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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Oct 29 14:07:35 2004

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 30 Oct, 2004

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

BGP routing table entries examined:                              149062
    Prefixes after maximum aggregation:                           88324
    Unique aggregates announced to Internet:                      71592
Total ASes present in the Internet Routing Table:                 18337
Origin-only ASes present in the Internet Routing Table:           15924
Origin ASes announcing only one prefix:                            7462
Transit ASes present in the Internet Routing Table:                2413
Transit-only ASes present in the Internet Routing Table:             81
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:                 9
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             15
Number of addresses announced to Internet:                   1346803852
    Equivalent to 80 /8s, 70 /16s and 152 /24s
    Percentage of available address space announced:               36.3
    Percentage of allocated address space announced:               58.7
    Percentage of available address space allocated:               61.9
Total number of prefixes smaller than registry allocations:       68679

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

Prefixes being announced by APNIC Region ASes:                    28920
    Total APNIC prefixes after maximum aggregation:               14374
Prefixes being announced from the APNIC address blocks:           27079
    Unique aggregates announced from the APNIC address blocks:    14281
APNIC Region origin ASes present in the Internet Routing Table:    2160
APNIC Region origin ASes announcing only one prefix:                651
APNIC Region transit ASes present in the Internet Routing Table:    336
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              165552000
    Equivalent to 9 /8s, 222 /16s and 31 /24s
    Percentage of available APNIC address space announced:         75.5

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
                       23552-24575
APNIC Address Blocks   58/7, 60/7, 202/7, 210/7, 218/7, 220/7 and 222/8

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                     84508
    Total ARIN prefixes after maximum aggregation:                51481
Prefixes being announced from the ARIN address blocks:            64697
    Unique aggregates announced from the ARIN address blocks:     23297
ARIN Region origin ASes present in the Internet Routing Table:     9639
ARIN Region origin ASes announcing only one prefix:                3468
ARIN Region transit ASes present in the Internet Routing Table:     932
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               234310400
    Equivalent to 13 /8s, 247 /16s and 75 /24s
    Percentage of available ARIN address space announced:          69.8

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,
                       26624-27647,29695-30719, 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:                     27855
    Total RIPE prefixes after maximum aggregation:                19406
Prefixes being announced from the RIPE address blocks:            24718
    Unique aggregates announced from the RIPE address blocks:     16206
RIPE Region origin ASes present in the Internet Routing Table:     5967
RIPE Region origin ASes announcing only one prefix:                3209
RIPE Region transit ASes present in the Internet Routing Table:    1020
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          25
Number of RIPE addresses announced to Internet:               174892160
    Equivalent to 10 /8s, 108 /16s and 164 /24s
    Percentage of available RIPE address space announced:          61.3

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:                    6541
    Total LACNIC prefixes after maximum aggregation:               2360
Prefixes being announced from the LACNIC address blocks:           6360
    Unique aggregates announced from the LACNIC address blocks:    3827
LACNIC Region origin ASes present in the Internet Routing Table:    399
LACNIC Region origin ASes announcing only one prefix:               114
LACNIC Region transit ASes present in the Internet Routing Table:    77
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              16371968
    Equivalent to 0 /8s, 249 /16s and 209 /24s
    Percentage of available LACNIC address space announced:        48.8

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

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

Prefixes being announced by AfriNIC Region ASes:                   1233
    Total AfriNIC prefixes after maximum aggregation:               703
Prefixes being announced from the AfriNIC address blocks:           863
    Unique aggregates announced from the AfriNIC address blocks:    672
AfriNIC Region origin ASes present in the Internet Routing Table:    94
AfriNIC Region origin ASes announcing only one prefix:               20
AfriNIC Region transit ASes present in the Internet Routing Table:   12
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:              2069760
    Equivalent to 0 /8s, 31 /16s and 149 /24s
    Percentage of available AfriNIC address space announced:       12.3

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      856       4407         163   Data Communications Bureau
 1221      804       1183         578   Telstra Pty Ltd
 4766      542       3407         266   Korea Internet Exchange for "
 9583      539         41         105   Satyam Infoway Ltd.,
 4755      369        133          53   Videsh Sanchar Nigam Ltd. Aut
17676      369       5516          54   XTAGE CORPORATION
 2907      354       1857         328   SINET Japan
 9443      353         69          79   Primus Telecommunications
 9929      344        161          33   China Netcom Corp.
17557      320         23         160   Pakistan Telecom
  703      316        346         244   UUNET
 2764      283        273         231   connect.com.au pty ltd
 7474      263        268         196   Optus Communications Pty Ltd
 4802      234         28         142   Wantree Development
 9942      234         72         125   COMindico Australia
 9498      231         82          50   BHARTI BT INTERNET LTD.
 9800      231        380          71   CHINA UNICOM
 7563      225         48         162   Korea Internet Infrastructure
10036      209         19         190   C&M Communication Co. Ltd.
 4814      206        232           6   China Telecom (Group)

