Weekly Routing Table Report

Routing Table Analysis cscora at apnic.net
Fri Feb 11 18:06:35 UTC 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 at lists.apnic.net

If you have any comments please contact Philip Smith <pfs at cisco.com>.

Routing Table Report   04:00 +10GMT Sat 12 Feb, 2005

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

BGP routing table entries examined:                              155599
    Prefixes after maximum aggregation:                           90769
    Unique aggregates announced to Internet:                      74551
Total ASes present in the Internet Routing Table:                 18969
Origin-only ASes present in the Internet Routing Table:           16484
Origin ASes announcing only one prefix:                            7738
Transit ASes present in the Internet Routing Table:                2485
Transit-only ASes present in the Internet Routing Table:             80
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      22
Prefixes from unregistered ASNs in the Routing Table:                18
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             22
Number of addresses announced to Internet:                   1374625740
    Equivalent to 81 /8s, 239 /16s and 31 /24s
    Percentage of available address space announced:               37.1
    Percentage of allocated address space announced:               58.6
    Percentage of available address space allocated:               63.2
Total number of prefixes smaller than registry allocations:       72464

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

Prefixes being announced by APNIC Region ASes:                    30978
    Total APNIC prefixes after maximum aggregation:               14936
Prefixes being announced from the APNIC address blocks:           29027
    Unique aggregates announced from the APNIC address blocks:    14666
APNIC Region origin ASes present in the Internet Routing Table:    2204
APNIC Region origin ASes announcing only one prefix:                648
APNIC Region transit ASes present in the Internet Routing Table:    326
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              173936896
    Equivalent to 10 /8s, 94 /16s and 17 /24s
    Percentage of available APNIC address space announced:         64.5

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
                       23552-24575
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:                     87104
    Total ARIN prefixes after maximum aggregation:                52392
Prefixes being announced from the ARIN address blocks:            66324
    Unique aggregates announced from the ARIN address blocks:     24080
ARIN Region origin ASes present in the Internet Routing Table:     9868
ARIN Region origin ASes announcing only one prefix:                3594
ARIN Region transit ASes present in the Internet Routing Table:     957
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               240880896
    Equivalent to 14 /8s, 91 /16s and 141 /24s
    Percentage of available ARIN address space announced:          71.8

ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
                       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
ARIN Address Blocks    24/8, 63/8, 64/6, 68/7, 70/7, 72/8, 198/7, 204/6,
                       208/7 and 216/8

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                     29389
    Total RIPE prefixes after maximum aggregation:                20318
Prefixes being announced from the RIPE address blocks:            26341
    Unique aggregates announced from the RIPE address blocks:     17498
RIPE Region origin ASes present in the Internet Routing Table:     6307
RIPE Region origin ASes announcing only one prefix:                3344
RIPE Region transit ASes present in the Internet Routing Table:    1074
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          22
Number of RIPE addresses announced to Internet:               187806784
    Equivalent to 11 /8s, 49 /16s and 180 /24s
    Percentage of available RIPE address space announced:          65.8

RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
                       2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-34815
RIPE Address Blocks    62/8, 80/5, 88/8, 188/8, 193/8, 194/7, 212/7
                       and 217/8

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                    6790
    Total LACNIC prefixes after maximum aggregation:               2418
Prefixes being announced from the LACNIC address blocks:           6684
    Unique aggregates announced from the LACNIC address blocks:    3972
LACNIC Region origin ASes present in the Internet Routing Table:    420
LACNIC Region origin ASes announcing only one prefix:               128
LACNIC Region transit ASes present in the Internet Routing Table:    82
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        16
Number of LACNIC addresses announced to Internet:              17393664
    Equivalent to 1 /8s, 9 /16s and 104 /24s
    Percentage of available LACNIC address space announced:        51.8

LACNIC AS Blocks       26592-26623, 27648-28671
LACNIC Address Blocks  200/7

Emerging AfriNIC Region Analysis Summary
----------------------------------------

