Weekly Routing Table Report

Routing Table Analysis cscora at thyme.apnic.net
Fri Jul 5 06:05:52 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 05 Jul, 2002

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

BGP routing table entries examined:                            113313
    Prefixes after maximum aggregation:                         73541
    Unique aggregates announced to Internet:                    53461
Total ASes present in the Internet Routing Table:               13292
Origin-only ASes present in the Internet Routing Table:         11513
Origin ASes announcing only one prefix:                          5092
Transit ASes present in the Internet Routing Table:              1779
Transit-only ASes present in the Internet Routing Table:           48
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:              2
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    36
Number of addresses announced to Internet:                 1201977052
    Equivalent to 71 /8s, 164 /16s and 182 /24s
    Percentage of available address space announced:             32.4
    Percentage of allocated address space announced:             59.9
    Percentage of available address space allocated:             54.1
Total number of prefixes smaller than registry allocations:     45809

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

Prefixes being announced by APNIC Region ASes:                  18535
    Total APNIC prefixes after maximum aggregation:             11071
Prefixes being announced from the APNIC address blocks:         17032
    Unique aggregates announced from the APNIC address blocks:  10457
APNIC Region origin ASes present in the Internet Routing Table:  1553
APNIC Region origin ASes announcing only one prefix:              510
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:                       13
Number of APNIC addresses announced to Internet:             88121440
    Equivalent to 5 /8s, 64 /16s and 160 /24s
    Percentage of available APNIC address space announced:       58.0

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:                   75527
    Total ARIN prefixes after maximum aggregation:              47967
Prefixes being announced from the ARIN address blocks:          53813
    Unique aggregates announced from the ARIN address blocks:   17014
ARIN Region origin ASes present in the Internet Routing Table:   7823
ARIN Region origin ASes announcing only one prefix:              2505
ARIN Region transit ASes present in the Internet Routing Table:   763
Average ARIN Region AS path length visible:                       5.3
    Max ARIN Region AS path length visible:                        16
Number of ARIN addresses announced to Internet:             199664468
    Equivalent to 11 /8s, 230 /16s and 163 /24s
    Percentage of available ARIN address space announced:        74.4

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, 68/8, 199/8, 200/8, 204/6,
                       208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                   19250
    Total RIPE prefixes after maximum aggregation:              14503
Prefixes being announced from the RIPE address blocks:          15987
    Unique aggregates announced from the RIPE address blocks:   10429
RIPE Region origin ASes present in the Internet Routing Table:   3868
RIPE Region origin ASes announcing only one prefix:              2077
RIPE Region transit ASes present in the Internet Routing Table:   718
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        15
Number of RIPE addresses announced to Internet:             111972128
    Equivalent to 6 /8s, 172 /16s and 143 /24s
    Percentage of available RIPE address space announced:        74.2

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     1269       1223         906   Telstra Pty Ltd
 4538      448       1258          18   China Education and Research 
  703      401        358         319   UUNET Technologies, Inc. 
 2764      367        358         337   connect.com.au pty ltd
 2907      366       1864         341   SINET Japan
 7474      313        292         212   Optus Communications Pty Ltd
17557      308         21         110   Pakistan Telecom
 4755      303        120          82   Videsh Sanchar Nigam Ltd. Aut
 4134      291       2114         107   Data Communications Bureau
 9443      254         45          66   Primus Telecommunications
 4766      217       1506         155   Korea Internet Exchange for "
 4814      210         79          14   China Telecom (Group) - Beiji
 9583      174         32           5   Satyam Infoway Ltd.,
17676      154       2386          25   XTAGE CORPORATION
 7539      153        202         148   TANet2, sponsored by NSC, TAI
 9768      144        385          74   Korea Telecom
 7657      130         22          88   The Internet Group Limited
 9800      125        191          18   CHINA UNICOM
 4713      115       1009         106   NTT Communications Corporatio
 4621      111         11          61   UNINET-TH

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      950       2461         783   UUNET Technologies, Inc. 
 3301      396        924         346   TeliaNet Sweden
 3352      280        535          29   Ibernet, Internet Access Netw
 3215      266        628         166   France Telecom / &Equant
 3320      241       1947         193   Deutsche Telekom AG
  680      233       2149         230   DFN-IP service G-WiN
 5515      216        783         172   Sonera Finland Autonomous Sys
 1257      205        430         202   SWIPnet Swedish IP Network
 5400      205         83          94   Concert European Core Network
  719      189        306         128   LANLINK autonomous system
  786      178       1873         177   The JANET IP Service
 8708      140         23         137   Romania Data Systems S.A.
 3303      135        546         134   Swisscom Ltd
 2856      126        786         116   BTnet UK Regional network
12302      118          7          31   MobiFon S.A.
 3246      112        301         107   Song Networks / Clinet
 3269      111        690          68   TELECOM ITALIA
 5511      108        192          87   France Telecom
 3233      104         10           9   RNC - Romanian Natioanal R&D 
 2874      102         85          39   Global One Services AB

