Weekly Routing Table Report

Routing Analysis cscora at dev.apnic.net
Thu Apr 12 14:30:40 EDT 2001


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   13 Apr, 2001

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

BGP routing table entries examined:                            103359
Origin ASes present in the Internet Routing Table:              10563
Origin ASes announcing only one prefix:                          3791
Transit ASes present in the Internet Routing Table:              1417
Average AS path length visible in the Internet Routing Table:     5.3
    Max AS path length visible:                                    15
Illegal AS announcements present in the Routing Table:             23
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:     4
Number of addresses announced to Internet:                 1238454464
    Equivalent to 73 /8s, 209 /16s and 80 /24s
    Percentage of available address space announced:             33.4
    Percentage of allocated address space announced:             65.5
    Percentage of available address space allocated:             51.0

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

Prefixes being announced by APNIC Region ASes:                  16123
Prefixes being announced from the APNIC address blocks:         14631
APNIC Region origin ASes present in the Internet Routing Table:  1225
APNIC Region origin ASes announcing only one prefix:              432
APNIC Region transit ASes present in the Internet Routing Table:  200
Average APNIC Region AS path length visible:                      5.1
    Max APNIC Region AS path length visible:                       14
Number of APNIC addresses announced to Internet:             71027382
    Equivalent to 4 /8s, 59 /16s and 202 /24s
    Percentage of available APNIC address space announced:       69.8

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

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

Prefixes being announced by ARIN Region ASes:                   71093
Prefixes being announced from the ARIN address blocks:          48604
ARIN Region origin ASes present in the Internet Routing Table:   6428
ARIN Region origin ASes announcing only one prefix:              1891
ARIN Region transit ASes present in the Internet Routing Table:   672
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        14
Number of ARIN addresses announced to Internet:             181106981
    Equivalent to 10 /8s, 203 /16s and 121 /24s
    Percentage of available ARIN address space announced:        83.0

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
ARIN Address Blocks    63/8, 64/7, 66/8, 199/8, 200/8, 204/6, 208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                   16120
Prefixes being announced from the RIPE address blocks:          12783
RIPE Region origin ASes present in the Internet Routing Table:   2911
RIPE Region origin ASes announcing only one prefix:              1468
RIPE Region transit ASes present in the Internet Routing Table:   544
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        15
Number of RIPE addresses announced to Internet:              96664777
    Equivalent to 5 /8s, 194 /16s and 252 /24s
    Percentage of available RIPE address space announced:        82.3

RIPE AS Blocks         1877 - 1901, 2042, 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, 193/8, 194/7, 212/7 and 217/8

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

  ASN   No of nets  /19 equiv  Description
 1221     2000        684       Telstra
 2764      872        164       connect.com.au pty ltd
  703      377        204       UUNET Technologies, Inc.
 2907      363        884       SINET Japan
 4755      300        110       VSNL India
 4538      240       1022       China Education and Research 
 7539      218         97       Delegated to TWNIC for subseq
 4766      187        770       KORnet Powered BY Korea Telec
 4134      186        616       Data Communications Bureau
 7474      186         85       Optus Communications
 1237      163         71       System Engineering Research I
 9269      160         22       Hong Kong CTI
 7657      155         12       The Internet Group Limited
 4740      153         10       Ozemail
17561      150         60       Internet service provision to
 7545      149         10       TPG Internet Pty Ltd
 4786      128          7       NetConnect Communications Pty
 7617      124         46       One.Net Pty Ltd
 7586      123          9       Paradox Digital Pty. Ltd
 9797      122         10       Asia Online Australia

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

  ASN   No of nets  /19 equiv  Description
  702      467        662       UUNET Technologies, Inc.
 3301      390        337       TeliaNet Sweden
 1257      278        247       Swipnet AB
 1270      278        448       UUNET Germany
  680      206        913       Deutschef Forschurgsnetz
 3215      206        235       RAIN
  719      190        146       LANLINK
 5515      190        336       Sonera Finland
  786      184        959       JANET IP Service
 3320      159        710       Deutsche Telekom AG
  517      129        135       Xlink
 5400      125         33       Concert Internet Plus Europea
 3303      123        298       Swisscom
 2856      122        388       BTnet UK Regional network
 1290      116        206       PSINet UK Ltd.
 8708      115          5       Romania Data System
 1849      108        224       UUNET UK (formerly PIPEX)
 3352      108        241       Ibernet, Internet A
 1267       97        978       IUnet S.p.A
 1901       97         77       EUnet Austria

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

  ASN   No of nets  /19 equiv  Description
  701     2411       3625       UUNET Technologies, Inc.
  705     1390         62       UUNET Technologies, Inc.
 7018      965       3194       AT&T
    1      964       4497       BBN Planet
 7046      824        560       UUNET Technologies, Inc.
 1239      651       1638       Sprint ICM-Inria
 2914      605       1211       Verio, Inc.
 3561      554       1248       Cable & Wireless USA
  174      529       2759       PSINet Inc.
 3549      517        495       Global Crossing
 4293      480         52       Cable & Wireless USA
  209      449        675       Qwest
  690      414         49       Merit Network
 2548      398        514       Digital Express Group, Inc.
 3908      382        262       Supernet, Inc.
 8151      361        218       UniNet S.A. de C.V.
 4323      337        136       Time Warner Communications, I
 3967      335        224       Exodus Communication
 8013      335         54       PSINet Ltd. Canada
11371      318         49       Rhythms NetConnections

