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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Sep 30 14:08:18 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 01 Oct, 2005

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

BGP routing table entries examined:                              171014
    Prefixes after maximum aggregation:                           97564
    Unique aggregates announced to Internet:                      82650
Total ASes present in the Internet Routing Table:                 20600
Origin-only ASes present in the Internet Routing Table:           17917
Origin ASes announcing only one prefix:                            8499
Transit ASes present in the Internet Routing Table:                2683
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:                                      28
Prefixes from unregistered ASNs in the Routing Table:                20
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             12
Number of addresses announced to Internet:                   1427924992
    Equivalent to 85 /8s, 28 /16s and 104 /24s
    Percentage of available address space announced:               38.5
    Percentage of allocated address space announced:               58.0
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       81421

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

Prefixes being announced by APNIC Region ASes:                    35620
    Total APNIC prefixes after maximum aggregation:               15642
Prefixes being announced from the APNIC address blocks:           33451
    Unique aggregates announced from the APNIC address blocks:    16498
APNIC Region origin ASes present in the Internet Routing Table:    2368
APNIC Region origin ASes announcing only one prefix:                695
APNIC Region transit ASes present in the Internet Routing Table:    365
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              201486848
    Equivalent to 12 /8s, 2 /16s and 114 /24s
    Percentage of available APNIC address space announced:         74.8

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:                     90868
    Total ARIN prefixes after maximum aggregation:                55367
Prefixes being announced from the ARIN address blocks:            70939
    Unique aggregates announced from the ARIN address blocks:     26417
ARIN Region origin ASes present in the Internet Routing Table:    10236
ARIN Region origin ASes announcing only one prefix:                3781
ARIN Region transit ASes present in the Internet Routing Table:     952
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          17
Number of ARIN addresses announced to Internet:               270880512
    Equivalent to 16 /8s, 37 /16s and 79 /24s
    Percentage of available ARIN address space announced:          67.3

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:                     33185
    Total RIPE prefixes after maximum aggregation:                22519
Prefixes being announced from the RIPE address blocks:            30235
    Unique aggregates announced from the RIPE address blocks:     20199
RIPE Region origin ASes present in the Internet Routing Table:     7153
RIPE Region origin ASes announcing only one prefix:                3781
RIPE Region transit ASes present in the Internet Routing Table:    1185
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          28
Number of RIPE addresses announced to Internet:               218879040
    Equivalent to 13 /8s, 11 /16s and 212 /24s
    Percentage of available RIPE address space announced:          65.2

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, 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:                    9576
    Total LACNIC prefixes after maximum aggregation:               3223
Prefixes being announced from the LACNIC address blocks:           7931
    Unique aggregates announced from the LACNIC address blocks:    4623
LACNIC Region origin ASes present in the Internet Routing Table:    637
LACNIC Region origin ASes announcing only one prefix:               199
LACNIC Region transit ASes present in the Internet Routing Table:   121
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC addresses announced to Internet:              22020864
    Equivalent to 1 /8s, 80 /16s and 3 /24s
    Percentage of available LACNIC address space announced:        32.8

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:                   1741
    Total AfriNIC prefixes after maximum aggregation:               813
Prefixes being announced from the AfriNIC address blocks:          1058
    Unique aggregates announced from the AfriNIC address blocks:    805
AfriNIC Region origin ASes present in the Internet Routing Table:   141
AfriNIC Region origin ASes announcing only one prefix:               43
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:              2734592
    Equivalent to 0 /8s, 41 /16s and 186 /24s
    Percentage of available AfriNIC address space announced:        8.1

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      989       6104         206   CHINANET-BACKBONE
 9583      797         77          12   Sify Limited
 1221      756       1330         519   Telstra Pty Ltd
 4755      721        259          66   Videsh Sanchar Nigam Ltd. Aut
 4766      611       3927         291   Korea Telecom (KIX)
 7545      509        108          71   TPG Internet Pty Ltd
17676      469       6803          99   Softbank BB Corp.
 9443      392         87          78   Primus Telecommunications
 2907      338       1763         315   SINET Japan
 9498      338        164          59   BHARTI BT INTERNET LTD.
17488      335         20           9   Hathway IP Over Cable Interne
 9929      330        224          46   China Netcom Corp.
17557      328         23         160   Pakistan Telecom
 7474      312        257         215   SingTel Optus Pty Ltd
 4802      307         67         159   Wantree Development
17974      296         66          13   PT TELEKOMUNIKASI INDONESIA
18302      295        109         157   SK Global co., Ltd
 9837      273         79         174   Powertel Ltd
18101      255         68          18   Reliance Infocom Ltd Internet
  703      253        263         206   UUNET - Commercial IP service

