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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Jun 10 14:08:06 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 11 Jun, 2005

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

BGP routing table entries examined:                              164762
    Prefixes after maximum aggregation:                           95367
    Unique aggregates announced to Internet:                      79285
Total ASes present in the Internet Routing Table:                 19838
Origin-only ASes present in the Internet Routing Table:           17272
Origin ASes announcing only one prefix:                            8102
Transit ASes present in the Internet Routing Table:                2566
Transit-only ASes present in the Internet Routing Table:             71
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      23
Prefixes from unregistered ASNs in the Routing Table:                19
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             15
Number of addresses announced to Internet:                   1414830208
    Equivalent to 84 /8s, 84 /16s and 152 /24s
    Percentage of available address space announced:               38.2
    Percentage of allocated address space announced:               59.9
    Percentage of available address space allocated:               63.7
Total number of prefixes smaller than registry allocations:       77669

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

Prefixes being announced by APNIC Region ASes:                    34090
    Total APNIC prefixes after maximum aggregation:               15849
Prefixes being announced from the APNIC address blocks:           31999
    Unique aggregates announced from the APNIC address blocks:    15942
APNIC Region origin ASes present in the Internet Routing Table:    2293
APNIC Region origin ASes announcing only one prefix:                673
APNIC Region transit ASes present in the Internet Routing Table:    345
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              186651264
    Equivalent to 11 /8s, 32 /16s and 18 /24s
    Percentage of available APNIC address space announced:         69.3

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:                     88735
    Total ARIN prefixes after maximum aggregation:                54041
Prefixes being announced from the ARIN address blocks:            69253
    Unique aggregates announced from the ARIN address blocks:     25366
ARIN Region origin ASes present in the Internet Routing Table:     9992
ARIN Region origin ASes announcing only one prefix:                3658
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:               249387008
    Equivalent to 14 /8s, 221 /16s and 88 /24s
    Percentage of available ARIN address space announced:          70.8

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, 198/7, 204/6,
                       208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                     31316
    Total RIPE prefixes after maximum aggregation:                21599
Prefixes being announced from the RIPE address blocks:            28381
    Unique aggregates announced from the RIPE address blocks:     19084
RIPE Region origin ASes present in the Internet Routing Table:     6737
RIPE Region origin ASes announcing only one prefix:                3543
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:                          23
Number of RIPE addresses announced to Internet:               208011456
    Equivalent to 12 /8s, 102 /16s and 0 /24s
    Percentage of available RIPE address space announced:          72.9

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:                    8935
    Total LACNIC prefixes after maximum aggregation:               3106
Prefixes being announced from the LACNIC address blocks:           7326
    Unique aggregates announced from the LACNIC address blocks:    4255
LACNIC Region origin ASes present in the Internet Routing Table:    623
LACNIC Region origin ASes announcing only one prefix:               192
LACNIC Region transit ASes present in the Internet Routing Table:   115
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC addresses announced to Internet:              19134496
    Equivalent to 1 /8s, 35 /16s and 248 /24s
    Percentage of available LACNIC address space announced:        57.0

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

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

Prefixes being announced by AfriNIC Region ASes:                   1661
    Total AfriNIC prefixes after maximum aggregation:               772
Prefixes being announced from the AfriNIC address blocks:          1013
    Unique aggregates announced from the AfriNIC address blocks:    779
AfriNIC Region origin ASes present in the Internet Routing Table:   128
AfriNIC Region origin ASes announcing only one prefix:               36
AfriNIC Region transit ASes present in the Internet Routing Table:   17
Average AfriNIC Region AS path length visible:                      4.6
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2289664
    Equivalent to 0 /8s, 34 /16s and 240 /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      913       5150         192   CHINANET-BACKBONE
 9583      755         55          63   Sify Limited
 1221      754       1453         540   Telstra Pty Ltd
 4755      604        246         122   Videsh Sanchar Nigam Ltd. Aut
 4766      595       3412         278   Korea Telecom (KIX)
 7545      501        104          71   TPG Internet Pty Ltd
17676      436       6589          75   Softbank BB Corp.
 9443      374         77          76   Primus Telecommunications
 9929      364        221          48   China Netcom Corp.
10036      340         56         306   C&M Communication Co. Ltd.
 2907      338       1805         315   SINET Japan
 9498      321         83          62   BHARTI BT INTERNET LTD.
17557      317         22         152   Pakistan Telecom
 7474      312        271         216   SingTel Optus Pty Ltd
 4808      310        250         172   CNCGROUP IP network: China169
 4802      279         47         159   Wantree Development
18302      269        108         146   SK Global co., Ltd
17974      264         65          14   PT TELEKOMUNIKASI INDONESIA
  703      253        276         207   UUNET - Commercial IP service
 2764      253        238         199   AAPT Limited

