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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Nov 11 13:08:34 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 12 Nov, 2005

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

BGP routing table entries examined:                              174875
    Prefixes after maximum aggregation:                           98803
    Unique aggregates announced to Internet:                      84517
Total ASes present in the Internet Routing Table:                 20867
Origin-only ASes present in the Internet Routing Table:           18147
Origin ASes announcing only one prefix:                            8595
Transit ASes present in the Internet Routing Table:                2720
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:                                      21
Prefixes from unregistered ASNs in the Routing Table:                 3
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             12
Number of addresses announced to Internet:                   1458454176
    Equivalent to 86 /8s, 238 /16s and 62 /24s
    Percentage of available address space announced:               39.3
    Percentage of allocated address space announced:               59.2
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       84066

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

Prefixes being announced by APNIC Region ASes:                    36485
    Total APNIC prefixes after maximum aggregation:               15862
Prefixes being announced from the APNIC address blocks:           34252
    Unique aggregates announced from the APNIC address blocks:    16829
APNIC Region origin ASes present in the Internet Routing Table:    2396
APNIC Region origin ASes announcing only one prefix:                695
APNIC Region transit ASes present in the Internet Routing Table:    367
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              205774784
    Equivalent to 12 /8s, 67 /16s and 223 /24s
    Percentage of available APNIC address space announced:         76.4

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:                     92805
    Total ARIN prefixes after maximum aggregation:                55833
Prefixes being announced from the ARIN address blocks:            72359
    Unique aggregates announced from the ARIN address blocks:     27342
ARIN Region origin ASes present in the Internet Routing Table:    10325
ARIN Region origin ASes announcing only one prefix:                3832
ARIN Region transit ASes present in the Internet Routing Table:     966
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          17
Number of ARIN addresses announced to Internet:               274748928
    Equivalent to 16 /8s, 96 /16s and 86 /24s
    Percentage of available ARIN address space announced:          68.2

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:                     33948
    Total RIPE prefixes after maximum aggregation:                22968
Prefixes being announced from the RIPE address blocks:            30960
    Unique aggregates announced from the RIPE address blocks:     20751
RIPE Region origin ASes present in the Internet Routing Table:     7279
RIPE Region origin ASes announcing only one prefix:                3814
RIPE Region transit ASes present in the Internet Routing Table:    1206
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               222772736
    Equivalent to 13 /8s, 71 /16s and 62 /24s
    Percentage of available RIPE address space announced:          66.4

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:                    9821
    Total LACNIC prefixes after maximum aggregation:               3298
Prefixes being announced from the LACNIC address blocks:           8117
    Unique aggregates announced from the LACNIC address blocks:    4738
LACNIC Region origin ASes present in the Internet Routing Table:    650
LACNIC Region origin ASes announcing only one prefix:               210
LACNIC Region transit ASes present in the Internet Routing Table:   122
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC addresses announced to Internet:              22713600
    Equivalent to 1 /8s, 90 /16s and 149 /24s
    Percentage of available LACNIC address space announced:        33.8

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:                   1808
    Total AfriNIC prefixes after maximum aggregation:               842
Prefixes being announced from the AfriNIC address blocks:          1134
    Unique aggregates announced from the AfriNIC address blocks:    832
AfriNIC Region origin ASes present in the Internet Routing Table:   142
AfriNIC Region origin ASes announcing only one prefix:               44
AfriNIC Region transit ASes present in the Internet Routing Table:   20
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2864640
    Equivalent to 0 /8s, 43 /16s and 182 /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     1003       6327         214   CHINANET-BACKBONE
 9583      823         77          12   Sify Limited
 4755      744        259          65   Videsh Sanchar Nigam Ltd. Aut
 1221      741       1342         515   Telstra Pty Ltd
 4766      625       3927         285   Korea Telecom (KIX)
 7545      515        108          71   TPG Internet Pty Ltd
17676      470       6819         100   Softbank BB Corp.
 9498      396        216          64   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         163   Pakistan Telecom
 7474      332        258         228   SingTel Optus Pty Ltd
 9929      326        216          46   China Netcom Corp.
18302      305        141         171   SK Global co., Ltd
 9837      274         79         175   Powertel Ltd
17974      272         65          16   PT TELEKOMUNIKASI INDONESIA
18101      269         68          19   Reliance Infocom Ltd Internet
 9800      255        396          67   CHINA UNICOM