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1507       6358         985   AT&T WorldNet Services
 4323     1178        705         228   Time Warner Telecom
  721     1074      21938         309   DLA Systems Automation Center
  174     1068       5849        1002   Cogent Communications
  701      991       8120         834   UUNET Technologies, Inc. 
 6197      948        399         483   BellSouth Network Solutions, 
 2386      921        513         683   AT&T Data Communications Serv
 1239      858       2851         603   Sprint 
18566      857        240           7   Covad Communications 
20115      654        510         327   Charter Communications 
  209      635       3570         500   Qwest 
 3356      565      10659         438   Level 3 Communications, LLC 
 3602      556        131         107   Sprint Canada, Inc. 
22773      544       1480          31   Cox Communications, Inc.
 3561      538       2409         418   Savvis
 6198      474        417         228   BellSouth Network Solutions, 
 5668      472        115          23   CenturyTel Internet Holdings,
 7132      466       4950         398   SBC Internet Services
19262      464       1402         118   Verizon Global Networks 
  852      437       1092         384   Telus Advanced Communications

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      609       1993         481   UUNET - Commercial IP service
 3301      301       1081         287   TeliaNet Sweden
 3320      284       3230         237   Deutsche Telekom AG
 8220      267        475         262   COLT Telecommunications
  680      244       2040         240   DFN-IP service G-WiN
 8708      240        264         219   Romania Data Systems S.A.
 9121      231        336          26   TTnet Autonomous System
 3246      226        474         219   Song Networks
 1257      194        712         172   SWIPnet Swedish IP Network
 6746      188         50         163   Dynamic Network Technologies,
 5515      185        778         127   Sonera Solution Autonomous Sy
 3269      176       1606          69   TELECOM ITALIA
  786      174       1795         174   The JANET IP Service
 5400      168        289         141   BT Ignite European Backbone
 8866      162         37           9   Bulgarian Telecommunication C
 6830      158        669          33   UPC Distribution Services
 3300      155        185          91   AUCS Communications Services 
25186      144        145         101   France Telecom Transpac's Tra
 3215      140       1205          82   France Telecom Transpac
24863      138         37           6   LINKdotNET AS number

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      402        651         172   UniNet S.A. de C.V. 
16814      298         18           7   NSS, S.A. 
11172      272         85          63   Servicios Alestra S.A de C.V 
11664      204         22          24   Keytech SA 
 6147      190        116          23   Telefonica Del Peru 
19632      183         14           5   Metropolis Intercom S.A. 
22047      171        128           7   VTR PUNTO NET S.A. 
14117      155         10           5   Telefonica del Sur S.A. 
 7303      147         70          15   Telecom Argentina Stet-France
11556      132         64           2   Cable-Wireless Panama 
19169      132          8          30   Telconet 
 6505      121         89          85   Global One Communicaoes Ltda 
10481      121         48           8   Prima S.A. 
13999      116         52           9   Mega Cable S.A. de C.V. 
 6503      113        148          74   AVANTEL, S.A. 
18822      111          7          15   TELEFONICA MANQUEHUE 
21826      106         13          15   INTERCABLE 
 5639      103         12           9   Telecommunications Services o
23216       95         23          18   RAMtelecom Telecomunicaciones
 7738       84        346          18   Telecomunicacoes da Bahia S.A

