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 Aug 19 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 20 Aug, 2005

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

BGP routing table entries examined:                              168367
    Prefixes after maximum aggregation:                           96812
    Unique aggregates announced to Internet:                      81588
Total ASes present in the Internet Routing Table:                 20329
Origin-only ASes present in the Internet Routing Table:           17704
Origin ASes announcing only one prefix:                            8371
Transit ASes present in the Internet Routing Table:                2625
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:                16
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             13
Number of addresses announced to Internet:                   1406478101
    Equivalent to 83 /8s, 213 /16s and 39 /24s
    Percentage of available address space announced:               37.9
    Percentage of allocated address space announced:               57.1
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       79815

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

Prefixes being announced by APNIC Region ASes:                    35021
    Total APNIC prefixes after maximum aggregation:               15753
Prefixes being announced from the APNIC address blocks:           32874
    Unique aggregates announced from the APNIC address blocks:    16351
APNIC Region origin ASes present in the Internet Routing Table:    2338
APNIC Region origin ASes announcing only one prefix:                694
APNIC Region transit ASes present in the Internet Routing Table:    353
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              192757888
    Equivalent to 11 /8s, 125 /16s and 64 /24s
    Percentage of available APNIC address space announced:         71.5

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:                     90021
    Total ARIN prefixes after maximum aggregation:                54880
Prefixes being announced from the ARIN address blocks:            70340
    Unique aggregates announced from the ARIN address blocks:     26114
ARIN Region origin ASes present in the Internet Routing Table:    10154
ARIN Region origin ASes announcing only one prefix:                3737
ARIN Region transit ASes present in the Internet Routing Table:     950
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               259664149
    Equivalent to 15 /8s, 122 /16s and 41 /24s
    Percentage of available ARIN address space announced:          64.5

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:                     32420
    Total RIPE prefixes after maximum aggregation:                22222
Prefixes being announced from the RIPE address blocks:            29434
    Unique aggregates announced from the RIPE address blocks:     19897
RIPE Region origin ASes present in the Internet Routing Table:     7006
RIPE Region origin ASes announcing only one prefix:                3705
RIPE Region transit ASes present in the Internet Routing Table:    1155
Average RIPE Region AS path length visible:                         5.2
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               215202432
    Equivalent to 12 /8s, 211 /16s and 186 /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:                    9230
    Total LACNIC prefixes after maximum aggregation:               3169
Prefixes being announced from the LACNIC address blocks:           7587
    Unique aggregates announced from the LACNIC address blocks:    4403
LACNIC Region origin ASes present in the Internet Routing Table:    630
LACNIC Region origin ASes announcing only one prefix:               196
LACNIC Region transit ASes present in the Internet Routing Table:   116
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        23
Number of LACNIC addresses announced to Internet:              21470208
    Equivalent to 1 /8s, 71 /16s and 156 /24s
    Percentage of available LACNIC address space announced:        32.0

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:                   1654
    Total AfriNIC prefixes after maximum aggregation:               788
Prefixes being announced from the AfriNIC address blocks:          1013
    Unique aggregates announced from the AfriNIC address blocks:    781
AfriNIC Region origin ASes present in the Internet Routing Table:   134
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:              2626816
    Equivalent to 0 /8s, 40 /16s and 21 /24s
    Percentage of available AfriNIC address space announced:        7.8

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      956       5524         194   CHINANET-BACKBONE
 1221      757       1327         526   Telstra Pty Ltd
 9583      756         77          14   Sify Limited
 4755      700        259          65   Videsh Sanchar Nigam Ltd. Aut
 4766      597       3414         281   Korea Telecom (KIX)
 7545      498        108          72   TPG Internet Pty Ltd
17676      465       6739          99   Softbank BB Corp.
 9443      382         82          77   Primus Telecommunications
 9498      341         83          61   BHARTI BT INTERNET LTD.
 2907      337       1789         314   SINET Japan
 9929      336        223          47   China Netcom Corp.
17557      323         24         149   Pakistan Telecom
 7474      315        257         218   SingTel Optus Pty Ltd
17488      308         18           8   Hathway IP Over Cable Interne
18302      298        109         155   SK Global co., Ltd
 4802      295         53         157   Wantree Development
 9837      276         79         178   Powertel Ltd
  703      257        262         208   UUNET - Commercial IP service
17974      254         65          14   PT TELEKOMUNIKASI INDONESIA
 9800      250        390          64   CHINA UNICOM

