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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Sep 09 14:08:40 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 10 Sep, 2005

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

BGP routing table entries examined:                              169983
    Prefixes after maximum aggregation:                           97203
    Unique aggregates announced to Internet:                      82000
Total ASes present in the Internet Routing Table:                 20445
Origin-only ASes present in the Internet Routing Table:           17787
Origin ASes announcing only one prefix:                            8431
Transit ASes present in the Internet Routing Table:                2658
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:                                      26
Prefixes from unregistered ASNs in the Routing Table:                21
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             12
Number of addresses announced to Internet:                   1419431168
    Equivalent to 84 /8s, 154 /16s and 205 /24s
    Percentage of available address space announced:               38.3
    Percentage of allocated address space announced:               57.7
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       80774

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

Prefixes being announced by APNIC Region ASes:                    35338
    Total APNIC prefixes after maximum aggregation:               15719
Prefixes being announced from the APNIC address blocks:           33197
    Unique aggregates announced from the APNIC address blocks:    16372
APNIC Region origin ASes present in the Internet Routing Table:    2356
APNIC Region origin ASes announcing only one prefix:                700
APNIC Region transit ASes present in the Internet Routing Table:    362
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              197369344
    Equivalent to 11 /8s, 195 /16s and 158 /24s
    Percentage of available APNIC address space announced:         73.2

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:                     90654
    Total ARIN prefixes after maximum aggregation:                55107
Prefixes being announced from the ARIN address blocks:            70887
    Unique aggregates announced from the ARIN address blocks:     26032
ARIN Region origin ASes present in the Internet Routing Table:    10182
ARIN Region origin ASes announcing only one prefix:                3765
ARIN Region transit ASes present in the Internet Routing Table:     950
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               266366720
    Equivalent to 15 /8s, 224 /16s and 111 /24s
    Percentage of available ARIN address space announced:          66.2

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:                     32763
    Total RIPE prefixes after maximum aggregation:                22377
Prefixes being announced from the RIPE address blocks:            29810
    Unique aggregates announced from the RIPE address blocks:     20148
RIPE Region origin ASes present in the Internet Routing Table:     7070
RIPE Region origin ASes announcing only one prefix:                3728
RIPE Region transit ASes present in the Internet Routing Table:    1170
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               217250688
    Equivalent to 12 /8s, 242 /16s and 251 /24s
    Percentage of available RIPE address space announced:          64.7

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:                    9508
    Total LACNIC prefixes after maximum aggregation:               3190
Prefixes being announced from the LACNIC address blocks:           7859
    Unique aggregates announced from the LACNIC address blocks:    4571
LACNIC Region origin ASes present in the Internet Routing Table:    634
LACNIC Region origin ASes announcing only one prefix:               196
LACNIC Region transit ASes present in the Internet Routing Table:   124
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        26
Number of LACNIC addresses announced to Internet:              21992960
    Equivalent to 1 /8s, 79 /16s and 150 /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:                   1695
    Total AfriNIC prefixes after maximum aggregation:               810
Prefixes being announced from the AfriNIC address blocks:          1024
    Unique aggregates announced from the AfriNIC address blocks:    775
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:   17
Average AfriNIC Region AS path length visible:                      4.6
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2650112
    Equivalent to 0 /8s, 40 /16s and 112 /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       5884         200   CHINANET-BACKBONE
 9583      779         77          12   Sify Limited
 1221      749       1327         517   Telstra Pty Ltd
 4755      708        259          64   Videsh Sanchar Nigam Ltd. Aut
 4766      604       3927         287   Korea Telecom (KIX)
 7545      520        108          73   TPG Internet Pty Ltd
17676      465       6739          99   Softbank BB Corp.
 9443      386         84          79   Primus Telecommunications
 2907      337       1789         314   SINET Japan
17557      337         24         161   Pakistan Telecom
 9498      336        147          60   BHARTI BT INTERNET LTD.
 9929      335        224          46   China Netcom Corp.
17488      319         19           8   Hathway IP Over Cable Interne
 7474      315        257         218   SingTel Optus Pty Ltd
 4802      299         60         152   Wantree Development
18302      295        109         160   SK Global co., Ltd
 9837      277         79         178   Powertel Ltd
17974      274         65          14   PT TELEKOMUNIKASI INDONESIA
  703      255        262         209   UUNET - Commercial IP service
 9800      246        386          66   CHINA UNICOM

