Transit-only ASes present in the Internet Routing Table:           54
Average AS path length visible in the Internet Routing Table:     5.4
    Max AS path length visible:                                    16
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:    15
Number of addresses announced to Internet:                 1160494316
    Equivalent to 69 /8s, 43 /16s and 188 /24s
    Percentage of available address space announced:             31.3
    Percentage of allocated address space announced:             59.3
    Percentage of available address space allocated:             52.8
Total number of prefixes smaller than registry allocations:     72622

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

Prefixes being announced by APNIC Region ASes:                  17236
    Total APNIC prefixes after maximum aggregation:             10573
Prefixes being announced from the APNIC address blocks:         15769
    Unique aggregates announced from the APNIC address blocks:   9775
APNIC Region origin ASes present in the Internet Routing Table:  1429
APNIC Region origin ASes announcing only one prefix:              461
APNIC Region transit ASes present in the Internet Routing Table:  249
Average APNIC Region AS path length visible:                      5.4
    Max APNIC Region AS path length visible:                       14
Number of APNIC addresses announced to Internet:             78576448
    Equivalent to 4 /8s, 174 /16s and 251 /24s
    Percentage of available APNIC address space announced:       58.1

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:                   73241
    Total ARIN prefixes after maximum aggregation:              47487
Prefixes being announced from the ARIN address blocks:          52561
    Unique aggregates announced from the ARIN address blocks:   17034
ARIN Region origin ASes present in the Internet Routing Table:   7308
ARIN Region origin ASes announcing only one prefix:              2251
ARIN Region transit ASes present in the Internet Routing Table:   747
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        16
Number of ARIN addresses announced to Internet:             182810916
    Equivalent to 10 /8s, 229 /16s and 121 /24s
    Percentage of available ARIN address space announced:        68.1

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
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:                   17848
    Total RIPE prefixes after maximum aggregation:              13911
Prefixes being announced from the RIPE address blocks:          14578
    Unique aggregates announced from the RIPE address blocks:    9707
RIPE Region origin ASes present in the Internet Routing Table:   3531
RIPE Region origin ASes announcing only one prefix:              1897
RIPE Region transit ASes present in the Internet Routing Table:   634
Average RIPE Region AS path length visible:                       5.8
    Max RIPE Region AS path length visible:                        15
Number of RIPE addresses announced to Internet:             105449984
    Equivalent to 6 /8s, 73 /16s and 10 /24s
    Percentage of available RIPE address space announced:        69.8

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
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     1332       1241         985   Telstra Pty Ltd
 4538      448       1098          14   China Education and Research 
 2764      400        378         374   connect.com.au pty ltd
  703      397        337         304   UUNET Technologies, Inc. 
 2907      395       1940         363   SINET Japan
 4755      323        116          95   Videsh Sanchar Nigam Ltd. Aut
 7474      313        285         204   Optus Communications Pty Ltd
 4134      268       1858         100   Data Communications Bureau
 4766      198       1380         145   Korea Internet Exchange for "
17557      176         14          87   Pakistan Telecom
 9443      172         45          68   Primus Telecommunications
 9583      158         32           5   Satyam Infoway Ltd.,
 4740      145         34         119   OzEmail ISP
 9768      145        381          88   Korea Telecom
 1659      144        924          34   Taiwan Academic Network (TANe
 7657      123         21          83   The Internet Group Limited
17676      121       1920           7   XTAGE CORPORATION
 4780      117        186          40   Digital United Inc.
 4713      115        894         102   NTT Communications Corporatio
 9800      113        193          22   CHINA UNICOM

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702     1086       2635         859   UUNET Technologies, Inc. 
 3301      399        908         352   TeliaNet Sweden
 1257      254        489         248   SWIPnet Swedish IP Network
  680      233       2149         231   DFN-IP service G-WiN
 3215      232        562         151   France Telecom / &Equant
 5515      216        705         176   Sonera Finland Autonomous Sys
 3320      201       1961         169   Deutsche Telekom AG
  786      182       1874         182   The JANET IP Service
  719      164        289         118   LANLINK autonomous system
 8708      152         20         139   Romania Data Systems S.A.
 5400      147         60          86   Concert European Core Network
 5549      143         78          65   Nextra Deutschland GmbH + Co.
 2856      136        777         125   BTnet UK Regional network
 3303      126        575         124   Swisscom Ltd
 3269      115        663          70   TELECOM ITALIA
12302      112          7          36   MobiFon S.A.
 8297      110         37          62   Teleglobe Autonomous System i
  517      107        230         105   KPNQwest Germany GmbH
 1290       97        412          72   PSINet UK Ltd.
 5511       95        192          79   France Telecom