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1476       6324         970   AT&T WorldNet Services
 4323     1194        706         233   Time Warner Telecom
  721     1062      21936         301   DLA Systems Automation Center
  174     1052       5848         984   Cogent Communications
  701     1008       8152         847   UUNET Technologies, Inc. 
 6197      959        407         496   BellSouth Network Solutions, 
 2386      931        546         696   AT&T Data Communications Serv
18566      875        240           7   Covad Communications 
 1239      846       2801         596   Sprint 
  209      659       3621         523   Qwest 
20115      644        522         339   Charter Communications 
11492      595         81          10   Cable One 
  852      574       1093         381   Telus Advanced Communications
 3602      565        129         107   Sprint Canada, Inc. 
19916      563         49          54   OLM LLC 
  855      555        247          65   Canadian Research Network 
22773      555       1472          28   Cox Communications, Inc.
19262      538       1556         134   Verizon Global Networks 
 3356      521      10634         401   Level 3 Communications, LLC 
 6478      492       1300         275   AT&T Worldnet Services 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      609       1959         478   UUNET - Commercial IP service
 3301      305       1085         291   TeliaNet Sweden
 3320      285       3230         240   Deutsche Telekom AG
 8220      270        475         265   COLT Telecommunications
  680      244       2040         239   DFN-IP service G-WiN
 8708      234        274         220   Romania Data Systems S.A.
 3246      228        475         221   Song Networks
 6746      201         51         172   Dynamic Network Technologies,
 1257      191        712         169   SWIPnet Swedish IP Network
 5515      182        840         128   Sonera Solution Autonomous Sy
 3269      180       1765          68   TELECOM ITALIA
  786      174       1795         174   The JANET IP Service
 5400      161        316         134   BT Ignite European Backbone
 6830      161        669          33   UPC Distribution Services
 8866      159         37           9   Bulgarian Telecommunication C
 3300      157        170          91   AUCS Communications Services 
12479      150        322           5   Uni2 Autonomous System
24863      148         37           6   LINKdotNET AS number
25186      148        211         104   France Telecom Transpac's Tra
 3215      144       1237          78   France Telecom Transpac

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      387        690         165   UniNet S.A. de C.V. 
16814      296         18           7   NSS, S.A. 
11172      283         88          68   Servicios Alestra S.A de C.V 
11664      204         22          28   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      160        116          23   Telefonica Del Peru 
 7303      145         69          19   Telecom Argentina Stet-France
11556      130         64           3   Cable-Wireless Panama 
13999      128         52           9   Mega Cable S.A. de C.V. 
19169      125          8          26   Telconet 
 6505      121         89          85   Global One Communicaoes Ltda 
10481      121         48           8   Prima S.A. 
18822      112          7          13   TELEFONICA MANQUEHUE 
 5639      111         12           9   Telecommunications Services o
21826      111         14          19   INTERCABLE 
 6503      109        148          76   AVANTEL, S.A. 
14522      101         12           8   SatNet S.A. 
11311       98          8          15   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         44           7   TEDATA
 5536      123          8          12   Internet Egypt Network
 2018      116        298         103   Tertiary Education Network 
15475       82         84           4   Nile Online
 2905       78        211          71   The Internetworking Company o
 6713       70         71          10   Itissalat Al-MAGHRIB
20928       60         16           2   Noor Advanced Technologies AS
24835       57         34           6   RAYA Telecom - Egypt
 5713       38        151          34   Telkom SA Ltd 
12455       33          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       24         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      1194         961      Time Warner Telecom
18566       875         868      Covad Communications 
 9583       823         811      Sify Limited
 4134      1003         789      CHINANET-BACKBONE
  721      1062         761      DLA Systems Automation Center
 4755       744         679      Videsh Sanchar Nigam Ltd. Aut
11492       595         585      Cable One 
22773       555         527      Cox Communications, Inc.
19916       563         509      OLM LLC 
  855       555         490      Canadian Research Network 
 6197       959         463      BellSouth Network Solutions, 
 3602       565         458      Sprint Canada, Inc. 
 5668       471         445      CenturyTel Internet Holdings,
 7545       515         444      TPG Internet Pty Ltd
19262       538         404      Verizon Global Networks 
17676       470         370      Softbank BB Corp.
17488       366         356      Hathway IP Over Cable Interne
 6467       398         351      E.Spire Communications, Inc. 
  812       368         343      Rogers WAVE 
 4766       625         340      Korea Telecom (KIX)

