Weekly Routing Table Report

Routing Table Analysis cscora at apnic.net
Fri Dec 3 18:06:33 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 04 Dec, 2004

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

BGP routing table entries examined:                              151752
    Prefixes after maximum aggregation:                           89448
    Unique aggregates announced to Internet:                      72679
Total ASes present in the Internet Routing Table:                 18567
Origin-only ASes present in the Internet Routing Table:           16109
Origin ASes announcing only one prefix:                            7563
Transit ASes present in the Internet Routing Table:                2458
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:                                      17
Prefixes from unregistered ASNs in the Routing Table:                17
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             15
Number of addresses announced to Internet:                   1358526564
    Equivalent to 80 /8s, 249 /16s and 120 /24s
    Percentage of available address space announced:               36.7
    Percentage of allocated address space announced:               59.2
    Percentage of available address space allocated:               61.9
Total number of prefixes smaller than registry allocations:       70095

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

Prefixes being announced by APNIC Region ASes:                    29464
    Total APNIC prefixes after maximum aggregation:               14549
Prefixes being announced from the APNIC address blocks:           27528
    Unique aggregates announced from the APNIC address blocks:    14403
APNIC Region origin ASes present in the Internet Routing Table:    2168
APNIC Region origin ASes announcing only one prefix:                653
APNIC Region transit ASes present in the Internet Routing Table:    332
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              168559616
    Equivalent to 10 /8s, 12 /16s and 4 /24s
    Percentage of available APNIC address space announced:         76.9

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:                     85877
    Total ARIN prefixes after maximum aggregation:                52068
Prefixes being announced from the ARIN address blocks:            65712
    Unique aggregates announced from the ARIN address blocks:     23613
ARIN Region origin ASes present in the Internet Routing Table:     9751
ARIN Region origin ASes announcing only one prefix:                3525
ARIN Region transit ASes present in the Internet Routing Table:     961
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               236361216
    Equivalent to 14 /8s, 22 /16s and 150 /24s
    Percentage of available ARIN address space announced:          70.4

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:                     28470
    Total RIPE prefixes after maximum aggregation:                19719
Prefixes being announced from the RIPE address blocks:            25326
    Unique aggregates announced from the RIPE address blocks:     16552
RIPE Region origin ASes present in the Internet Routing Table:     6076
RIPE Region origin ASes announcing only one prefix:                3244
RIPE Region transit ASes present in the Internet Routing Table:    1039
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          17
Number of RIPE addresses announced to Internet:               181555968
    Equivalent to 10 /8s, 210 /16s and 83 /24s
    Percentage of available RIPE address space announced:          63.7

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:                    6688
    Total LACNIC prefixes after maximum aggregation:               2409
Prefixes being announced from the LACNIC address blocks:           6518
    Unique aggregates announced from the LACNIC address blocks:    4012
LACNIC Region origin ASes present in the Internet Routing Table:    407
LACNIC Region origin ASes announcing only one prefix:               121
LACNIC Region transit ASes present in the Internet Routing Table:    80
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        15
Number of LACNIC addresses announced to Internet:              16800512
    Equivalent to 1 /8s, 0 /16s and 91 /24s
    Percentage of available LACNIC address space announced:        50.1

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

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

Prefixes being announced by AfriNIC Region ASes:                   1237
    Total AfriNIC prefixes after maximum aggregation:               703
Prefixes being announced from the AfriNIC address blocks:           851
    Unique aggregates announced from the AfriNIC address blocks:    670
AfriNIC Region origin ASes present in the Internet Routing Table:    93
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:                       12
Number of AfriNIC addresses announced to Internet:              2088704
    Equivalent to 0 /8s, 31 /16s and 223 /24s
    Percentage of available AfriNIC address space announced:       12.4

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      862       4405         164   Data Communications Bureau
 1221      792       1182         569   Telstra Pty Ltd
 9583      557         47          40   Satyam Infoway Ltd.,
 4766      548       3409         270   Korea Internet Exchange for "
 4755      397        134          71   Videsh Sanchar Nigam Ltd. Aut
17676      391       5868          57   XTAGE CORPORATION
 9443      356         69          80   Primus Telecommunications
 2907      354       1857         328   SINET Japan
 9929      347        162          34   China Netcom Corp.
17557      323         23         158   Pakistan Telecom
  703      322        350         247   UUNET
 2764      284        272         232   connect.com.au pty ltd
 7474      273        268         203   Optus Communications Pty Ltd
 4802      233         28         141   Wantree Development
 9800      232        381          71   CHINA UNICOM
 9498      228         81          53   BHARTI BT INTERNET LTD.
 7563      227         48         164   Korea Internet Infrastructure
10036      217         20         198   C&M Communication Co. Ltd.
17974      216         62          10   PT TELEKOMUNIKASI INDONESIA
 4814      213        232           6   China Telecom (Group)