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     2143       8790        1533   UUNET Technologies, Inc. 
 7018     1152       7483         897   AT&T 
    1      874       8393         647   BBN Planet 
 3908      801       1638         475   Supernet, Inc. 
 1239      781       3157         604   Sprint 
 3967      770        361         332   Exodus Communication 
 8010      715         62          11   PublicNet Communications, Inc
 7046      684        822         440   UUNET Technologies, Inc. 
 4323      612        412         215   Time Warner Communications, I
  852      582        979         384   Telus Advanced Communications
  690      547         77         323   Merit Network 
  209      511       1876         298   Qwest 
  705      488        437         302   UUNET Technologies, Inc. 
 2914      459       2210         428   Verio, Inc. 
 4293      425         92         315   Cable & Wireless USA 
 7132      416        481         161   Southwestern Bell Internet Se
 3549      409        831         209   Global Crossing 
 2149      392        214         328   Performance Systems, Inc. 
 3561      375       2220         322   Cable & Wireless USA 
 4151      364        704          16   USDA 

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

  ASN   No of nets  Net Savings Description
 8010       715         704      PublicNet Communications, Inc
 3967       770         438      Exodus Communication 
 4538       448         434      China Education and Research 
 4323       612         397      Time Warner Communications, I
 4151       364         348      USDA 
 1221      1332         347      Telstra Pty Ltd
 3908       801         326      Supernet, Inc. 
11371       278         271      Rhythms NetConnections 
 7018      1152         255      AT&T 
 7132       416         255      Southwestern Bell Internet Se
 7046       684         244      UUNET Technologies, Inc. 
 6347       325         242      SAVVIS Communications Corpora
 4755       323         228      Videsh Sanchar Nigam Ltd. Aut
  702      1086         227      UUNET Technologies, Inc. 
    1       874         227      BBN Planet 
  690       547         224      Merit Network 
  209       511         213      Qwest 
 3549       409         200      Global Crossing 
 4355       229         199      EarthLink, Inc. 
  852       582         198      Telus Advanced Communications

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

Bad AS  Designation  Network              Transit AS  Description
65003   PRIVATE       64.80.126.0/23       15270       PaeTec.net -a divisi
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 
24583   UNALLOCATED   212.104.84.0/24        702       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         400     Headquarters Standard Systems
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. 
153.34.0.0/15          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
191.9.200.0/24        1290     PSINet UK Ltd.
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      /12:38      
/13:92      /14:230     /15:393     /16:7146    /17:1404    /18:2470    
/19:7241    /20:6539    /21:4834    /22:7264    /23:8998    /24:60685   
/25:231     /26:228     /27:133     /28:98      /29:75      /30:136     
/31:0       /32:49      

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

  ASN   No of nets  Total ann.   Description
  701     1372          2143      UUNET Technologies, Inc. 
 1221     1185          1332      Telstra Pty Ltd
  702      705          1086      UUNET Technologies, Inc. 
 8010      699           715      PublicNet Communications, Inc
 7018      602          1152      AT&T 
 3967      584           770      Exodus Communication 
 3908      559           801      Supernet, Inc. 
  690      543           547      Merit Network 
 7046      518           684      UUNET Technologies, Inc. 
 4323      506           612      Time Warner Communications, I
 1239      453           781      Sprint 
    1      448           874      BBN Planet 
 4293      412           425      Cable & Wireless USA 
  852      368           582      Telus Advanced Communications
  705      358           488      UUNET Technologies, Inc. 
 2764      355           400      connect.com.au pty ltd
  209      337           511      Qwest 
  703      324           397      UUNET Technologies, Inc. 
 4151      317           364      USDA 
 2149      296           392      Performance Systems, Inc. 

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

   4:3         7:1         9:1        12:454      13:10       15:2      
  17:5        20:1        24:779      25:1        32:74       38:13     
  40:4        43:1        44:2        52:1        57:14       61:226    
  62:152      63:1909     64:1497     65:994      66:760      67:25     
  68:15       80:139     128:63      129:119     130:23      131:44     
 132:13      133:2       134:121     135:10      136:120     137:101    
 138:62      139:30      140:72      141:57      142:64      143:41     
 144:54      145:12      146:214     147:60      148:164     149:88     
 150:39      151:43      152:386     153:34      154:7       155:85     
 156:81      157:117     158:72      159:76      160:26      161:54     
 162:96      163:129     164:125     165:112     166:217     167:160    
 168:113     169:47      170:281     171:2       191:1       192:5396   
 193:2064    194:2052    195:857     196:430     198:3735    199:3264   
 200:2393    201:1       202:2903    203:4518    204:3297    205:2187   
 206:2743    207:2736    208:2815    209:2889    210:552     211:152    
 212:874     213:515     214:7       215:16      216:2947    217:411    
 218:12     

End of report

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