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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Sep 16 14:08:22 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 17 Sep, 2005

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

BGP routing table entries examined:                              170386
    Prefixes after maximum aggregation:                           97174
    Unique aggregates announced to Internet:                      81546
Total ASes present in the Internet Routing Table:                 20513
Origin-only ASes present in the Internet Routing Table:           17842
Origin ASes announcing only one prefix:                            8441
Transit ASes present in the Internet Routing Table:                2671
Transit-only ASes present in the Internet Routing Table:             71
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      26
Prefixes from unregistered ASNs in the Routing Table:                26
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             12
Number of addresses announced to Internet:                   1424234304
    Equivalent to 84 /8s, 228 /16s and 23 /24s
    Percentage of available address space announced:               38.4
    Percentage of allocated address space announced:               57.9
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       81067

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

Prefixes being announced by APNIC Region ASes:                    35251
    Total APNIC prefixes after maximum aggregation:               15514
Prefixes being announced from the APNIC address blocks:           33121
    Unique aggregates announced from the APNIC address blocks:    15669
APNIC Region origin ASes present in the Internet Routing Table:    2360
APNIC Region origin ASes announcing only one prefix:                696
APNIC Region transit ASes present in the Internet Routing Table:    360
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              199764992
    Equivalent to 11 /8s, 232 /16s and 44 /24s
    Percentage of available APNIC address space announced:         74.1

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:                     90936
    Total ARIN prefixes after maximum aggregation:                55234
Prefixes being announced from the ARIN address blocks:            71100
    Unique aggregates announced from the ARIN address blocks:     26179
ARIN Region origin ASes present in the Internet Routing Table:    10223
ARIN Region origin ASes announcing only one prefix:                3772
ARIN Region transit ASes present in the Internet Routing Table:     955
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               268101888
    Equivalent to 15 /8s, 250 /16s and 233 /24s
    Percentage of available ARIN address space announced:          66.6

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:                     32911
    Total RIPE prefixes after maximum aggregation:                22417
Prefixes being announced from the RIPE address blocks:            29968
    Unique aggregates announced from the RIPE address blocks:     20184
RIPE Region origin ASes present in the Internet Routing Table:     7092
RIPE Region origin ASes announcing only one prefix:                3732
RIPE Region transit ASes present in the Internet Routing Table:    1184
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               217836160
    Equivalent to 12 /8s, 251 /16s and 234 /24s
    Percentage of available RIPE address space announced:          64.9

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:                    9520
    Total LACNIC prefixes after maximum aggregation:               3197
Prefixes being announced from the LACNIC address blocks:           7876
    Unique aggregates announced from the LACNIC address blocks:    4588
LACNIC Region origin ASes present in the Internet Routing Table:    636
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:              22039808
    Equivalent to 1 /8s, 80 /16s and 77 /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:                   1738
    Total AfriNIC prefixes after maximum aggregation:               812
Prefixes being announced from the AfriNIC address blocks:          1056
    Unique aggregates announced from the AfriNIC address blocks:    799
AfriNIC Region origin ASes present in the Internet Routing Table:   139
AfriNIC Region origin ASes announcing only one prefix:               42
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:              2660608
    Equivalent to 0 /8s, 40 /16s and 153 /24s
    Percentage of available AfriNIC address space announced:        7.9

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      965       5948         201   CHINANET-BACKBONE
 9583      788         77          14   Sify Limited
 1221      745       1328         514   Telstra Pty Ltd
 4755      713        259          63   Videsh Sanchar Nigam Ltd. Aut
 4766      608       3927         287   Korea Telecom (KIX)
 7545      516        108          73   TPG Internet Pty Ltd
17676      468       6787         101   Softbank BB Corp.
 9443      386         84          79   Primus Telecommunications
 9498      337        147          59   BHARTI BT INTERNET LTD.
 9929      335        224          46   China Netcom Corp.
 2907      332       1756         309   SINET Japan
17557      328         23         156   Pakistan Telecom
17488      320         19           8   Hathway IP Over Cable Interne
 7474      314        257         217   SingTel Optus Pty Ltd
 4802      301         60         152   Wantree Development
18302      294        109         154   SK Global co., Ltd
 9837      278         80         179   Powertel Ltd
17974      272         65          14   PT TELEKOMUNIKASI INDONESIA
  703      254        263         206   UUNET - Commercial IP service
 9800      251        394          66   CHINA UNICOM

