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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   04:00 30 Nov, 2001

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

BGP routing table entries examined:                            107754
Total ASes present in the Internet Routing Table:               12188
Origin-only ASes present in the Internet Routing Table:         10581
Origin ASes announcing only one prefix:                          4559
Transit ASes present in the Internet Routing Table:              1607
Transit-only ASes present in the Internet Routing Table:           57
Average AS path length visible in the Internet Routing Table:     5.3
    Max AS path length visible:                                    16
Illegal AS announcements present in the Routing Table:             10
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:                 1261439733
    Equivalent to 75 /8s, 48 /16s and 10 /24s
    Percentage of available address space announced:             34.0
    Percentage of allocated address space announced:             65.0
    Percentage of available address space allocated:             52.4
Total number of prefixes smaller than registry allocations:     72710

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

Prefixes being announced by APNIC Region ASes:                  17003
Prefixes being announced from the APNIC address blocks:         15490
APNIC Region origin ASes present in the Internet Routing Table:  1413
APNIC Region origin ASes announcing only one prefix:              462
APNIC Region transit ASes present in the Internet Routing Table:  245
Average APNIC Region AS path length visible:                      5.1
    Max APNIC Region AS path length visible:                       14
Number of APNIC addresses announced to Internet:             89518998
    Equivalent to 5 /8s, 85 /16s and 243 /24s
    Percentage of available APNIC address space announced:       75.6

APNIC AS Blocks        4608 - 4864, 7467 - 7722, 9216 - 10239
                       17408 - 18431, 23552 - 24575
APNIC Address Blocks   61/8, 202/7, 210/7 and 218/7

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

Prefixes being announced by ARIN Region ASes:                   72912
Prefixes being announced from the ARIN address blocks:          52282
ARIN Region origin ASes present in the Internet Routing Table:   7240
ARIN Region origin ASes announcing only one prefix:              2227
ARIN Region transit ASes present in the Internet Routing Table:   742
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        16
Number of ARIN addresses announced to Internet:             221982938
    Equivalent to 13 /8s, 59 /16s and 48 /24s
    Percentage of available ARIN address space announced:        82.7

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:                   17832
Prefixes being announced from the RIPE address blocks:          14513
RIPE Region origin ASes present in the Internet Routing Table:   3480
RIPE Region origin ASes announcing only one prefix:              1870
RIPE Region transit ASes present in the Internet Routing Table:   610
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        15
Number of RIPE addresses announced to Internet:             111005108
    Equivalent to 6 /8s, 157 /16s and 205 /24s
    Percentage of available RIPE address space announced:        73.5

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  Description
 1221     1532       1328       Telstra Pty Ltd
 2764      408        358       connect.com.au pty ltd
  703      380        335       UUNET Technologies, Inc. 
 2907      372       1863       SINET Japan
 4755      305        159       Videsh Sanchar Nigam Ltd. Aut
 7474      304        287       Optus Communications Pty Ltd
 4134      257       1948       Data Communications Bureau
 4766      185       1431       Korea Internet Exchange for "
 4740      177         40       OzEmail ISP
 9443      174         62       Primus Telecommunications
 2521      167        172       PSINet Japan
 1659      164       1124       Taiwan Academic Network (TANe
17557      163         13       Pakistan Telecom
 9583      155         47       Satyam Infoway Ltd.,
 4812      137        305       China Telecom (Group) - Shang
 7539      137        150       TANet2, sponsored by NSC, TAI
 4786      131         15       NetConnect Communications Pty
 9768      127        362       Korea Telecom
17676      125       1952       XTAGE CORPORATION
 7657      123         23       The Internet Group Limited

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

  ASN   No of nets  /20 equiv  Description
  702     1159       2778       UUNET Technologies, Inc. 
 3301      430        934       TeliaNet Sweden
 1257      268        500       SWIPnet Swedish IP Network
 3215      237        543       France Telecom / &Equant
  680      231       2148       DFN-IP service G-WiN
 5515      201        704       Sonera Finland Autonomous Sys
 3320      190       1959       Deutsche Telekom AG
  786      183       1874       The JANET IP Service
  719      166        292       LANLINK autonomous system
 8708      162         21       Romania Data Systems S.A.
 5400      142         62       Concert European Core Network
 2856      134        777       BTnet UK Regional network
 3303      132        561       Swisscom Ltd
 5549      121         82       Nextra Deutschland GmbH + Co.
  517      111        248       KPNQwest Germany GmbH
12302      107          7       MobiFon S.A.
 3269      105        799       TELECOM ITALIA
 1290      100        398       PSINet UK Ltd.
 8297       98         31       Teleglobe Autonomous System i
 5511       94        192       France Telecom

