Weekly Routing Table Report

Routing Table Analysis cscora at apnic.net
Fri Oct 14 18:07:05 UTC 2005


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

If you have any comments please contact Philip Smith <pfs at cisco.com>.

Routing Table Report   04:00 +10GMT Sat 15 Oct, 2005

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

BGP routing table entries examined:                              171970
    Prefixes after maximum aggregation:                           97912
    Unique aggregates announced to Internet:                      83108
Total ASes present in the Internet Routing Table:                 20686
Origin-only ASes present in the Internet Routing Table:           17984
Origin ASes announcing only one prefix:                            8523
Transit ASes present in the Internet Routing Table:                2702
Transit-only ASes present in the Internet Routing Table:             76
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      25
Prefixes from unregistered ASNs in the Routing Table:                24
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             12
Number of addresses announced to Internet:                   1432117312
    Equivalent to 85 /8s, 92 /16s and 96 /24s
    Percentage of available address space announced:               38.6
    Percentage of allocated address space announced:               58.2
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       82011

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

Prefixes being announced by APNIC Region ASes:                    35743
    Total APNIC prefixes after maximum aggregation:               15711
Prefixes being announced from the APNIC address blocks:           33520
    Unique aggregates announced from the APNIC address blocks:    16652
APNIC Region origin ASes present in the Internet Routing Table:    2386
APNIC Region origin ASes announcing only one prefix:                695
APNIC Region transit ASes present in the Internet Routing Table:    361
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              202736768
    Equivalent to 12 /8s, 21 /16s and 132 /24s
    Percentage of available APNIC address space announced:         75.2

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911
APNIC Address Blocks   58/7, 60/7, 124/7, 126/8, 202/7, 210/7, 218/7,
                       220/7 and 222/8

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

Prefixes being announced by ARIN Region ASes:                     91412
    Total ARIN prefixes after maximum aggregation:                55469
Prefixes being announced from the ARIN address blocks:            71439
    Unique aggregates announced from the ARIN address blocks:     26392
ARIN Region origin ASes present in the Internet Routing Table:    10254
ARIN Region origin ASes announcing only one prefix:                3778
ARIN Region transit ASes present in the Internet Routing Table:     957
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          17
Number of ARIN addresses announced to Internet:               272029184
    Equivalent to 16 /8s, 54 /16s and 214 /24s
    Percentage of available ARIN address space announced:          67.6

ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  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, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863
ARIN Address Blocks    24/8, 63/8, 64/6, 68/7, 70/6, 74/7, 76/8,
                       198/7, 204/6, 208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                     33355
    Total RIPE prefixes after maximum aggregation:                22680
Prefixes being announced from the RIPE address blocks:            30377
    Unique aggregates announced from the RIPE address blocks:     20399
RIPE Region origin ASes present in the Internet Routing Table:     7198
RIPE Region origin ASes announcing only one prefix:                3802
RIPE Region transit ASes present in the Internet Routing Table:    1196
Average RIPE Region AS path length visible:                         5.0
    Max RIPE Region AS path length visible:                          19
Number of RIPE addresses announced to Internet:               219976960
    Equivalent to 13 /8s, 28 /16s and 149 /24s
    Percentage of available RIPE address space announced:          65.6

RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
RIPE Address Blocks    62/8, 80/5, 88/6, 188/8, 193/8, 194/7, 212/7
                       and 217/8

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                    9671
    Total LACNIC prefixes after maximum aggregation:               3231
Prefixes being announced from the LACNIC address blocks:           8001
    Unique aggregates announced from the LACNIC address blocks:    4713
LACNIC Region origin ASes present in the Internet Routing Table:    642
LACNIC Region origin ASes announcing only one prefix:               204
LACNIC Region transit ASes present in the Internet Routing Table:   125
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC addresses announced to Internet:              22300160
    Equivalent to 1 /8s, 84 /16s and 70 /24s
    Percentage of available LACNIC address space announced:        33.2

LACNIC AS Blocks       26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks  189/8, 190/8, 200/7

