Weekly Routing Table Report

Routing Table Analysis cscora at apnic.net
Fri Nov 12 18:06:11 UTC 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 at lists.apnic.net

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

Routing Table Report   04:00 +10GMT Sat 13 Nov, 2004

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

BGP routing table entries examined:                              150665
    Prefixes after maximum aggregation:                           88779
    Unique aggregates announced to Internet:                      71952
Total ASes present in the Internet Routing Table:                 18421
Origin-only ASes present in the Internet Routing Table:           16001
Origin ASes announcing only one prefix:                            7507
Transit ASes present in the Internet Routing Table:                2420
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:                                      25
Prefixes from unregistered ASNs in the Routing Table:                 7
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             15
Number of addresses announced to Internet:                   1351706232
    Equivalent to 80 /8s, 145 /16s and 102 /24s
    Percentage of available address space announced:               36.5
    Percentage of allocated address space announced:               58.9
    Percentage of available address space allocated:               61.9
Total number of prefixes smaller than registry allocations:       69418

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

Prefixes being announced by APNIC Region ASes:                    29210
    Total APNIC prefixes after maximum aggregation:               14381
Prefixes being announced from the APNIC address blocks:           27317
    Unique aggregates announced from the APNIC address blocks:    14188
APNIC Region origin ASes present in the Internet Routing Table:    2161
APNIC Region origin ASes announcing only one prefix:                650
APNIC Region transit ASes present in the Internet Routing Table:    330
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              166390400
    Equivalent to 9 /8s, 234 /16s and 234 /24s
    Percentage of available APNIC address space announced:         75.9

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:                     85580
    Total ARIN prefixes after maximum aggregation:                51859
Prefixes being announced from the ARIN address blocks:            65489
    Unique aggregates announced from the ARIN address blocks:     23503
ARIN Region origin ASes present in the Internet Routing Table:     9704
ARIN Region origin ASes announcing only one prefix:                3509
ARIN Region transit ASes present in the Internet Routing Table:     941
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          18
Number of ARIN addresses announced to Internet:               235258640
    Equivalent to 14 /8s, 5 /16s and 195 /24s
    Percentage of available ARIN address space announced:          70.1

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:                     28029
    Total RIPE prefixes after maximum aggregation:                19483
Prefixes being announced from the RIPE address blocks:            24785
    Unique aggregates announced from the RIPE address blocks:     16295
RIPE Region origin ASes present in the Internet Routing Table:     5991
RIPE Region origin ASes announcing only one prefix:                3211
RIPE Region transit ASes present in the Internet Routing Table:    1025
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          25
Number of RIPE addresses announced to Internet:               178798976
    Equivalent to 10 /8s, 168 /16s and 65 /24s
    Percentage of available RIPE address space announced:          62.7

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:                    6576
    Total LACNIC prefixes after maximum aggregation:               2354
Prefixes being announced from the LACNIC address blocks:           6413
    Unique aggregates announced from the LACNIC address blocks:    3952
LACNIC Region origin ASes present in the Internet Routing Table:    401
LACNIC Region origin ASes announcing only one prefix:               116
LACNIC Region transit ASes present in the Internet Routing Table:    79
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              16480512
    Equivalent to 0 /8s, 251 /16s and 121 /24s
    Percentage of available LACNIC address space announced:        49.1

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

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

Prefixes being announced by AfriNIC Region ASes:                   1265
    Total AfriNIC prefixes after maximum aggregation:               702
Prefixes being announced from the AfriNIC address blocks:           874
    Unique aggregates announced from the AfriNIC address blocks:    669
AfriNIC Region origin ASes present in the Internet Routing Table:    93
AfriNIC Region origin ASes announcing only one prefix:               21
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:              2068992
    Equivalent to 0 /8s, 31 /16s and 146 /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      799       1183         573   Telstra Pty Ltd
 9583      554         43          42   Satyam Infoway Ltd.,
 4766      546       3408         268   Korea Internet Exchange for "
 4755      376        133          61   Videsh Sanchar Nigam Ltd. Aut
17676      374       5596          54   XTAGE CORPORATION
 2907      354       1857         328   SINET Japan
 9443      354         69          80   Primus Telecommunications
 9929      344        161          33   China Netcom Corp.
  703      316        346         244   UUNET
17557      315         23         156   Pakistan Telecom
 2764      288        273         235   connect.com.au pty ltd
 7474      267        268         198   Optus Communications Pty Ltd
 4802      234         28         142   Wantree Development
 9942      233         72         125   COMindico Australia
 9800      230        380          70   CHINA UNICOM
 7563      228         48         165   Korea Internet Infrastructure
 9498      220         81          52   BHARTI BT INTERNET LTD.
10036      216         20         197   C&M Communication Co. Ltd.
 4814      208        232           6   China Telecom (Group)

