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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Dec 23 13:08:55 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 24 Dec, 2005

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

BGP routing table entries examined:                              176968
    Prefixes after maximum aggregation:                           99696
    Unique aggregates announced to Internet:                      85988
Total ASes present in the Internet Routing Table:                 21229
Origin-only ASes present in the Internet Routing Table:           18478
Origin ASes announcing only one prefix:                            8748
Transit ASes present in the Internet Routing Table:                2751
Transit-only ASes present in the Internet Routing Table:             75
Average AS path length visible in the Internet Routing Table:       4.6
    Max AS path length visible:                                      22
Prefixes from unregistered ASNs in the Routing Table:                11
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             11
Number of addresses announced to Internet:                   1492308416
    Equivalent to 88 /8s, 242 /16s and 209 /24s
    Percentage of available address space announced:               40.3
    Percentage of allocated address space announced:               60.6
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       85142

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

Prefixes being announced by APNIC Region ASes:                    36893
    Total APNIC prefixes after maximum aggregation:               15758
Prefixes being announced from the APNIC address blocks:           34639
    Unique aggregates announced from the APNIC address blocks:    17095
APNIC Region origin ASes present in the Internet Routing Table:    2446
APNIC Region origin ASes announcing only one prefix:                699
APNIC Region transit ASes present in the Internet Routing Table:    373
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              208964288
    Equivalent to 12 /8s, 116 /16s and 138 /24s
    Percentage of available APNIC address space announced:         77.5

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:                     93358
    Total ARIN prefixes after maximum aggregation:                56140
Prefixes being announced from the ARIN address blocks:            72719
    Unique aggregates announced from the ARIN address blocks:     27884
ARIN Region origin ASes present in the Internet Routing Table:    10407
ARIN Region origin ASes announcing only one prefix:                3871
ARIN Region transit ASes present in the Internet Routing Table:     954
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          17
Number of ARIN addresses announced to Internet:               280847872
    Equivalent to 16 /8s, 189 /16s and 102 /24s
    Percentage of available ARIN address space announced:          69.7

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:                     34743
    Total RIPE prefixes after maximum aggregation:                23558
Prefixes being announced from the RIPE address blocks:            31731
    Unique aggregates announced from the RIPE address blocks:     21300
RIPE Region origin ASes present in the Internet Routing Table:     7496
RIPE Region origin ASes announcing only one prefix:                3925
RIPE Region transit ASes present in the Internet Routing Table:    1234
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          19
Number of RIPE addresses announced to Internet:               228585792
    Equivalent to 13 /8s, 159 /16s and 241 /24s
    Percentage of available RIPE address space announced:          68.1

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:                   10137
    Total LACNIC prefixes after maximum aggregation:               3382
Prefixes being announced from the LACNIC address blocks:           8368
    Unique aggregates announced from the LACNIC address blocks:    4774
LACNIC Region origin ASes present in the Internet Routing Table:    660
LACNIC Region origin ASes announcing only one prefix:               206
LACNIC Region transit ASes present in the Internet Routing Table:   126
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        22
Number of LACNIC addresses announced to Internet:              23276800
    Equivalent to 1 /8s, 99 /16s and 45 /24s
    Percentage of available LACNIC address space announced:        34.7

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:                   1831
    Total AfriNIC prefixes after maximum aggregation:               858
Prefixes being announced from the AfriNIC address blocks:          1192
    Unique aggregates announced from the AfriNIC address blocks:    814
AfriNIC Region origin ASes present in the Internet Routing Table:   144
AfriNIC Region origin ASes announcing only one prefix:               47
AfriNIC Region transit ASes present in the Internet Routing Table:   26
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2898944
    Equivalent to 0 /8s, 44 /16s and 60 /24s
    Percentage of available AfriNIC address space announced:        8.6

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     1015       6469         206   CHINANET-BACKBONE
 9583      841         77          12   Sify Limited
 1221      665       1364         476   Telstra Pty Ltd
 4766      659       3928         289   Korea Telecom (KIX)
 4755      614        256          60   Videsh Sanchar Nigam Ltd. Aut
 7545      515        108          71   TPG Internet Pty Ltd
17676      475       6853          99   Softbank BB Corp.
17488      431         26          11   Hathway IP Over Cable Interne
 9498      430        212          68   BHARTI BT INTERNET LTD.
 9443      399         89          85   Primus Telecommunications
 4802      348         74         159   Wantree Development
 2907      335       1762         312   SINET Japan
 9929      331        217          49   China Netcom Corp.
 7474      325        226         223   SingTel Optus Pty Ltd
17557      308         24         161   Pakistan Telecom
17974      286         69          23   PT TELEKOMUNIKASI INDONESIA
18101      283         68          19   Reliance Infocom Ltd Internet
 4780      282        226          16   Digital United Inc.
 9837      273         78         172   Powertel Ltd
 9800      255        410          67   CHINA UNICOM