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                   1761
    Total AfriNIC prefixes after maximum aggregation:               821
Prefixes being announced from the AfriNIC address blocks:          1071
    Unique aggregates announced from the AfriNIC address blocks:    796
AfriNIC Region origin ASes present in the Internet Routing Table:   141
AfriNIC Region origin ASes announcing only one prefix:               44
AfriNIC Region transit ASes present in the Internet Routing Table:   18
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2839296
    Equivalent to 0 /8s, 43 /16s and 83 /24s
    Percentage of available AfriNIC address space announced:        8.5

AfriNIC AS Blocks      36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4134     1005       6236         210   CHINANET-BACKBONE
 9583      806         77          12   Sify Limited
 1221      750       1326         513   Telstra Pty Ltd
 4755      720        259          67   Videsh Sanchar Nigam Ltd. Aut
 4766      619       3927         291   Korea Telecom (KIX)
 7545      514        108          72   TPG Internet Pty Ltd
17676      470       6819         100   Softbank BB Corp.
 9443      392         87          78   Primus Telecommunications
 9498      381        211          57   BHARTI BT INTERNET LTD.
 2907      337       1763         314   SINET Japan
17488      336         20           9   Hathway IP Over Cable Interne
 9929      332        224          46   China Netcom Corp.
 7474      330        258         227   SingTel Optus Pty Ltd
17557      330         39         162   Pakistan Telecom
 4802      325         71         155   Wantree Development
18302      291        109         170   SK Global co., Ltd
 9837      275         79         176   Powertel Ltd
17974      271         65          14   PT TELEKOMUNIKASI INDONESIA
18101      263         68          18   Reliance Infocom Ltd Internet
 1659      260        956          35   Tiawan Academic Network (TANe

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1527       6365         997   AT&T WorldNet Services
 4323     1191        705         231   Time Warner Telecom
  721     1070      21938         308   DLA Systems Automation Center
  174     1060       5848         994   Cogent Communications
  701     1003       8121         839   UUNET Technologies, Inc. 
 6197      947        399         490   BellSouth Network Solutions, 
 2386      933        514         693   AT&T Data Communications Serv
18566      860        240           7   Covad Communications 
 1239      857       2852         602   Sprint 
  209      639       3572         505   Qwest 
20115      628        512         332   Charter Communications 
 3602      561        131         109   Sprint Canada, Inc. 
 3561      546       2410         419   Savvis
22773      539       1348          27   Cox Communications, Inc.
 3356      535      10639         411   Level 3 Communications, LLC 
 5668      486        147          24   CenturyTel Internet Holdings,
 6198      479        448         223   BellSouth Network Solutions, 
19262      479       1432         121   Verizon Global Networks 
 7132      468       5059         399   SBC Internet Services
  852      436       1092         382   Telus Advanced Communications

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      605       1976         478   UUNET - Commercial IP service
 3301      303       1081         289   TeliaNet Sweden
 3320      286       3231         241   Deutsche Telekom AG
 8220      269        475         264   COLT Telecommunications
  680      243       2040         239   DFN-IP service G-WiN
 8708      240        274         225   Romania Data Systems S.A.
 3246      226        474         219   Song Networks
 1257      194        712         172   SWIPnet Swedish IP Network
 6746      193         50         167   Dynamic Network Technologies,
 5515      181        777         127   Sonera Solution Autonomous Sy
 3269      178       1638          70   TELECOM ITALIA
  786      174       1795         174   The JANET IP Service
 5400      170        289         142   BT Ignite European Backbone
 8866      159         37           9   Bulgarian Telecommunication C
 6830      158        669          33   UPC Distribution Services
 3300      157        185          91   AUCS Communications Services 
25186      152        227         107   France Telecom Transpac's Tra
 3215      142       1229          81   France Telecom Transpac
 1273      139        177          97   Cable & Wireless Deutschland 
24863      139         37           6   LINKdotNET AS number