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1500       6374         981   AT&T WorldNet Services
 4323     1173        706         229   Time Warner Telecom
  721     1083      21922         310   DLA Systems Automation Center
  174     1082       5851        1014   Cogent Communications
  701      999       8120         841   UUNET Technologies, Inc. 
 6197      940        389         480   BellSouth Network Solutions, 
 2386      915        515         677   AT&T Data Communications Serv
 1239      867       2852         611   Sprint 
18566      848        225          23   Covad Communications 
20115      647        509         327   Charter Communications 
  209      628       3441         494   Qwest 
 3356      576      10661         445   Level 3 Communications, LLC 
 3602      557        131         110   Sprint Canada, Inc. 
27364      554         44          18   Armstrong Cable Services 
 3561      541       2409         421   Savvis
22773      529       1352          28   Cox Communications, Inc.
 5668      495        115          23   CenturyTel Internet Holdings,
 6198      472        417         228   BellSouth Network Solutions, 
 7132      462       4949         395   SBC Internet Services
19262      453       1374         121   Verizon Global Networks 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      593       1994         480   UUNET - Commercial IP service
 3301      300       1081         286   TeliaNet Sweden
 3320      291       3230         241   Deutsche Telekom AG
 8220      266        474         261   COLT Telecommunications
  680      244       2040         240   DFN-IP service G-WiN
 8708      236        262         216   Romania Data Systems S.A.
 3246      229        476         222   Song Networks
 9121      200        292          40   TTnet Autonomous System
 1257      195        712         173   SWIPnet Swedish IP Network
 6746      184         50         160   Dynamic Network Technologies,
 5515      181        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      167         37           9   Bulgarian Telecommunication C
 6830      157        669          33   UPC Distribution Services
 3300      156        185          91   AUCS Communications Services 
25186      143        145         100   France Telecom Transpac's Tra
24863      138         37           6   LINKdotNET AS number
 3215      136       1165          80   France Telecom Transpac

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      397        650         168   UniNet S.A. de C.V. 
16814      298         18           7   NSS, S.A. 
11172      248         83          60   Servicios Alestra S.A de C.V 
 6147      191        118          21   Telefonica Del Peru 
11664      191         20          24   Keytech SA 
19632      183         14           5   Metropolis Intercom S.A. 
22047      172        128           7   VTR PUNTO NET S.A. 
14117      153         10           5   Telefonica del Sur S.A. 
 7303      148         70          13   Telecom Argentina Stet-France
11556      129         64           2   Cable-Wireless Panama 
 6505      121         89          85   Global One Communicaoes Ltda 
10481      120         48           8   Prima S.A. 
19169      120          8          28   Telconet 
13999      116         52           9   Mega Cable S.A. de C.V. 
 6503      114        148          75   AVANTEL, S.A. 
18822      111          7          15   TELEFONICA MANQUEHUE 
21826      104         13          15   INTERCABLE 
 5639      103         12           9   Telecommunications Services o
11311       97          8          14   Sinectis S.A. 
23216       96         24          19   RAMtelecom Telecomunicaciones

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      106         32           7   TEDATA
 2018       96        295          87   Tertiary Education Network 
15475       92         84           4   Nile Online
 2905       77        210          69   The Internetworking Company o
20928       59         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       30          4          20   AS Number for Telecom Algeria
 8524       24          1           4   AUCEGYPT Autonomous System
23889       23          5           9   MAURITIUS TELECOM
16637       22         10          19   Johnnic e-Ventures 
21280       22          4           5   Swift Global Kenya Ltd.Is an 
10798       21          1          12   Standard Bank of South Africa
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      1173         944      Time Warner Telecom
18566       848         825      Covad Communications 
 9583       788         774      Sify Limited
  721      1083         773      DLA Systems Automation Center
 4134       965         764      CHINANET-BACKBONE
 4755       713         650      Videsh Sanchar Nigam Ltd. Aut
27364       554         536      Armstrong Cable Services 
22773       529         501      Cox Communications, Inc.
 5668       495         472      CenturyTel Internet Holdings,
 6197       940         460      BellSouth Network Solutions, 
 3602       557         447      Sprint Canada, Inc. 
 7545       516         443      TPG Internet Pty Ltd
17676       468         367      Softbank BB Corp.
 6467       399         349      E.Spire Communications, Inc. 
19262       453         332      Verizon Global Networks 
11492       335         327      Cable One 
 4766       608         321      Korea Telecom (KIX)
20115       647         320      Charter Communications 
17488       320         312      Hathway IP Over Cable Interne
15270       337         310      PaeTec.net -a division of Pae

