Weekly Routing Table Report

Routing Table Analysis cscora at apnic.net
Fri Nov 19 18:06:09 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 20 Nov, 2004

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

BGP routing table entries examined:                              150962
    Prefixes after maximum aggregation:                           88984
    Unique aggregates announced to Internet:                      72150
Total ASes present in the Internet Routing Table:                 18468
Origin-only ASes present in the Internet Routing Table:           16016
Origin ASes announcing only one prefix:                            7528
Transit ASes present in the Internet Routing Table:                2452
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:                                      19
Prefixes from unregistered ASNs in the Routing Table:                10
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             15
Number of addresses announced to Internet:                   1354415480
    Equivalent to 80 /8s, 186 /16s and 189 /24s
    Percentage of available address space announced:               36.5
    Percentage of allocated address space announced:               59.1
    Percentage of available address space allocated:               61.9
Total number of prefixes smaller than registry allocations:       69617

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

Prefixes being announced by APNIC Region ASes:                    29301
    Total APNIC prefixes after maximum aggregation:               14416
Prefixes being announced from the APNIC address blocks:           27365
    Unique aggregates announced from the APNIC address blocks:    14199
APNIC Region origin ASes present in the Internet Routing Table:    2165
APNIC Region origin ASes announcing only one prefix:                651
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:              166929152
    Equivalent to 9 /8s, 243 /16s and 35 /24s
    Percentage of available APNIC address space announced:         76.2

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:                     85692
    Total ARIN prefixes after maximum aggregation:                51967
Prefixes being announced from the ARIN address blocks:            65583
    Unique aggregates announced from the ARIN address blocks:     23556
ARIN Region origin ASes present in the Internet Routing Table:     9725
ARIN Region origin ASes announcing only one prefix:                3516
ARIN Region transit ASes present in the Internet Routing Table:     951
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               235514384
    Equivalent to 14 /8s, 9 /16s and 170 /24s
    Percentage of available ARIN address space announced:          70.2

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:                     28147
    Total RIPE prefixes after maximum aggregation:                19552
Prefixes being announced from the RIPE address blocks:            24897
    Unique aggregates announced from the RIPE address blocks:     16379
RIPE Region origin ASes present in the Internet Routing Table:     6013
RIPE Region origin ASes announcing only one prefix:                3222
RIPE Region transit ASes present in the Internet Routing Table:    1044
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          19
Number of RIPE addresses announced to Internet:               180277504
    Equivalent to 10 /8s, 190 /16s and 209 /24s
    Percentage of available RIPE address space announced:          63.2

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:                    6567
    Total LACNIC prefixes after maximum aggregation:               2352
Prefixes being announced from the LACNIC address blocks:           6446
    Unique aggregates announced from the LACNIC address blocks:    3973
LACNIC Region origin ASes present in the Internet Routing Table:    403
LACNIC Region origin ASes announcing only one prefix:               118
LACNIC Region transit ASes present in the Internet Routing Table:    80
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        14
Number of LACNIC addresses announced to Internet:              16622080
    Equivalent to 0 /8s, 253 /16s and 162 /24s
    Percentage of available LACNIC address space announced:        49.5

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

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

Prefixes being announced by AfriNIC Region ASes:                   1246
    Total AfriNIC prefixes after maximum aggregation:               697
Prefixes being announced from the AfriNIC address blocks:           857
    Unique aggregates announced from the AfriNIC address blocks:    667
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:                       12
Number of AfriNIC addresses announced to Internet:              2067200
    Equivalent to 0 /8s, 31 /16s and 139 /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      860       4403         163   Data Communications Bureau
 1221      795       1182         570   Telstra Pty Ltd
 9583      559         47          40   Satyam Infoway Ltd.,
 4766      545       3408         266   Korea Internet Exchange for "
 4755      382        133          64   Videsh Sanchar Nigam Ltd. Aut
17676      376       5628          53   XTAGE CORPORATION
 9443      356         69          80   Primus Telecommunications
 2907      354       1857         328   SINET Japan
 9929      344        161          33   China Netcom Corp.
  703      318        346         246   UUNET
17557      315         23         156   Pakistan Telecom
 2764      287        273         233   connect.com.au pty ltd
 7474      266        268         198   Optus Communications Pty Ltd
 4802      234         28         142   Wantree Development
 7563      230         48         167   Korea Internet Infrastructure
 9800      230        380          70   CHINA UNICOM
 9942      229         72         123   COMindico Australia
 9498      219         81          53   BHARTI BT INTERNET LTD.
10036      217         20         198   C&M Communication Co. Ltd.
 4814      210        232           6   China Telecom (Group)

