North American Network Operators Group

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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Oct 07 14:09:31 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 08 Oct, 2005

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

BGP routing table entries examined:                              171237
    Prefixes after maximum aggregation:                           97682
    Unique aggregates announced to Internet:                      82982
Total ASes present in the Internet Routing Table:                 20634
Origin-only ASes present in the Internet Routing Table:           17937
Origin ASes announcing only one prefix:                            8496
Transit ASes present in the Internet Routing Table:                2697
Transit-only ASes present in the Internet Routing Table:             75
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      25
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:                   1430221696
    Equivalent to 85 /8s, 63 /16s and 115 /24s
    Percentage of available address space announced:               38.6
    Percentage of allocated address space announced:               58.1
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       81512

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

Prefixes being announced by APNIC Region ASes:                    35553
    Total APNIC prefixes after maximum aggregation:               15686
Prefixes being announced from the APNIC address blocks:           33366
    Unique aggregates announced from the APNIC address blocks:    16621
APNIC Region origin ASes present in the Internet Routing Table:    2379
APNIC Region origin ASes announcing only one prefix:                697
APNIC Region transit ASes present in the Internet Routing Table:    360
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              202231424
    Equivalent to 12 /8s, 13 /16s and 206 /24s
    Percentage of available APNIC address space announced:         75.0

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:                     90978
    Total ARIN prefixes after maximum aggregation:                55344
Prefixes being announced from the ARIN address blocks:            71064
    Unique aggregates announced from the ARIN address blocks:     26396
ARIN Region origin ASes present in the Internet Routing Table:    10245
ARIN Region origin ASes announcing only one prefix:                3777
ARIN Region transit ASes present in the Internet Routing Table:     959
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          17
Number of ARIN addresses announced to Internet:               271633664
    Equivalent to 16 /8s, 48 /16s and 205 /24s
    Percentage of available ARIN address space announced:          67.5

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:                     33262
    Total RIPE prefixes after maximum aggregation:                22601
Prefixes being announced from the RIPE address blocks:            30275
    Unique aggregates announced from the RIPE address blocks:     20274
RIPE Region origin ASes present in the Internet Routing Table:     7163
RIPE Region origin ASes announcing only one prefix:                3776
RIPE Region transit ASes present in the Internet Routing Table:    1197
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          17
Number of RIPE addresses announced to Internet:               219641920
    Equivalent to 13 /8s, 23 /16s and 120 /24s
    Percentage of available RIPE address space announced:          65.5

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:                    9645
    Total LACNIC prefixes after maximum aggregation:               3229
Prefixes being announced from the LACNIC address blocks:           7986
    Unique aggregates announced from the LACNIC address blocks:    4709
LACNIC Region origin ASes present in the Internet Routing Table:    641
LACNIC Region origin ASes announcing only one prefix:               203
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:                        25
Number of LACNIC addresses announced to Internet:              22127616
    Equivalent to 1 /8s, 81 /16s and 164 /24s
    Percentage of available LACNIC address space announced:        33.0

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:                   1773
    Total AfriNIC prefixes after maximum aggregation:               822
Prefixes being announced from the AfriNIC address blocks:          1087
    Unique aggregates announced from the AfriNIC address blocks:    810
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:   19
Average AfriNIC Region AS path length visible:                      4.6
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2822912
    Equivalent to 0 /8s, 43 /16s and 19 /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      992       6172         209   CHINANET-BACKBONE
 9583      803         77          12   Sify Limited
 1221      754       1330         515   Telstra Pty Ltd
 4755      715        259          66   Videsh Sanchar Nigam Ltd. Aut
 4766      618       3927         290   Korea Telecom (KIX)
 7545      510        108          72   TPG Internet Pty Ltd
17676      470       6819         100   Softbank BB Corp.
 9443      392         87          78   Primus Telecommunications
 9498      346        211          56   BHARTI BT INTERNET LTD.
 2907      338       1763         315   SINET Japan
17488      336         20           9   Hathway IP Over Cable Interne
 9929      330        224          46   China Netcom Corp.
17557      328         23         160   Pakistan Telecom
 4802      319         70         160   Wantree Development
 7474      319        257         221   SingTel Optus Pty Ltd
18302      292        109         162   SK Global co., Ltd
 9837      273         79         174   Powertel Ltd
17974      272         65          14   PT TELEKOMUNIKASI INDONESIA
18101      261         68          18   Reliance Infocom Ltd Internet
 9800      253        394          66   CHINA UNICOM