Prefixes being announced by AfriNIC Region ASes:                   1320
    Total AfriNIC prefixes after maximum aggregation:               705
Prefixes being announced from the AfriNIC address blocks:           890
    Unique aggregates announced from the AfriNIC address blocks:    714
AfriNIC Region origin ASes present in the Internet Routing Table:    95
AfriNIC Region origin ASes announcing only one prefix:               24
AfriNIC Region transit ASes present in the Internet Routing Table:   13
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2171136
    Equivalent to 0 /8s, 33 /16s and 33 /24s
    Percentage of available AfriNIC address space announced:       12.9

AfriNIC AS Blocks      <none>
AfriNIC Address Blocks 196/8

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4134      883       4688         172   Data Communications Bureau
 1221      786       1184         561   Telstra Pty Ltd
 4766      586       3414         281   Korea Internet Exchange for "
 9583      586         48          11   Satyam Infoway Ltd.,
 4755      456        241         101   Videsh Sanchar Nigam Ltd. Aut
 7545      426         86          69   TPG Internet Pty Ltd
17676      396       5948          64   XTAGE CORPORATION
 9443      371         77          79   Primus Telecommunications
 9929      350        164          35   China Netcom Corp.
 2907      347       1838         322   SINET Japan
17557      326         24         149   Pakistan Telecom
10036      294         27         270   C&M Communication Co. Ltd.
 7474      286        299         208   Optus Communications Pty Ltd
 2764      271        238         217   connect.com.au pty ltd
  703      269        339         211   UUNET
 9800      237        383          75   CHINA UNICOM
 4808      236        170         128   CHINANET core WAN North
 9498      234         81          54   BHARTI BT INTERNET LTD.
17974      231         63          12   PT TELEKOMUNIKASI INDONESIA
 4802      230         28         139   Wantree Development

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1459       6602         974   AT&T WorldNet Services
  721     1154      21851         317   DLA Systems Automation Center
  701     1034       8309         881   UUNET Technologies, Inc. 
 4323     1032        672         221   Time Warner Telecom
 1239      951       2880         627   Sprint 
 6197      860        378         402   BellSouth Network Solutions, 
 2386      827        511         608   AT&T Data Communications Serv
18566      770        208           6   Covad Communications 
  209      647       3467         498   Qwest 
 3356      596      10868         445   Level 3 Communications, LLC 
 3561      584       2370         416   Cable & Wireless USA 
20115      578        481         304   Charter Communications 
  852      525       1126         399   Telus Advanced Communications
 6478      496        822          97   AT&T Worldnet Services 
 3602      492        120          91   Sprint Canada, Inc. 
22773      469       1090          24   Cox Communications, Inc. Atla
27364      468         44          18   Armstrong Cable Services 
 6198      458        472         204   BellSouth Network Solutions, 
 5668      441         87          17   Century Telephone 
 7132      441       8411         381   SBC Internet Services

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      614       2020         506   UUNET - Commercial IP service
 3320      296       2992         230   Deutsche Telekom AG
 3301      290       1112         278   TeliaNet Sweden
 8220      277        466         271   COLT Internet - International
  680      253       2041         239   DFN-IP service G-WiN
 3246      224        475         219   Song Networks
13083      217         51           8   Mannesmann Datenverarbeitung 
 8708      216        120         196   Romania Data Systems S.A.
 1257      205        708         171   SWIPnet Swedish IP Network
 3215      200       1033          78   France Telecom Transpac
 5515      187        842         135   Sonera Solution Autonomous Sy
 6746      179         47         143   Dynamic Network Technologies,
  786      176       1794         176   The JANET IP Service
 8866      170         19          20   Bulgarian Telecommunication C
 3300      168        184          84   AUCS Communications Services 
  719      163        322         105   LANLINK autonomous system
 3269      163       1424          72   TELECOM ITALIA
25186      141        138          99   France Telecom Transpac's Tra
 5400      140        219         124   BT Ignite European Backbone
 9051      128          8          33   INCONET Autonomous System

