Merit Network
Can't find what you're looking for? Search the Mail Archives.
  About Merit   Services   Network   Resources & Support   Network Research   News   Events   Home

Discussion Communities: Merit Network Email List Archives

North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Sep 23 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 24 Sep, 2005

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

BGP routing table entries examined:                              170925
    Prefixes after maximum aggregation:                           97293
    Unique aggregates announced to Internet:                      82277
Total ASes present in the Internet Routing Table:                 20556
Origin-only ASes present in the Internet Routing Table:           17862
Origin ASes announcing only one prefix:                            8466
Transit ASes present in the Internet Routing Table:                2694
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:                                      28
Prefixes from unregistered ASNs in the Routing Table:                18
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             12
Number of addresses announced to Internet:                   1425779840
    Equivalent to 84 /8s, 251 /16s and 172 /24s
    Percentage of available address space announced:               38.5
    Percentage of allocated address space announced:               57.9
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       81476

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

Prefixes being announced by APNIC Region ASes:                    35531
    Total APNIC prefixes after maximum aggregation:               15562
Prefixes being announced from the APNIC address blocks:           33382
    Unique aggregates announced from the APNIC address blocks:    16415
APNIC Region origin ASes present in the Internet Routing Table:    2364
APNIC Region origin ASes announcing only one prefix:                693
APNIC Region transit ASes present in the Internet Routing Table:    362
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         20
Number of APNIC addresses announced to Internet:              200282112
    Equivalent to 11 /8s, 240 /16s and 16 /24s
    Percentage of available APNIC address space announced:         74.3

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:                     91099
    Total ARIN prefixes after maximum aggregation:                55256
Prefixes being announced from the ARIN address blocks:            71256
    Unique aggregates announced from the ARIN address blocks:     26188
ARIN Region origin ASes present in the Internet Routing Table:    10237
ARIN Region origin ASes announcing only one prefix:                3786
ARIN Region transit ASes present in the Internet Routing Table:     959
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          17
Number of ARIN addresses announced to Internet:               270284800
    Equivalent to 16 /8s, 28 /16s and 56 /24s
    Percentage of available ARIN address space announced:          67.1

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:                     33022
    Total RIPE prefixes after maximum aggregation:                22456
Prefixes being announced from the RIPE address blocks:            30053
    Unique aggregates announced from the RIPE address blocks:     20165
RIPE Region origin ASes present in the Internet Routing Table:     7110
RIPE Region origin ASes announcing only one prefix:                3748
RIPE Region transit ASes present in the Internet Routing Table:    1195
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          28
Number of RIPE addresses announced to Internet:               218480064
    Equivalent to 13 /8s, 5 /16s and 189 /24s
    Percentage of available RIPE address space announced:          65.1

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:                    9532
    Total LACNIC prefixes after maximum aggregation:               3208
Prefixes being announced from the LACNIC address blocks:           7900
    Unique aggregates announced from the LACNIC address blocks:    4609
LACNIC Region origin ASes present in the Internet Routing Table:    638
LACNIC Region origin ASes announcing only one prefix:               197
LACNIC Region transit ASes present in the Internet Routing Table:   124
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC addresses announced to Internet:              22086144
    Equivalent to 1 /8s, 81 /16s and 2 /24s
    Percentage of available LACNIC address space announced:        32.9

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:                   1719
    Total AfriNIC prefixes after maximum aggregation:               811
Prefixes being announced from the AfriNIC address blocks:          1060
    Unique aggregates announced from the AfriNIC address blocks:    804
AfriNIC Region origin ASes present in the Internet Routing Table:   139
AfriNIC Region origin ASes announcing only one prefix:               42
AfriNIC Region transit ASes present in the Internet Routing Table:   19
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2734336
    Equivalent to 0 /8s, 41 /16s and 185 /24s
    Percentage of available AfriNIC address space announced:        8.1

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      984       6080         203   CHINANET-BACKBONE
 9583      798         77          12   Sify Limited
 1221      748       1328         515   Telstra Pty Ltd
 4755      719        259          66   Videsh Sanchar Nigam Ltd. Aut
 4766      611       3927         289   Korea Telecom (KIX)
 7545      514        108          72   TPG Internet Pty Ltd
17676      468       6787         101   Softbank BB Corp.
 9443      386         84          77   Primus Telecommunications
 9498      337        147          58   BHARTI BT INTERNET LTD.
 2907      336       1757         313   SINET Japan
 9929      335        224          46   China Netcom Corp.
17557      328         23         158   Pakistan Telecom
17488      320         19           8   Hathway IP Over Cable Interne
 7474      313        257         216   SingTel Optus Pty Ltd
 4802      311         67         151   Wantree Development
17974      302         66          13   PT TELEKOMUNIKASI INDONESIA
18302      293        109         155   SK Global co., Ltd
 9837      273         79         174   Powertel Ltd
  703      253        263         206   UUNET - Commercial IP service
 9800      249        394          66   CHINA UNICOM