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1497       6460         973   AT&T WorldNet Services
  174     1249       5615        1071   Cogent Communications
 4323     1118        647         217   Time Warner Telecom
  721     1111      21787         313   DLA Systems Automation Center
  701     1018       8171         855   UUNET Technologies, Inc. 
 6197      920        498         438   BellSouth Network Solutions, 
 1239      896       2873         648   Sprint 
 2386      858        533         639   AT&T Data Communications Serv
18566      817        224           7   Covad Communications 
  209      630       3505         496   Qwest 
20115      616        492         311   Charter Communications 
 3356      567      10824         434   Level 3 Communications, LLC 
27364      565         43          18   Armstrong Cable Services 
 3602      543        123         100   Sprint Canada, Inc. 
 3561      533       2384         421   Savvis
  852      526       1094         389   Telus Advanced Communications
22773      490       1188          23   Cox Communications, Inc.
 5668      488        115          25   CenturyTel Internet Holdings,
 7725      484         60          15   MediaOne 
 6198      466        386         221   BellSouth Network Solutions, 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      594       1999         487   UUNET - Commercial IP service
 3320      305       3232         241   Deutsche Telekom AG
 3301      296       1081         284   TeliaNet Sweden
 8220      269        469         265   COLT Telecommunications
  680      252       2041         238   DFN-IP service G-WiN
 8708      232        254         215   Romania Data Systems S.A.
 3246      225        489         220   Song Networks
 1257      198        712         174   SWIPnet Swedish IP Network
 5515      179        778         129   Sonera Solution Autonomous Sy
  786      176       1794         176   The JANET IP Service
  719      168        340         101   LANLINK autonomous system
 6746      168         47         146   Dynamic Network Technologies,
 3269      166       1496          69   TELECOM ITALIA
 5400      163        285         137   BT Ignite European Backbone
 8866      158         21          11   Bulgarian Telecommunication C
 3300      154        184          86   AUCS Communications Services 
 6830      138        529          28   UPC Distribution Services
 3352      131       1240          33   Ibernet, Internet Access Netw
 9051      131          8          33   INCONET Autonomous System
 9121      131        269          41   TTnet Autonomous System

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      380        600         149   UniNet S.A. de C.V. 
16814      264         16          12   NSS, S.A. 
11172      221         98          53   Servicios Alestra S.A de C.V 
 6147      197        110          21   Telefonica Del Peru 
11664      197         19          23   Keytech SA 
14117      152          9           5   Telefonica del Sur S.A. 
 7303      150         69          19   Telecom Argentina Stet-France
 6505      134         90          90   Global One Communicaoes Ltda 
22047      131         96           6   VTR PUNTO NET S.A. 
11556      129         64           2   Cable-Wireless Panama 
13999      113         52           9   Mega Cable S.A. de C.V. 
19632      108         14           5   Metropolis Intercom S.A. 
18822      107          7          13   TELEFONICA MANQUEHUE 
 6503      106        146          72   AVANTEL, S.A. 
19169      105          7          20   Telconet 
10481      101         40           7   Prima S.A. 
22927       97         73          25   TELEFONICA DE ARGENTINA 
21826       95         13          20   INTERCABLE 
23216       95         24          23   RAMtelecom Telecomunicaciones
 5639       94         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       94         16           2   Noor Advanced Technologies AS
 2018       91        295          86   Tertiary Education Network 
 8452       82         28           6   TEDATA
 2905       74        266          66   The Internetworking Company o
24835       64         34           6   RAYA Telecom - Egypt
 6713       59         54           8   Itissalat Al-MAGHRIB
 9129       45          3           3   UUNET Kenya
12455       40          6           3   Jambonet Autonomous system
 5713       36        142          29   Telkom SA Ltd 
15475       32         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 
33765       20          3           8   TANZANIA TELECOMMUNICATIONS C
10798       19          1          11   Standard Bank of South Africa
23889       19          5           8   MAURITIUS TELECOM
21491       18          1           2   UTL On-line is RF broadband I
 7460       17          3           5   LIA Internet Access 

