Weekly Routing Table Report

Routing Table Analysis cscora at thyme.apnic.net
Fri Jul 12 06:05:10 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 12 Jul, 2002

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

BGP routing table entries examined:                            113808
    Prefixes after maximum aggregation:                         73632
    Unique aggregates announced to Internet:                    53854
Total ASes present in the Internet Routing Table:               13333
Origin-only ASes present in the Internet Routing Table:         11543
Origin ASes announcing only one prefix:                          5110
Transit ASes present in the Internet Routing Table:              1790
Transit-only ASes present in the Internet Routing Table:           50
Average AS path length visible in the Internet Routing Table:     5.4
    Max AS path length visible:                                    22
Illegal AS announcements present in the Routing Table:              8
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    35
Number of addresses announced to Internet:                 1180975672
    Equivalent to 70 /8s, 100 /16s and 66 /24s
    Percentage of available address space announced:             31.9
    Percentage of allocated address space announced:             58.9
    Percentage of available address space allocated:             54.1
Total number of prefixes smaller than registry allocations:     46022

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

Prefixes being announced by APNIC Region ASes:                  18655
    Total APNIC prefixes after maximum aggregation:             11077
Prefixes being announced from the APNIC address blocks:         17207
    Unique aggregates announced from the APNIC address blocks:  10502
APNIC Region origin ASes present in the Internet Routing Table:  1558
APNIC Region origin ASes announcing only one prefix:              506
APNIC Region transit ASes present in the Internet Routing Table:  275
Average APNIC Region AS path length visible:                      5.2
    Max APNIC Region AS path length visible:                       13
Number of APNIC addresses announced to Internet:             88702624
    Equivalent to 5 /8s, 73 /16s and 126 /24s
    Percentage of available APNIC address space announced:       58.3

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:                   75831
    Total ARIN prefixes after maximum aggregation:              48036
Prefixes being announced from the ARIN address blocks:          53877
    Unique aggregates announced from the ARIN address blocks:   17995
ARIN Region origin ASes present in the Internet Routing Table:   7845
ARIN Region origin ASes announcing only one prefix:              2517
ARIN Region transit ASes present in the Internet Routing Table:   773
Average ARIN Region AS path length visible:                       5.3
    Max ARIN Region AS path length visible:                        22
Number of ARIN addresses announced to Internet:             189355856
    Equivalent to 11 /8s, 73 /16s and 87 /24s
    Percentage of available ARIN address space announced:        70.5

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:                   19315
    Total RIPE prefixes after maximum aggregation:              14519
Prefixes being announced from the RIPE address blocks:          16050
    Unique aggregates announced from the RIPE address blocks:    9821
RIPE Region origin ASes present in the Internet Routing Table:   3881
RIPE Region origin ASes announcing only one prefix:              2087
RIPE Region transit ASes present in the Internet Routing Table:   719
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        16
Number of RIPE addresses announced to Internet:             116950816
    Equivalent to 6 /8s, 248 /16s and 135 /24s
    Percentage of available RIPE address space announced:        77.5

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, 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     1257       1207         899   Telstra Pty Ltd
 4538      466       1258          18   China Education and Research 
  703      408        358         323   UUNET Technologies, Inc. 
 2907      366       1865         341   SINET Japan
 2764      361        358         332   connect.com.au pty ltd
 7474      311        291         207   Optus Communications Pty Ltd
17557      307         20         109   Pakistan Telecom
 4755      301        116          82   Videsh Sanchar Nigam Ltd. Aut
 4134      289       2112         106   Data Communications Bureau
 9443      253         45          67   Primus Telecommunications
 4766      248       1506         155   Korea Internet Exchange for "
 4814      212         79          14   China Telecom (Group) - Beiji
 9583      176         32           5   Satyam Infoway Ltd.,
17676      160       2482          27   XTAGE CORPORATION
 9768      143        384          73   Korea Telecom
 7657      129         22          87   The Internet Group Limited
 9800      125        191          18   CHINA UNICOM
 4780      123        186          39   Digital United Inc.
 4713      115       1009         106   NTT Communications Corporatio
 4739      111         56         102   Commerical Internet eXchange 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      940       2443         778   UUNET Technologies, Inc. 
 3301      396        924         346   TeliaNet Sweden
 3352      277        535          29   Ibernet, Internet Access Netw
 3215      266        628         166   France Telecom / &Equant
 3320      254       1946         193   Deutsche Telekom AG
 5515      245        783         172   Sonera Finland Autonomous Sys
  680      233       2149         230   DFN-IP service G-WiN
 1257      206        430         203   SWIPnet Swedish IP Network
 5400      205         83          94   Concert European Core Network
  719      189        306         128   LANLINK autonomous system
  786      177       1873         177   The JANET IP Service
 8708      139         23         136   Romania Data Systems S.A.
 3303      137        547         136   Swisscom Ltd
 2856      128        787         118   BTnet UK Regional network
12302      122         17          34   MobiFon S.A.
 3269      113        690          68   TELECOM ITALIA
 3246      112        317         107   Song Networks / Clinet
 5511      109        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     1852       9240        1378   UUNET Technologies, Inc. 
 7018     1294       7390         935   AT&T 
 3908      923       1643         501   Supernet, Inc. 
 1239      845       3355         660   Sprint 
  852      757       1175         451   Telus Advanced Communications
    1      698       8075         447   GENUITY 
 7843      643        360         238   Adelphia Corp. 
 4323      626        438         257   Time Warner Communications, I
 7132      579        659         133   Southwestern Bell Internet Se
 7046      558        885         357   UUNET Technologies, Inc. 
  209      535       2010         347   Qwest 
  690      515         74         327   Merit Network 
 7066      482        203         252   Virginia Polytechnic Institut
 7029      463        165          56   Alltel Information Services, 
 3549      440        839         316   Global Crossing 
 2149      438        180         332   Performance Systems, Inc. 
 2914      409       2100         386   Verio, Inc. 
15290      379        297         194   AT&T Canada IES 
 6197      370        547          36   BellSouth Network Solutions, 
 6347      347        370          77   SAVVIS Communications Corpora