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      361        140          70   ImpSat
 8151      339        501         143   UniNet S.A. de C.V. 
16814      233         14           6   NSS, S.A. 
11172      219        101          54   Servicios Alestra S.A de C.V 
 6147      170        100          22   Telefonica Del Peru 
 7303      149         68          22   Telecom Argentina Stet-France
11664      149         19          24   Keytech SA 
 6505      134         90          91   Global One Communicaoes Ltda 
14117      119          7           5   Telefonica del Sur S.A. 
 6503      116        146          79   AVANTEL, S.A. 
11992      107          9          31   Integrated Systems 
11556       97         48           3   Cable-Wireless Panama 
13999       90         52           9   Mega Cable S.A. de C.V. 
14420       87          6          42   ANDINATEL S.A. 
11311       86          8          22   Sinectis S.A. 
 6535       85          7          23   Chilesat Servicios  Empresari
10481       82         32           7   Prima S.A. 
 5639       81          8           8   Telecommunications Services o
 4270       79         18           9   Red de Interconexion Universi
15311       78         25          37   Telefonica Empresas 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      268        636         226   The Internet Solution 
 5536      113         15          17   Internet Egypt Network
 2018       90        295          87   Tertiary Education Network 
 2905       85        267          77   The Internetworking Company o
20928       84         16           2   Noor Advanced Technologies AS
24835       56         34           6   RAYA Telecom - Egypt
 8452       38         20           5   TEDATA
 6713       35         54           9   Itissalat Al-MAGHRIB
 9129       33          3           2   UUNET Kenya
 5713       27        141          24   Telkom SA Ltd 
12455       27          7           4   Jambonet Autonomous system
 8524       22          1           4   AUCEGYPT Autonomous System
16637       22         10          19   Johnnic e-Ventures 
10798       18          1          12   Standard Bank of South Africa
12258       18          3          12   Vodacom Internet Company 
21280       16          2           3   Swift Global Kenya Ltd.Is an 
15706       15          4           2   Sudatel Internet Exchange Aut
21491       15          1           3   UTL On-line is RF broadband I
15808       14          1           1   Communication Solutions Ltd i
17148       13          1           7   First National Bank 

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

  ASN   No of nets  Net Savings Description
  721      1154         837      DLA Systems Automation Center
 4323      1032         811      Time Warner Telecom
18566       770         764      Covad Communications 
 4134       883         711      Data Communications Bureau
 9583       586         575      Satyam Infoway Ltd.,
 6197       860         458      BellSouth Network Solutions, 
27364       468         450      Armstrong Cable Services 
22773       469         445      Cox Communications, Inc. Atla
 5668       441         424      Century Telephone 
 3602       492         401      Sprint Canada, Inc. 
 6478       496         399      AT&T Worldnet Services 
 7545       426         357      TPG Internet Pty Ltd
 4755       456         355      Videsh Sanchar Nigam Ltd. Aut
22909       418         339      Comcast Cable Corporation 
 6467       365         334      E.Spire Communications, Inc. 
17676       396         332      XTAGE CORPORATION
 1239       951         324      Sprint 
 9929       350         315      China Netcom Corp.
 4766       586         305      Korea Internet Exchange for "
 9443       371         292      Primus Telecommunications

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

Bad AS  Designation  Network              Transit AS  Description
64826   PRIVATE       64.200.250.0/23       7911       Williams Communicati
40439   UNALLOCATED   66.194.101.0/24      30439       Memphis Daily News 
64513   PRIVATE       149.117.96.0/24        577       Bell Advanced Commun
26422   UNALLOCATED   196.46.184.0/22       3741       The Internet Solutio
64512   PRIVATE       199.213.17.0/25      15296       Netera Alliance Inc.
64512   PRIVATE       199.213.17.128/25    15296       Netera Alliance Inc.
64512   PRIVATE       199.216.97.0/28      15296       Netera Alliance Inc.
64512   PRIVATE       199.216.148.0/28     15296       Netera Alliance Inc.
65004   PRIVATE       200.0.113.0/24       28477       *
65004   PRIVATE       200.4.0.0/24         28477       *
65004   PRIVATE       200.4.1.0/24         28477       *
65004   PRIVATE       200.4.2.0/24         28477       *
65004   PRIVATE       200.4.3.0/24         28477       *
65004   PRIVATE       200.4.4.0/24         28477       *
65004   PRIVATE       200.4.5.0/24         28477       *
65004   PRIVATE       200.4.6.0/24         28477       *
65529   PRIVATE       216.21.199.0/24      14697       VDot.Net 
65529   PRIVATE       216.152.237.0/24     14697       VDot.Net 

