Weekly Routing Table Report

Routing Table Analysis cscora at thyme.apnic.net
Fri Jul 26 06:05:06 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 26 Jul, 2002

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

BGP routing table entries examined:                            114301
    Prefixes after maximum aggregation:                         74045
    Unique aggregates announced to Internet:                    54685
Total ASes present in the Internet Routing Table:               13448
Origin-only ASes present in the Internet Routing Table:         11641
Origin ASes announcing only one prefix:                          5154
Transit ASes present in the Internet Routing Table:              1807
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:                                    23
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:    34
Number of addresses announced to Internet:                 1161595844
    Equivalent to 69 /8s, 60 /16s and 139 /24s
    Percentage of available address space announced:             31.3
    Percentage of allocated address space announced:             57.9
    Percentage of available address space allocated:             54.1
Total number of prefixes smaller than registry allocations:     46284

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

Prefixes being announced by APNIC Region ASes:                  18971
    Total APNIC prefixes after maximum aggregation:             11212
Prefixes being announced from the APNIC address blocks:         17475
    Unique aggregates announced from the APNIC address blocks:  10633
APNIC Region origin ASes present in the Internet Routing Table:  1578
APNIC Region origin ASes announcing only one prefix:              515
APNIC Region transit ASes present in the Internet Routing Table:  277
Average APNIC Region AS path length visible:                      5.3
    Max APNIC Region AS path length visible:                       13
Number of APNIC addresses announced to Internet:             89876320
    Equivalent to 5 /8s, 91 /16s and 103 /24s
    Percentage of available APNIC address space announced:       59.1

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:                   75906
    Total ARIN prefixes after maximum aggregation:              48221
Prefixes being announced from the ARIN address blocks:          53985
    Unique aggregates announced from the ARIN address blocks:   18013
ARIN Region origin ASes present in the Internet Routing Table:   7906
ARIN Region origin ASes announcing only one prefix:              2528
ARIN Region transit ASes present in the Internet Routing Table:   780
Average ARIN Region AS path length visible:                       5.3
    Max ARIN Region AS path length visible:                        17
Number of ARIN addresses announced to Internet:             190252864
    Equivalent to 11 /8s, 87 /16s and 7 /24s
    Percentage of available ARIN address space announced:        70.9

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:                   19417
    Total RIPE prefixes after maximum aggregation:              14612
Prefixes being announced from the RIPE address blocks:          16114
    Unique aggregates announced from the RIPE address blocks:   10485
RIPE Region origin ASes present in the Internet Routing Table:   3917
RIPE Region origin ASes announcing only one prefix:              2111
RIPE Region transit ASes present in the Internet Routing Table:   736
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        23
Number of RIPE addresses announced to Internet:             112921632
    Equivalent to 6 /8s, 187 /16s and 12 /24s
    Percentage of available RIPE address space announced:        74.8

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     1249       1191         897   Telstra Pty Ltd
 4538      541       1278          26   China Education and Research 
  703      413        360         326   UUNET
 2907      362       1832         340   SINET Japan
 2764      359        358         330   connect.com.au pty ltd
 7474      317        296         213   Optus Communications Pty Ltd
17557      296         20         103   Pakistan Telecom
 4134      293       2142         103   Data Communications Bureau
 4755      292        112          76   Videsh Sanchar Nigam Ltd. Aut
 9443      253         45          68   Primus Telecommunications
 4766      249       1506         156   Korea Internet Exchange for "
 4814      215         79          14   China Telecom (Group)
 9583      180         32           5   Satyam Infoway Ltd.,
17676      169       2626          32   XTAGE CORPORATION
 9768      143        384          73   Korea Telecom
 7657      129         22          88   The Internet Group Limited
 9800      125        191          18   CHINA UNICOM
 4780      122        186          39   Digital United Inc.
 7539      119        184         118   TANet2, sponsored by NSC, TAI
 4621      115         11          63   UNINET-TH