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

  ASN   No of nets  Net Savings Description
 4538       466         448      China Education and Research 
 7132       579         446      Southwestern Bell Internet Se
 3908       923         422      Supernet, Inc. 
 7029       463         407      Alltel Information Services, 
 7843       643         405      Adelphia Corp. 
 4323       626         369      Time Warner Communications, I
 7018      1294         359      AT&T 
 1221      1257         358      Telstra Pty Ltd
 6197       370         334      BellSouth Network Solutions, 
  852       757         306      Telus Advanced Communications
11371       292         286      Rhythms NetConnections 
 4151       287         271      USDA 
 6347       347         270      SAVVIS Communications Corpora
 4355       308         256      EarthLink, Inc. 
    1       698         251      GENUITY 
 3352       277         248      Ibernet, Internet Access Netw
 7066       482         230      Virginia Polytechnic Institut
18566       229         225      Covad Communications 
 4755       301         219      Videsh Sanchar Nigam Ltd. Aut
 7303       273         211      Telecom Argentina Stet-France

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

Bad AS  Designation  Network              Transit AS  Description
55000   RESERVED      81.5.64.0/20          5467       MIPT-NET
65003   PRIVATE       202.92.84.0/24        9837       Powertel Ltd
65003   PRIVATE       202.92.84.0/22        9837       Powertel Ltd
65003   PRIVATE       202.92.85.0/24        9837       Powertel Ltd
65003   PRIVATE       202.92.119.0/24       9837       Powertel Ltd
65003   PRIVATE       203.56.32.0/24        9837       Powertel Ltd
65003   PRIVATE       203.56.33.0/24        9837       Powertel Ltd
 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 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        /8:19       /9:6       /10:7       /11:12      /12:36      
/13:87      /14:233     /15:416     /16:7249    /17:1451    /18:2650    
/19:7678    /20:7363    /21:5171    /22:7936    /23:9664    /24:63168   
/25:204     /26:168     /27:86      /28:68      /29:45      /30:74      
/31:0       /32:17      

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

  ASN   No of nets  Total ann.   Description
  702      583           940      UUNET Technologies, Inc. 
 3908      510           923      Supernet, Inc. 
  701      507          1852      UUNET Technologies, Inc. 
  690      457           515      Merit Network 
 7843      449           643      Adelphia Corp. 
 7066      387           482      Virginia Polytechnic Institut
 7029      366           463      Alltel Information Services, 
 7018      350          1294      AT&T 
 6197      256           370      BellSouth Network Solutions, 
11371      245           292      Rhythms NetConnections 
 6198      238           310      BellSouth Network Solutions, 
 3301      234           396      TeliaNet Sweden
18566      225           229      Covad Communications 
 1239      217           845      Sprint 
 7046      215           558      UUNET Technologies, Inc. 
  209      211           535      Qwest 
 3352      201           277      Ibernet, Internet Access Netw
 1580      200           213      HQ, 5th Signal Command 
 3215      199           266      France Telecom / &Equant
    1      191           698      GENUITY 

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

   4:3         9:1        12:504      13:10       15:2        17:6      
  20:3        24:798      25:1        32:41       38:9        40:6      
  44:1        57:13       61:277      62:221      63:1883     64:1258   
  65:1378     66:979      67:89       68:63       80:248      81:33     
 128:63      129:133     130:22      131:53      132:11      133:2      
 134:126     135:8       136:243     137:94      138:150     139:69     
 140:143     141:123     142:78      143:39      144:151     145:14     
 146:187     147:138     148:241     149:84      150:41      151:67     
 152:264     153:34      154:14      155:107     156:77      157:127    
 158:69      159:135     160:18      161:70      162:214     163:94     
 164:259     165:133     166:222     167:172     168:292     169:60     
 170:252     171:3       192:5456    193:2367    194:2093    195:905    
 196:410     198:3643    199:3192    200:2584    202:3313    203:4691   
 204:3281    205:2182    206:2686    207:2539    208:2647    209:2670   
 210:600     211:230     212:913     213:663     214:9       215:19     
 216:2854    217:471     218:27     

End of report



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