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1512       6360         985   AT&T WorldNet Services
 4323     1175        705         229   Time Warner Telecom
  721     1090      21922         312   DLA Systems Automation Center
  174     1070       5850        1002   Cogent Communications
  701      992       8120         837   UUNET Technologies, Inc. 
 6197      928        398         474   BellSouth Network Solutions, 
 2386      921        513         683   AT&T Data Communications Serv
 1239      863       2851         608   Sprint 
18566      854        240           7   Covad Communications 
20115      649        507         329   Charter Communications 
  209      629       3585         495   Qwest 
 3356      577      10661         444   Level 3 Communications, LLC 
27364      558         44          18   Armstrong Cable Services 
 3602      557        131         110   Sprint Canada, Inc. 
 3561      540       2409         420   Savvis
22773      538       1352          28   Cox Communications, Inc.
 5668      490        115          23   CenturyTel Internet Holdings,
 6198      472        417         228   BellSouth Network Solutions, 
 7132      466       4950         398   SBC Internet Services
19262      461       1395         119   Verizon Global Networks 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      608       1994         480   UUNET - Commercial IP service
 3301      300       1081         286   TeliaNet Sweden
 3320      288       3230         239   Deutsche Telekom AG
 8220      269        475         264   COLT Telecommunications
  680      244       2040         240   DFN-IP service G-WiN
 8708      237        262         217   Romania Data Systems S.A.
 3246      229        476         222   Song Networks
 9121      223        336          25   TTnet Autonomous System
 1257      195        712         173   SWIPnet Swedish IP Network
 5515      185        778         127   Sonera Solution Autonomous Sy
 6746      185         50         161   Dynamic Network Technologies,
 3269      176       1606          69   TELECOM ITALIA
  786      174       1795         174   The JANET IP Service
 5400      169        289         142   BT Ignite European Backbone
 8866      165         37           9   Bulgarian Telecommunication C
 6830      157        669          33   UPC Distribution Services
 3300      155        169          90   AUCS Communications Services 
25186      144        145         101   France Telecom Transpac's Tra
24863      138         37           6   LINKdotNET AS number
 3215      137       1181          79   France Telecom Transpac

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      397        650         169   UniNet S.A. de C.V. 
16814      298         18           7   NSS, S.A. 
11172      248         83          60   Servicios Alestra S.A de C.V 
11664      204         22          24   Keytech SA 
 6147      191        118          21   Telefonica Del Peru 
19632      183         14           5   Metropolis Intercom S.A. 
22047      171        128           7   VTR PUNTO NET S.A. 
14117      156         10           5   Telefonica del Sur S.A. 
 7303      148         70          13   Telecom Argentina Stet-France
11556      132         64           2   Cable-Wireless Panama 
 6505      122         89          86   Global One Communicaoes Ltda 
10481      121         48           8   Prima S.A. 
19169      120          8          28   Telconet 
13999      118         52           9   Mega Cable S.A. de C.V. 
 6503      114        148          75   AVANTEL, S.A. 
18822      111          7          15   TELEFONICA MANQUEHUE 
21826      105         13          16   INTERCABLE 
 5639      103         12           9   Telecommunications Services o
11311       97          8          14   Sinectis S.A. 
23216       96         24          19   RAMtelecom Telecomunicaciones

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      266        708         223   The Internet Solution 
 5536      123          8          12   Internet Egypt Network
 2018       95        295          86   Tertiary Education Network 
15475       83         84           4   Nile Online
 2905       79        211          71   The Internetworking Company o
 8452       79         32           6   TEDATA
20928       61         16           2   Noor Advanced Technologies AS
24835       59         34           7   RAYA Telecom - Egypt
 6713       51         54           8   Itissalat Al-MAGHRIB
 5713       38        149          33   Telkom SA Ltd 
12455       36          6           3   Jambonet Autonomous system
15706       31          8           3   Sudatel Internet Exchange Aut
33774       30          4          20   AS Number for Telecom Algeria
 8524       24          1           4   AUCEGYPT Autonomous System
16637       23         10          20   Johnnic e-Ventures 
23889       23          5           9   MAURITIUS TELECOM
10798       22          1          13   Standard Bank of South Africa
21280       22          4           5   Swift Global Kenya Ltd.Is an 
21491       18         17           2   UTL On-line is RF broadband I
12258       17          3          11   Vodacom Internet Company 