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1421       6633         986   AT&T WorldNet Services
  701     1247       8417         892   UUNET Technologies, Inc. 
  721     1016      21013         299   DLA Systems Automation Center
 1239      924       2880         612   Sprint 
 2386      849        530         610   AT&T Data Communications Serv
 6197      819        514         311   BellSouth Network Solutions, 
 4323      796        670         217   Time Warner Telecom
18566      751        208           6   Covad Communications 
  209      660       3429         506   Qwest 
 3356      635      10944         458   Level 3 Communications, LLC 
20115      601        461         323   Charter Communications 
 3561      558       2414         422   Cable & Wireless USA 
  852      522       1142         400   Telus Advanced Communications
 7843      497        711          98   Adelphia Corp. 
 7132      445       8286         377   SBC Internet Services
 6198      437        349         210   BellSouth Network Solutions, 
 6478      426        738          98   AT&T Worldnet Services 
 5668      414         87          18   Century Telephone 
27364      413         36          19   Armstrong Cable Services 
22909      412        863          61   Comcast Cable Corporation 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      631       2026         523   UUNET - Commercial IP service
 3320      299       2996         235   Deutsche Telekom AG
 8220      280        463         266   COLT Internet - International
 3301      276       1099         267   TeliaNet Sweden
 3300      256        167          81   AUCS Communications Services 
21502      253         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      203        726         174   SWIPnet Swedish IP Network
 8708      203        115         183   Romania Data Systems S.A.
 5515      192        842         140   Sonera Solution Autonomous Sy
  786      176       1794         176   The JANET IP Service
 6746      160         30         130   Dynamic Network Technologies,
 3215      159        940          77   France Telecom Transpac
 8866      159         20           7   Bulgarian Telecommunication C
  719      156        322         105   LANLINK autonomous system
 3269      150       1259          68   TELECOM ITALIA
25186      148        154         104   France Telecom Transpac's Tra
 5400      145        206         117   BT Ignite European Backbone

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      347        139          69   ImpSat
 8151      309        471         134   UniNet S.A. de C.V. 
11172      211        100          55   Servicios Alestra S.A de C.V 
16814      211         13           7   NSS, S.A. 
 6147      190         94          20   Telefonica Del Peru 
11664      157         12          32   Keytech SA 
 6505      140         90          94   Global One Communicaoes Ltda 
 7303      140         64          24   Telecom Argentina Stet-France
 6503      123        148          82   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 
11311       86          8          23   Sinectis S.A. 
 6535       85          7          18   Chilesat Servicios  Empresari
10481       82         32           7   Prima S.A. 
14420       81          5          33   ANDINATEL S.A. 
 4270       80         18           9   Red de Interconexion Universi
15311       77         23          37   Telefonica Empresas 
 5639       75          8           8   Telecommunications Services o
11340       71         21          47   Red Universitaria Nacional 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      272        649         230   The Internet Solution 
 2905      116        260          74   The Internetworking Company o
 5536      109         16           4   Internet Egypt Network
 2018      101        297          97   Tertiary Education Network 
20928       52         16           1   Noor Advanced Technologies AS
24835       40         34           7   RAYA Telecom - Egypt
 9129       35          3           4   UUNET Kenya
 6713       31         42          10   Itissalat Al-MAGHRIB
 5713       26        125          24   Telkom SA Ltd 
 8524       24          1           4   AUCEGYPT Autonomous System
16637       22         10          19   Johnnic e-Ventures 
 8452       18         20           5   TEDATA
10798       18          1          12   Standard Bank of South Africa
12258       18          3          12   Vodacom Internet Company 
12455       17          4           2   Jambonet Autonomous system
21280       16          2           3   Swift Global Kenya Ltd.Is an 
 8346       15          7          14   SONATEL-AS Autonomous System
15706       15          4           2   Sudatel Internet Exchange Aut
15808       13          1           2   Communication Solutions Ltd i
17148       13          1           7   First National Bank 

