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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Aug 12 14:09:40 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 13 Aug, 2005

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

BGP routing table entries examined:                              167995
    Prefixes after maximum aggregation:                           96653
    Unique aggregates announced to Internet:                      81488
Total ASes present in the Internet Routing Table:                 20273
Origin-only ASes present in the Internet Routing Table:           17669
Origin ASes announcing only one prefix:                            8344
Transit ASes present in the Internet Routing Table:                2604
Transit-only ASes present in the Internet Routing Table:             74
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:                23
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             13
Number of addresses announced to Internet:                   1403683221
    Equivalent to 83 /8s, 170 /16s and 129 /24s
    Percentage of available address space announced:               37.9
    Percentage of allocated address space announced:               57.0
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       79603

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

Prefixes being announced by APNIC Region ASes:                    34867
    Total APNIC prefixes after maximum aggregation:               15760
Prefixes being announced from the APNIC address blocks:           32728
    Unique aggregates announced from the APNIC address blocks:    16456
APNIC Region origin ASes present in the Internet Routing Table:    2330
APNIC Region origin ASes announcing only one prefix:                689
APNIC Region transit ASes present in the Internet Routing Table:    345
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              192817280
    Equivalent to 11 /8s, 126 /16s and 40 /24s
    Percentage of available APNIC address space announced:         71.6

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:                     89765
    Total ARIN prefixes after maximum aggregation:                54780
Prefixes being announced from the ARIN address blocks:            70157
    Unique aggregates announced from the ARIN address blocks:     26041
ARIN Region origin ASes present in the Internet Routing Table:    10138
ARIN Region origin ASes announcing only one prefix:                3737
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:                          20
Number of ARIN addresses announced to Internet:               257546005
    Equivalent to 15 /8s, 89 /16s and 215 /24s
    Percentage of available ARIN address space announced:          64.0

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:                     32477
    Total RIPE prefixes after maximum aggregation:                22163
Prefixes being announced from the RIPE address blocks:            29468
    Unique aggregates announced from the RIPE address blocks:     19819
RIPE Region origin ASes present in the Internet Routing Table:     6975
RIPE Region origin ASes announcing only one prefix:                3684
RIPE Region transit ASes present in the Internet Routing Table:    1147
Average RIPE Region AS path length visible:                         5.2
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               214968064
    Equivalent to 12 /8s, 208 /16s and 39 /24s
    Percentage of available RIPE address space announced:          64.1

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
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:                    9205
    Total LACNIC prefixes after maximum aggregation:               3166
Prefixes being announced from the LACNIC address blocks:           7562
    Unique aggregates announced from the LACNIC address blocks:    4381
LACNIC Region origin ASes present in the Internet Routing Table:    631
LACNIC Region origin ASes announcing only one prefix:               196
LACNIC Region transit ASes present in the Internet Routing Table:   117
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        23
Number of LACNIC addresses announced to Internet:              20834560
    Equivalent to 1 /8s, 61 /16s and 233 /24s
    Percentage of available LACNIC address space announced:        31.0

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:                   1652
    Total AfriNIC prefixes after maximum aggregation:               784
Prefixes being announced from the AfriNIC address blocks:          1012
    Unique aggregates announced from the AfriNIC address blocks:    777
AfriNIC Region origin ASes present in the Internet Routing Table:   134
AfriNIC Region origin ASes announcing only one prefix:               38
AfriNIC Region transit ASes present in the Internet Routing Table:   16
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2358272
    Equivalent to 0 /8s, 35 /16s and 252 /24s
    Percentage of available AfriNIC address space announced:        7.0