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1461       6312         957   AT&T WorldNet Services
 4323     1196        722         235   Time Warner Telecom
  174     1049       5825         967   Cogent Communications
  721     1030      21938         309   DLA Systems Automation Center
  701      973       8118         817   UUNET Technologies, Inc. 
 6197      970        434         506   BellSouth Network Solutions, 
 2386      916        517         689   AT&T Data Communications Serv
18566      887        240           7   Covad Communications 
 1239      847       2803         602   Sprint 
  209      661       3606         526   Qwest 
20115      655        534         337   Charter Communications 
11492      634         89          11   Cable One 
22773      593       1477          29   Cox Communications, Inc.
19262      584       1657         144   Verizon Global Networks 
  852      572       1092         380   Telus Advanced Communications
19916      563         49          54   OLM LLC 
  855      562        243          65   Canadian Research Network 
 3356      523      10618         402   Level 3 Communications, LLC 
 3602      523        127         106   Sprint Canada, Inc. 
 6478      517       1435         284   AT&T Worldnet Services 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      591       1954         469   UUNET - Commercial IP service
 3301      304       1071         290   TeliaNet Sweden
 3320      287       3487         241   Deutsche Telekom AG
 8220      273        474         267   COLT Telecommunications
  680      244       2024         238   DFN-IP service G-WiN
 3246      227        486         220   Song Networks
 8708      224        274         208   Romania Data Systems S.A.
 6746      204         51         175   Dynamic Network Technologies,
 1257      189        712         170   SWIPnet Swedish IP Network
 3269      182       1829          68   TELECOM ITALIA
 5515      180        840         127   Sonera Solution Autonomous Sy
  786      173       1794         173   The JANET IP Service
 5400      167        328         136   BT Ignite European Backbone
 8866      167         37          11   Bulgarian Telecommunication C
24863      166         38           9   LINKdotNET AS number
 3215      162       1326          82   France Telecom Transpac
 6830      162        669          33   UPC Distribution Services
 3300      158        169          92   AUCS Communications Services 
12479      155        322           5   Uni2 Autonomous System
25186      147        211         103   France Telecom Transpac's Tra

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      485        776         211   UniNet S.A. de C.V. 
22047      380        141          43   VTR PUNTO NET S.A. 
16814      295         18           7   NSS, S.A. 
11172      294        106          76   Servicios Alestra S.A de C.V 
14117      184         11           6   Telefonica del Sur S.A. 
13999      175         52           9   Mega Cable S.A. de C.V. 
 7303      153         73          18   Telecom Argentina Stet-France
 6147      150        118          21   Telefonica Del Peru 
11664      138         22          13   Keytech SA 
11556      130         64           3   Cable-Wireless Panama 
19169      128          8          21   Telconet 
10481      121         48           8   Prima S.A. 
 6503      118        148          78   AVANTEL, S.A. 
 5639      112         12           9   Telecommunications Services o
21826      112         14          18   INTERCABLE 
 6505      106         88          79   Global One Communicaoes Ltda 
14522      102         12           8   SatNet S.A. 
11311       99          8          10   Sinectis S.A. 
18822       98          7          10   TELEFONICA MANQUEHUE 
 4270       93         17           9   Red de Interconexion Universi

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      272        812         230   The Internet Solution 
 8452      146         44           7   TEDATA
 5536      122          8          16   Internet Egypt Network
 2018      117        298         103   Tertiary Education Network 
15475      103         84           4   Nile Online
 2905       74        155          67   The Internetworking Company o
 6713       69         71          10   Itissalat Al-MAGHRIB
24835       64         34           6   RAYA Telecom - Egypt
20928       61         16           2   Noor Advanced Technologies AS
 5713       39        167          35   Telkom SA Ltd 
33774       33          4          24   AS Number for Telecom Algeria
15706       31          8           3   Sudatel Internet Exchange Aut
23889       27          7          10   MAURITIUS TELECOM
 8524       23          1           4   AUCEGYPT Autonomous System
21280       23          4           4   Swift Global Kenya Ltd.Is an 
10798       22          1          13   Standard Bank of South Africa
16637       22         10          20   Johnnic e-Ventures 
12455       18          6           5   Jambonet Autonomous system
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      1196         961      Time Warner Telecom
18566       887         880      Covad Communications 
 9583       841         829      Sify Limited
 4134      1015         809      CHINANET-BACKBONE
  721      1030         721      DLA Systems Automation Center
11492       634         623      Cable One 
22773       593         564      Cox Communications, Inc.
 4755       614         554      Videsh Sanchar Nigam Ltd. Aut
19916       563         509      OLM LLC 
  855       562         497      Canadian Research Network 
 5668       498         474      CenturyTel Internet Holdings,
 6197       970         464      BellSouth Network Solutions, 
 7545       515         444      TPG Internet Pty Ltd
19262       584         440      Verizon Global Networks 
17488       431         420      Hathway IP Over Cable Interne
 3602       523         417      Sprint Canada, Inc. 
17676       475         376      Softbank BB Corp.
 4766       659         370      Korea Telecom (KIX)
 9498       430         362      BHARTI BT INTERNET LTD.
 6467       404         358      E.Spire Communications, Inc. 