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1433       6698         996   AT&T WorldNet Services
  701     1211       8415         891   UUNET Technologies, Inc. 
 1239      928       2882         617   Sprint 
 2386      845        530         608   AT&T Data Communications Serv
 6197      809        378         350   BellSouth Network Solutions, 
 4323      795        653         216   Time Warner Telecom
18566      750        208           6   Covad Communications 
  721      718      21015         296   DLA Systems Automation Center
  209      644       3452         506   Qwest 
 3356      640      10955         445   Level 3 Communications, LLC 
20115      568        430         305   Charter Communications 
 3561      560       2417         424   Cable & Wireless USA 
  852      514       1142         398   Telus Advanced Communications
 7843      497        709          98   Adelphia Corp. 
 7132      449       8288         376   SBC Internet Services
  705      436        163         276   UUNET Technologies, Inc. 
 6198      435        377         201   BellSouth Network Solutions, 
 6478      420        730          95   AT&T Worldnet Services 
27364      413         36          19   Armstrong Cable Services 
22909      408        843          57   Comcast Cable Corporation 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      633       2011         523   UUNET - Commercial IP service
 3320      296       2485         233   Deutsche Telekom AG
 8220      280        461         266   COLT Internet - International
 3301      278       1100         268   TeliaNet Sweden
21502      261         40           3   NUMERICABLE is a cabled netwo
  680      251       2025         239   DFN-IP service G-WiN
 3246      219        477         215   Song Networks
13083      217         51           8   Mannesmann Datenverarbeitung 
 1257      208        743         180   SWIPnet Swedish IP Network
 8708      205        114         183   Romania Data Systems S.A.
 5515      193        842         141   Sonera Solution Autonomous Sy
  786      176       1794         176   The JANET IP Service
 6746      159         30         128   Dynamic Network Technologies,
 3215      158        940          77   France Telecom Transpac
  719      157        288         102   LANLINK autonomous system
 8866      156         20           7   Bulgarian Telecommunication C
 3269      149       1259          67   TELECOM ITALIA
25186      149        154         105   France Telecom Transpac's Tra
 5400      148        207         119   BT Ignite European Backbone
 3303      147        610         129   Swisscom Ltd

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      346        139          69   ImpSat
 8151      308        455         134   UniNet S.A. de C.V. 
16814      211         13           7   NSS, S.A. 
11172      208        100          55   Servicios Alestra S.A de C.V 
 6147      182         94          20   Telefonica Del Peru 
11664      164         12          35   Keytech SA 
 6505      137         90          94   Global One Communicaoes Ltda 
 7303      133         60          24   Telecom Argentina Stet-France
 6503      123        164          84   AVANTEL, S.A. 
11992      101          9          31   Integrated Systems 
14117       98          6           4   Telefonica del Sur S.A. 
11556       96         48           2   Cable-Wireless Panama 
 6535       86          7          20   Chilesat Servicios  Empresari
11311       84          8          24   Sinectis S.A. 
10481       81         32           7   Prima S.A. 
 4270       80         18           9   Red de Interconexion Universi
14420       80          5          33   ANDINATEL S.A. 
14522       77          5           9   SatNet S.A. 
15311       77         23          37   Telefonica Empresas 
 5639       75          8           8   Telecommunications Services o

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      253        631         220   The Internet Solution 
 2905      114        276          83   The Internetworking Company o
 5536      113         16           4   Internet Egypt Network
 2018      101        297          97   Tertiary Education Network 
20928       52         16           1   Noor Advanced Technologies AS
 9129       33          3           4   UUNET Kenya
24835       33         34           7   RAYA Telecom - Egypt
 6713       31         42          10   Itissalat Al-MAGHRIB
 5713       26        125          24   Telkom SA Ltd 
 8524       25          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 
12455       17          4           2   Jambonet Autonomous system
 8346       15          7          14   SONATEL-AS Autonomous System
15706       15          4           2   Sudatel Internet Exchange Aut
21280       14          2           3   Swift Global Kenya Ltd.Is an 
15808       13          1           2   Communication Solutions Ltd i
17148       13          1           7   First National Bank 
21491       13          1           3   UTL On-line is RF broadband I