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

  ASN   No of nets  Net Savings Description
 4323      1175         946      Time Warner Telecom
18566       854         847      Covad Communications 
 9583       798         786      Sify Limited
 4134       984         781      CHINANET-BACKBONE
  721      1090         778      DLA Systems Automation Center
 4755       719         653      Videsh Sanchar Nigam Ltd. Aut
27364       558         540      Armstrong Cable Services 
22773       538         510      Cox Communications, Inc.
 5668       490         467      CenturyTel Internet Holdings,
 6197       928         454      BellSouth Network Solutions, 
 3602       557         447      Sprint Canada, Inc. 
 7545       514         442      TPG Internet Pty Ltd
17676       468         367      Softbank BB Corp.
 6467       396         347      E.Spire Communications, Inc. 
19262       461         342      Verizon Global Networks 
11492       337         329      Cable One 
 4766       611         322      Korea Telecom (KIX)
20115       649         320      Charter Communications 
15270       340         312      PaeTec.net -a division of Pae
17488       320         312      Hathway IP Over Cable Interne

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

Bad AS  Designation  Network              Transit AS  Description
65533   PRIVATE       22.22.22.0/24        17841       KRNIC
65506   PRIVATE       64.151.117.0/24      26228       ServePath, LLC 
64826   PRIVATE       64.200.250.0/23       7911       Williams Communicati
65511   PRIVATE       65.77.145.0/24       16605       Aaro Broadband Wirel
65205   PRIVATE       152.163.5.0/24        2056       America Online 
65111   PRIVATE       194.165.131.0/24      8376       GO-JOR Autonomous Sy
65430   PRIVATE       196.44.128.0/19      20459       Telecom Namibia 
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
24413   UNALLOCATED   202.46.32.0/19       17623       China Netcom Corp.
18428   UNALLOCATED   203.91.0.0/24         9505       Taiwan Internet Gate
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
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       /9:5       /10:8       /11:17      /12:81      
/13:177     /14:323     /15:631     /16:8511    /17:2786    /18:4711    
/19:10801   /20:11852   /21:9882    /22:13262   /23:14141   /24:92819   
/25:334     /26:273     /27:189     /28:26      /29:10      /30:54      
/31:0       /32:15      

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

  ASN   No of nets  Total ann.   Description
18566      838           854      Covad Communications 
 6197      763           928      BellSouth Network Solutions, 
 7018      724          1512      AT&T WorldNet Services
 2386      632           921      AT&T Data Communications Serv
 9583      624           798      Sify Limited
 4323      562          1175      Time Warner Telecom
27364      549           558      Armstrong Cable Services 
 4766      427           611      Korea Telecom (KIX)
 5668      398           490      CenturyTel Internet Holdings,
  702      384           608      UUNET - Commercial IP service
 1239      365           863      Sprint 
19916      363           369      OLM LLC 
 7011      362           420      Citizens Utilities 
 6198      345           472      BellSouth Network Solutions, 
11492      329           337      Cable One 
 6517      311           337      Yipes Communications, Inc. 
15270      310           340      PaeTec.net -a division of Pae
  701      286           992      UUNET Technologies, Inc. 
18302      278           293      SK Global co., Ltd
20115      274           649      Charter Communications 

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

   4:5         8:24       12:1595     13:1        15:10       16:2      
  17:3        18:3        20:27       22:1        24:1085     32:65     
  38:157      40:54       44:4        47:2        52:4        55:1      
  56:3        57:23       58:157      59:69       60:124      61:761    
  62:762      63:1896     64:2872     65:2080     66:2928     67:616    
  68:611      69:1222     70:190      71:18       72:386      80:628    
  81:522      82:470      83:304      84:248      85:333      86:119    
  87:16      125:8       128:156     129:167     130:96      131:296    
 132:36      133:1       134:145     135:43      136:149     137:66     
 138:165     139:61      140:429     141:105     142:148     143:141    
 144:218     145:34      146:300     147:119     148:301     149:183    
 150:108     151:72      152:113     153:89      154:5       155:140    
 156:80      157:112     158:164     159:171     160:85      161:74     
 162:232     163:132     164:191     165:186     166:154     167:250    
 168:438     169:142     170:314     171:8       190:1       192:5672   
 193:3309    194:2400    195:1554    196:681     198:3869    199:3242   
 200:4194    201:330     202:6091    203:6418    204:3801    205:2053   
 206:2446    207:2817    208:2040    209:3391    210:1663    211:812    
 212:1183    213:1371    214:302     215:36      216:3719    217:1140   
 218:220     219:137     220:487     221:282     222:130    

End of report




Discussion Communities


About Merit | Services | Network | Resources & Support | Network Research
News | Events | Contact | Site Map | Merit Network Home


Merit Network, Inc.