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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Aug 26 14:08:15 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 27 Aug, 2005

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

BGP routing table entries examined:                              168976
    Prefixes after maximum aggregation:                           96929
    Unique aggregates announced to Internet:                      81611
Total ASes present in the Internet Routing Table:                 20370
Origin-only ASes present in the Internet Routing Table:           17728
Origin ASes announcing only one prefix:                            8403
Transit ASes present in the Internet Routing Table:                2642
Transit-only ASes present in the Internet Routing Table:             76
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      26
Prefixes from unregistered ASNs in the Routing Table:                15
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             12
Number of addresses announced to Internet:                   1411870976
    Equivalent to 84 /8s, 39 /16s and 113 /24s
    Percentage of available address space announced:               38.1
    Percentage of allocated address space announced:               57.4
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       80191

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

Prefixes being announced by APNIC Region ASes:                    35039
    Total APNIC prefixes after maximum aggregation:               15773
Prefixes being announced from the APNIC address blocks:           32900
    Unique aggregates announced from the APNIC address blocks:    16471
APNIC Region origin ASes present in the Internet Routing Table:    2342
APNIC Region origin ASes announcing only one prefix:                697
APNIC Region transit ASes present in the Internet Routing Table:    352
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              195514112
    Equivalent to 11 /8s, 167 /16s and 79 /24s
    Percentage of available APNIC address space announced:         72.6

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:                     90319
    Total ARIN prefixes after maximum aggregation:                54941
Prefixes being announced from the ARIN address blocks:            70576
    Unique aggregates announced from the ARIN address blocks:     25937
ARIN Region origin ASes present in the Internet Routing Table:    10165
ARIN Region origin ASes announcing only one prefix:                3755
ARIN Region transit ASes present in the Internet Routing Table:     952
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               262450432
    Equivalent to 15 /8s, 164 /16s and 173 /24s
    Percentage of available ARIN address space announced:          65.2

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:                     32577
    Total RIPE prefixes after maximum aggregation:                22250
Prefixes being announced from the RIPE address blocks:            29615
    Unique aggregates announced from the RIPE address blocks:     19933
RIPE Region origin ASes present in the Internet Routing Table:     7027
RIPE Region origin ASes announcing only one prefix:                3716
RIPE Region transit ASes present in the Internet Routing Table:    1167
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               215275776
    Equivalent to 12 /8s, 212 /16s and 217 /24s
    Percentage of available RIPE address space announced:          64.2

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, 88/6, 188/8, 193/8, 194/7, 212/7
                       and 217/8

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

Prefixes being announced by LACNIC Region ASes:                    9341
    Total LACNIC prefixes after maximum aggregation:               3176
Prefixes being announced from the LACNIC address blocks:           7698
    Unique aggregates announced from the LACNIC address blocks:    4437
LACNIC Region origin ASes present in the Internet Routing Table:    633
LACNIC Region origin ASes announcing only one prefix:               196
LACNIC Region transit ASes present in the Internet Routing Table:   118
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        23
Number of LACNIC addresses announced to Internet:              21781760
    Equivalent to 1 /8s, 76 /16s and 93 /24s
    Percentage of available LACNIC address space announced:        32.5

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:                   1680
    Total AfriNIC prefixes after maximum aggregation:               789
Prefixes being announced from the AfriNIC address blocks:          1014
    Unique aggregates announced from the AfriNIC address blocks:    785
AfriNIC Region origin ASes present in the Internet Routing Table:   133
AfriNIC Region origin ASes announcing only one prefix:               39
AfriNIC Region transit ASes present in the Internet Routing Table:   17
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2636288
    Equivalent to 0 /8s, 40 /16s and 58 /24s
    Percentage of available AfriNIC address space announced:        7.9

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      957       5524         194   CHINANET-BACKBONE
 9583      756         77          14   Sify Limited
 1221      751       1326         521   Telstra Pty Ltd
 4755      697        259          64   Videsh Sanchar Nigam Ltd. Aut
 4766      602       3927         285   Korea Telecom (KIX)
 7545      516        108          72   TPG Internet Pty Ltd
17676      465       6739          99   Softbank BB Corp.
 9443      386         84          79   Primus Telecommunications
 9498      338         99          59   BHARTI BT INTERNET LTD.
 2907      336       1788         313   SINET Japan
 9929      334        224          46   China Netcom Corp.
17557      326         23         154   Pakistan Telecom
 7474      317        257         220   SingTel Optus Pty Ltd
17488      314         18           7   Hathway IP Over Cable Interne
18302      302        110         158   SK Global co., Ltd
 4802      295         53         156   Wantree Development
 9837      277         80         179   Powertel Ltd
17974      264         65          14   PT TELEKOMUNIKASI INDONESIA
  703      258        262         208   UUNET - Commercial IP service
 9800      250        390          64   CHINA UNICOM