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

Bad AS  Designation  Network              Transit AS  Description
38976   UNALLOCATED   62.192.224.0/19      21191       SeverTransTeleCom Au
38976   UNALLOCATED   62.192.232.0/24      21166       Satgate autonomous s
38972   UNALLOCATED   80.251.144.0/21       6828       Ekaterinburg Telegra
38972   UNALLOCATED   80.251.151.0/24       6828       Ekaterinburg Telegra
38972   UNALLOCATED   80.251.152.0/23      28947       CJSC InT, Ekaterinbu
29544   UNALLOCATED   82.151.64.0/19       12956       Telefonica Data Auto
24413   UNALLOCATED   202.46.32.0/19       17623       China Netcom Corp.
24408   UNALLOCATED   203.119.26.0/24       9800       CHINA UNICOM
24408   UNALLOCATED   203.119.27.0/24       9800       CHINA UNICOM
24408   UNALLOCATED   203.119.28.0/24       9800       CHINA UNICOM
24406   UNALLOCATED   203.119.29.0/24       4808       CNCGROUP IP network:

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.
192.119.135.0/24       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        /8:19       /9:5       /10:8       /11:20      /12:85      
/13:194     /14:344     /15:668     /16:8638    /17:2925    /18:4950    
/19:11150   /20:12254   /21:10337   /22:13563   /23:14699   /24:96141   
/25:335     /26:247     /27:197     /28:63      /29:27      /30:55      
/31:3       /32:41      

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

  ASN   No of nets  Total ann.   Description
18566      871           887      Covad Communications 
 6197      784           970      BellSouth Network Solutions, 
 7018      720          1461      AT&T WorldNet Services
 9583      661           841      Sify Limited
 2386      637           916      AT&T Data Communications Serv
11492      625           634      Cable One 
 4323      571          1196      Time Warner Telecom
19916      557           563      OLM LLC 
 4766      464           659      Korea Telecom (KIX)
  855      434           562      Canadian Research Network 
 7011      401           466      Citizens Utilities 
 5668      387           498      CenturyTel Internet Holdings,
  702      373           591      UUNET - Commercial IP service
 1239      365           847      Sprint 
 6198      355           497      BellSouth Network Solutions, 
 6517      326           351      Yipes Communications, Inc. 
15270      325           352      PaeTec.net -a division of Pae
22773      307           593      Cox Communications, Inc.
13609      289           332      Choice One Communications Inc
  701      282           973      UUNET Technologies, Inc. 

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

   4:3         8:40       12:1630     13:1        15:11       16:3      
  17:3        18:3        20:42       24:711      25:1        30:2      
  32:67       38:188      40:54       44:3        47:3        52:4      
  55:1        56:3        57:33       58:105      59:107      60:169    
  61:765      62:808      63:1886     64:2923     65:2132     66:2965   
  67:594      68:695      69:1316     70:258      71:39       72:499    
  73:10       80:686      81:598      82:507      83:337      84:324    
  85:394      86:242      87:120     125:142     128:140     129:167    
 130:101     131:305     132:35      133:1       134:151     135:45     
 136:164     137:62      138:178     139:92      140:444     141:139    
 142:403     143:146     144:225     145:39      146:308     147:135    
 148:349     149:189     150:109     151:71      152:115     153:97     
 154:6       155:182     156:90      157:119     158:151     159:176    
 160:87      161:74      162:246     163:175     164:167     165:182    
 166:145     167:236     168:471     169:142     170:312     171:12     
 192:5724    193:3338    194:2452    195:1696    196:719     198:3895   
 199:3274    200:4324    201:490     202:6342    203:6596    204:3821   
 205:2106    206:2404    207:2928    208:2016    209:3439    210:1832   
 211:781     212:1243    213:1384    214:314     215:40      216:3808   
 217:1168    218:227     219:127     220:579     221:335     222:129    


End of report




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