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
 1221      770       1327         528   Telstra Pty Ltd
 9583      750         77          14   Sify Limited
 4755      682        259          65   Videsh Sanchar Nigam Ltd. Aut
 4766      593       3413         279   Korea Telecom (KIX)
 7545      515        108          72   TPG Internet Pty Ltd
17676      464       6723          99   Softbank BB Corp.
 9443      382         82          77   Primus Telecommunications
 9498      339         83          61   BHARTI BT INTERNET LTD.
 2907      337       1789         314   SINET Japan
 9929      337        224          46   China Netcom Corp.
17557      327         23         153   Pakistan Telecom
 7474      317        273         218   SingTel Optus Pty Ltd
17488      298         17          18   Hathway IP Over Cable Interne
 4802      295         53         159   Wantree Development
18302      290         93         158   SK Global co., Ltd
 9837      277         79         180   Powertel Ltd
17974      271         65          14   PT TELEKOMUNIKASI INDONESIA
  703      255        262         207   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     1510       6404         979   AT&T WorldNet Services
 4323     1144        704         221   Time Warner Telecom
  174     1126       5821        1036   Cogent Communications
  721     1085      21795         314   DLA Systems Automation Center
  701     1008       8155         857   UUNET Technologies, Inc. 
 6197      939        497         449   BellSouth Network Solutions, 
 2386      893        528         656   AT&T Data Communications Serv
 1239      868       2863         627   Sprint 
18566      834        224           7   Covad Communications 
20115      653        502         325   Charter Communications 
  209      617       3470         488   Qwest 
 3356      581      10695         445   Level 3 Communications, LLC 
27364      554         44          18   Armstrong Cable Services 
 3602      550        125         106   Sprint Canada, Inc. 
 3561      533       2385         422   Savvis
22773      514       1349          25   Cox Communications, Inc.
 5668      501        115          23   CenturyTel Internet Holdings,
 6198      468        396         224   BellSouth Network Solutions, 
 7132      452       4947         386   SBC Internet Services
  852      445       1093         384   Telus Advanced Communications

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      291       3232         240   Deutsche Telekom AG
 8220      263        474         259   COLT Telecommunications
  680      245       2041         241   DFN-IP service G-WiN
 3246      230        469         223   Song Networks
 8708      228        262         214   Romania Data Systems S.A.
 1257      197        712         175   SWIPnet Swedish IP Network
 5515      181        778         127   Sonera Solution Autonomous Sy
 6746      179         49         155   Dynamic Network Technologies,
 5400      177        289         149   BT Ignite European Backbone
  786      174       1794         174   The JANET IP Service
  719      169        340         100   LANLINK autonomous system
 3269      169       1518          71   TELECOM ITALIA
 8866      163         20           7   Bulgarian Telecommunication C
 9121      160        276          43   TTnet Autonomous System
 3300      155        184          89   AUCS Communications Services 
 6830      155        665          32   UPC Distribution Services
25186      144        145         101   France Telecom Transpac's Tra
 8551      139        120          20   Bezeq International

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      380        599         160   UniNet S.A. de C.V. 
16814      265         16           7   NSS, S.A. 
11172      242         99          59   Servicios Alestra S.A de C.V 
 6147      192        110          21   Telefonica Del Peru 
11664      185         20          23   Keytech SA 
14117      152          9           5   Telefonica del Sur S.A. 
 7303      145         69          16   Telecom Argentina Stet-France
19632      143         14           5   Metropolis Intercom S.A. 
22047      143        112           7   VTR PUNTO NET S.A. 
11556      131         64           3   Cable-Wireless Panama 
 6505      130         90          87   Global One Communicaoes Ltda 
19169      120          8          26   Telconet 
13999      113         52           9   Mega Cable S.A. de C.V. 
18822      110          7          14   TELEFONICA MANQUEHUE 
21826      102         13          19   INTERCABLE 
 5639      101         12           9   Telecommunications Services o
10481      101         40           7   Prima S.A. 
 6503       98        146          72   AVANTEL, S.A. 
11311       97          8          14   Sinectis S.A. 
23216       95         24          20   RAMtelecom Telecomunicaciones

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      263        621         221   The Internet Solution 
 5536      123         16          14   Internet Egypt Network
 8452      103         32           7   TEDATA
 2018       96        295          87   Tertiary Education Network 
 2905       76        266          68   The Internetworking Company o
20928       57         16           2   Noor Advanced Technologies AS
24835       57         34           6   RAYA Telecom - Egypt
 6713       51         54           8   Itissalat Al-MAGHRIB
15475       47         84           4   Nile Online
 9129       42          3           3   UUNET Kenya
 5713       40        148          31   Telkom SA Ltd 
12455       37          6           3   Jambonet Autonomous system
15706       31          8           3   Sudatel Internet Exchange Aut
 8524       24          1           4   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 
15808       17          2           2   Communication Solutions Ltd i
21491       17          1           1   UTL On-line is RF broadband I