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1518       6377         981   AT&T WorldNet Services
 4323     1155        704         221   Time Warner Telecom
  174     1123       5837        1026   Cogent Communications
  721     1091      21906         313   DLA Systems Automation Center
  701     1006       8154         857   UUNET Technologies, Inc. 
 6197      946        503         445   BellSouth Network Solutions, 
 2386      903        528         663   AT&T Data Communications Serv
 1239      861       2847         623   Sprint 
18566      836        225           8   Covad Communications 
20115      641        503         324   Charter Communications 
  209      626       3470         488   Qwest 
 3356      575      10661         445   Level 3 Communications, LLC 
27364      554         44          18   Armstrong Cable Services 
 3602      549        125         106   Sprint Canada, Inc. 
 3561      533       2416         421   Savvis
22773      523       1352          27   Cox Communications, Inc.
 5668      501        115          23   CenturyTel Internet Holdings,
 7132      455       4948         389   SBC Internet Services
19262      450       1370         120   Verizon Global Networks 
 6198      449        416         222   BellSouth Network Solutions, 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      591       1999         482   UUNET - Commercial IP service
 3301      299       1081         285   TeliaNet Sweden
 3320      290       3232         239   Deutsche Telekom AG
 8220      262        474         258   COLT Telecommunications
  680      244       2040         240   DFN-IP service G-WiN
 8708      233        262         214   Romania Data Systems S.A.
 3246      229        469         222   Song Networks
 1257      201        712         175   SWIPnet Swedish IP Network
 5515      181        778         127   Sonera Solution Autonomous Sy
 6746      181         49         157   Dynamic Network Technologies,
 9121      175        282          44   TTnet Autonomous System
  786      174       1794         174   The JANET IP Service
 3269      171       1528          68   TELECOM ITALIA
 5400      167        289         141   BT Ignite European Backbone
 8866      166         20           7   Bulgarian Telecommunication C
 6830      157        669          33   UPC Distribution Services
 3300      156        184          90   AUCS Communications Services 
25186      144        145         101   France Telecom Transpac's Tra
 8551      139        120          20   Bezeq International
 1273      137        174          96   Cable & Wireless Deutschland 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      396        650         169   UniNet S.A. de C.V. 
16814      298         18           7   NSS, S.A. 
11172      242         87          58   Servicios Alestra S.A de C.V 
11664      191         20          23   Keytech SA 
 6147      189        110          21   Telefonica Del Peru 
22047      172        128           7   VTR PUNTO NET S.A. 
14117      152          9           5   Telefonica del Sur S.A. 
 7303      143         68          15   Telecom Argentina Stet-France
19632      143         14           5   Metropolis Intercom S.A. 
11556      131         64           3   Cable-Wireless Panama 
 6505      130         90          87   Global One Communicaoes Ltda 
10481      120         48           8   Prima S.A. 
19169      120          8          26   Telconet 
 6503      114        148          75   AVANTEL, S.A. 
18822      110          7          14   TELEFONICA MANQUEHUE 
13999      108         52           9   Mega Cable S.A. de C.V. 
21826      103         13          15   INTERCABLE 
 5639      102         12           9   Telecommunications Services o
11311       97          8          14   Sinectis S.A. 
23216       96         24          20   RAMtelecom Telecomunicaciones

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      262        685         220   The Internet Solution 
 5536      121          8          14   Internet Egypt Network
 8452      101         32           7   TEDATA
 2018       96        295          87   Tertiary Education Network 
 2905       77        210          69   The Internetworking Company o
15475       77         84           4   Nile Online
24835       58         34           7   RAYA Telecom - Egypt
20928       57         16           2   Noor Advanced Technologies AS
 6713       51         54           8   Itissalat Al-MAGHRIB
 5713       43        149          33   Telkom SA Ltd 
 9129       42          3           3   UUNET Kenya
15706       31          8           3   Sudatel Internet Exchange Aut
12455       30          5           6   Jambonet Autonomous system
 8524       23          1           3   AUCEGYPT Autonomous System
16637       22         10          19   Johnnic e-Ventures 
10798       21          1          12   Standard Bank of South Africa
23889       20          5           9   MAURITIUS TELECOM
12258       17          3          11   Vodacom Internet Company 
15804       17          2           1   AS of The Way Out Internet So
15808       17          2           2   Communication Solutions Ltd i