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

  ASN   No of nets  Net Savings Description
18566       750         744      Covad Communications 
 4134       856         693      Data Communications Bureau
 4323       795         579      Time Warner Telecom
 6197       809         459      BellSouth Network Solutions, 
 9583       539         434      Satyam Infoway Ltd.,
  721       718         422      DLA Systems Automation Center
 7843       497         399      Adelphia Corp. 
27364       413         394      Armstrong Cable Services 
 5668       407         389      Century Telephone 
22773       400         382      Cox Communications, Inc. Atla
 6467       403         372      E.Spire Communications, Inc. 
22909       408         351      Comcast Cable Corporation 
 6478       420         325      AT&T Worldnet Services 
  701      1211         320      UUNET Technologies, Inc. 
 4755       369         316      Videsh Sanchar Nigam Ltd. Aut
17676       369         315      XTAGE CORPORATION
 1239       928         311      Sprint 
 9929       344         311      China Netcom Corp.
 4355       392         293      EarthLink, Inc. 
 6140       346         277      ImpSat

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

Bad AS  Designation  Network              Transit AS  Description
64512   PRIVATE       62.58.1.0/27         13127       AS for the Trans-Eur
65006   PRIVATE       84.18.32.0/19        33831       *
65217   PRIVATE       192.102.236.0/24       217       University of Minnes
 1877   UNALLOCATED   192.108.199.0/24      1876       Southern Methodist U
26422   UNALLOCATED   196.14.164.0/24       3741       The Internet Solutio
26422   UNALLOCATED   196.23.168.0/24       3741       The Internet Solutio
26422   UNALLOCATED   196.34.165.0/24       3741       The Internet Solutio
26422   UNALLOCATED   196.38.226.0/24       3741       The Internet Solutio
65000   PRIVATE       217.68.56.0/22       29263       HAAGnet, municipalit

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
192.44.0.0/19          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

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       /10:6       /11:15      /12:61      
/13:137     /14:312     /15:555     /16:8107    /17:2273    /18:3902    
/19:9762    /20:10381   /21:7938    /22:10967   /23:12668   /24:81178   
/25:238     /26:225     /27:119     /28:52      /29:32      /30:82      
/31:0       /32:30      

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

  ASN   No of nets  Total ann.   Description
18566      735           750      Covad Communications 
 6197      658           809      BellSouth Network Solutions, 
 2386      612           845      AT&T Data Communications Serv
 7018      576          1433      AT&T WorldNet Services
27364      397           413      Armstrong Cable Services 
  702      386           633      UUNET - Commercial IP service
 9583      376           539      Satyam Infoway Ltd.,
 1239      369           928      Sprint 
 4766      362           542      Korea Internet Exchange for "
 5668      352           407      Century Telephone 
  701      348          1211      UUNET Technologies, Inc. 
 6198      316           435      BellSouth Network Solutions, 
 6467      302           403      E.Spire Communications, Inc. 
 6517      282           306      Yipes Communications, Inc. 
20115      277           568      Charter Communications 
 9929      275           344      China Netcom Corp.
13609      266           309      Choice One Communications Inc
21502      258           261      NUMERICABLE is a cabled netwo
 4323      256           795      Time Warner Telecom
25844      245           245      Skadden, Arps, Slate, Meagher

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

   4:4         8:11       12:1436     13:1        15:5        16:2      
  17:3        20:5        24:746      32:67       33:2        38:80     
  40:55       44:3        47:2        52:3        55:1        56:3      
  57:20       60:3        61:603      62:497      63:1836     64:2450   
  65:2077     66:2461     67:442      68:537      69:748      70:33     
  72:2        80:504      81:543      82:304      83:193      84:49     
 128:124     129:165     130:82      131:184     132:34      134:185    
 135:19      136:187     137:56      138:182     139:38      140:185    
 141:108     142:123     143:69      144:159     145:42      146:294    
 147:94      148:328     149:110     150:94      151:65      152:140    
 153:68      154:2       155:126     156:58      157:67      158:131    
 159:163     160:61      161:71      162:377     163:79      164:215    
 165:158     166:119     167:221     168:342     169:121     170:294    
 171:9       192:5561    193:2917    194:2165    195:1506    196:593    
 198:3678    199:3292    200:3805    201:23      202:4923    203:5756   
 204:3467    205:2085    206:2251    207:2553    208:2133    209:3007   
 210:1499    211:635     212:1133    213:1213    214:129     215:30     
 216:3685    217:1047    218:175     219:79      220:271     221:65     
 222:22     

End of report




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