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

  ASN   No of nets  Net Savings Description
 4323      1144         923      Time Warner Telecom
18566       834         827      Covad Communications 
  721      1085         771      DLA Systems Automation Center
 4134       957         763      CHINANET-BACKBONE
 9583       750         736      Sify Limited
 4755       682         617      Videsh Sanchar Nigam Ltd. Aut
27364       554         536      Armstrong Cable Services 
 6197       939         490      BellSouth Network Solutions, 
22773       514         489      Cox Communications, Inc.
 5668       501         478      CenturyTel Internet Holdings,
 3602       550         444      Sprint Canada, Inc. 
 7545       515         443      TPG Internet Pty Ltd
17676       464         365      Softbank BB Corp.
 6467       436         363      E.Spire Communications, Inc. 
20115       653         328      Charter Communications 
19262       443         324      Verizon Global Networks 
 4766       593         314      Korea Telecom (KIX)
11492       315         309      Cable One 
 9443       382         305      Primus Telecommunications
 6140       415         293      ImpSat

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
65511   PRIVATE       65.77.146.0/24       16605       Aaro Broadband Wirel
65511   PRIVATE       65.77.147.0/24       16605       Aaro Broadband Wirel
65511   PRIVATE       65.77.151.0/24       16605       Aaro Broadband Wirel
65021   PRIVATE       128.216.1.0/24         619       Department of Navy 
65021   PRIVATE       128.216.2.0/24         619       Department of Navy 
65021   PRIVATE       128.216.3.0/24         619       Department of Navy 
65021   PRIVATE       128.216.4.0/24         619       Department of Navy 
65050   PRIVATE       168.96.148.0/24       6140       ImpSat
65535   PRIVATE       168.96.250.0/27       3597       Asociacion Civil Cie
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
64943   PRIVATE       202.41.14.0/24       24110       Security Mail Pty Lt
64942   PRIVATE       202.41.15.0/24       24110       Security Mail Pty Lt
65005   PRIVATE       203.200.197.0/24      4755       Videsh Sanchar Nigam

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
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
192.172.0.0/19         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       /11:16      /12:74      
/13:169     /14:319     /15:607     /16:8472    /17:2682    /18:4561    
/19:10588   /20:11590   /21:9648    /22:13037   /23:13916   /24:91250   
/25:353     /26:314     /27:181     /28:50      /29:27      /30:77      
/31:0       /32:36      

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

  ASN   No of nets  Total ann.   Description
18566      818           834      Covad Communications 
 6197      766           939      BellSouth Network Solutions, 
 7018      713          1510      AT&T WorldNet Services
 2386      602           893      AT&T Data Communications Serv
 9583      567           750      Sify Limited
 4323      545          1144      Time Warner Telecom
27364      545           554      Armstrong Cable Services 
 4766      411           593      Korea Telecom (KIX)
 5668      405           501      CenturyTel Internet Holdings,
  702      364           591      UUNET - Commercial IP service
19916      363           370      OLM LLC 
 1239      361           868      Sprint 
 6198      343           468      BellSouth Network Solutions, 
 7011      332           384      Citizens Utilities 
11492      307           315      Cable One 
 6517      299           321      Yipes Communications, Inc. 
15270      298           322      PaeTec.net -a division of Pae
 6467      290           436      E.Spire Communications, Inc. 
20115      283           653      Charter Communications 
11456      276           314      Carolina Online, Inc. 

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

   4:7         8:23       11:1        12:1560     13:1        15:9      
  16:2        17:3        18:3        20:5        24:961      30:2      
  32:70       33:1        38:140      40:56       44:4        47:2      
  52:4        55:2        56:3        57:23       58:149      59:60     
  60:107      61:730      62:685      63:1887     64:2831     65:2075   
  66:2897     67:584      68:572      69:1129     70:158      71:13     
  72:313      80:601      81:556      82:450      83:290      84:229    
  85:295      86:78       87:25      128:153     129:168     130:88     
 131:299     132:38      133:1       134:144     135:42      136:149    
 137:69      138:161     139:61      140:402     141:105     142:144    
 143:140     144:194     145:34      146:292     147:110     148:292    
 149:177     150:107     151:62      152:108     153:89      154:5      
 155:141     156:76      157:99      158:167     159:166     160:82     
 161:72      162:219     163:96      164:189     165:183     166:154    
 167:245     168:436     169:145     170:314     171:8       172:1      
 190:1       192:5749    193:3244    194:2416    195:1584    196:654    
 198:3881    199:3284    200:4106    201:234     202:5983    203:6399   
 204:3787    205:2033    206:2457    207:2832    208:2055    209:3355   
 210:1643    211:745     212:1258    213:1305    214:287     215:35     
 216:3623    217:1113    218:213     219:167     220:422     221:237    
 222:125    

End of report




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