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1504       6374         983   AT&T WorldNet Services
 4323     1164        706         227   Time Warner Telecom
  174     1117       5852        1021   Cogent Communications
  721     1081      21922         311   DLA Systems Automation Center
  701      998       8120         843   UUNET Technologies, Inc. 
 6197      943        389         478   BellSouth Network Solutions, 
 2386      902        514         674   AT&T Data Communications Serv
 1239      865       2851         610   Sprint 
18566      843        224          21   Covad Communications 
20115      644        506         324   Charter Communications 
  209      625       3457         493   Qwest 
 3356      577      10661         447   Level 3 Communications, LLC 
27364      554         44          18   Armstrong Cable Services 
 3602      553        125         107   Sprint Canada, Inc. 
 3561      537       2401         419   Savvis
22773      523       1352          27   Cox Communications, Inc.
 5668      495        115          23   CenturyTel Internet Holdings,
 6198      473        417         228   BellSouth Network Solutions, 
 7132      461       4949         395   SBC Internet Services
19262      452       1372         120   Verizon Global Networks 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      591       1978         478   UUNET - Commercial IP service
 3301      301       1081         287   TeliaNet Sweden
 3320      292       3232         240   Deutsche Telekom AG
 8220      263        474         259   COLT Telecommunications
  680      244       2040         240   DFN-IP service G-WiN
 8708      234        262         215   Romania Data Systems S.A.
 3246      228        476         221   Song Networks
 1257      198        713         176   SWIPnet Swedish IP Network
 9121      195        290          41   TTnet Autonomous System
 6746      184         50         160   Dynamic Network Technologies,
 5515      181        778         127   Sonera Solution Autonomous Sy
 3269      174       1574          69   TELECOM ITALIA
  786      173       1779         173   The JANET IP Service
 5400      167        289         141   BT Ignite European Backbone
 6830      157        669          33   UPC Distribution Services
 3300      155        184          90   AUCS Communications Services 
 8866      154         36           8   Bulgarian Telecommunication C
25186      142        145          99   France Telecom Transpac's Tra
 1273      138        174          96   Cable & Wireless Deutschland 
 8551      138        122          21   Bezeq International

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      297         18           7   NSS, S.A. 
11172      247         83          58   Servicios Alestra S.A de C.V 
 6147      196        118          21   Telefonica Del Peru 
11664      190         20          23   Keytech SA 
19632      183         14           5   Metropolis Intercom S.A. 
22047      172        128           7   VTR PUNTO NET S.A. 
14117      154         10           5   Telefonica del Sur S.A. 
 7303      145         69          16   Telecom Argentina Stet-France
11556      129         64           2   Cable-Wireless Panama 
 6505      121         89          85   Global One Communicaoes Ltda 
19169      121          8          25   Telconet 
10481      120         48           8   Prima S.A. 
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      265        708         222   The Internet Solution 
 5536      124          8          11   Internet Egypt Network
 8452      108         32           7   TEDATA
 2018       96        295          87   Tertiary Education Network 
15475       93         84           4   Nile Online
 2905       77        210          69   The Internetworking Company o
24835       58         34           7   RAYA Telecom - Egypt
 6713       51         54           8   Itissalat Al-MAGHRIB
 5713       38        149          33   Telkom SA Ltd 
 9129       38          3           4   UUNET Kenya
12455       36          6           3   Jambonet Autonomous system
15706       31          8           3   Sudatel Internet Exchange Aut
33774       27          4          18   AS Number for Telecom Algeria
15804       26          2           1   AS of The Way Out Internet So
16637       22         10          19   Johnnic e-Ventures 
21280       22          4           5   Swift Global Kenya Ltd.Is an 
 8524       21          1           6   AUCEGYPT Autonomous System
10798       21          1          12   Standard Bank of South Africa
23889       20          5           9   MAURITIUS TELECOM
15808       19          2           2   Communication Solutions Ltd i