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

Bad AS  Designation  Network              Transit AS  Description
65003   PRIVATE       57.250.244.0/24      13879       SITA-EQUANT 
65108   PRIVATE       193.202.224.0/20      4589       Easynet Group
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      /12:80      
/13:186     /14:340     /15:663     /16:8592    /17:2869    /18:4838    
/19:10998   /20:12096   /21:10140   /22:13429   /23:14626   /24:95043   
/25:333     /26:288     /27:192     /28:33      /29:12      /30:37      
/31:3       /32:29      

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

  ASN   No of nets  Total ann.   Description
18566      859           875      Covad Communications 
 6197      781           959      BellSouth Network Solutions, 
 7018      725          1476      AT&T WorldNet Services
 9583      645           823      Sify Limited
 2386      644           931      AT&T Data Communications Serv
11492      587           595      Cable One 
 4323      571          1194      Time Warner Telecom
19916      557           563      OLM LLC 
 4766      431           625      Korea Telecom (KIX)
  855      427           555      Canadian Research Network 
 7011      397           459      Citizens Utilities 
  702      390           609      UUNET - Commercial IP service
 5668      373           471      CenturyTel Internet Holdings,
 1239      364           846      Sprint 
 6198      353           483      BellSouth Network Solutions, 
 6517      324           350      Yipes Communications, Inc. 
15270      315           342      PaeTec.net -a division of Pae
13609      297           339      Choice One Communications Inc
18302      289           305      SK Global co., Ltd
  701      283          1008      UUNET Technologies, Inc. 

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

   4:3         8:32       12:1616     13:1        15:11       16:3      
  17:3        18:3        20:41       24:703      30:2        32:64     
  38:178      40:54       44:3        47:3        52:4        55:1      
  56:3        57:35       58:101      59:91       60:147      61:788    
  62:809      63:1893     64:2967     65:2135     66:2916     67:694    
  68:661      69:1325     70:223      71:40       72:439      80:651    
  81:592      82:491      83:314      84:301      85:365      86:183    
  87:88      125:40      128:153     129:169     130:95      131:308    
 132:35      133:1       134:148     135:42      136:161     137:70     
 138:173     139:71      140:437     141:142     142:399     143:141    
 144:220     145:34      146:299     147:131     148:267     149:194    
 150:108     151:70      152:111     153:94      154:5       155:144    
 156:82      157:117     158:147     159:178     160:87      161:77     
 162:235     163:148     164:190     165:185     166:146     167:248    
 168:454     169:144     170:312     171:12      190:1       192:5735   
 193:3349    194:2445    195:1615    196:698     198:3909    199:3230   
 200:4253    201:429     202:6231    203:6574    204:3815    205:2060   
 206:2446    207:2899    208:2018    209:3488    210:1760    211:844    
 212:1208    213:1363    214:314     215:40      216:3864    217:1150   
 218:214     219:129     220:526     221:308     222:127    

End of report




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