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1424       6633         987   AT&T WorldNet Services
  701     1067       8383         881   UUNET Technologies, Inc. 
  721     1040      21084         305   DLA Systems Automation Center
 1239      949       2883         625   Sprint 
 2386      849        530         613   AT&T Data Communications Serv
 6197      814        381         352   BellSouth Network Solutions, 
 4323      810        672         221   Time Warner Telecom
18566      754        208           6   Covad Communications 
  209      659       3426         510   Qwest 
 3356      636      10961         462   Level 3 Communications, LLC 
20115      593        462         317   Charter Communications 
 3561      546       2368         414   Cable & Wireless USA 
  852      522       1142         403   Telus Advanced Communications
 7843      478        726          88   Adelphia Corp. 
 7132      453       8292         385   SBC Internet Services
 6198      445        378         203   BellSouth Network Solutions, 
27364      443         36          19   Armstrong Cable Services 
 6478      442        782          95   AT&T Worldnet Services 
 5668      417         87          18   Century Telephone 
22909      416        897          60   Comcast Cable Corporation 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      631       2024         522   UUNET - Commercial IP service
 3320      303       2997         237   Deutsche Telekom AG
 8220      280        464         265   COLT Internet - International
 3301      279       1098         270   TeliaNet Sweden
21502      272         40           3   NUMERICABLE is a cabled netwo
  680      251       2025         239   DFN-IP service G-WiN
 3246      223        481         219   Song Networks
13083      217         51           8   Mannesmann Datenverarbeitung 
 1257      210        722         175   SWIPnet Swedish IP Network
 8708      205        116         187   Romania Data Systems S.A.
 5515      193        842         140   Sonera Solution Autonomous Sy
  786      176       1794         176   The JANET IP Service
 3215      163        972          78   France Telecom Transpac
 8866      160         20           7   Bulgarian Telecommunication C
  719      159        322         104   LANLINK autonomous system
 6746      158         46         128   Dynamic Network Technologies,
 3269      155       1329          69   TELECOM ITALIA
 3300      155        167          79   AUCS Communications Services 
25186      146        154         102   France Telecom Transpac's Tra
 3303      132        611         128   Swisscom Ltd

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      350        139          79   ImpSat
 8151      311        471         137   UniNet S.A. de C.V. 
16814      218         14           6   NSS, S.A. 
11172      214         99          55   Servicios Alestra S.A de C.V 
 6147      192         94          20   Telefonica Del Peru 
11664      158         12          31   Keytech SA 
 7303      145         67          24   Telecom Argentina Stet-France
 6505      139         90          96   Global One Communicaoes Ltda 
 6503      128        148          85   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       83          5          24   Chilesat Servicios  Empresari
13999       83         52           9   Mega Cable S.A. de C.V. 
10481       82         32           7   Prima S.A. 
14420       81          5          43   ANDINATEL S.A. 
 4270       80         18           9   Red de Interconexion Universi
 5639       77          8           8   Telecommunications Services o
15311       77         23          37   Telefonica Empresas 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      269        636         226   The Internet Solution 
 5536      111         16           4   Internet Egypt Network
 2018      102        297          98   Tertiary Education Network 
 2905       84        273          76   The Internetworking Company o
20928       54         16           1   Noor Advanced Technologies AS
24835       42         34           7   RAYA Telecom - Egypt
 6713       32         38           9   Itissalat Al-MAGHRIB
 9129       30          3           2   UUNET Kenya
 5713       28        141          25   Telkom SA Ltd 
12455       22          6           4   Jambonet Autonomous system
16637       22         10          19   Johnnic e-Ventures 
 8524       18          1           5   AUCEGYPT Autonomous System
10798       18          1          12   Standard Bank of South Africa
12258       18          3          12   Vodacom Internet Company 
 8452       17         20           5   TEDATA
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
21491       14          1           3   UTL On-line is RF broadband I
15808       13          1           2   Communication Solutions Ltd i