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      898       2441         756   UUNET - Commercial IP service
 3301      395        923         345   TeliaNet Sweden
 5515      319        783         180   Sonera Solution Autonomous Sy
 3215      277        640         175   France Telecom Transpac
 3352      275        531          31   Ibernet, Internet Access Netw
 3320      266       1964         205   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      182        306         127   LANLINK autonomous system
  786      177       1873         177   The JANET IP Service
 3303      141        548         140   Swisscom Ltd
 8708      140         23         136   Romania Data Systems S.A.
 2856      128        787         118   BTnet UK Regional network
12302      123         18          30   MobiFon S.A.
 3269      113        690          68   TELECOM ITALIA
 3246      112        317         107   Song Networks
 5511      110        192          88   France Telecom
 3233      107         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     1822       9181        1375   UUNET Technologies, Inc. 
 7018     1316       7402         943   AT&T 
 3908      951       1653         492   Supernet, Inc. 
 1239      814       3245         642   Sprint 
  852      756       1175         452   Telus Advanced Communications
    1      691       8067         442   GENUITY 
 4323      629        439         258   Time Warner Communications, I
 7843      596        358         241   Adelphia Corp. 
 7132      583        659         133   Southwestern Bell Internet Se
  209      536       2026         349   Qwest 
 7046      534        889         333   UUNET Technologies, Inc. 
  690      521         75         330   Merit Network 
 7066      485        203         254   Virginia Polytechnic Institut
 7029      463        165          56   Alltel Information Services, 
 3549      428        812         308   Global Crossing 
 2149      388        176         288   Performance Systems, Inc. 
15290      378        297         193   AT&T Canada IES 
 6197      377        611          37   BellSouth Network Solutions, 
 2914      367       2083         367   Verio, Inc. 
 6347      343        370          76   SAVVIS Communications Corpora

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

  ASN   No of nets  Net Savings Description
 4538       541         515      China Education and Research 
 3908       951         459      Supernet, Inc. 
 7132       583         450      Southwestern Bell Internet Se
 7029       463         407      Alltel Information Services, 
 7018      1316         373      AT&T 
 4323       629         371      Time Warner Communications, I
 7843       596         355      Adelphia Corp. 
 1221      1249         352      Telstra Pty Ltd
 6197       377         340      BellSouth Network Solutions, 
  852       756         304      Telus Advanced Communications
 4151       289         273      USDA 
 6347       343         267      SAVVIS Communications Corpora
 4355       324         255      EarthLink, Inc. 
    1       691         249      GENUITY 
 3352       275         244      Ibernet, Internet Access Netw
18566       236         232      Covad Communications 
 7066       485         231      Virginia Polytechnic Institut
 7303       278         219      Telecom Argentina Stet-France
 4755       292         216      Videsh Sanchar Nigam Ltd. Aut
 1580       216         202      ANOSCEUR 

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 - Commercial IP service
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 
192.172.0.0/19         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        /8:17       /9:6       /10:7       /11:12      /12:35      
/13:86      /14:235     /15:415     /16:7276    /17:1458    /18:2663    
/19:7703    /20:7470    /21:5253    /22:7976    /23:9740    /24:63292   
/25:199     /26:158     /27:85      /28:74      /29:48      /30:72      
/31:0       /32:21      

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

  ASN   No of nets  Total ann.   Description
  702      542           898      UUNET - Commercial IP service
 3908      529           951      Supernet, Inc. 
  701      502          1822      UUNET Technologies, Inc. 
  690      463           521      Merit Network 
 7843      401           596      Adelphia Corp. 
 7066      388           485      Virginia Polytechnic Institut
 7018      370          1316      AT&T 
 7029      366           463      Alltel Information Services, 
 6197      262           377      BellSouth Network Solutions, 
 6198      237           310      BellSouth Network Solutions, 
 3301      233           395      TeliaNet Sweden
18566      232           236      Covad Communications 
  209      213           536      Qwest 
 3215      210           277      France Telecom Transpac
 1239      203           814      Sprint 
 1580      203           216      ANOSCEUR 
 3352      200           275      Ibernet, Internet Access Netw
 7046      199           534      UUNET Technologies, Inc. 
 3320      198           266      Deutsche Telekom AG
    1      189           691      GENUITY 

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

   4:3        12:515      13:10       15:2        17:6        20:3      
  24:690      25:1        32:41       38:9        40:6        44:1      
  57:13       61:321      62:237      63:1894     64:1219     65:1409   
  66:997      67:91       68:67       80:251      81:40      128:65     
 129:131     130:22      131:53      132:11      133:2       134:124    
 135:8       136:244     137:95      138:151     139:72      140:169    
 141:121     142:79      143:45      144:143     145:17      146:189    
 147:139     148:242     149:80      150:39      151:66      152:269    
 153:34      154:14      155:115     156:70      157:124     158:70     
 159:134     160:19      161:74      162:214     163:91      164:263    
 165:132     166:219     167:178     168:295     169:59      170:242    
 171:3       192:5463    193:2376    194:2101    195:925     196:415    
 198:3624    199:3179    200:2610    202:3313    203:4783    204:3250   
 205:2209    206:2679    207:2525    208:2612    209:2721    210:595    
 211:238     212:902     213:662     214:9       215:20      216:2833   
 217:469     218:27     

End of report



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