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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Nov 18 13:08:43 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 19 Nov, 2005

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

BGP routing table entries examined:                              175261
    Prefixes after maximum aggregation:                           98860
    Unique aggregates announced to Internet:                      84806
Total ASes present in the Internet Routing Table:                 20928
Origin-only ASes present in the Internet Routing Table:           18220
Origin ASes announcing only one prefix:                            8614
Transit ASes present in the Internet Routing Table:                2708
Transit-only ASes present in the Internet Routing Table:             74
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      21
Prefixes from unregistered ASNs in the Routing Table:                 2
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             12
Number of addresses announced to Internet:                   1462078080
    Equivalent to 87 /8s, 37 /16s and 138 /24s
    Percentage of available address space announced:               39.4
    Percentage of allocated address space announced:               59.4
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       84115

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

Prefixes being announced by APNIC Region ASes:                    36623
    Total APNIC prefixes after maximum aggregation:               15833
Prefixes being announced from the APNIC address blocks:           34396
    Unique aggregates announced from the APNIC address blocks:    16829
APNIC Region origin ASes present in the Internet Routing Table:    2404
APNIC Region origin ASes announcing only one prefix:                699
APNIC Region transit ASes present in the Internet Routing Table:    366
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              206407616
    Equivalent to 12 /8s, 77 /16s and 135 /24s
    Percentage of available APNIC address space announced:         76.6

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:                     92846
    Total ARIN prefixes after maximum aggregation:                55846
Prefixes being announced from the ARIN address blocks:            72314
    Unique aggregates announced from the ARIN address blocks:     27466
ARIN Region origin ASes present in the Internet Routing Table:    10355
ARIN Region origin ASes announcing only one prefix:                3835
ARIN Region transit ASes present in the Internet Routing Table:     968
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          17
Number of ARIN addresses announced to Internet:               276171520
    Equivalent to 16 /8s, 118 /16s and 11 /24s
    Percentage of available ARIN address space announced:          68.6

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:                     34088
    Total RIPE prefixes after maximum aggregation:                23049
Prefixes being announced from the RIPE address blocks:            31082
    Unique aggregates announced from the RIPE address blocks:     20835
RIPE Region origin ASes present in the Internet Routing Table:     7304
RIPE Region origin ASes announcing only one prefix:                3827
RIPE Region transit ASes present in the Internet Routing Table:    1194
Average RIPE Region AS path length visible:                         5.0
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               224086528
    Equivalent to 13 /8s, 91 /16s and 74 /24s
    Percentage of available RIPE address space announced:          66.8

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:                    9905
    Total LACNIC prefixes after maximum aggregation:               3282
Prefixes being announced from the LACNIC address blocks:           8203
    Unique aggregates announced from the LACNIC address blocks:    4769
LACNIC Region origin ASes present in the Internet Routing Table:    649
LACNIC Region origin ASes announcing only one prefix:               210
LACNIC Region transit ASes present in the Internet Routing Table:   120
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC addresses announced to Internet:              22832128
    Equivalent to 1 /8s, 92 /16s and 100 /24s
    Percentage of available LACNIC address space announced:        34.0

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:                   1792
    Total AfriNIC prefixes after maximum aggregation:               850
Prefixes being announced from the AfriNIC address blocks:          1147
    Unique aggregates announced from the AfriNIC address blocks:    833
AfriNIC Region origin ASes present in the Internet Routing Table:   142
AfriNIC Region origin ASes announcing only one prefix:               43
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:              2834432
    Equivalent to 0 /8s, 43 /16s and 64 /24s
    Percentage of available AfriNIC address space announced:        8.4

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     1026       6348         216   CHINANET-BACKBONE
 9583      828         77          12   Sify Limited
 4755      752        259          68   Videsh Sanchar Nigam Ltd. Aut
 1221      739       1342         513   Telstra Pty Ltd
 4766      634       3927         285   Korea Telecom (KIX)
 7545      514        108          71   TPG Internet Pty Ltd
17676      470       6819         100   Softbank BB Corp.
 9498      394        215          62   BHARTI BT INTERNET LTD.
 9443      392         87          78   Primus Telecommunications
17488      366         22          10   Hathway IP Over Cable Interne
 2907      340       1764         317   SINET Japan
 4802      335         73         153   Wantree Development
17557      333         25         161   Pakistan Telecom
 7474      332        258         228   SingTel Optus Pty Ltd
 9929      326        216          46   China Netcom Corp.
18302      308        142         169   SK Global co., Ltd
 9837      276         79         177   Powertel Ltd
17974      272         65          16   PT TELEKOMUNIKASI INDONESIA
18101      269         68          19   Reliance Infocom Ltd Internet
 9800      257        410          67   CHINA UNICOM