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      403        650         171   UniNet S.A. de C.V. 
16814      297         18           7   NSS, S.A. 
11172      279         86          64   Servicios Alestra S.A de C.V 
11664      195         22          13   Keytech SA 
19632      195         14           5   Metropolis Intercom S.A. 
 6147      191        118          21   Telefonica Del Peru 
22047      169        128           7   VTR PUNTO NET S.A. 
14117      155         10           5   Telefonica del Sur S.A. 
 7303      146         69          17   Telecom Argentina Stet-France
11556      132         64           2   Cable-Wireless Panama 
19169      122          8          26   Telconet 
 6505      121         89          85   Global One Communicaoes Ltda 
10481      121         48           8   Prima S.A. 
13999      119         52           9   Mega Cable S.A. de C.V. 
 6503      113        148          73   AVANTEL, S.A. 
18822      112          7          13   TELEFONICA MANQUEHUE 
21826      107         14          18   INTERCABLE 
 5639      105         12           9   Telecommunications Services o
11311       99          8          10   Sinectis S.A. 
23216       88         23          12   RAMtelecom Telecomunicaciones

AfriNIC Region per AS prefix count summary
------------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      268        708         226   The Internet Solution 
 5536      123          8          12   Internet Egypt Network
 8452      116         44           7   TEDATA
 2018       95        295          86   Tertiary Education Network 
15475       82         84           4   Nile Online
 2905       78        211          71   The Internetworking Company o
 6713       71         71          10   Itissalat Al-MAGHRIB
20928       61         16           2   Noor Advanced Technologies AS
24835       58         34           7   RAYA Telecom - Egypt
 5713       38        149          33   Telkom SA Ltd 
12455       35          6           3   Jambonet Autonomous system
15706       31          8           3   Sudatel Internet Exchange Aut
33774       29          3          19   AS Number for Telecom Algeria
 8524       24          1           4   AUCEGYPT Autonomous System
16637       23         10          20   Johnnic e-Ventures 
10798       22          1          13   Standard Bank of South Africa
21280       21          4           4   Swift Global Kenya Ltd.Is an 
23889       19          5           9   MAURITIUS TELECOM
15804       18          2           1   AS of The Way Out Internet So
12258       17          3          11   Vodacom Internet Company 

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

  ASN   No of nets  Net Savings Description
 4323      1191         960      Time Warner Telecom
18566       860         853      Covad Communications 
 4134      1005         795      CHINANET-BACKBONE
 9583       806         794      Sify Limited
  721      1070         762      DLA Systems Automation Center
 4755       720         653      Videsh Sanchar Nigam Ltd. Aut
22773       539         512      Cox Communications, Inc.
 5668       486         462      CenturyTel Internet Holdings,
 6197       947         457      BellSouth Network Solutions, 
 3602       561         452      Sprint Canada, Inc. 
 7545       514         442      TPG Internet Pty Ltd
17676       470         370      Softbank BB Corp.
19262       479         358      Verizon Global Networks 
 6467       403         355      E.Spire Communications, Inc. 
11492       346         335      Cable One 
 4766       619         328      Korea Telecom (KIX)
17488       336         327      Hathway IP Over Cable Interne
 9498       381         324      BHARTI BT INTERNET LTD.
15270       342         317      PaeTec.net -a division of Pae
 9443       392         314      Primus Telecommunications

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

Bad AS  Designation  Network              Transit AS  Description
65003   PRIVATE       57.250.244.0/24      13879       SITA-EQUANT 
64900   PRIVATE       64.116.137.0/24      17399       Comsat Venezuela, CO
65506   PRIVATE       64.151.117.0/24      26228       ServePath, LLC 
64826   PRIVATE       64.200.250.0/23       7911       Williams Communicati
64826   PRIVATE       64.200.255.0/24       7911       Williams Communicati
65535   PRIVATE       70.128.144.0/21       7132       SBC Internet Service
65205   PRIVATE       152.163.5.0/24        2056       America Online 
64512   PRIVATE       170.51.242.0/24      19037       CTI Compania de Tele
65111   PRIVATE       194.165.131.0/24      8376       GO-JOR Autonomous Sy
65004   PRIVATE       200.0.113.0/24       28477       Universidad Autonoma
65004   PRIVATE       200.4.0.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.1.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.2.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.3.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.4.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.5.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.6.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.7.0/24         28477       Universidad Autonoma
64900   PRIVATE       200.85.68.0/24       17399       Comsat Venezuela, CO
24413   UNALLOCATED   202.46.32.0/19       17623       China Netcom Corp.
18428   UNALLOCATED   203.91.0.0/24         9505       Taiwan Internet Gate
65005   PRIVATE       203.200.197.0/24      4755       Videsh Sanchar Nigam
65103   PRIVATE       216.53.126.0/23       7270       Net2Phone Corp. 
65500   PRIVATE       216.216.217.0/24     19029       New Edge Networks 