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1424       6633         984   AT&T WorldNet Services
  701     1239       8399         885   UUNET Technologies, Inc. 
  721     1023      21016         298   DLA Systems Automation Center
 1239      923       2880         611   Sprint 
 2386      850        530         611   AT&T Data Communications Serv
 6197      820        522         313   BellSouth Network Solutions, 
 4323      805        672         221   Time Warner Telecom
18566      754        208           6   Covad Communications 
  209      668       3429         513   Qwest 
 3356      635      10959         458   Level 3 Communications, LLC 
20115      603        462         322   Charter Communications 
 3561      547       2374         418   Cable & Wireless USA 
  852      522       1141         399   Telus Advanced Communications
 7843      479        720          75   Adelphia Corp. 
27364      450         36          19   Armstrong Cable Services 
 7132      447       8288         379   SBC Internet Services
 6198      437        349         210   BellSouth Network Solutions, 
 6478      434        775          96   AT&T Worldnet Services 
 5668      417         87          18   Century Telephone 
22909      414        880          63   Comcast Cable Corporation 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      634       2027         524   UUNET - Commercial IP service
 3320      302       2997         237   Deutsche Telekom AG
 8220      281        463         266   COLT Internet - International
 3301      278       1100         269   TeliaNet Sweden
 3300      257        167          82   AUCS Communications Services 
  680      251       2025         239   DFN-IP service G-WiN
21502      246         40           3   NUMERICABLE is a cabled netwo
 3246      219        477         215   Song Networks
13083      217         51           8   Mannesmann Datenverarbeitung 
 1257      204        722         175   SWIPnet Swedish IP Network
 8708      204        116         185   Romania Data Systems S.A.
 5515      192        842         140   Sonera Solution Autonomous Sy
  786      176       1794         176   The JANET IP Service
 3215      161        956          78   France Telecom Transpac
 8866      160         20           7   Bulgarian Telecommunication C
  719      157        322         105   LANLINK autonomous system
 6746      157         30         127   Dynamic Network Technologies,
 3269      151       1289          68   TELECOM ITALIA
25186      148        154         104   France Telecom Transpac's Tra
 5400      142        206         115   BT Ignite European Backbone

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      338        139          75   ImpSat
 8151      308        471         134   UniNet S.A. de C.V. 
16814      212         13           7   NSS, S.A. 
11172      208         99          55   Servicios Alestra S.A de C.V 
 6147      192         94          20   Telefonica Del Peru 
11664      152         12          34   Keytech SA 
 6505      141         90          95   Global One Communicaoes Ltda 
 7303      138         65          20   Telecom Argentina Stet-France
 6503      123        148          82   AVANTEL, S.A. 
11992      103          9          31   Integrated Systems 
14117       98          6           4   Telefonica del Sur S.A. 
11556       97         48           3   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
13999       74         52           9   Mega Cable S.A. de C.V. 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      268        636         225   The Internet Solution 
 5536      111         16           4   Internet Egypt Network
 2018      102        297          98   Tertiary Education Network 
 2905       99        276          72   The Internetworking Company o
20928       52         16           1   Noor Advanced Technologies AS
24835       40         34           7   RAYA Telecom - Egypt
 9129       35          3           4   UUNET Kenya
 6713       30         38           9   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       16          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       754         748      Covad Communications 
  721      1023         725      DLA Systems Automation Center
 4134       860         697      Data Communications Bureau
 4323       805         584      Time Warner Telecom
 9583       559         519      Satyam Infoway Ltd.,
 6197       820         507      BellSouth Network Solutions, 
27364       450         431      Armstrong Cable Services 
 7843       479         404      Adelphia Corp. 
 5668       417         399      Century Telephone 
22773       402         385      Cox Communications, Inc. Atla
  701      1239         354      UUNET Technologies, Inc. 
22909       414         351      Comcast Cable Corporation 
 6467       380         349      E.Spire Communications, Inc. 
 6478       434         338      AT&T Worldnet Services 
17676       376         323      XTAGE CORPORATION
 4755       382         318      Videsh Sanchar Nigam Ltd. Aut
 1239       923         312      Sprint 
 9929       344         311      China Netcom Corp.
13609       333         298      Choice One Communications Inc
 4355       392         293      EarthLink, Inc. 