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1480       6317         960   AT&T WorldNet Services
 4323     1193        706         233   Time Warner Telecom
  174     1081       5847        1000   Cogent Communications
  721     1070      21938         308   DLA Systems Automation Center
  701      986       8136         830   UUNET Technologies, Inc. 
 6197      962        407         496   BellSouth Network Solutions, 
 2386      927        545         693   AT&T Data Communications Serv
18566      877        240           7   Covad Communications 
 1239      848       2801         598   Sprint 
  209      656       3621         519   Qwest 
20115      651        530         343   Charter Communications 
11492      616         81          10   Cable One 
  852      573       1093         381   Telus Advanced Communications
19916      563         49          54   OLM LLC 
19262      559       1578         139   Verizon Global Networks 
  855      558        247          65   Canadian Research Network 
22773      557       1468          25   Cox Communications, Inc.
 3602      542        126         103   Sprint Canada, Inc. 
 3356      520      10634         405   Level 3 Communications, LLC 
 6478      495       1427         276   AT&T Worldnet Services 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      611       1960         480   UUNET - Commercial IP service
 3301      303       1085         289   TeliaNet Sweden
 3320      285       3230         240   Deutsche Telekom AG
 8220      269        475         264   COLT Telecommunications
  680      244       2040         239   DFN-IP service G-WiN
 8708      233        274         219   Romania Data Systems S.A.
 3246      230        477         223   Song Networks
 6746      202         51         173   Dynamic Network Technologies,
 1257      194        712         171   SWIPnet Swedish IP Network
 3269      182       1829          68   TELECOM ITALIA
 5515      182        840         128   Sonera Solution Autonomous Sy
  786      174       1795         174   The JANET IP Service
 5400      162        317         135   BT Ignite European Backbone
 6830      161        669          33   UPC Distribution Services
 3300      159        185          94   AUCS Communications Services 
24863      151         37           6   LINKdotNET AS number
12479      150        322           5   Uni2 Autonomous System
25186      148        211         104   France Telecom Transpac's Tra
 3215      147       1269          78   France Telecom Transpac
 3352      140       1420          33   Ibernet, Internet Access Netw

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      392        707         168   UniNet S.A. de C.V. 
16814      295         18           7   NSS, S.A. 
11172      280         88          67   Servicios Alestra S.A de C.V 
11664      221         22          29   Keytech SA 
19632      196         14           5   Metropolis Intercom S.A. 
14117      184         11           6   Telefonica del Sur S.A. 
22047      171        128           7   VTR PUNTO NET S.A. 
 6147      161        118          21   Telefonica Del Peru 
 7303      152         72          19   Telecom Argentina Stet-France
13999      134         52           9   Mega Cable S.A. de C.V. 
11556      129         64           2   Cable-Wireless Panama 
19169      128          8          20   Telconet 
10481      121         48           8   Prima S.A. 
 6505      120         89          85   Global One Communicaoes Ltda 
 6503      113        148          74   AVANTEL, S.A. 
18822      112          7          13   TELEFONICA MANQUEHUE 
21826      112         14          18   INTERCABLE 
 5639      111         12           9   Telecommunications Services o
14522      107         12           8   SatNet S.A. 
11311       99          8          10   Sinectis S.A. 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      269        708         228   The Internet Solution 
 8452      139         36           8   TEDATA
 5536      122          8          16   Internet Egypt Network
 2018      116        298         103   Tertiary Education Network 
 2905       78        211          71   The Internetworking Company o
 6713       70         71          10   Itissalat Al-MAGHRIB
20928       60         16           2   Noor Advanced Technologies AS
24835       59         34           6   RAYA Telecom - Egypt
15475       57         84           4   Nile Online
 5713       38        151          34   Telkom SA Ltd 
12455       34          6           3   Jambonet Autonomous system
15706       31          8           3   Sudatel Internet Exchange Aut
33774       31          3          22   AS Number for Telecom Algeria
 8524       24          1           4   AUCEGYPT Autonomous System
16637       23         10          21   Johnnic e-Ventures 
10798       22          1          13   Standard Bank of South Africa
21280       21          4           4   Swift Global Kenya Ltd.Is an 
23889       21          5           9   MAURITIUS TELECOM
12258       17          3          11   Vodacom Internet Company 
15808       17          2           2   Communication Solutions Ltd i