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

  ASN   No of nets  Net Savings Description
 4323      1155         934      Time Warner Telecom
18566       836         828      Covad Communications 
  721      1091         778      DLA Systems Automation Center
 4134       957         763      CHINANET-BACKBONE
 9583       756         742      Sify Limited
 4755       697         633      Videsh Sanchar Nigam Ltd. Aut
27364       554         536      Armstrong Cable Services 
 6197       946         501      BellSouth Network Solutions, 
22773       523         496      Cox Communications, Inc.
 5668       501         478      CenturyTel Internet Holdings,
 7545       516         444      TPG Internet Pty Ltd
 3602       549         443      Sprint Canada, Inc. 
17676       465         366      Softbank BB Corp.
 6467       423         350      E.Spire Communications, Inc. 
19262       450         330      Verizon Global Networks 
20115       641         317      Charter Communications 
 4766       602         317      Korea Telecom (KIX)
11492       322         315      Cable One 
 9443       386         307      Primus Telecommunications
17488       314         307      Hathway IP Over Cable Interne

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

Bad AS  Designation  Network              Transit AS  Description
64826   PRIVATE       64.200.250.0/23       7911       Williams Communicati
65511   PRIVATE       65.77.145.0/24       16605       Aaro Broadband Wirel
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
64943   PRIVATE       202.41.14.0/24       24110       Security Mail Pty Lt
64942   PRIVATE       202.41.15.0/24       24110       Security Mail Pty Lt
24413   UNALLOCATED   202.46.32.0/19       17623       China Netcom Corp.
65005   PRIVATE       203.200.197.0/24      4755       Videsh Sanchar Nigam
63946   RESERVED      204.222.174.0/23       268       Uniformed Services U

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 
192.84.205.0/24        719     LANLINK autonomous system
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T WorldNet Services
192.172.0.0/19         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        /8:17       /9:3       /10:8       /11:17      /12:76      
/13:171     /14:319     /15:614     /16:8505    /17:2697    /18:4603    
/19:10666   /20:11694   /21:9728    /22:13134   /23:14020   /24:91690   
/25:328     /26:318     /27:176     /28:49      /29:27      /30:80      
/31:1       /32:35      

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

  ASN   No of nets  Total ann.   Description
18566      820           836      Covad Communications 
 6197      769           946      BellSouth Network Solutions, 
 7018      724          1518      AT&T WorldNet Services
 2386      611           903      AT&T Data Communications Serv
 9583      578           756      Sify Limited
 4323      553          1155      Time Warner Telecom
27364      545           554      Armstrong Cable Services 
 4766      419           602      Korea Telecom (KIX)
 5668      405           501      CenturyTel Internet Holdings,
  702      365           591      UUNET - Commercial IP service
19916      363           369      OLM LLC 
 1239      360           861      Sprint 
 7011      345           401      Citizens Utilities 
 6198      323           449      BellSouth Network Solutions, 
11492      314           322      Cable One 
 6517      302           325      Yipes Communications, Inc. 
15270      302           332      PaeTec.net -a division of Pae
18302      287           302      SK Global co., Ltd
  701      282          1006      UUNET Technologies, Inc. 
11456      280           317      Carolina Online, Inc. 

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

   4:7         8:22       11:1        12:1572     13:1        15:9      
  16:2        17:3        18:3        20:22       24:1065     30:3      
  32:61       33:1        38:143      40:56       44:4        47:2      
  52:4        55:2        56:3        57:23       58:154      59:64     
  60:114      61:717      62:722      63:1876     64:2832     65:2066   
  66:2900     67:600      68:579      69:1150     70:171      71:12     
  72:349      80:593      81:541      82:461      83:301      84:225    
  85:286      86:90       87:28      128:153     129:167     130:94     
 131:299     132:37      133:1       134:144     135:42      136:150    
 137:64      138:163     139:61      140:401     141:106     142:144    
 143:135     144:193     145:34      146:289     147:111     148:297    
 149:180     150:107     151:61      152:108     153:89      154:5      
 155:143     156:80      157:99      158:167     159:167     160:87     
 161:72      162:220     163:112     164:188     165:194     166:154    
 167:247     168:439     169:141     170:317     171:8       190:1      
 192:5739    193:3266    194:2401    195:1598    196:651     198:3882   
 199:3288    200:4117    201:279     202:6068    203:6352    204:3801   
 205:2047    206:2455    207:2831    208:2032    209:3325    210:1653   
 211:786     212:1240    213:1335    214:295     215:35      216:3626   
 217:1116    218:217     219:136     220:437     221:248     222:123    


End of report




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