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
65511   PRIVATE       65.77.145.0/24       16605       Aaro Broadband Wirel
65205   PRIVATE       152.163.5.0/24        2056       America Online 
65111   PRIVATE       194.165.131.0/24      8697       Jordan Telecommunica
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
24413   UNALLOCATED   202.46.32.0/19       17623       China Netcom Corp.
65500   PRIVATE       202.93.233.0/24       4795       INDOSATNET-ASN
65500   PRIVATE       202.93.234.0/24       4795       INDOSATNET-ASN
65500   PRIVATE       202.93.235.0/24       4795       INDOSATNET-ASN
65500   PRIVATE       202.93.236.0/24       4795       INDOSATNET-ASN
65500   PRIVATE       202.93.237.0/24       4795       INDOSATNET-ASN
65500   PRIVATE       202.93.238.0/24       4795       INDOSATNET-ASN
18428   UNALLOCATED   203.91.0.0/24         9505       Taiwan Internet Gate
65005   PRIVATE       203.200.197.0/24      4755       Videsh Sanchar Nigam
65500   PRIVATE       211.158.36.0/22      23851       Chongqing Broadband 
65500   PRIVATE       211.158.40.0/22      23851       Chongqing Broadband 
65500   PRIVATE       211.158.44.0/22      23851       Chongqing Broadband 

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        /8:18       /9:5       /10:8       /11:17      /12:80      
/13:175     /14:323     /15:627     /16:8522    /17:2742    /18:4675    
/19:10744   /20:11804   /21:9854    /22:13211   /23:14085   /24:92579   
/25:325     /26:271     /27:169     /28:45      /29:14      /30:60      
/31:3       /32:30      

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

  ASN   No of nets  Total ann.   Description
18566      833           848      Covad Communications 
 6197      769           940      BellSouth Network Solutions, 
 7018      710          1500      AT&T WorldNet Services
 2386      626           915      AT&T Data Communications Serv
 9583      611           788      Sify Limited
 4323      561          1173      Time Warner Telecom
27364      545           554      Armstrong Cable Services 
 4766      425           608      Korea Telecom (KIX)
 5668      403           495      CenturyTel Internet Holdings,
  702      369           593      UUNET - Commercial IP service
 1239      369           867      Sprint 
 7011      368           423      Citizens Utilities 
19916      363           369      OLM LLC 
 6198      345           472      BellSouth Network Solutions, 
11492      327           335      Cable One 
 6517      310           336      Yipes Communications, Inc. 
15270      307           337      PaeTec.net -a division of Pae
  701      285           999      UUNET Technologies, Inc. 
18302      279           294      SK Global co., Ltd
20115      270           647      Charter Communications 

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

   4:4         8:23       12:1589     13:1        15:10       16:2      
  17:3        18:3        20:21       24:1070     30:3        32:61     
  38:149      40:55       44:4        47:2        52:4        55:1      
  56:3        57:23       58:156      59:68       60:122      61:726    
  62:759      63:1890     64:2875     65:2076     66:2910     67:614    
  68:612      69:1225     70:185      71:17       72:382      80:602    
  81:552      82:469      83:307      84:245      85:306      86:110    
  87:16      125:1       128:158     129:167     130:94      131:293    
 132:36      133:1       134:145     135:43      136:151     137:66     
 138:164     139:62      140:429     141:105     142:145     143:141    
 144:217     145:34      146:295     147:118     148:302     149:182    
 150:107     151:71      152:112     153:93      154:5       155:147    
 156:80      157:112     158:164     159:170     160:85      161:73     
 162:231     163:135     164:183     165:183     166:155     167:243    
 168:438     169:142     170:320     171:8       190:1       192:5709   
 193:3295    194:2402    195:1552    196:677     198:3881    199:3296   
 200:4179    201:327     202:6102    203:6384    204:3797    205:2069   
 206:2451    207:2821    208:2040    209:3355    210:1655    211:794    
 212:1214    213:1357    214:296     215:36      216:3669    217:1120   
 218:220     219:138     220:479     221:276     222:126    

End of report




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