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

  ASN   No of nets  Net Savings Description
 4323      1118         901      Time Warner Telecom
18566       817         810      Covad Communications 
  721      1111         798      DLA Systems Automation Center
 4134       913         721      CHINANET-BACKBONE
 9583       755         692      Sify Limited
27364       565         547      Armstrong Cable Services 
 6197       920         482      BellSouth Network Solutions, 
 4755       604         482      Videsh Sanchar Nigam Ltd. Aut
 7725       484         469      MediaOne 
22773       490         467      Cox Communications, Inc.
 5668       488         463      CenturyTel Internet Holdings,
 3602       543         443      Sprint Canada, Inc. 
 7545       501         430      TPG Internet Pty Ltd
 6467       423         389      E.Spire Communications, Inc. 
17676       436         361      Softbank BB Corp.
 6140       402         322      ImpSat
 4766       595         317      Korea Telecom (KIX)
 9929       364         316      China Netcom Corp.
20115       616         305      Charter Communications 
 9443       374         298      Primus Telecommunications

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

Bad AS  Designation  Network              Transit AS  Description
64512   PRIVATE       61.17.25.0/24         4755       Videsh Sanchar Nigam
65009   PRIVATE       69.39.0.0/20         21803       1st Class Internet S
65050   PRIVATE       168.96.148.0/24       6140       ImpSat
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       200.61.32.0/23       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        /8:19       /9:3       /10:8       /11:15      /12:71      
/13:158     /14:308     /15:604     /16:8425    /17:2573    /18:4422    
/19:10393   /20:11274   /21:9231    /22:12701   /23:13760   /24:89872   
/25:331     /26:270     /27:147     /28:45      /29:29      /30:70      
/31:0       /32:33      

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

  ASN   No of nets  Total ann.   Description
18566      801           817      Covad Communications 
 6197      751           920      BellSouth Network Solutions, 
 7018      689          1497      AT&T WorldNet Services
 2386      608           858      AT&T Data Communications Serv
 9583      572           755      Sify Limited
27364      556           565      Armstrong Cable Services 
 4323      537          1118      Time Warner Telecom
 7725      455           484      MediaOne 
 4766      413           595      Korea Telecom (KIX)
 5668      402           488      CenturyTel Internet Holdings,
 1239      380           896      Sprint 
  702      367           594      UUNET - Commercial IP service
 6198      341           466      BellSouth Network Solutions, 
10036      332           340      C&M Communication Co. Ltd.
 7011      304           354      Citizens Utilities 
 6467      297           423      E.Spire Communications, Inc. 
 9929      283           364      China Netcom Corp.
15270      278           299      PaeTec.net -a division of Pae
 6517      274           296      Yipes Communications, Inc. 
11456      271           310      Carolina Online, Inc. 

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

   4:3         8:15       12:1552     13:1        15:9        16:2      
  17:3        18:3        20:4        24:1166     30:2        32:69     
  33:4        38:126      40:53       44:3        47:2        52:4      
  55:2        56:3        57:24       58:90       59:44       60:55     
  61:809      62:603      63:1891     64:2744     65:2070     66:2877   
  67:581      68:525      69:1032     70:114      71:9        72:223    
  80:586      81:554      82:415      83:268      84:200      85:250    
  86:20      128:191     129:172     130:88      131:296     132:37     
 133:1       134:151     135:40      136:134     137:69      138:167    
 139:61      140:194     141:102     142:148     143:137     144:188    
 145:33      146:287     147:108     148:300     149:172     150:105    
 151:65      152:106     153:86      154:5       155:142     156:78     
 157:99      158:160     159:171     160:76      161:67      162:323    
 163:91      164:210     165:178     166:160     167:235     168:426    
 169:142     170:309     171:8       172:1       192:5720    193:3179   
 194:2418    195:1552    196:662     198:3930    199:3290    200:3988   
 201:156     202:5791    203:6332    204:3770    205:2018    206:2509   
 207:2828    208:2049    209:3315    210:1712    211:856     212:1214   
 213:1320    214:263     215:31      216:3455    217:1148    218:207    
 219:108     220:387     221:228     222:107    

End of report




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