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
172.212.0.0/16        1668     GNN Hosting Service 
172.213.0.0/16        1668     GNN Hosting Service 
172.214.0.0/16        1668     GNN Hosting Service 
172.215.0.0/16        1668     GNN Hosting Service 
172.216.0.0/16        1668     GNN Hosting Service 
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 
192.83.16.0/20        5515     Sonera Solution Autonomous Sy
192.83.32.0/19        5515     Sonera Solution Autonomous Sy
192.83.96.0/22        5515     Sonera Solution Autonomous Sy
192.83.100.0/24       5515     Sonera Solution Autonomous Sy
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
192.136.79.0/24        719     LANLINK autonomous system
192.172.0.0/19         721     DLA Systems Automation Center
192.172.11.0/24        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        /8:19       /9:3       /10:7       /11:14      /12:62      
/13:146     /14:311     /15:566     /16:8304    /17:2405    /18:4090    
/19:10079   /20:10700   /21:8446    /22:11718   /23:12917   /24:84952   
/25:298     /26:256     /27:112     /28:49      /29:22      /30:82      
/31:0       /32:41      

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

  ASN   No of nets  Total ann.   Description
18566      755           770      Covad Communications 
 6197      705           860      BellSouth Network Solutions, 
 7018      630          1459      AT&T WorldNet Services
 2386      591           827      AT&T Data Communications Serv
 4323      478          1032      Time Warner Telecom
27364      453           468      Armstrong Cable Services 
 9583      412           586      Satyam Infoway Ltd.,
 4766      399           586      Korea Internet Exchange for "
 5668      376           441      Century Telephone 
  702      373           614      UUNET - Commercial IP service
 1239      369           951      Sprint 
 6198      331           458      BellSouth Network Solutions, 
10036      294           294      C&M Communication Co. Ltd.
 6517      285           307      Yipes Communications, Inc. 
 6467      275           365      E.Spire Communications, Inc. 
 9929      275           350      China Netcom Corp.
11456      263           310      Carolina Online, Inc. 
13609      256           305      Choice One Communications Inc
25844      245           245      Skadden, Arps, Slate, Meagher
  701      244          1034      UUNET Technologies, Inc. 

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

   4:4         8:9        12:1486     13:1        15:6        16:2      
  17:3        18:4        20:4        24:739      32:68       33:3      
  38:94       40:55       44:3        47:2        52:3        55:2      
  56:3        57:21       59:2        60:16       61:688      62:505    
  63:1865     64:2590     65:2084     66:2726     67:499      68:500    
  69:907      70:64       71:2        72:82       80:554      81:490    
  82:349      83:280      84:129      85:104     128:139     129:166    
 130:92      131:195     132:37      133:1       134:142     135:30     
 136:213     137:66      138:179     139:50      140:195     141:101    
 142:140     143:123     144:252     145:45      146:282     147:99     
 148:262     149:163     150:95      151:62      152:110     153:73     
 154:2       155:140     156:69      157:78      158:149     159:164    
 160:67      161:59      162:417     163:84      164:213     165:157    
 166:131     167:226     168:389     169:132     170:314     171:9      
 192:5687    193:3060    194:2257    195:1570    196:621     198:3858   
 199:3285    200:3932    201:53      202:5160    203:5979    204:3627   
 205:2021    206:2314    207:2667    208:2095    209:3096    210:1566   
 211:780     212:1148    213:1258    214:239     215:31      216:3670   
 217:1100    218:189     219:117     220:354     221:82      222:76     


End of report



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