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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Jun 24 14:07:45 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 25 Jun, 2005

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

BGP routing table entries examined:                              165548
    Prefixes after maximum aggregation:                           95759
    Unique aggregates announced to Internet:                      80166
Total ASes present in the Internet Routing Table:                 19940
Origin-only ASes present in the Internet Routing Table:           17366
Origin ASes announcing only one prefix:                            8151
Transit ASes present in the Internet Routing Table:                2574
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:                                      24
Prefixes from unregistered ASNs in the Routing Table:                23
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             15
Number of addresses announced to Internet:                   1402686944
    Equivalent to 83 /8s, 155 /16s and 77 /24s
    Percentage of available address space announced:               37.8
    Percentage of allocated address space announced:               58.2
    Percentage of available address space allocated:               65.1
Total number of prefixes smaller than registry allocations:       78310

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

Prefixes being announced by APNIC Region ASes:                    34367
    Total APNIC prefixes after maximum aggregation:               16000
Prefixes being announced from the APNIC address blocks:           32250
    Unique aggregates announced from the APNIC address blocks:    16352
APNIC Region origin ASes present in the Internet Routing Table:    2297
APNIC Region origin ASes announcing only one prefix:                672
APNIC Region transit ASes present in the Internet Routing Table:    352
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              187035776
    Equivalent to 11 /8s, 37 /16s and 240 /24s
    Percentage of available APNIC address space announced:         69.4

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:                     88880
    Total ARIN prefixes after maximum aggregation:                54148
Prefixes being announced from the ARIN address blocks:            69457
    Unique aggregates announced from the ARIN address blocks:     25547
ARIN Region origin ASes present in the Internet Routing Table:    10026
ARIN Region origin ASes announcing only one prefix:                3677
ARIN Region transit ASes present in the Internet Routing Table:     940
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          18
Number of ARIN addresses announced to Internet:               251011328
    Equivalent to 14 /8s, 246 /16s and 33 /24s
    Percentage of available ARIN address space announced:          62.3

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:                     31616
    Total RIPE prefixes after maximum aggregation:                21716
Prefixes being announced from the RIPE address blocks:            28690
    Unique aggregates announced from the RIPE address blocks:     19252
RIPE Region origin ASes present in the Internet Routing Table:     6795
RIPE Region origin ASes announcing only one prefix:                3574
RIPE Region transit ASes present in the Internet Routing Table:    1115
Average RIPE Region AS path length visible:                         5.2
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               209635648
    Equivalent to 12 /8s, 126 /16s and 201 /24s
    Percentage of available RIPE address space announced:          73.5

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
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:                    8994
    Total LACNIC prefixes after maximum aggregation:               3123
Prefixes being announced from the LACNIC address blocks:           7377
    Unique aggregates announced from the LACNIC address blocks:    4304
LACNIC Region origin ASes present in the Internet Routing Table:    622
LACNIC Region origin ASes announcing only one prefix:               189
LACNIC Region transit ASes present in the Internet Routing Table:   113
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC addresses announced to Internet:              20373792
    Equivalent to 1 /8s, 54 /16s and 225 /24s
    Percentage of available LACNIC address space announced:        30.4

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:                   1662
    Total AfriNIC prefixes after maximum aggregation:               772
Prefixes being announced from the AfriNIC address blocks:          1016
    Unique aggregates announced from the AfriNIC address blocks:    774
AfriNIC Region origin ASes present in the Internet Routing Table:   131
AfriNIC Region origin ASes announcing only one prefix:               39
AfriNIC Region transit ASes present in the Internet Routing Table:   16
Average AfriNIC Region AS path length visible:                      4.6
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2295552
    Equivalent to 0 /8s, 35 /16s and 7 /24s
    Percentage of available AfriNIC address space announced:        6.8

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      918       5150         193   CHINANET-BACKBONE
 9583      758         55          79   Sify Limited
 1221      754       1453         532   Telstra Pty Ltd
 4755      659        248         148   Videsh Sanchar Nigam Ltd. Aut
 4766      595       3413         279   Korea Telecom (KIX)
 7545      501        104          72   TPG Internet Pty Ltd
17676      436       6589          75   Softbank BB Corp.
 9443      375         77          77   Primus Telecommunications
 9929      355        221          48   China Netcom Corp.
 2907      345       1822         320   SINET Japan
10036      345         65         311   C&M Communication Co. Ltd.
 9498      323         83          61   BHARTI BT INTERNET LTD.
17557      319         22         154   Pakistan Telecom
 7474      315        272         218   SingTel Optus Pty Ltd
 4802      282         49         161   Wantree Development
 4808      280        243         158   CNCGROUP IP network: China169
 9837      278         80         182   Powertel Ltd
18302      270        108         151   SK Global co., Ltd
17974      267         65          14   PT TELEKOMUNIKASI INDONESIA
 2764      254        238         199   AAPT Limited