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1517       6392         982   AT&T WorldNet Services
 4323     1149        704         221   Time Warner Telecom
  174     1115       5820        1026   Cogent Communications
  721     1092      21891         315   DLA Systems Automation Center
  701     1002       8154         853   UUNET Technologies, Inc. 
 6197      942        498         450   BellSouth Network Solutions, 
 2386      908        529         668   AT&T Data Communications Serv
 1239      864       2847         626   Sprint 
18566      834        224           7   Covad Communications 
20115      638        500         327   Charter Communications 
  209      627       3470         490   Qwest 
 3356      574      10661         443   Level 3 Communications, LLC 
27364      554         44          18   Armstrong Cable Services 
 3602      550        125         106   Sprint Canada, Inc. 
 3561      532       2416         422   Savvis
22773      523       1352          27   Cox Communications, Inc.
 5668      501        115          23   CenturyTel Internet Holdings,
 6198      472        415         227   BellSouth Network Solutions, 
 7132      454       4947         388   SBC Internet Services
19262      446       1353         119   Verizon Global Networks 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      593       1999         484   UUNET - Commercial IP service
 3301      299       1081         285   TeliaNet Sweden
 3320      291       3232         240   Deutsche Telekom AG
 8220      262        474         258   COLT Telecommunications
  680      245       2041         241   DFN-IP service G-WiN
 3246      230        469         223   Song Networks
 8708      227        261         213   Romania Data Systems S.A.
 1257      198        713         176   SWIPnet Swedish IP Network
 5515      181        778         127   Sonera Solution Autonomous Sy
 6746      180         49         156   Dynamic Network Technologies,
  786      174       1794         174   The JANET IP Service
 3269      169       1518          71   TELECOM ITALIA
 5400      166        289         140   BT Ignite European Backbone
 9121      166        278          42   TTnet Autonomous System
 8866      164         20           7   Bulgarian Telecommunication C
 3300      155        184          89   AUCS Communications Services 
 6830      154        665          32   UPC Distribution Services
25186      144        145         101   France Telecom Transpac's Tra
 8551      138        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      387        600         163   UniNet S.A. de C.V. 
16814      265         16           7   NSS, S.A. 
11172      240         99          57   Servicios Alestra S.A de C.V 
 6147      193        110          21   Telefonica Del Peru 
11664      190         20          23   Keytech SA 
14117      152          9           5   Telefonica del Sur S.A. 
22047      144        128           7   VTR PUNTO NET 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 
19169      120          8          26   Telconet 
 6503      114        147          75   AVANTEL, S.A. 
13999      110         52           9   Mega Cable S.A. de C.V. 
18822      110          7          14   TELEFONICA MANQUEHUE 
21826      103         13          15   INTERCABLE 
 5639      101         12           9   Telecommunications Services o
10481      100         40           7   Prima 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      264        685         222   The Internet Solution 
 5536      122         16          14   Internet Egypt Network
 8452      104         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       41        149          32   Telkom SA Ltd 
15706       31          8           3   Sudatel Internet Exchange Aut
12455       30          5           6   Jambonet Autonomous system
 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 
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      1149         928      Time Warner Telecom
18566       834         827      Covad Communications 
  721      1092         777      DLA Systems Automation Center
 4134       956         762      CHINANET-BACKBONE
 9583       756         742      Sify Limited
 4755       700         635      Videsh Sanchar Nigam Ltd. Aut
27364       554         536      Armstrong Cable Services 
22773       523         496      Cox Communications, Inc.
 6197       942         492      BellSouth Network Solutions, 
 5668       501         478      CenturyTel Internet Holdings,
 3602       550         444      Sprint Canada, Inc. 
 7545       498         426      TPG Internet Pty Ltd
17676       465         366      Softbank BB Corp.
 6467       436         363      E.Spire Communications, Inc. 
19262       446         327      Verizon Global Networks 
 4766       597         316      Korea Telecom (KIX)
20115       638         311      Charter Communications 
11492       316         310      Cable One 
 9443       382         305      Primus Telecommunications
17488       308         300      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
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
24413   UNALLOCATED   202.46.32.0/19       17623       China Netcom Corp.
65005   PRIVATE       203.200.197.0/24      4755       Videsh Sanchar Nigam
65103   PRIVATE       216.53.126.0/23       7270       Net2Phone Corp. 

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
192.145.251.0/24     17860     WEBZEN
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      /12:76      
/13:169     /14:319     /15:604     /16:8488    /17:2683    /18:4569    
/19:10631   /20:11623   /21:9653    /22:13083   /23:13962   /24:91392   
/25:358     /26:330     /27:193     /28:51      /29:28      /30:77      
/31:1       /32:33      

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

  ASN   No of nets  Total ann.   Description
18566      818           834      Covad Communications 
 6197      769           942      BellSouth Network Solutions, 
 7018      722          1517      AT&T WorldNet Services
 2386      615           908      AT&T Data Communications Serv
 9583      573           756      Sify Limited
 4323      548          1149      Time Warner Telecom
27364      545           554      Armstrong Cable Services 
 4766      415           597      Korea Telecom (KIX)
 5668      405           501      CenturyTel Internet Holdings,
  702      366           593      UUNET - Commercial IP service
19916      363           370      OLM LLC 
 1239      359           864      Sprint 
 6198      345           472      BellSouth Network Solutions, 
 7011      335           387      Citizens Utilities 
11492      308           316      Cable One 
 6517      301           323      Yipes Communications, Inc. 
15270      300           324      PaeTec.net -a division of Pae
 6467      290           436      E.Spire Communications, Inc. 
18302      283           298      SK Global co., Ltd
  701      279          1002      UUNET Technologies, Inc. 

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

   4:7         8:23       11:1        12:1569     13:1        15:9      
  16:2        17:3        18:3        20:5        24:961      30:3      
  32:70       33:1        38:141      40:56       44:4        47:2      
  52:4        55:2        56:3        57:23       58:154      59:61     
  60:109      61:723      62:657      63:1891     64:2832     65:2074   
  66:2905     67:584      68:579      69:1139     70:170      71:13     
  72:335      80:595      81:548      82:455      83:296      84:229    
  85:306      86:82       87:27      128:158     129:167     130:90     
 131:300     132:36      133:1       134:143     135:42      136:150    
 137:63      138:163     139:61      140:397     141:104     142:145    
 143:140     144:190     145:33      146:292     147:110     148:294    
 149:180     150:107     151:63      152:108     153:89      154:5      
 155:142     156:76      157:99      158:166     159:167     160:82     
 161:72      162:216     163:111     164:188     165:195     166:153    
 167:246     168:437     169:145     170:317     171:8       190:1      
 192:5743    193:3248    194:2395    195:1579    196:653     198:3880   
 199:3281    200:4121    201:238     202:6027    203:6387    204:3807   
 205:2039    206:2460    207:2830    208:2040    209:3343    210:1657   
 211:752     212:1260    213:1309    214:289     215:35      216:3632   
 217:1110    218:213     219:163     220:434     221:242     222:116    


End of report




Discussion Communities


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


Merit Network, Inc.