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

  ASN   No of nets  /20 equiv  Description
  701     2209       9159       UUNET Technologies, Inc. 
 7018     1090       7346       AT&T 
 3967     1028        483       Exodus Communication 
    1      841       8516       BBN Planet 
 1239      729       3388       Sprint 
 7046      729        889       UUNET Technologies, Inc. 
 8010      719        106       PublicNet Communications, Inc
 3908      696       1549       Supernet, Inc. 
  209      606       2217       Qwest 
 4323      585        477       Time Warner Communications, I
  852      543        697       Telus Advanced Communications
  690      502         71       Merit Network 
 2914      480       2268       Verio, Inc. 
  705      461        253       UUNET Technologies, Inc. 
 2149      437        251       Performance Systems, Inc. 
 3549      406        889       Global Crossing 
 3561      387       2288       Cable & Wireless USA 
 7132      386        534       Southwestern Bell Internet Se
 4151      368       1287       USDA 
 3741      350        766       The Internet Solution 

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  Description
  701     2209       9159       UUNET Technologies, Inc. 
 1221     1532       1328       Telstra Pty Ltd
  702     1159       2778       UUNET Technologies, Inc. 
 7018     1090       7346       AT&T 
 3967     1028        483       Exodus Communication 
    1      841       8516       BBN Planet 
 1239      729       3388       Sprint 
 7046      729        889       UUNET Technologies, Inc. 
 8010      719        106       PublicNet Communications, Inc
 3908      696       1549       Supernet, Inc. 
  209      606       2217       Qwest 
 4323      585        477       Time Warner Communications, I
  852      543        697       Telus Advanced Communications
  690      502         71       Merit Network 
 2914      480       2268       Verio, Inc. 
  705      461        253       UUNET Technologies, Inc. 
 2149      437        251       Performance Systems, Inc. 
 3301      430        934       TeliaNet Sweden
 2764      408        358       connect.com.au pty ltd
 3549      406        889       Global Crossing 

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

Bad AS  Designation  Network              Transit AS  Description
 2027   UNALLOCATED   150.185.128.0/18      8143       Publicom Corp. 
65025   PRIVATE       168.95.70.0/24        3462       Data Communication B
65025   PRIVATE       168.95.71.0/24        3462       Data Communication B
65025   PRIVATE       168.95.86.32/27       3462       Data Communication B
65026   PRIVATE       168.95.86.128/27      3462       Data Communication B
65026   PRIVATE       168.95.160.0/24       3462       Data Communication B
65026   PRIVATE       168.95.161.0/24       3462       Data Communication B
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 
65515   PRIVATE       212.110.142.0/24      5593       CRIS-AS
17940   UNALLOCATED   218.45.0.0/20         4713       NTT Communications C

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       /9:5       /10:7       /11:12      /12:36      
/13:90      /14:221     /15:385     /16:7091    /17:1356    /18:2451    
/19:7110    /20:6124    /21:4696    /22:7090    /23:8861    /24:60637   
/25:328     /26:319     /27:268     /28:236     /29:151     /30:189     
/31:0       /32:73      

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

  ASN   No of nets  Total ann.   Description
  701     1406          2209      UUNET Technologies, Inc. 
 1221     1386          1532      Telstra Pty Ltd
 3967      845          1028      Exodus Communication 
  702      761          1159      UUNET Technologies, Inc. 
 8010      703           719      PublicNet Communications, Inc
 7018      564          1090      AT&T 
 7046      562           729      UUNET Technologies, Inc. 
  690      499           502      Merit Network 
 4323      495           585      Time Warner Communications, I
 3908      472           696      Supernet, Inc. 
  209      435           606      Qwest 
    1      413           841      BBN Planet 
 1239      406           729      Sprint 
  705      368           461      UUNET Technologies, Inc. 
 2764      366           408      connect.com.au pty ltd
  852      363           543      Telus Advanced Communications
 2149      329           437      Performance Systems, Inc. 
 4151      322           368      USDA 
  703      310           380      UUNET Technologies, Inc. 
 3549      274           406      Global Crossing 

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

   4:4         9:1        12:422      13:10       15:1        17:5      
  20:1        24:859      25:1        26:1        32:72       38:13     
  40:1        43:1        44:2        52:1        53:2        57:12     
  61:124      62:162      63:1916     64:1496     65:964      66:741    
  67:8        80:108     128:61      129:111     130:23      131:44     
 132:14      133:2       134:137     135:10      136:114     137:102    
 138:63      139:30      140:98      141:59      142:65      143:43     
 144:54      145:13      146:211     147:90      148:128     149:88     
 150:42      151:38      152:390     153:51      154:6       155:85     
 156:89      157:114     158:69      159:71      160:45      161:51     
 162:82      163:130     164:121     165:99      166:205     167:162    
 168:121     169:46      170:301     171:2       191:1       192:5370   
 193:2097    194:2091    195:821     196:446     198:3748    199:3377   
 200:2409    201:1       202:2843    203:4582    204:3313    205:2132   
 206:2615    207:2658    208:2738    209:2999    210:591     211:146    
 212:912     213:537     214:9       215:15      216:2948    217:423    
 218:7      

End of report

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