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1485       6460         967   AT&T WorldNet Services
  174     1153       5809        1071   Cogent Communications
 4323     1121        647         217   Time Warner Telecom
  721     1112      21787         313   DLA Systems Automation Center
  701     1013       8168         855   UUNET Technologies, Inc. 
 6197      930        535         432   BellSouth Network Solutions, 
 1239      894       2903         645   Sprint 
 2386      885        526         652   AT&T Data Communications Serv
18566      824        224           7   Covad Communications 
20115      648        497         321   Charter Communications 
  209      630       3507         498   Qwest 
27364      565         43          18   Armstrong Cable Services 
 3356      560      10790         428   Level 3 Communications, LLC 
 3602      543        123         101   Sprint Canada, Inc. 
  852      539       1093         388   Telus Advanced Communications
 3561      539       2385         422   Savvis
22773      495       1188          23   Cox Communications, Inc.
 7725      491         60          15   MediaOne 
 5668      488        115          25   CenturyTel Internet Holdings,
 6198      463        416         218   BellSouth Network Solutions, 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      596       2001         488   UUNET - Commercial IP service
 3320      305       3232         242   Deutsche Telekom AG
 3301      297       1081         284   TeliaNet Sweden
 8220      269        469         264   COLT Telecommunications
  680      244       2041         240   DFN-IP service G-WiN
 8708      231        254         214   Romania Data Systems S.A.
 3246      226        488         221   Song Networks
 1257      199        712         175   SWIPnet Swedish IP Network
 5515      179        778         129   Sonera Solution Autonomous Sy
  786      174       1778         174   The JANET IP Service
 5400      170        285         145   BT Ignite European Backbone
 6746      169         47         147   Dynamic Network Technologies,
 3269      168       1520          72   TELECOM ITALIA
 8866      156         21          11   Bulgarian Telecommunication C
 3300      153        184          86   AUCS Communications Services 
 6830      147        537          31   UPC Distribution Services
 9121      142        272          36   TTnet Autonomous System
25186      139        137          96   France Telecom Transpac's Tra
 3352      137       1272          35   Ibernet, Internet Access Netw
 8551      133        116          20   Bezeq International

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      372        600         161   UniNet S.A. de C.V. 
16814      264         16          12   NSS, S.A. 
11172      219         98          52   Servicios Alestra S.A de C.V 
 6147      197        110          21   Telefonica Del Peru 
11664      196         19          23   Keytech SA 
14117      152          9           5   Telefonica del Sur S.A. 
 7303      149         68          21   Telecom Argentina Stet-France
22047      133        112           7   VTR PUNTO NET S.A. 
 6505      131         90          88   Global One Communicaoes Ltda 
11556      131         64           3   Cable-Wireless Panama 
19169      111          7          22   Telconet 
18822      109          7          14   TELEFONICA MANQUEHUE 
19632      109         14           5   Metropolis Intercom S.A. 
13999      107         52           9   Mega Cable S.A. de C.V. 
10481      101         40           7   Prima S.A. 
 6503      100        146          72   AVANTEL, S.A. 
23216       96         24          23   RAMtelecom Telecomunicaciones
21826       95         13          20   INTERCABLE 
22927       95         73          25   TELEFONICA DE ARGENTINA 
 5639       91         12           9   Telecommunications Services o

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      266        637         223   The Internet Solution 
 5536      119         15          17   Internet Egypt Network
20928       97         16           2   Noor Advanced Technologies AS
 2018       91        295          86   Tertiary Education Network 
 8452       90         28           6   TEDATA
 2905       75        266          67   The Internetworking Company o
 6713       59         54           8   Itissalat Al-MAGHRIB
24835       57         34           6   RAYA Telecom - Egypt
 9129       40          3           3   UUNET Kenya
12455       40          6           3   Jambonet Autonomous system
 5713       36        142          29   Telkom SA Ltd 
15475       34         84           4   Nile Online
15706       31          8           3   Sudatel Internet Exchange Aut
 8524       25          1           4   AUCEGYPT Autonomous System
16637       22         10          19   Johnnic e-Ventures 
10798       19          1          11   Standard Bank of South Africa
23889       19          5           8   MAURITIUS TELECOM
21491       18          1           1   UTL On-line is RF broadband I
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      1121         904      Time Warner Telecom
18566       824         817      Covad Communications 
  721      1112         799      DLA Systems Automation Center
 4134       918         725      CHINANET-BACKBONE
 9583       758         679      Sify Limited
27364       565         547      Armstrong Cable Services 
 4755       659         511      Videsh Sanchar Nigam Ltd. Aut
 6197       930         498      BellSouth Network Solutions, 
 7725       491         476      MediaOne 
22773       495         472      Cox Communications, Inc.
 5668       488         463      CenturyTel Internet Holdings,
 3602       543         442      Sprint Canada, Inc. 
 7545       501         429      TPG Internet Pty Ltd
 6467       427         393      E.Spire Communications, Inc. 
17676       436         361      Softbank BB Corp.
 6140       403         329      ImpSat
20115       648         327      Charter Communications 
 4766       595         316      Korea Telecom (KIX)
 9929       355         307      China Netcom Corp.
19262       408         304      Verizon Global Networks 

