Weekly Routing Table Report

Routing Table Analysis cscora at thyme.apnic.net
Fri Aug 2 06:04:52 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 02 Aug, 2002

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

BGP routing table entries examined:                            114554
    Prefixes after maximum aggregation:                         74000
    Unique aggregates announced to Internet:                    54612
Total ASes present in the Internet Routing Table:               13482
Origin-only ASes present in the Internet Routing Table:         11667
Origin ASes announcing only one prefix:                          5179
Transit ASes present in the Internet Routing Table:              1815
Transit-only ASes present in the Internet Routing Table:           51
Average AS path length visible in the Internet Routing Table:     5.4
    Max AS path length visible:                                    23
Illegal AS announcements present in the Routing Table:              1
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:                 1190731541
    Equivalent to 70 /8s, 249 /16s and 31 /24s
    Percentage of available address space announced:             32.1
    Percentage of allocated address space announced:             59.4
    Percentage of available address space allocated:             54.1
Total number of prefixes smaller than registry allocations:     46631

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

Prefixes being announced by APNIC Region ASes:                  18897
    Total APNIC prefixes after maximum aggregation:             11224
Prefixes being announced from the APNIC address blocks:         17403
    Unique aggregates announced from the APNIC address blocks:  10608
APNIC Region origin ASes present in the Internet Routing Table:  1581
APNIC Region origin ASes announcing only one prefix:              517
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:                       12
Number of APNIC addresses announced to Internet:             90250720
    Equivalent to 5 /8s, 97 /16s and 29 /24s
    Percentage of available APNIC address space announced:       59.4

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:                   76161
    Total ARIN prefixes after maximum aggregation:              48172
Prefixes being announced from the ARIN address blocks:          53959
    Unique aggregates announced from the ARIN address blocks:   17941
ARIN Region origin ASes present in the Internet Routing Table:   7934
ARIN Region origin ASes announcing only one prefix:              2550
ARIN Region transit ASes present in the Internet Routing Table:   783
Average ARIN Region AS path length visible:                       5.3
    Max ARIN Region AS path length visible:                        17
Number of ARIN addresses announced to Internet:             193938192
    Equivalent to 11 /8s, 143 /16s and 67 /24s
    Percentage of available ARIN address space announced:        72.2

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
                       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:                   19496
    Total RIPE prefixes after maximum aggregation:              14604
Prefixes being announced from the RIPE address blocks:          16178
    Unique aggregates announced from the RIPE address blocks:   10532
RIPE Region origin ASes present in the Internet Routing Table:   3916
RIPE Region origin ASes announcing only one prefix:              2112
RIPE Region transit ASes present in the Internet Routing Table:   740
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        23
Number of RIPE addresses announced to Internet:             112763936
    Equivalent to 6 /8s, 184 /16s and 164 /24s
    Percentage of available RIPE address space announced:        74.7

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     1252       1191         896   Telstra Pty Ltd
 4538      562       1279          27   China Education and Research 
  703      414        376         326   UUNET
 2907      364       1848         342   SINET Japan
 2764      359        358         330   connect.com.au pty ltd
 7474      320        296         213   Optus Communications Pty Ltd
17557      297         20          95   Pakistan Telecom
 4134      293       2158         103   Data Communications Bureau
 4755      291        112          77   Videsh Sanchar Nigam Ltd. Aut
 4766      249       1506         156   Korea Internet Exchange for "
 4814      220         79          14   China Telecom (Group)
 9583      182         32           5   Satyam Infoway Ltd.,
17676      172       2674          32   XTAGE CORPORATION
 9443      170         45          68   Primus Telecommunications
 7539      147        189         142   TANet2, sponsored by NSC, TAI
 9768      144        385          74   Korea Telecom
 7657      133         22          91   The Internet Group Limited
 9800      125        191          18   CHINA UNICOM
 4621      116         11          63   UNINET-TH
 4713      115       1009         106   NTT Communications Corporatio

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      896       2423         755   UUNET - Commercial IP service
 3301      396        923         346   TeliaNet Sweden
 5515      320        783         180   Sonera Solution Autonomous Sy
 3215      289        641         178   France Telecom Transpac
 3352      275        531          31   Ibernet, Internet Access Netw
 3320      269       1965         208   Deutsche Telekom AG
  680      235       2150         232   DFN-IP service G-WiN
 5400      209         85          97   BT Ignite European Backbone
 1257      208        446         203   SWIPnet Swedish IP Network
  719      183        306         128   LANLINK autonomous system
  786      177       1873         177   The JANET IP Service
 8708      143         23         139   Romania Data Systems S.A.
 3303      141        548         140   Swisscom Ltd
 2856      128        787         118   BTnet UK Regional network
12302      124         18          31   MobiFon S.A.
 3269      113        690          68   TELECOM ITALIA
 3246      112        317         107   Song Networks
 5511      110        192          88   France Telecom
 3233      105         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     1812       9242        1369   UUNET Technologies, Inc. 
 7018     1317       7402         941   AT&T 
 3908     1030       1656         490   Supernet, Inc. 
 1239      830       3249         650   Sprint 
  852      754       1175         451   Telus Advanced Communications
    1      695       8050         445   GENUITY 
 4323      638        442         262   Time Warner Communications, I
 7843      613        364         246   Adelphia Corp. 
 7132      588        663         135   Southwestern Bell Internet Se
  209      542       2025         343   Qwest 
 7046      524        887         325   UUNET Technologies, Inc. 
  690      520         75         331   Merit Network 
 7066      486        203         254   Virginia Polytechnic Institut
 7029      452        164          54   Alltel Information Services, 
 3549      448        821         316   Global Crossing 
 6197      378        599          48   BellSouth Network Solutions, 
15290      376        297         192   AT&T Canada IES 
 2149      368        174         271   Performance Systems, Inc. 
 2914      363       2081         363   Verio, Inc. 
 6347      344        370          75   SAVVIS Communications Corpora