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

  ASN   No of nets  Net Savings Description
18566       751         745      Covad Communications 
  721      1016         717      DLA Systems Automation Center
 4134       856         693      Data Communications Bureau
 4323       796         579      Time Warner Telecom
 9583       554         512      Satyam Infoway Ltd.,
 6197       819         508      BellSouth Network Solutions, 
 7843       497         399      Adelphia Corp. 
 5668       414         396      Century Telephone 
27364       413         394      Armstrong Cable Services 
22773       401         384      Cox Communications, Inc. Atla
 6467       405         375      E.Spire Communications, Inc. 
  701      1247         355      UUNET Technologies, Inc. 
22909       412         351      Comcast Cable Corporation 
 6478       426         328      AT&T Worldnet Services 
17676       374         320      XTAGE CORPORATION
 4755       376         315      Videsh Sanchar Nigam Ltd. Aut
 1239       924         312      Sprint 
 9929       344         311      China Netcom Corp.
 4355       392         293      EarthLink, Inc. 
20115       601         278      Charter Communications 

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

Bad AS  Designation  Network              Transit AS  Description
65006   PRIVATE       84.18.32.0/19        33831       Royal Hashemite Cour
 1877   UNALLOCATED   192.108.199.0/24      1876       Southern Methodist U
 5555   UNALLOCATED   192.156.8.0/24         721       DLA Systems Automati
65529   PRIVATE       216.21.199.0/24      14697       VDot.Net 
33507   UNALLOCATED   216.94.118.0/24        701       UUNET Technologies, 
65529   PRIVATE       216.152.237.0/24     14697       VDot.Net 
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       /10:7       /11:15      /12:61      
/13:138     /14:314     /15:555     /16:8115    /17:2274    /18:3941    
/19:9816    /20:10413   /21:7998    /22:11065   /23:12698   /24:82332   
/25:252     /26:241     /27:128     /28:71      /29:54      /30:118     
/31:0       /32:37      

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

  ASN   No of nets  Total ann.   Description
18566      736           751      Covad Communications 
 6197      657           819      BellSouth Network Solutions, 
 2386      614           849      AT&T Data Communications Serv
 7018      576          1421      AT&T WorldNet Services
27364      398           413      Armstrong Cable Services 
 9583      389           554      Satyam Infoway Ltd.,
  702      385           631      UUNET - Commercial IP service
 1239      367           924      Sprint 
 4766      366           546      Korea Internet Exchange for "
 5668      358           414      Century Telephone 
  701      352          1247      UUNET Technologies, Inc. 
 6198      320           437      BellSouth Network Solutions, 
 6467      305           405      E.Spire Communications, Inc. 
 6517      282           306      Yipes Communications, Inc. 
20115      282           601      Charter Communications 
 9929      275           344      China Netcom Corp.
13609      267           310      Choice One Communications Inc
11456      256           301      Carolina Online, Inc. 
 4323      255           796      Time Warner Telecom
21502      250           253      NUMERICABLE is a cabled netwo

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

   4:4         8:11       12:1436     13:1        15:5        16:2      
  17:3        20:5        24:745      32:69       33:2        38:83     
  40:55       44:3        47:2        52:3        55:1        56:3      
  57:21       60:3        61:624      62:501      63:1849     64:2458   
  65:2065     66:2472     67:452      68:536      69:769      70:40     
  72:2        80:527      81:537      82:316      83:201      84:47     
 128:129     129:165     130:84      131:182     132:27      134:185    
 135:28      136:187     137:81      138:184     139:36      140:210    
 141:108     142:126     143:114     144:158     145:42      146:296    
 147:96      148:329     149:112     150:93      151:62      152:133    
 153:68      154:2       155:131     156:58      157:69      158:133    
 159:164     160:61      161:73      162:380     163:80      164:216    
 165:162     166:116     167:221     168:356     169:123     170:312    
 171:9       192:5659    193:2930    194:2165    195:1534    196:601    
 198:3915    199:3302    200:3834    201:23      202:4925    203:5780   
 204:3556    205:2063    206:2339    207:2593    208:2115    209:3088   
 210:1518    211:652     212:1148    213:1222    214:224     215:31     
 216:3690    217:1045    218:176     219:82      220:281     221:65     
 222:22     

End of report



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