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

  ASN   No of nets  /19 equiv  Description
  701     2411       3625       UUNET Technologies, Inc.
 1221     2000        684       Telstra
  705     1390         62       UUNET Technologies, Inc.
 7018      965       3194       AT&T
    1      964       4497       BBN Planet
 2764      872        164       connect.com.au pty ltd
 7046      824        560       UUNET Technologies, Inc.
 1239      651       1638       Sprint ICM-Inria
 2914      605       1211       Verio, Inc.
 3561      554       1248       Cable & Wireless USA
  174      529       2759       PSINet Inc.
 3549      517        495       Global Crossing
 4293      480         52       Cable & Wireless USA
  702      467        662       UUNET Technologies, Inc.
  209      449        675       Qwest
  690      414         49       Merit Network
 2548      398        514       Digital Express Group, Inc.
 3301      390        337       TeliaNet Sweden
 3908      382        262       Supernet, Inc.
  703      377        204       UUNET Technologies, Inc.

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

Bad AS  Designation  Network              Transit AS  Description
65130   PRIVATE       65.28.144.0/20        7017       Continental Cablevis
 2027   UNALLOCATED   150.185.0.0/16       10530       Interpacket Group, I
 2027   UNALLOCATED   150.185.128.0/18      8143       Publicom Corp.
 2027   UNALLOCATED   150.186.0.0/16       10530       Interpacket Group, I
 2027   UNALLOCATED   150.187.0.0/16       10530       Interpacket Group, I
 2027   UNALLOCATED   150.188.0.0/16       10530       Interpacket Group, I
 2027   UNALLOCATED   150.189.0.0/16       10530       Interpacket Group, I
 1877   UNALLOCATED   192.108.196.0/24      1800       SPRINT
 1877   UNALLOCATED   192.108.209.0/24      1880       Stupi, house man's 
 1877   UNALLOCATED   192.108.210.0/24      1880       Stupi, house man's 
 1877   UNALLOCATED   192.108.214.0/24      1800       SPRINT
 5757   UNALLOCATED   192.239.13.0/24        701       UUNET Technologies, 
65132   PRIVATE       202.160.247.176/28    7473       SINGTEL-IX
65132   PRIVATE       202.160.247.208/28    7473       SINGTEL-IX
65132   PRIVATE       202.160.247.224/28    7473       SINGTEL-IX
65535   PRIVATE       203.24.169.0/24      17486       Swiftel Communicatio
65132   PRIVATE       203.126.77.0/24       7473       SINGTEL-IX
65500   PRIVATE       203.166.86.0/24      10084       Western Australian I
65333   PRIVATE       203.208.131.0/24      7473       SINGTEL-IX
 5555   UNALLOCATED   205.110.64.0/24        721       DLA Systems Automati
 5555   UNALLOCATED   205.110.68.0/22        721       DLA Systems Automati
 5555   UNALLOCATED   205.110.72.0/21        721       DLA Systems Automati
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 

Advertised IANA Reserved Addresses
----------------------------------

Network            Origin AS  Description
106.1.1.0/24          5705     Sirius Solutions, Inc.
106.1.2.0/24          5705     Sirius Solutions, Inc.
223.255.46.0/24       6853     GLOBAL-ONE-PORTUGAL
223.255.70.0/24       6853     GLOBAL-ONE-PORTUGAL

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

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:22       /9:4       /10:4       /11:10      /12:29      
/13:67      /14:205     /15:330     /16:6925    /17:1127    /18:2102    
/19:6576    /20:5032    /21:4440    /22:6736    /23:8682    /24:59899   
/25:264     /26:374     /27:155     /28:134     /29:90      /30:93      
/31:1       /32:58      

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

   9:3        12:354      13:10       15:1        17:1        24:708    
  26:1        32:12       38:7        44:3        47:2        53:2      
  55:1        57:12       61:28       62:133      63:1923     64:1456   
  65:751      66:246     106:2       128:31      129:115     130:20     
 131:25      132:9       133:1       134:161     135:8       136:16     
 137:116     138:246     139:52      140:141     141:174     142:56     
 143:76      144:132     145:9       146:134     147:134     148:153    
 149:134     150:27      151:176     152:838     153:33      154:13     
 155:76      156:39      157:108     158:61      159:80      160:18     
 161:56      162:61      163:135     164:113     165:127     166:175    
 167:134     168:81      169:32      170:210     171:2       192:5397   
 193:1907    194:2056    195:766     196:376     198:3676    199:3382   
 200:1914    202:2506    203:5143    204:3358    205:2241    206:2726   
 207:2830    208:2915    209:3269    210:735     211:191     212:809    
 213:393     214:8       215:11      216:2903    217:191     223:2      


End of report



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