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

Bad AS  Designation  Network              Transit AS  Description
65050   PRIVATE       168.96.148.0/24       6140       ImpSat
65507   PRIVATE       200.0.64.0/24        27750       Cooperación Latino A
65004   PRIVATE       200.0.113.0/24       28477       Universidad Autonoma
65004   PRIVATE       200.4.0.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.1.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.2.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.3.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.4.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.5.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.6.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.7.0/24         28477       Universidad Autonoma
64512   PRIVATE       200.59.145.0/24      11664       Keytech SA 
64512   PRIVATE       200.59.146.0/24      11664       Keytech SA 
64512   PRIVATE       200.59.147.0/24      11664       Keytech SA 
64512   PRIVATE       200.59.161.0/24      11664       Keytech SA 
64512   PRIVATE       200.59.162.0/24      11664       Keytech SA 
64512   PRIVATE       200.61.32.0/23       11664       Keytech SA 
64512   PRIVATE       200.61.62.0/23       11664       Keytech SA 
64512   PRIVATE       200.80.154.0/23      11664       Keytech SA 
65005   PRIVATE       203.200.197.0/24      4755       Videsh Sanchar Nigam
65444   PRIVATE       212.25.125.0/24       8551       Bezeq International
65529   PRIVATE       216.21.199.0/24      14697       VDot.Net 
65529   PRIVATE       216.152.237.0/24     14697       VDot.Net 

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
50.160.0.0/13         1221     Telstra Pty Ltd
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
172.32.0.0/24         7011     Citizens Utilities 
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 
192.84.205.0/24        719     LANLINK autonomous system
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T WorldNet Services
192.169.0.0/23        3970     RGnet, Inc. 
192.172.0.0/19         721     DLA Systems Automation Center
192.200.100.0/24      7018     AT&T WorldNet Services

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:18       /9:3       /10:8       /11:15      /12:73      
/13:160     /14:310     /15:591     /16:8432    /17:2600    /18:4450    
/19:10445   /20:11312   /21:9339    /22:12751   /23:13741   /24:90316   
/25:329     /26:307     /27:172     /28:45      /29:29      /30:69      
/31:0       /32:33      

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

  ASN   No of nets  Total ann.   Description
18566      808           824      Covad Communications 
 6197      758           930      BellSouth Network Solutions, 
 7018      687          1485      AT&T WorldNet Services
 2386      600           885      AT&T Data Communications Serv
 9583      576           758      Sify Limited
27364      556           565      Armstrong Cable Services 
 4323      542          1121      Time Warner Telecom
 7725      462           491      MediaOne 
 4766      413           595      Korea Telecom (KIX)
 5668      402           488      CenturyTel Internet Holdings,
 1239      381           894      Sprint 
  702      368           596      UUNET - Commercial IP service
 6198      337           463      BellSouth Network Solutions, 
10036      335           345      C&M Communication Co. Ltd.
 7011      304           354      Citizens Utilities 
 6467      295           427      E.Spire Communications, Inc. 
15270      286           311      PaeTec.net -a division of Pae
20115      280           648      Charter Communications 
 6517      274           296      Yipes Communications, Inc. 
 9929      274           355      China Netcom Corp.

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

   4:4         8:17        9:1        12:1545     13:1        15:9      
  16:2        17:3        18:3        20:4        24:1180     30:2      
  32:69       33:4        38:131      40:53       44:3        47:2      
  52:4        55:2        56:3        57:27       58:101      59:52     
  60:57       61:789      62:624      63:1881     64:2767     65:2091   
  66:2922     67:597      68:541      69:1067     70:120      71:10     
  72:245      80:583      81:571      82:448      83:277      84:209    
  85:265      86:27      128:183     129:174     130:87      131:297    
 132:37      133:1       134:145     135:43      136:135     137:67     
 138:168     139:59      140:263     141:105     142:149     143:144    
 144:194     145:32      146:287     147:109     148:303     149:171    
 150:106     151:65      152:107     153:88      154:4       155:142    
 156:78      157:99      158:160     159:169     160:77      161:69     
 162:208     163:92      164:212     165:178     166:154     167:242    
 168:431     169:139     170:310     171:9       172:1       192:5689   
 193:3197    194:2391    195:1573    196:659     198:3905    199:3305   
 200:4009    201:171     202:5849    203:6386    204:3764    205:2024   
 206:2461    207:2820    208:2086    209:3310    210:1712    211:857    
 212:1230    213:1337    214:264     215:31      216:3447    217:1158   
 218:207     219:133     220:393     221:230     222:112    

End of report




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