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
64512   PRIVATE       199.213.17.0/25      15296       Netera Alliance Inc.
64512   PRIVATE       199.213.17.128/25    15296       Netera Alliance Inc.
65002   PRIVATE       212.115.225.0/24      8690       Comint Ltd
65002   PRIVATE       212.115.226.0/24      8690       Comint Ltd
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      
/13:140     /14:314     /15:556     /16:8137    /17:2280    /18:3957    
/19:9861    /20:10430   /21:8021    /22:11074   /23:12685   /24:82548   
/25:247     /26:224     /27:114     /28:70      /29:40      /30:117     
/31:0       /32:42      

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

  ASN   No of nets  Total ann.   Description
18566      739           754      Covad Communications 
 6197      657           820      BellSouth Network Solutions, 
 2386      614           850      AT&T Data Communications Serv
 7018      580          1424      AT&T WorldNet Services
27364      435           450      Armstrong Cable Services 
 9583      390           559      Satyam Infoway Ltd.,
  702      388           634      UUNET - Commercial IP service
 1239      368           923      Sprint 
 4766      366           545      Korea Internet Exchange for "
 5668      360           417      Century Telephone 
  701      357          1239      UUNET Technologies, Inc. 
 6198      320           437      BellSouth Network Solutions, 
13609      290           333      Choice One Communications Inc
 6467      289           380      E.Spire Communications, Inc. 
 6517      286           309      Yipes Communications, Inc. 
20115      283           603      Charter Communications 
 9929      275           344      China Netcom Corp.
 4323      258           805      Time Warner Telecom
11456      258           303      Carolina Online, Inc. 
 3320      247           302      Deutsche Telekom AG

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

   4:4         8:11       12:1434     13:1        15:5        16:2      
  17:3        20:5        24:773      32:71       33:2        38:84     
  40:55       44:3        47:2        52:3        55:1        56:3      
  57:22       60:3        61:629      62:499      63:1862     64:2483   
  65:2072     66:2460     67:458      68:535      69:793      70:40     
  72:10       80:525      81:556      82:318      83:207      84:49     
 128:115     129:165     130:85      131:190     132:26      134:182    
 135:30      136:186     137:81      138:189     139:36      140:225    
 141:108     142:127     143:119     144:158     145:42      146:293    
 147:97      148:328     149:111     150:93      151:62      152:130    
 153:68      154:2       155:131     156:58      157:69      158:135    
 159:164     160:61      161:73      162:379     163:84      164:219    
 165:162     166:118     167:219     168:355     169:123     170:312    
 171:9       192:5663    193:2942    194:2169    195:1537    196:584    
 198:3879    199:3306    200:3835    201:25      202:4931    203:5791   
 204:3560    205:2060    206:2326    207:2624    208:2109    209:3108   
 210:1519    211:655     212:1156    213:1223    214:224     215:31     
 216:3700    217:1056    218:177     219:83      220:286     221:66     
 222:21     

End of report



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