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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Jun 17 14:07:38 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@lists.apnic.net

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

Routing Table Report   04:00 +10GMT Sat 18 Jun, 2005

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

BGP routing table entries examined:                              165397
    Prefixes after maximum aggregation:                           95434
    Unique aggregates announced to Internet:                      79395
Total ASes present in the Internet Routing Table:                 19882
Origin-only ASes present in the Internet Routing Table:           17316
Origin ASes announcing only one prefix:                            8118
Transit ASes present in the Internet Routing Table:                2566
Transit-only ASes present in the Internet Routing Table:             73
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      24
Prefixes from unregistered ASNs in the Routing Table:                17
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             15
Number of addresses announced to Internet:                   1401700320
    Equivalent to 83 /8s, 140 /16s and 63 /24s
    Percentage of available address space announced:               37.8
    Percentage of allocated address space announced:               59.4
    Percentage of available address space allocated:               63.7
Total number of prefixes smaller than registry allocations:       78031

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

Prefixes being announced by APNIC Region ASes:                    34130
    Total APNIC prefixes after maximum aggregation:               15802
Prefixes being announced from the APNIC address blocks:           32016
    Unique aggregates announced from the APNIC address blocks:    15851
APNIC Region origin ASes present in the Internet Routing Table:    2291
APNIC Region origin ASes announcing only one prefix:                670
APNIC Region transit ASes present in the Internet Routing Table:    344
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              187147392
    Equivalent to 11 /8s, 39 /16s and 164 /24s
    Percentage of available APNIC address space announced:         69.4

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:                     89145
    Total ARIN prefixes after maximum aggregation:                54093
Prefixes being announced from the ARIN address blocks:            69679
    Unique aggregates announced from the ARIN address blocks:     25491
ARIN Region origin ASes present in the Internet Routing Table:    10019
ARIN Region origin ASes announcing only one prefix:                3671
ARIN Region transit ASes present in the Internet Routing Table:     937
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          18
Number of ARIN addresses announced to Internet:               250583808
    Equivalent to 14 /8s, 239 /16s and 155 /24s
    Percentage of available ARIN address space announced:          71.1

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, 198/7, 204/6,
                       208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                     31449
    Total RIPE prefixes after maximum aggregation:                21642
Prefixes being announced from the RIPE address blocks:            28502
    Unique aggregates announced from the RIPE address blocks:     19126
RIPE Region origin ASes present in the Internet Routing Table:     6755
RIPE Region origin ASes announcing only one prefix:                3554
RIPE Region transit ASes present in the Internet Routing Table:    1118
Average RIPE Region AS path length visible:                         5.2
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               208788800
    Equivalent to 12 /8s, 113 /16s and 221 /24s
    Percentage of available RIPE address space announced:          73.2

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
RIPE Address Blocks    62/8, 80/5, 88/8, 188/8, 193/8, 194/7, 212/7
                       and 217/8

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

Prefixes being announced by LACNIC Region ASes:                    8986
    Total LACNIC prefixes after maximum aggregation:               3127
Prefixes being announced from the LACNIC address blocks:           7348
    Unique aggregates announced from the LACNIC address blocks:    4281
LACNIC Region origin ASes present in the Internet Routing Table:    621
LACNIC Region origin ASes announcing only one prefix:               188
LACNIC Region transit ASes present in the Internet Routing Table:   112
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC addresses announced to Internet:              20236832
    Equivalent to 1 /8s, 52 /16s and 202 /24s
    Percentage of available LACNIC address space announced:        60.3

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

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

Prefixes being announced by AfriNIC Region ASes:                   1664
    Total AfriNIC prefixes after maximum aggregation:               770
Prefixes being announced from the AfriNIC address blocks:          1015
    Unique aggregates announced from the AfriNIC address blocks:    781
AfriNIC Region origin ASes present in the Internet Routing Table:   128
AfriNIC Region origin ASes announcing only one prefix:               35
AfriNIC Region transit ASes present in the Internet Routing Table:   16
Average AfriNIC Region AS path length visible:                      4.7
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2294272
    Equivalent to 0 /8s, 35 /16s and 2 /24s
    Percentage of available AfriNIC address space announced:        6.8

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      916       5150         192   CHINANET-BACKBONE
 1221      760       1454         542   Telstra Pty Ltd
 9583      757         76          13   Sify Limited
 4755      632        247         140   Videsh Sanchar Nigam Ltd. Aut
 4766      596       3413         279   Korea Telecom (KIX)
 7545      500        104          71   TPG Internet Pty Ltd
17676      436       6589          75   Softbank BB Corp.
 9443      364         77          76   Primus Telecommunications
 9929      356        221          48   China Netcom Corp.
10036      345         65         311   C&M Communication Co. Ltd.
 2907      339       1805         316   SINET Japan
 9498      321         83          61   BHARTI BT INTERNET LTD.
17557      317         22         152   Pakistan Telecom
 7474      312        271         216   SingTel Optus Pty Ltd
 4802      282         49         161   Wantree Development
 4808      282        245         160   CNCGROUP IP network: China169
17974      265         65          14   PT TELEKOMUNIKASI INDONESIA
18302      261        108         148   SK Global co., Ltd
  703      253        276         207   UUNET - Commercial IP service
 2764      253        238         199   AAPT Limited