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1518       6361         989   AT&T WorldNet Services
 4323     1180        705         228   Time Warner Telecom
  721     1076      21938         309   DLA Systems Automation Center
  174     1059       5848         993   Cogent Communications
  701      997       8105         836   UUNET Technologies, Inc. 
 6197      946        399         489   BellSouth Network Solutions, 
 2386      927        513         688   AT&T Data Communications Serv
 1239      860       2851         604   Sprint 
18566      858        240           7   Covad Communications 
  209      632       3569         499   Qwest 
20115      625        510         329   Charter Communications 
 3602      561        131         109   Sprint Canada, Inc. 
 3356      548      10656         422   Level 3 Communications, LLC 
 3561      546       2410         418   Savvis
22773      544       1356          31   Cox Communications, Inc.
 5668      477        147          24   CenturyTel Internet Holdings,
 6198      475        417         230   BellSouth Network Solutions, 
19262      472       1419         123   Verizon Global Networks 
 7132      468       5042         399   SBC Internet Services
  852      436       1092         383   Telus Advanced Communications

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      609       1993         482   UUNET - Commercial IP service
 3301      303       1081         289   TeliaNet Sweden
 3320      286       3230         239   Deutsche Telekom AG
 8220      268        475         263   COLT Telecommunications
 8708      245        274         223   Romania Data Systems S.A.
  680      244       2040         240   DFN-IP service G-WiN
 3246      226        474         219   Song Networks
 1257      194        712         172   SWIPnet Swedish IP Network
 6746      189         50         164   Dynamic Network Technologies,
 5515      181        777         127   Sonera Solution Autonomous Sy
 3269      178       1638          70   TELECOM ITALIA
  786      174       1795         174   The JANET IP Service
 5400      169        289         142   BT Ignite European Backbone
 8866      160         37           9   Bulgarian Telecommunication C
 6830      158        669          33   UPC Distribution Services
 3300      156        185          91   AUCS Communications Services 
25186      152        227         107   France Telecom Transpac's Tra
 3215      140       1205          82   France Telecom Transpac
24863      139         37           6   LINKdotNET AS number
 1273      137        177          95   Cable & Wireless Deutschland 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      400        650         170   UniNet S.A. de C.V. 
16814      297         18           7   NSS, S.A. 
11172      278         85          65   Servicios Alestra S.A de C.V 
11664      206         22          24   Keytech SA 
19632      195         14           5   Metropolis Intercom S.A. 
 6147      190        116          23   Telefonica Del Peru 
22047      170        128           7   VTR PUNTO NET S.A. 
14117      155         10           5   Telefonica del Sur S.A. 
 7303      145         68          17   Telecom Argentina Stet-France
11556      132         64           2   Cable-Wireless Panama 
 6505      121         89          85   Global One Communicaoes Ltda 
10481      121         48           8   Prima S.A. 
19169      121          8          25   Telconet 
13999      119         52           9   Mega Cable S.A. de C.V. 
 6503      113        148          74   AVANTEL, S.A. 
18822      112          7          13   TELEFONICA MANQUEHUE 
21826      107         13          16   INTERCABLE 
 5639      103         12           9   Telecommunications Services o
11311       99          8          10   Sinectis S.A. 
23216       88         23          12   RAMtelecom Telecomunicaciones