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      266        708         223   The Internet Solution 
 5536      123          8          12   Internet Egypt Network
 8452      108         32           7   TEDATA
 2018       96        295          87   Tertiary Education Network 
15475       84         84           4   Nile Online
 2905       79        211          71   The Internetworking Company o
20928       61         16           2   Noor Advanced Technologies AS
24835       58         34           7   RAYA Telecom - Egypt
 6713       51         54           8   Itissalat Al-MAGHRIB
 5713       38        149          33   Telkom SA Ltd 
12455       36          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       20          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      1178         950      Time Warner Telecom
18566       857         850      Covad Communications 
 9583       797         785      Sify Limited
 4134       989         783      CHINANET-BACKBONE
  721      1074         765      DLA Systems Automation Center
 4755       721         655      Videsh Sanchar Nigam Ltd. Aut
22773       544         513      Cox Communications, Inc.
 6197       948         465      BellSouth Network Solutions, 
 3602       556         449      Sprint Canada, Inc. 
 5668       472         449      CenturyTel Internet Holdings,
 7545       509         438      TPG Internet Pty Ltd
17676       469         370      Softbank BB Corp.
19262       464         346      Verizon Global Networks 
 6467       394         345      E.Spire Communications, Inc. 
11492       339         330      Cable One 
20115       654         327      Charter Communications 
17488       335         326      Hathway IP Over Cable Interne
 4766       611         320      Korea Telecom (KIX)
15270       343         315      PaeTec.net -a division of Pae
 9443       392         314      Primus Telecommunications

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

Bad AS  Designation  Network              Transit AS  Description
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
65205   PRIVATE       152.163.5.0/24        2056       America Online 
65111   PRIVATE       194.165.131.0/24      8376       GO-JOR Autonomous Sy
65430   PRIVATE       196.44.128.0/19      20459       Telecom Namibia 
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
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      
/13:179     /14:326     /15:634     /16:8528    /17:2810    /18:4718    
/19:10813   /20:11858   /21:9909    /22:13264   /23:14212   /24:92663   
/25:334     /26:296     /27:190     /28:45      /29:14      /30:60      
/31:3       /32:31      

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

  ASN   No of nets  Total ann.   Description
18566      841           857      Covad Communications 
 6197      775           948      BellSouth Network Solutions, 
 7018      725          1507      AT&T WorldNet Services
 2386      633           921      AT&T Data Communications Serv
 9583      622           797      Sify Limited
 4323      562          1178      Time Warner Telecom
 4766      425           611      Korea Telecom (KIX)
  702      385           609      UUNET - Commercial IP service
 5668      380           472      CenturyTel Internet Holdings,
 1239      366           858      Sprint 
 7011      366           425      Citizens Utilities 
19916      363           369      OLM LLC 
 6198      347           474      BellSouth Network Solutions, 
11492      331           339      Cable One 
 6517      313           340      Yipes Communications, Inc. 
15270      313           343      PaeTec.net -a division of Pae
13609      290           332      Choice One Communications Inc
  701      282           991      UUNET Technologies, Inc. 
18302      280           295      SK Global co., Ltd
20115      277           654      Charter Communications 

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

   4:5         8:24       12:1600     13:1        15:10       16:3      
  17:3        18:3        20:27       24:564      30:3        32:66     
  38:157      40:54       44:3        47:2        52:4        55:1      
  56:3        57:23       58:157      59:67       60:140      61:766    
  62:764      63:1885     64:2881     65:2079     66:2955     67:634    
  68:655      69:1232     70:198      71:26       72:392      80:627    
  81:560      82:473      83:308      84:256      85:336      86:123    
  87:23      125:9       128:150     129:167     130:96      131:295    
 132:36      133:1       134:146     135:43      136:151     137:66     
 138:163     139:63      140:459     141:137     142:148     143:141    
 144:210     145:34      146:295     147:112     148:303     149:185    
 150:108     151:73      152:113     153:93      154:5       155:137    
 156:80      157:111     158:166     159:171     160:86      161:75     
 162:235     163:131     164:191     165:183     166:152     167:251    
 168:442     169:143     170:309     171:8       190:1       192:5713   
 193:3311    194:2410    195:1556    196:673     198:3868    199:3241   
 200:4171    201:343     202:6106    203:6434    204:3814    205:2041   
 206:2448    207:2836    208:2040    209:3396    210:1669    211:814    
 212:1200    213:1376    214:307     215:39      216:3695    217:1135   
 218:220     219:132     220:493     221:287     222:128    

End of report




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