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1497       6461         974   AT&T WorldNet Services
  174     1343       5793        1069   Cogent Communications
 4323     1121        647         217   Time Warner Telecom
  721     1110      21787         313   DLA Systems Automation Center
  701     1010       8168         853   UUNET Technologies, Inc. 
 6197      927        526         429   BellSouth Network Solutions, 
 2386      892        527         659   AT&T Data Communications Serv
 1239      891       2871         644   Sprint 
18566      819        224           7   Covad Communications 
20115      644        492         317   Charter Communications 
  209      631       3506         497   Qwest 
27364      565         43          18   Armstrong Cable Services 
 3356      557      10821         427   Level 3 Communications, LLC 
 3602      541        123         100   Sprint Canada, Inc. 
 3561      538       2385         422   Savvis
  852      526       1093         388   Telus Advanced Communications
22773      495       1188          23   Cox Communications, Inc.
 5668      489        115          25   CenturyTel Internet Holdings,
 7725      487         60          15   MediaOne 
 6198      464        416         218   BellSouth Network Solutions, 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      597       2001         489   UUNET - Commercial IP service
 3320      306       3232         242   Deutsche Telekom AG
 3301      294       1080         282   TeliaNet Sweden
 8220      270        469         266   COLT Telecommunications
  680      252       2041         238   DFN-IP service G-WiN
 8708      233        254         216   Romania Data Systems S.A.
 3246      226        488         221   Song Networks
 1257      198        712         174   SWIPnet Swedish IP Network
 5515      179        778         129   Sonera Solution Autonomous Sy
  786      176       1794         176   The JANET IP Service
 6746      169         47         147   Dynamic Network Technologies,
  719      168        340         101   LANLINK autonomous system
 3269      168       1520          71   TELECOM ITALIA
 5400      164        285         137   BT Ignite European Backbone
 8866      158         21          11   Bulgarian Telecommunication C
 3300      155        184          87   AUCS Communications Services 
 6830      138        529          28   UPC Distribution Services
 9121      136        271          34   TTnet Autonomous System
 3352      135       1256          37   Ibernet, Internet Access Netw
25186      135        137          95   France Telecom Transpac's Tra

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      404        601         166   UniNet S.A. de C.V. 
16814      264         16          12   NSS, S.A. 
11172      219         98          53   Servicios Alestra S.A de C.V 
11664      198         19          23   Keytech SA 
 6147      197        110          21   Telefonica Del Peru 
14117      152          9           5   Telefonica del Sur S.A. 
 7303      149         68          21   Telecom Argentina Stet-France
 6505      132         90          89   Global One Communicaoes Ltda 
22047      131         96           6   VTR PUNTO NET S.A. 
11556      130         64           3   Cable-Wireless Panama 
19632      109         14           5   Metropolis Intercom S.A. 
13999      107         52           9   Mega Cable S.A. de C.V. 
18822      107          7          13   TELEFONICA MANQUEHUE 
19169      105          7          20   Telconet 
10481      101         40           7   Prima S.A. 
 6503      100        146          72   AVANTEL, S.A. 
21826       95         13          20   INTERCABLE 
22927       95         73          25   TELEFONICA DE ARGENTINA 
 5639       94         12           9   Telecommunications Services o
23216       93         24          23   RAMtelecom Telecomunicaciones

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      266        637         223   The Internet Solution 
 5536      119         15          17   Internet Egypt Network
20928       95         16           1   Noor Advanced Technologies AS
 2018       91        295          86   Tertiary Education Network 
 8452       82         28           6   TEDATA
 2905       75        266          67   The Internetworking Company o
 6713       59         54           8   Itissalat Al-MAGHRIB
24835       57         34           6   RAYA Telecom - Egypt
 9129       45          3           3   UUNET Kenya
12455       40          6           3   Jambonet Autonomous system
 5713       36        142          29   Telkom SA Ltd 
15475       34         84           4   Nile Online
15706       31          8           3   Sudatel Internet Exchange Aut
 8524       25          1           4   AUCEGYPT Autonomous System
16637       22         10          19   Johnnic e-Ventures 
33765       20          3           8   TANZANIA TELECOMMUNICATIONS C
10798       19          1          11   Standard Bank of South Africa
23889       19          5           8   MAURITIUS TELECOM
21491       18          1           1   UTL On-line is RF broadband I
12258       17          3          11   Vodacom Internet Company 

