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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Nov 25 13:08:41 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@lists.apnic.net

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

Routing Table Report   04:00 +10GMT Sat 26 Nov, 2005

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

BGP routing table entries examined:                              175412
    Prefixes after maximum aggregation:                           98989
    Unique aggregates announced to Internet:                      84958
Total ASes present in the Internet Routing Table:                 20974
Origin-only ASes present in the Internet Routing Table:           18252
Origin ASes announcing only one prefix:                            8628
Transit ASes present in the Internet Routing Table:                2722
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:                 2
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             12
Number of addresses announced to Internet:                   1464975232
    Equivalent to 87 /8s, 81 /16s and 191 /24s
    Percentage of available address space announced:               39.5
    Percentage of allocated address space announced:               59.5
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       84231

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

Prefixes being announced by APNIC Region ASes:                    36699
    Total APNIC prefixes after maximum aggregation:               15833
Prefixes being announced from the APNIC address blocks:           34450
    Unique aggregates announced from the APNIC address blocks:    16836
APNIC Region origin ASes present in the Internet Routing Table:    2408
APNIC Region origin ASes announcing only one prefix:                700
APNIC Region transit ASes present in the Internet Routing Table:    367
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              207770304
    Equivalent to 12 /8s, 98 /16s and 82 /24s
    Percentage of available APNIC address space announced:         77.1

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911
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:                     92643
    Total ARIN prefixes after maximum aggregation:                55837
Prefixes being announced from the ARIN address blocks:            72165
    Unique aggregates announced from the ARIN address blocks:     27489
ARIN Region origin ASes present in the Internet Routing Table:    10369
ARIN Region origin ASes announcing only one prefix:                3846
ARIN Region transit ASes present in the Internet Routing Table:     963
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          17
Number of ARIN addresses announced to Internet:               276880896
    Equivalent to 16 /8s, 128 /16s and 222 /24s
    Percentage of available ARIN address space announced:          68.8

ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  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
                       35840-36863
ARIN Address Blocks    24/8, 63/8, 64/6, 68/7, 70/6, 74/7, 76/8,
                       198/7, 204/6, 208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                     34319
    Total RIPE prefixes after maximum aggregation:                23169
Prefixes being announced from the RIPE address blocks:            31276
    Unique aggregates announced from the RIPE address blocks:     20972
RIPE Region origin ASes present in the Internet Routing Table:     7333
RIPE Region origin ASes announcing only one prefix:                3833
RIPE Region transit ASes present in the Internet Routing Table:    1210
Average RIPE Region AS path length visible:                         5.0
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               224984832
    Equivalent to 13 /8s, 104 /16s and 255 /24s
    Percentage of available RIPE address space announced:          67.1

RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
RIPE Address Blocks    62/8, 80/5, 88/6, 188/8, 193/8, 194/7, 212/7
                       and 217/8

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

Prefixes being announced by LACNIC Region ASes:                    9957
    Total LACNIC prefixes after maximum aggregation:               3298
Prefixes being announced from the LACNIC address blocks:           8248
    Unique aggregates announced from the LACNIC address blocks:    4765
LACNIC Region origin ASes present in the Internet Routing Table:    650
LACNIC Region origin ASes announcing only one prefix:               207
LACNIC Region transit ASes present in the Internet Routing Table:   122
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC addresses announced to Internet:              22922752
    Equivalent to 1 /8s, 93 /16s and 198 /24s
    Percentage of available LACNIC address space announced:        34.2

LACNIC AS Blocks       26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks  189/8, 190/8, 200/7

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

Prefixes being announced by AfriNIC Region ASes:                   1787
    Total AfriNIC prefixes after maximum aggregation:               852
Prefixes being announced from the AfriNIC address blocks:          1150
    Unique aggregates announced from the AfriNIC address blocks:    833
AfriNIC Region origin ASes present in the Internet Routing Table:   141
AfriNIC Region origin ASes announcing only one prefix:               42
AfriNIC Region transit ASes present in the Internet Routing Table:   18
Average AfriNIC Region AS path length visible:                      4.6
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:              2862848
    Equivalent to 0 /8s, 43 /16s and 175 /24s
    Percentage of available AfriNIC address space announced:        8.5