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

  ASN   No of nets  Net Savings Description
18566       754         748      Covad Communications 
  721      1040         735      DLA Systems Automation Center
 4134       862         698      Data Communications Bureau
 4323       810         589      Time Warner Telecom
 9583       557         517      Satyam Infoway Ltd.,
 6197       814         462      BellSouth Network Solutions, 
27364       443         424      Armstrong Cable Services 
 5668       417         399      Century Telephone 
 7843       478         390      Adelphia Corp. 
22773       406         385      Cox Communications, Inc. Atla
22909       416         356      Comcast Cable Corporation 
 6467       380         349      E.Spire Communications, Inc. 
 6478       442         347      AT&T Worldnet Services 
17676       391         334      XTAGE CORPORATION
 4755       397         326      Videsh Sanchar Nigam Ltd. Aut
 1239       949         324      Sprint 
 9929       347         313      China Netcom Corp.
 4355       392         293      EarthLink, Inc. 
 4766       548         278      Korea Internet Exchange for "
13609       312         278      Choice One Communications Inc

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

Bad AS  Designation  Network              Transit AS  Description
 1877   UNALLOCATED   192.108.199.0/24      1876       Southern Methodist U
65512   PRIVATE       198.202.65.0/24        195       San Diego Supercompu
65512   PRIVATE       198.202.66.0/24        195       San Diego Supercompu
65512   PRIVATE       198.202.67.0/24        195       San Diego Supercompu
65512   PRIVATE       198.202.68.0/24        195       San Diego Supercompu
65512   PRIVATE       198.202.69.0/24        195       San Diego Supercompu
65512   PRIVATE       198.202.70.0/24        195       San Diego Supercompu
65512   PRIVATE       199.165.16.0/24        195       San Diego Supercompu
65512   PRIVATE       199.165.16.0/20        195       San Diego Supercompu
65512   PRIVATE       199.165.17.0/24        195       San Diego Supercompu
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.
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      /12:60      
/13:139     /14:314     /15:559     /16:8181    /17:2291    /18:3990    
/19:9932    /20:10519   /21:8105    /22:11184   /23:12768   /24:82780   
/25:264     /26:240     /27:119     /28:60      /29:39      /30:120     
/31:0       /32:44      

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

  ASN   No of nets  Total ann.   Description
18566      739           754      Covad Communications 
 6197      662           814      BellSouth Network Solutions, 
 2386      612           849      AT&T Data Communications Serv
 7018      582          1424      AT&T WorldNet Services
27364      428           443      Armstrong Cable Services 
 9583      388           557      Satyam Infoway Ltd.,
 1239      387           949      Sprint 
  702      386           631      UUNET - Commercial IP service
 4766      368           548      Korea Internet Exchange for "
 5668      360           417      Century Telephone 
 6198      326           445      BellSouth Network Solutions, 
 6467      289           380      E.Spire Communications, Inc. 
 6517      281           304      Yipes Communications, Inc. 
 9929      277           347      China Netcom Corp.
20115      271           593      Charter Communications 
13609      270           312      Choice One Communications Inc
21502      269           272      NUMERICABLE is a cabled netwo
 4323      260           810      Time Warner Telecom
11456      256           301      Carolina Online, Inc. 
 3320      248           303      Deutsche Telekom AG

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

   4:4         8:10       12:1433     13:1        15:5        16:2      
  17:3        18:4        20:5        24:735      32:71       33:3      
  38:87       40:55       44:3        47:2        52:3        55:1      
  56:3        57:23       60:8        61:650      62:512      63:1852   
  64:2492     65:2078     66:2492     67:464      68:521      69:810    
  70:44       72:12       80:520      81:583      82:362      83:205    
  84:64       85:3       128:120     129:164     130:89      131:193    
 132:29      134:188     135:30      136:187     137:81      138:189    
 139:36      140:222     141:108     142:135     143:120     144:164    
 145:40      146:282     147:96      148:263     149:112     150:93     
 151:63      152:122     153:69      154:2       155:131     156:62     
 157:70      158:136     159:162     160:61      161:59      162:378    
 163:84      164:219     165:168     166:122     167:221     168:354    
 169:124     170:313     171:9       192:5672    193:2979    194:2204   
 195:1557    196:583     198:3894    199:3304    200:3876    201:28     
 202:4948    203:5784    204:3567    205:2078    206:2273    207:2591   
 208:2100    209:3063    210:1525    211:647     212:1168    213:1233   
 214:227     215:31      216:3725    217:1068    218:179     219:88     
 220:289     221:73      222:31     

End of report



More information about the NANOG mailing list