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

  ASN   No of nets  Net Savings Description
 3908      1030         540      Supernet, Inc. 
 4538       562         535      China Education and Research 
 7132       588         453      Southwestern Bell Internet Se
 7029       452         398      Alltel Information Services, 
 7018      1317         376      AT&T 
 4323       638         376      Time Warner Communications, I
 7843       613         367      Adelphia Corp. 
 1221      1252         356      Telstra Pty Ltd
 6197       378         330      BellSouth Network Solutions, 
  852       754         303      Telus Advanced Communications
 1657       279         277      University of Louisville 
 4151       289         273      USDA 
 6347       344         269      SAVVIS Communications Corpora
 4355       326         256      EarthLink, Inc. 
    1       695         250      GENUITY 
 3352       275         244      Ibernet, Internet Access Netw
18566       237         233      Covad Communications 
 7066       486         232      Virginia Polytechnic Institut
 4755       291         214      Videsh Sanchar Nigam Ltd. Aut
 7303       271         211      Telecom Argentina Stet-France

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

Bad AS  Designation  Network              Transit AS  Description
 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 
192.44.0.0/19          702     UUNET - Commercial IP service
192.58.92.0/24       19548     Adelphia Business Solutions 
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 Solution Autonomous Sy
192.83.32.0/19        5515     Sonera Solution Autonomous Sy
192.83.96.0/22        5515     Sonera Solution Autonomous Sy
192.83.100.0/24       5515     Sonera Solution Autonomous Sy
192.91.198.0/24       2568     CTS Network Services 
192.92.167.0/24        297     NASA Science Network 
192.108.46.0/23        680     DFN-IP service G-WiN
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T 
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
192.153.136.0/21       568     DISO-UNRRA 
192.156.0.0/19         568     DISO-UNRRA 
192.156.164.0/24     19548     Adelphia Business Solutions 
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        /8:19       /9:7       /10:7       /11:12      /12:36      
/13:86      /14:232     /15:415     /16:7285    /17:1472    /18:2665    
/19:7710    /20:7498    /21:5282    /22:8005    /23:9672    /24:63338   
/25:198     /26:177     /27:98      /28:88      /29:67      /30:113     
/31:0       /32:72      

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

  ASN   No of nets  Total ann.   Description
 3908      606          1030      Supernet, Inc. 
  702      540           896      UUNET - Commercial IP service
  701      494          1812      UUNET Technologies, Inc. 
  690      466           520      Merit Network 
 7843      414           613      Adelphia Corp. 
 7066      389           486      Virginia Polytechnic Institut
 7018      374          1317      AT&T 
 7029      357           452      Alltel Information Services, 
 1657      278           279      University of Louisville 
 6197      264           378      BellSouth Network Solutions, 
 6198      243           316      BellSouth Network Solutions, 
 3301      234           396      TeliaNet Sweden
18566      233           237      Covad Communications 
 3215      221           289      France Telecom Transpac
  209      220           542      Qwest 
 1239      213           830      Sprint 
 1580      201           214      ANOSCEUR 
 3320      201           269      Deutsche Telekom AG
 3352      201           275      Ibernet, Internet Access Netw
    1      195           695      GENUITY 

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

   4:3        12:525      13:10       15:2        17:6        20:3      
  24:699      25:1        32:41       38:9        40:6        44:1      
  57:13       61:326      62:236      63:1866     64:1227     65:1418   
  66:971      67:95       68:74       80:255      81:37      128:64     
 129:132     130:22      131:55      132:11      133:2       134:122    
 135:9       136:344     137:95      138:151     139:72      140:175    
 141:43      142:70      143:50      144:144     145:17      146:189    
 147:142     148:243     149:79      150:40      151:66      152:271    
 153:36      154:12      155:115     156:70      157:128     158:70     
 159:134     160:19      161:75      162:214     163:86      164:264    
 165:132     166:218     167:259     168:293     169:60      170:232    
 171:3       192:5467    193:2370    194:2114    195:909     196:414    
 198:3628    199:3155    200:2647    202:3308    203:4747    204:3256   
 205:2180    206:2652    207:2511    208:2611    209:2685    210:591    
 211:240     212:893     213:726     214:9       215:20      216:2847   
 217:475     218:31     

End of report



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