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1854       9256        1381   UUNET Technologies, Inc. 
 7018     1284       7406         933   AT&T 
 3908      920       1643         500   Supernet, Inc. 
 1239      824       3328         647   Sprint 
    1      693       8075         446   GENUITY 
  852      681       1173         447   Telus Advanced Communications
 4323      631        438         258   Time Warner Communications, I
 7843      616        358         234   Adelphia Corp. 
  209      611       2011         351   Qwest 
 7132      579        659         133   Southwestern Bell Internet Se
 7046      565        889         362   UUNET Technologies, Inc. 
  690      513         75         315   Merit Network 
 7066      477        202         252   Virginia Polytechnic Institut
 7029      475        167          58   Alltel Information Services, 
 2149      444        180         337   Performance Systems, Inc. 
 3549      441        839         317   Global Crossing 
 2914      407       2100         384   Verio, Inc. 
15290      381        297         196   AT&T Canada IES 
 6197      347        248         169   BellSouth Network Solutions, 
 6347      339        370          77   SAVVIS Communications Corpora

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

  ASN   No of nets  Net Savings Description
 7132       579         446      Southwestern Bell Internet Se
 4538       448         430      China Education and Research 
 3908       920         420      Supernet, Inc. 
 7029       475         417      Alltel Information Services, 
 7843       616         382      Adelphia Corp. 
 4323       631         373      Time Warner Communications, I
 1221      1269         363      Telstra Pty Ltd
 7018      1284         351      AT&T 
11371       292         286      Rhythms NetConnections 
 4151       289         273      USDA 
 6347       339         262      SAVVIS Communications Corpora
  209       611         260      Qwest 
 3352       280         251      Ibernet, Internet Access Netw
 4355       301         249      EarthLink, Inc. 
    1       693         247      GENUITY 
  852       681         234      Telus Advanced Communications
 7066       477         225      Virginia Polytechnic Institut
18566       228         224      Covad Communications 
 4755       303         221      Videsh Sanchar Nigam Ltd. Aut
 6198       324         219      BellSouth Network Solutions, 

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

Bad AS  Designation  Network              Transit AS  Description
65000   PRIVATE       145.8.176.0/24       12469       Infonet Netherlands 
 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 
192.5.154.0/24       16588     Spider Web Hosting Solutions 
192.26.98.0/24        1239     Sprint 
192.44.0.0/19          702     UUNET Technologies, Inc. 
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 Finland Autonomous Sys
192.83.32.0/19        5515     Sonera Finland Autonomous Sys
192.83.96.0/22        5515     Sonera Finland Autonomous Sys
192.83.100.0/24       5515     Sonera Finland Autonomous Sys
192.91.198.0/24       2568     CTS Network Services 
192.92.167.0/24        297     NASA Science Network 
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T 
192.135.248.0/23       109     Cisco Systems, Inc. 
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
192.139.62.0/24       6539     GT Group Telecom Services Cor
192.140.0.0/16        5511     France Telecom
192.152.213.0/24      1239     Sprint 
192.153.136.0/21       568     DISO-UNRRA 
192.156.0.0/19         568     DISO-UNRRA 
192.172.0.0/19         568     DISO-UNRRA 
192.195.253.0/24       237     Merit Network 
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        /8:21       /9:6       /10:7       /11:12      /12:36      
/13:87      /14:233     /15:418     /16:7226    /17:1449    /18:2647    
/19:7662    /20:7330    /21:5138    /22:7922    /23:9614    /24:62853   
/25:198     /26:162     /27:74      /28:72      /29:51      /30:74      
/31:0       /32:21      

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

  ASN   No of nets  Total ann.   Description
  702      588           950      UUNET Technologies, Inc. 
  701      509          1854      UUNET Technologies, Inc. 
 3908      509           920      Supernet, Inc. 
  690      454           513      Merit Network 
 7843      424           616      Adelphia Corp. 
 7066      382           477      Virginia Polytechnic Institut
 7029      373           475      Alltel Information Services, 
 7018      342          1284      AT&T 
  209      274           611      Qwest 
 6197      249           347      BellSouth Network Solutions, 
11371      245           292      Rhythms NetConnections 
 6198      237           324      BellSouth Network Solutions, 
 3301      234           396      TeliaNet Sweden
18566      224           228      Covad Communications 
 7046      218           565      UUNET Technologies, Inc. 
 1239      209           824      Sprint 
 3352      204           280      Ibernet, Internet Access Netw
 1580      203           233      HQ, 5th Signal Command 
 3215      199           266      France Telecom / &Equant
    1      193           693      GENUITY 

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

   4:3         9:1        12:501      13:10       15:2        17:6      
  20:2        24:794      25:1        32:41       38:9        40:6      
  44:1        57:13       61:269      62:209      63:1885     64:1255   
  65:1419     66:994      67:89       68:45       80:253      81:32     
 128:62      129:135     130:22      131:48      132:11      133:2      
 134:123     135:8       136:243     137:92      138:149     139:69     
 140:175     141:122     142:81      143:40      144:153     145:14     
 146:182     147:136     148:222     149:89      150:40      151:67     
 152:261     153:34      154:14      155:106     156:77      157:128    
 158:70      159:179     160:18      161:68      162:213     163:99     
 164:265     165:133     166:220     167:170     168:126     169:61     
 170:250     171:3       192:5444    193:2360    194:2091    195:921    
 196:395     198:3625    199:3185    200:2581    202:3261    203:4657   
 204:3255    205:2183    206:2670    207:2547    208:2650    209:2649   
 210:592     211:226     212:913     213:655     214:9       215:19     
 216:2852    217:465     218:28     

End of report



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