AfriNIC AS Blocks      36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4134     1017       6348         217   CHINANET-BACKBONE
 9583      830         77          12   Sify Limited
 4755      753        259          69   Videsh Sanchar Nigam Ltd. Aut
 1221      742       1342         514   Telstra Pty Ltd
 4766      651       3927         287   Korea Telecom (KIX)
 7545      510        108          69   TPG Internet Pty Ltd
17676      470       6819         100   Softbank BB Corp.
 9498      410        216          65   BHARTI BT INTERNET LTD.
 9443      394         87          80   Primus Telecommunications
17488      370         22          10   Hathway IP Over Cable Interne
 4802      348         74         160   Wantree Development
 2907      340       1764         317   SINET Japan
17557      331         24         161   Pakistan Telecom
 9929      330        217          48   China Netcom Corp.
 7474      329        258         227   SingTel Optus Pty Ltd
18302      312        142         173   SK Global co., Ltd
17974      280         65          16   PT TELEKOMUNIKASI INDONESIA
 9837      276         79         177   Powertel Ltd
18101      271         68          19   Reliance Infocom Ltd Internet
 9800      257        410          67   CHINA UNICOM

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1477       6316         964   AT&T WorldNet Services
 4323     1191        706         233   Time Warner Telecom
  174     1069       5846         992   Cogent Communications
  721     1066      21935         310   DLA Systems Automation Center
  701      987       8135         832   UUNET Technologies, Inc. 
 6197      962        407         496   BellSouth Network Solutions, 
 2386      914        528         687   AT&T Data Communications Serv
18566      878        240           7   Covad Communications 
 1239      845       2801         599   Sprint 
  209      656       3607         520   Qwest 
20115      655        532         345   Charter Communications 
11492      629         81          10   Cable One 
  852      573       1093         381   Telus Advanced Communications
19262      563       1593         135   Verizon Global Networks 
19916      563         49          54   OLM LLC 
  855      557        247          64   Canadian Research Network 
22773      557       1468          25   Cox Communications, Inc.
 3602      543        126         103   Sprint Canada, Inc. 
 3356      515      10633         402   Level 3 Communications, LLC 
 6478      495       1427         276   AT&T Worldnet Services 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      616       1960         484   UUNET - Commercial IP service
 3301      304       1101         290   TeliaNet Sweden
 3320      285       3230         240   Deutsche Telekom AG
 8220      271        475         266   COLT Telecommunications
  680      245       2040         239   DFN-IP service G-WiN
 8708      233        274         219   Romania Data Systems S.A.
 3246      230        477         223   Song Networks
 6746      202         51         173   Dynamic Network Technologies,
 1257      195        712         171   SWIPnet Swedish IP Network
 3269      182       1829          68   TELECOM ITALIA
 5515      182        840         128   Sonera Solution Autonomous Sy
  786      174       1795         174   The JANET IP Service
 5400      166        317         136   BT Ignite European Backbone
 6830      161        669          33   UPC Distribution Services
 3300      160        170          94   AUCS Communications Services 
 8866      159         37           9   Bulgarian Telecommunication C
 3215      150       1275          81   France Telecom Transpac
24863      150         37           6   LINKdotNET AS number
12479      148        322           5   Uni2 Autonomous System
25186      148        211         104   France Telecom Transpac's Tra

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      397        709         170   UniNet S.A. de C.V. 
16814      295         18           7   NSS, S.A. 
11172      282        104          69   Servicios Alestra S.A de C.V 
11664      222         22          14   Keytech SA 
19632      196         14           5   Metropolis Intercom S.A. 
14117      184         11           6   Telefonica del Sur S.A. 
22047      180        128           8   VTR PUNTO NET S.A. 
 6147      158        118          21   Telefonica Del Peru 
 7303      152         72          19   Telecom Argentina Stet-France
13999      142         52           9   Mega Cable S.A. de C.V. 
11556      130         64           3   Cable-Wireless Panama 
19169      126          8          23   Telconet 
10481      121         48           8   Prima S.A. 
 6503      113        148          74   AVANTEL, S.A. 
 6505      113         89          83   Global One Communicaoes Ltda 
18822      113          7          10   TELEFONICA MANQUEHUE 
21826      112         14          18   INTERCABLE 
 5639      111         12           9   Telecommunications Services o
11311       99          8          10   Sinectis S.A. 
 4270       92         17           9   Red de Interconexion Universi

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      268        708         228   The Internet Solution 
 8452      147         44           7   TEDATA
 5536      122          8          16   Internet Egypt Network
 2018      117        298         103   Tertiary Education Network 
 2905       78        211          71   The Internetworking Company o
20928       61         16           2   Noor Advanced Technologies AS
24835       59         34           6   RAYA Telecom - Egypt
 6713       56         71          10   Itissalat Al-MAGHRIB
15475       56         84           4   Nile Online
 5713       38        151          34   Telkom SA Ltd 
12455       33          6           3   Jambonet Autonomous system
33774       33          4          24   AS Number for Telecom Algeria
15706       31          8           3   Sudatel Internet Exchange Aut
 8524       23          1           4   AUCEGYPT Autonomous System
16637       23         10          21   Johnnic e-Ventures 
23889       23          5           9   MAURITIUS TELECOM
10798       22          1          13   Standard Bank of South Africa
21280       21          4           4   Swift Global Kenya Ltd.Is an 
12258       17          3          11   Vodacom Internet Company 
15808       17          2           2   Communication Solutions Ltd i