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

  ASN   No of nets  Net Savings Description
 4323      1164         937      Time Warner Telecom
18566       843         822      Covad Communications 
  721      1081         770      DLA Systems Automation Center
 9583       779         767      Sify Limited
 4134       965         765      CHINANET-BACKBONE
 4755       708         644      Videsh Sanchar Nigam Ltd. Aut
27364       554         536      Armstrong Cable Services 
22773       523         496      Cox Communications, Inc.
 5668       495         472      CenturyTel Internet Holdings,
 6197       943         465      BellSouth Network Solutions, 
 7545       520         447      TPG Internet Pty Ltd
 3602       553         446      Sprint Canada, Inc. 
17676       465         366      Softbank BB Corp.
 6467       428         355      E.Spire Communications, Inc. 
19262       452         332      Verizon Global Networks 
11492       330         323      Cable One 
20115       644         320      Charter Communications 
 4766       604         317      Korea Telecom (KIX)
17488       319         311      Hathway IP Over Cable Interne
15270       335         308      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 
65000   PRIVATE       195.177.123.0/24     25408       West Call Ltd carrie
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
28605   UNALLOCATED   201.20.144.0/20       4230       Embratel 
64943   PRIVATE       202.41.14.0/24       24110       Security Mail Pty Lt
64942   PRIVATE       202.41.15.0/24       24110       Security Mail Pty Lt
24413   UNALLOCATED   202.46.32.0/19       17623       China Netcom Corp.
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        /8:17       /9:3       /10:8       /11:17      /12:78      
/13:173     /14:320     /15:626     /16:8508    /17:2727    /18:4662    
/19:10730   /20:11818   /21:9816    /22:13204   /23:14086   /24:92219   
/25:336     /26:296     /27:176     /28:48      /29:22      /30:61      
/31:3       /32:29      

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

  ASN   No of nets  Total ann.   Description
18566      828           843      Covad Communications 
 6197      772           943      BellSouth Network Solutions, 
 7018      712          1504      AT&T WorldNet Services
 2386      613           902      AT&T Data Communications Serv
 9583      605           779      Sify Limited
 4323      552          1164      Time Warner Telecom
27364      545           554      Armstrong Cable Services 
 4766      421           604      Korea Telecom (KIX)
 5668      403           495      CenturyTel Internet Holdings,
  702      368           591      UUNET - Commercial IP service
 1239      364           865      Sprint 
19916      363           369      OLM LLC 
 7011      349           404      Citizens Utilities 
 6198      346           473      BellSouth Network Solutions, 
11492      322           330      Cable One 
 6517      306           332      Yipes Communications, Inc. 
15270      305           335      PaeTec.net -a division of Pae
  701      284           998      UUNET Technologies, Inc. 
 6467      280           428      E.Spire Communications, Inc. 
18302      280           295      SK Global co., Ltd

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

   4:4         8:23       11:1        12:1572     13:1        15:9      
  16:2        17:3        18:3        20:21       24:1070     30:3      
  32:61       38:148      40:56       44:4        47:2        52:4      
  55:1        56:3        57:23       58:156      59:67       60:121    
  61:723      62:789      63:1891     64:2856     65:2065     66:2889   
  67:608      68:609      69:1210     70:178      71:15       72:370    
  80:608      81:561      82:465      83:297      84:234      85:306    
  86:106      87:10      128:153     129:169     130:94      131:294    
 132:36      133:1       134:145     135:43      136:146     137:65     
 138:164     139:61      140:420     141:105     142:145     143:138    
 144:218     145:34      146:293     147:117     148:300     149:181    
 150:107     151:69      152:112     153:92      154:5       155:149    
 156:80      157:112     158:164     159:171     160:85      161:73     
 162:222     163:116     164:188     165:194     166:155     167:245    
 168:438     169:142     170:315     171:8       190:1       192:5715   
 193:3274    194:2403    195:1563    196:645     198:3860    199:3301   
 200:4181    201:321     202:6070    203:6351    204:3782    205:2082   
 206:2466    207:2829    208:2032    209:3355    210:1665    211:806    
 212:1210    213:1331    214:294     215:39      216:3645    217:1084   
 218:217     219:138     220:455     221:267     222:125    

End of report




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