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
132.0.0.0/10           721     DLA Systems Automation Center
137.0.0.0/13           721     DLA Systems Automation Center
158.0.0.0/13           721     DLA Systems Automation Center
192.43.230.0/24       7575     Australian Academic and Rease
192.44.0.0/24         5501     Fraunhofer Gesellschaft
192.44.0.0/19          702     UUNET - Commercial IP service
192.70.164.0/24      25689     National Research Council of 
192.84.205.0/24        719     LANLINK autonomous system
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T WorldNet Services
192.172.0.0/19         721     DLA Systems Automation Center
192.200.100.0/24      7018     AT&T WorldNet Services

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

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:17       /9:5       /10:8       /11:17      /12:80      
/13:181     /14:330     /15:643     /16:8557    /17:2836    /18:4758    
/19:10849   /20:11922   /21:9968    /22:13281   /23:14269   /24:93349   
/25:324     /26:282     /27:177     /28:33      /29:12      /30:38      
/31:3       /32:31      

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

  ASN   No of nets  Total ann.   Description
18566      844           860      Covad Communications 
 6197      774           947      BellSouth Network Solutions, 
 7018      745          1527      AT&T WorldNet Services
 2386      645           933      AT&T Data Communications Serv
 9583      629           806      Sify Limited
 4323      567          1191      Time Warner Telecom
 4766      427           619      Korea Telecom (KIX)
 5668      390           486      CenturyTel Internet Holdings,
  702      384           605      UUNET - Commercial IP service
 1239      368           857      Sprint 
 7011      367           427      Citizens Utilities 
19916      363           369      OLM LLC 
 6198      349           479      BellSouth Network Solutions, 
11492      338           346      Cable One 
 6517      321           347      Yipes Communications, Inc. 
15270      315           342      PaeTec.net -a division of Pae
13609      289           332      Choice One Communications Inc
  701      286          1003      UUNET Technologies, Inc. 
18302      276           291      SK Global co., Ltd
22773      275           539      Cox Communications, Inc.

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

   4:2         8:25       12:1606     13:1        15:11       16:3      
  17:3        18:3        20:31       24:635      30:3        32:67     
  38:160      40:54       44:3        47:2        52:4        55:1      
  56:3        57:36       58:95       59:76       60:138      61:766    
  62:779      63:1892     64:2905     65:2092     66:2966     67:638    
  68:675      69:1265     70:213      71:26       72:414      80:655    
  81:565      82:495      83:296      84:285      85:342      86:131    
  87:60      125:17      128:145     129:169     130:96      131:297    
 132:36      133:1       134:146     135:43      136:152     137:66     
 138:166     139:65      140:498     141:141     142:148     143:142    
 144:219     145:34      146:301     147:132     148:281     149:188    
 150:107     151:70      152:113     153:93      154:5       155:140    
 156:79      157:113     158:163     159:173     160:87      161:76     
 162:236     163:148     164:187     165:191     166:151     167:258    
 168:444     169:146     170:306     171:10      190:1       192:5712   
 193:3312    194:2429    195:1562    196:658     198:3890    199:3237   
 200:4248    201:357     202:6133    203:6482    204:3819    205:2053   
 206:2447    207:2851    208:2024    209:3398    210:1692    211:825    
 212:1196    213:1348    214:312     215:39      216:3696    217:1145   
 218:225     219:130     220:508     221:290     222:129    

End of report



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