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

  ASN   No of nets  Net Savings Description
 4323      1121         904      Time Warner Telecom
18566       819         812      Covad Communications 
  721      1110         797      DLA Systems Automation Center
 9583       757         744      Sify Limited
 4134       916         724      CHINANET-BACKBONE
27364       565         547      Armstrong Cable Services 
 6197       927         498      BellSouth Network Solutions, 
 4755       632         492      Videsh Sanchar Nigam Ltd. Aut
22773       495         472      Cox Communications, Inc.
 7725       487         472      MediaOne 
 5668       489         464      CenturyTel Internet Holdings,
 3602       541         441      Sprint Canada, Inc. 
 7545       500         429      TPG Internet Pty Ltd
 6467       427         393      E.Spire Communications, Inc. 
17676       436         361      Softbank BB Corp.
 6140       403         330      ImpSat
20115       644         327      Charter Communications 
 4766       596         317      Korea Telecom (KIX)
 9929       356         308      China Netcom Corp.
19262       405         301      Verizon Global Networks 

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

Bad AS  Designation  Network              Transit AS  Description
65050   PRIVATE       168.96.148.0/24       6140       ImpSat
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
64512   PRIVATE       200.61.32.0/23       11664       Keytech SA 
64512   PRIVATE       200.61.62.0/23       11664       Keytech SA 
64512   PRIVATE       200.80.154.0/23      11664       Keytech SA 
65005   PRIVATE       203.200.197.0/24      4755       Videsh Sanchar Nigam
65444   PRIVATE       212.25.125.0/24       8551       Bezeq International
65529   PRIVATE       216.21.199.0/24      14697       VDot.Net 
65529   PRIVATE       216.152.237.0/24     14697       VDot.Net 

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

Network            Origin AS  Description
50.160.0.0/13         1221     Telstra Pty Ltd
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
172.32.0.0/24         7011     Citizens Utilities 
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
192.169.0.0/23        3970     RGnet, Inc. 
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        /8:18       /9:3       /10:8       /11:15      /12:73      
/13:159     /14:310     /15:592     /16:8424    /17:2593    /18:4439    
/19:10410   /20:11300   /21:9265    /22:12739   /23:13788   /24:90295   
/25:338     /26:290     /27:166     /28:42      /29:28      /30:69      
/31:0       /32:33      

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

  ASN   No of nets  Total ann.   Description
18566      803           819      Covad Communications 
 6197      755           927      BellSouth Network Solutions, 
 7018      688          1497      AT&T WorldNet Services
 2386      607           892      AT&T Data Communications Serv
 9583      574           757      Sify Limited
27364      556           565      Armstrong Cable Services 
 4323      542          1121      Time Warner Telecom
 7725      458           487      MediaOne 
 4766      414           596      Korea Telecom (KIX)
 5668      403           489      CenturyTel Internet Holdings,
 1239      379           891      Sprint 
  702      369           597      UUNET - Commercial IP service
 6198      338           464      BellSouth Network Solutions, 
10036      335           345      C&M Communication Co. Ltd.
 7011      304           354      Citizens Utilities 
 6467      294           427      E.Spire Communications, Inc. 
15270      282           304      PaeTec.net -a division of Pae
20115      280           644      Charter Communications 
 9929      275           356      China Netcom Corp.
  174      274          1343      Cogent Communications

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

   4:4         8:15       12:1547     13:1        15:9        16:2      
  17:3        18:3        20:4        24:1172     30:2        32:69     
  33:4        38:131      40:54       44:3        47:2        52:4      
  55:2        56:3        57:27       58:91       59:47       60:54     
  61:784      62:625      63:1874     64:2775     65:2085     66:2908   
  67:586      68:537      69:1048     70:116      71:9        72:232    
  80:584      81:557      82:429      83:274      84:207      85:252    
  86:24      128:186     129:172     130:87      131:296     132:38     
 133:1       134:145     135:39      136:133     137:69      138:168    
 139:60      140:195     141:99      142:149     143:145     144:192    
 145:33      146:286     147:108     148:315     149:171     150:105    
 151:65      152:107     153:87      154:5       155:142     156:78     
 157:97      158:160     159:172     160:77      161:69      162:326    
 163:92      164:211     165:179     166:156     167:237     168:427    
 169:140     170:311     171:8       172:1       192:5727    193:3185   
 194:2401    195:1559    196:660     198:3926    199:3323    200:4004   
 201:169     202:5822    203:6343    204:3800    205:2051    206:2531   
 207:2841    208:2058    209:3319    210:1709    211:842     212:1219   
 213:1319    214:255     215:32      216:3502    217:1152    218:207    
 219:108     220:391     221:232     222:110    

End of report




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