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

  ASN   No of nets  Net Savings Description
 4323      1193         960      Time Warner Telecom
18566       877         870      Covad Communications 
 9583       828         816      Sify Limited
 4134      1026         810      CHINANET-BACKBONE
  721      1070         762      DLA Systems Automation Center
 4755       752         684      Videsh Sanchar Nigam Ltd. Aut
11492       616         606      Cable One 
22773       557         532      Cox Communications, Inc.
19916       563         509      OLM LLC 
  855       558         493      Canadian Research Network 
 6197       962         466      BellSouth Network Solutions, 
 5668       476         450      CenturyTel Internet Holdings,
 7545       514         443      TPG Internet Pty Ltd
 3602       542         439      Sprint Canada, Inc. 
19262       559         420      Verizon Global Networks 
17676       470         370      Softbank BB Corp.
 6467       404         357      E.Spire Communications, Inc. 
17488       366         356      Hathway IP Over Cable Interne
 4766       634         349      Korea Telecom (KIX)
  812       367         337      Rogers WAVE 

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

Bad AS  Designation  Network              Transit AS  Description
65003   PRIVATE       57.250.244.0/24      13879       SITA-EQUANT 
24413   UNALLOCATED   202.46.32.0/19       17623       China Netcom Corp.

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 
192.72.0.0/18         4780     Digital United Inc.
192.72.0.0/16         4780     Digital United Inc.
192.84.205.0/24        719     LANLINK autonomous system
192.119.135.0/24       270     NASA 
192.172.0.0/19         721     DLA Systems Automation Center

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

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:18       /9:5       /10:8       /11:17      /12:81      
/13:187     /14:340     /15:666     /16:8597    /17:2880    /18:4871    
/19:11026   /20:12142   /21:10194   /22:13440   /23:14626   /24:95225   
/25:345     /26:292     /27:194     /28:26      /29:12      /30:36      
/31:3       /32:30      

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

  ASN   No of nets  Total ann.   Description
18566      861           877      Covad Communications 
 6197      784           962      BellSouth Network Solutions, 
 7018      729          1480      AT&T WorldNet Services
 9583      650           828      Sify Limited
 2386      643           927      AT&T Data Communications Serv
11492      608           616      Cable One 
 4323      570          1193      Time Warner Telecom
19916      557           563      OLM LLC 
 4766      440           634      Korea Telecom (KIX)
  855      430           558      Canadian Research Network 
 7011      399           461      Citizens Utilities 
  702      391           611      UUNET - Commercial IP service
 5668      376           476      CenturyTel Internet Holdings,
 1239      365           848      Sprint 
 6198      354           492      BellSouth Network Solutions, 
 6517      323           349      Yipes Communications, Inc. 
15270      316           343      PaeTec.net -a division of Pae
13609      298           340      Choice One Communications Inc
18302      292           308      SK Global co., Ltd
  701      286           986      UUNET Technologies, Inc. 

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

   4:3         8:36       12:1622     13:1        15:11       16:3      
  17:3        18:3        20:42       24:672      30:2        32:64     
  38:180      40:54       44:3        47:3        52:4        55:1      
  56:3        57:35       58:98       59:90       60:145      61:795    
  62:783      63:1900     64:2938     65:2129     66:2892     67:638    
  68:682      69:1320     70:231      71:34       72:460      80:678    
  81:595      82:495      83:286      84:307      85:367      86:185    
  87:93      125:64      128:166     129:169     130:97      131:300    
 132:35      133:1       134:151     135:45      136:168     137:70     
 138:173     139:71      140:437     141:146     142:399     143:144    
 144:220     145:34      146:302     147:132     148:270     149:195    
 150:108     151:72      152:111     153:93      154:5       155:154    
 156:84      157:119     158:145     159:179     160:85      161:77     
 162:240     163:145     164:190     165:184     166:146     167:246    
 168:459     169:144     170:313     171:12      192:5743    193:3352   
 194:2434    195:1623    196:711     198:3930    199:3258    200:4295   
 201:442     202:6245    203:6594    204:3833    205:2052    206:2442   
 207:2918    208:2031    209:3461    210:1770    211:846     212:1212   
 213:1364    214:309     215:41      216:3846    217:1165    218:217    
 219:128     220:537     221:313     222:127    

End of report