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      268        708         226   The Internet Solution 
 5536      123          8          12   Internet Egypt Network
 8452      115         40           8   TEDATA
 2018       95        295          86   Tertiary Education Network 
15475       83         84           4   Nile Online
 2905       79        211          71   The Internetworking Company o
 6713       71         71          10   Itissalat Al-MAGHRIB
20928       61         16           2   Noor Advanced Technologies AS
24835       58         34           7   RAYA Telecom - Egypt
 5713       38        149          33   Telkom SA Ltd 
12455       35          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
23889       21          5           9   MAURITIUS TELECOM
21280       20          4           4   Swift Global Kenya Ltd.Is an 
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      1180         952      Time Warner Telecom
18566       858         851      Covad Communications 
 9583       803         791      Sify Limited
 4134       992         783      CHINANET-BACKBONE
  721      1076         767      DLA Systems Automation Center
 4755       715         649      Videsh Sanchar Nigam Ltd. Aut
22773       544         513      Cox Communications, Inc.
 6197       946         457      BellSouth Network Solutions, 
 5668       477         453      CenturyTel Internet Holdings,
 3602       561         452      Sprint Canada, Inc. 
 7545       510         438      TPG Internet Pty Ltd
17676       470         370      Softbank BB Corp.
 6467       401         353      E.Spire Communications, Inc. 
19262       472         349      Verizon Global Networks 
11492       341         332      Cable One 
 4766       618         328      Korea Telecom (KIX)
17488       336         327      Hathway IP Over Cable Interne
15270       346         318      PaeTec.net -a division of Pae
 9443       392         314      Primus Telecommunications
13609       332         302      Choice One Communications Inc

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

Bad AS  Designation  Network              Transit AS  Description
65003   PRIVATE       57.250.244.0/24      13879       SITA-EQUANT 
64900   PRIVATE       64.116.137.0/24      17399       Comsat Venezuela, CO
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 
64512   PRIVATE       170.51.242.0/24      19037       CTI Compania de Tele
65111   PRIVATE       194.165.131.0/24      8376       GO-JOR Autonomous Sy
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.
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      
/13:180     /14:327     /15:641     /16:8533    /17:2820    /18:4733    
/19:10810   /20:11872   /21:9869    /22:13224   /23:14192   /24:93008   
/25:324     /26:281     /27:177     /28:36      /29:11      /30:38      
/31:3       /32:31      

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

  ASN   No of nets  Total ann.   Description
18566      842           858      Covad Communications 
 6197      773           946      BellSouth Network Solutions, 
 7018      738          1518      AT&T WorldNet Services
 2386      639           927      AT&T Data Communications Serv
 9583      626           803      Sify Limited
 4323      563          1180      Time Warner Telecom
 4766      426           618      Korea Telecom (KIX)
  702      385           609      UUNET - Commercial IP service
 5668      382           477      CenturyTel Internet Holdings,
 1239      368           860      Sprint 
19916      363           369      OLM LLC 
 6198      348           475      BellSouth Network Solutions, 
11492      333           341      Cable One 
 7011      323           380      Citizens Utilities 
 6517      317           343      Yipes Communications, Inc. 
15270      316           346      PaeTec.net -a division of Pae
13609      289           332      Choice One Communications Inc
  701      284           997      UUNET Technologies, Inc. 
18302      277           292      SK Global co., Ltd
22773      275           544      Cox Communications, Inc.

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

   4:3         8:25       12:1604     13:1        15:10       16:3      
  17:3        18:3        20:27       24:560      30:3        32:67     
  38:162      40:54       44:3        47:2        52:4        55:1      
  56:3        57:39       58:93       59:69       60:139      61:755    
  62:762      63:1889     64:2905     65:2081     66:2963     67:628    
  68:657      69:1239     70:207      71:27       72:398      80:633    
  81:581      82:494      83:304      84:272      85:336      86:129    
  87:59      125:11      128:161     129:168     130:96      131:296    
 132:34      133:1       134:146     135:43      136:160     137:66     
 138:165     139:62      140:460     141:141     142:148     143:142    
 144:219     145:34      146:301     147:112     148:277     149:188    
 150:108     151:73      152:113     153:93      154:5       155:139    
 156:80      157:112     158:161     159:172     160:87      161:75     
 162:236     163:146     164:191     165:175     166:152     167:258    
 168:441     169:143     170:306     171:8       190:1       192:5728   
 193:3313    194:2414    195:1564    196:677     198:3887    199:3229   
 200:4228    201:353     202:6115    203:6456    204:3816    205:2046   
 206:2444    207:2853    208:2030    209:3406    210:1682    211:817    
 212:1205    213:1382    214:303     215:39      216:3712    217:1139   
 218:220     219:131     220:505     221:286     222:125    

End of report