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

  ASN   No of nets  Net Savings Description
 4323      1191         958      Time Warner Telecom
18566       878         871      Covad Communications 
 9583       830         818      Sify Limited
 4134      1017         800      CHINANET-BACKBONE
  721      1066         756      DLA Systems Automation Center
 4755       753         684      Videsh Sanchar Nigam Ltd. Aut
11492       629         619      Cable One 
22773       557         532      Cox Communications, Inc.
19916       563         509      OLM LLC 
  855       557         493      Canadian Research Network 
 6197       962         466      BellSouth Network Solutions, 
 5668       476         450      CenturyTel Internet Holdings,
 7545       510         441      TPG Internet Pty Ltd
 3602       543         440      Sprint Canada, Inc. 
19262       563         428      Verizon Global Networks 
17676       470         370      Softbank BB Corp.
 4766       651         364      Korea Telecom (KIX)
17488       370         360      Hathway IP Over Cable Interne
 6467       403         355      E.Spire Communications, Inc. 
 9498       410         345      BHARTI BT INTERNET LTD.

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

Bad AS  Designation  Network              Transit AS  Description
65003   PRIVATE       57.250.244.0/24      13879       SITA-EQUANT 
24413   UNALLOCATED   202.46.32.0/19       17623       China Netcom Corp.

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
192.43.230.0/24       7575     Australian Academic and Rease
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 
192.72.0.0/18         4780     Digital United Inc.
192.72.0.0/16         4780     Digital United Inc.
192.84.205.0/24        719     LANLINK autonomous system
192.119.135.0/24       270     NASA 
192.172.0.0/19         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        /8:18       /9:5       /10:8       /11:17      /12:82      
/13:188     /14:342     /15:666     /16:8606    /17:2895    /18:4883    
/19:11042   /20:12165   /21:10216   /22:13506   /23:14613   /24:95210   
/25:347     /26:291     /27:203     /28:26      /29:12      /30:37      
/31:3       /32:31      

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

  ASN   No of nets  Total ann.   Description
18566      862           878      Covad Communications 
 6197      784           962      BellSouth Network Solutions, 
 7018      728          1477      AT&T WorldNet Services
 9583      653           830      Sify Limited
 2386      641           914      AT&T Data Communications Serv
11492      621           629      Cable One 
 4323      569          1191      Time Warner Telecom
19916      557           563      OLM LLC 
 4766      456           651      Korea Telecom (KIX)
  855      430           557      Canadian Research Network 
  702      395           616      UUNET - Commercial IP service
 7011      381           432      Citizens Utilities 
 5668      376           476      CenturyTel Internet Holdings,
 1239      365           845      Sprint 
 6198      355           493      BellSouth Network Solutions, 
 6517      318           343      Yipes Communications, Inc. 
15270      317           344      PaeTec.net -a division of Pae
13609      298           340      Choice One Communications Inc
18302      296           312      SK Global co., Ltd
  701      286           987      UUNET Technologies, Inc. 

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

   4:3         8:38       12:1621     13:1        15:11       16:3      
  17:3        18:3        20:42       24:680      30:2        32:64     
  38:182      40:54       44:3        47:3        52:4        55:1      
  56:3        57:35       58:94       59:95       60:153      61:803    
  62:791      63:1897     64:2909     65:2126     66:2895     67:636    
  68:685      69:1315     70:236      71:35       72:467      80:695    
  81:580      82:481      83:317      84:308      85:371      86:205    
  87:101     125:63      128:142     129:169     130:99      131:301    
 132:34      133:1       134:151     135:45      136:164     137:71     
 138:173     139:75      140:446     141:146     142:400     143:145    
 144:219     145:34      146:304     147:131     148:271     149:193    
 150:107     151:73      152:111     153:94      154:5       155:152    
 156:84      157:118     158:146     159:179     160:85      161:76     
 162:241     163:159     164:189     165:183     166:146     167:246    
 168:460     169:139     170:309     171:12      192:5749    193:3359   
 194:2437    195:1642    196:720     198:3910    199:3213    200:4288   
 201:455     202:6247    203:6586    204:3828    205:2040    206:2440   
 207:2886    208:2032    209:3454    210:1781    211:797     212:1219   
 213:1382    214:315     215:42      216:3842    217:1169    218:222    
 219:128     220:539     221:317     222:129    

End of report




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