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 05 14:07:54 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 06 Aug, 2005

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

BGP routing table entries examined:                              167801
    Prefixes after maximum aggregation:                           96506
    Unique aggregates announced to Internet:                      81293
Total ASes present in the Internet Routing Table:                 20239
Origin-only ASes present in the Internet Routing Table:           17643
Origin ASes announcing only one prefix:                            8332
Transit ASes present in the Internet Routing Table:                2596
Transit-only ASes present in the Internet Routing Table:             74
Average AS path length visible in the Internet Routing Table:       4.6
    Max AS path length visible:                                      26
Prefixes from unregistered ASNs in the Routing Table:                17
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             14
Number of addresses announced to Internet:                   1400107285
    Equivalent to 83 /8s, 115 /16s and 241 /24s
    Percentage of available address space announced:               37.8
    Percentage of allocated address space announced:               56.9
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       79600

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

Prefixes being announced by APNIC Region ASes:                    34877
    Total APNIC prefixes after maximum aggregation:               15745
Prefixes being announced from the APNIC address blocks:           32719
    Unique aggregates announced from the APNIC address blocks:    16294
APNIC Region origin ASes present in the Internet Routing Table:    2322
APNIC Region origin ASes announcing only one prefix:                683
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:                         17
Number of APNIC addresses announced to Internet:              192605568
    Equivalent to 11 /8s, 122 /16s and 237 /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:                     89702
    Total ARIN prefixes after maximum aggregation:                54700
Prefixes being announced from the ARIN address blocks:            70083
    Unique aggregates announced from the ARIN address blocks:     25956
ARIN Region origin ASes present in the Internet Routing Table:    10139
ARIN Region origin ASes announcing only one prefix:                3751
ARIN Region transit ASes present in the Internet Routing Table:     948
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               255222037
    Equivalent to 15 /8s, 54 /16s and 97 /24s
    Percentage of available ARIN address space announced:          63.4

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:                     32376
    Total RIPE prefixes after maximum aggregation:                22109
Prefixes being announced from the RIPE address blocks:            29392
    Unique aggregates announced from the RIPE address blocks:     19770
RIPE Region origin ASes present in the Internet Routing Table:     6946
RIPE Region origin ASes announcing only one prefix:                3665
RIPE Region transit ASes present in the Internet Routing Table:    1131
Average RIPE Region AS path length visible:                         5.2
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               213666944
    Equivalent to 12 /8s, 188 /16s and 76 /24s
    Percentage of available RIPE address space announced:          63.7

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:                    9172
    Total LACNIC prefixes after maximum aggregation:               3168
Prefixes being announced from the LACNIC address blocks:           7525
    Unique aggregates announced from the LACNIC address blocks:    4493
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:   119
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        23
Number of LACNIC addresses announced to Internet:              20777472
    Equivalent to 1 /8s, 61 /16s and 10 /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:                   1651
    Total AfriNIC prefixes after maximum aggregation:               784
Prefixes being announced from the AfriNIC address blocks:          1006
    Unique aggregates announced from the AfriNIC address blocks:    769
AfriNIC Region origin ASes present in the Internet Routing Table:   133
AfriNIC Region origin ASes announcing only one prefix:               37
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:              2357504
    Equivalent to 0 /8s, 35 /16s and 249 /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      954       5521         192   CHINANET-BACKBONE
 1221      766       1326         527   Telstra Pty Ltd
 9583      753         77          14   Sify Limited
 4755      673        259          65   Videsh Sanchar Nigam Ltd. Aut
 4766      590       3412         278   Korea Telecom (KIX)
 7545      515        108          72   TPG Internet Pty Ltd
17676      463       6707          98   Softbank BB Corp.
 9443      382         82          77   Primus Telecommunications
 9929      344        224          46   China Netcom Corp.
 9498      340         83          61   BHARTI BT INTERNET LTD.
 2907      337       1789         314   SINET Japan
17557      324         23         156   Pakistan Telecom
 7474      316        273         218   SingTel Optus Pty Ltd
 4802      298         53         164   Wantree Development
18302      295        109         158   SK Global co., Ltd
 9837      278         79         181   Powertel Ltd
17488      272         16           8   Hathway IP Over Cable Interne
17974      269         65          14   PT TELEKOMUNIKASI INDONESIA
  703      254        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     1501       6402         968   AT&T WorldNet Services
 4323     1141        688         220   Time Warner Telecom
  174     1118       5825        1034   Cogent Communications
  721     1082      21779         312   DLA Systems Automation Center
  701     1018       8173         863   UUNET Technologies, Inc. 
 6197      940        497         447   BellSouth Network Solutions, 
 2386      893        528         656   AT&T Data Communications Serv
 1239      871       2863         629   Sprint 
18566      833        224           7   Covad Communications 
20115      651        499         322   Charter Communications 
  209      621       3470         489   Qwest 
 3356      584      10697         448   Level 3 Communications, LLC 
27364      554         44          18   Armstrong Cable Services 
 3602      550        125         105   Sprint Canada, Inc. 
 3561      532       2384         420   Savvis
22773      508       1188          23   Cox Communications, Inc.
 5668      501        115          23   CenturyTel Internet Holdings,
 6198      467        396         224   BellSouth Network Solutions, 
  852      457       1093         384   Telus Advanced Communications
 7132      451       4705         386   SBC Internet Services

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      593       1999         483   UUNET - Commercial IP service
 3301      299       1081         285   TeliaNet Sweden
 3320      292       3232         241   Deutsche Telekom AG
 8220      262        472         258   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      196        712         174   SWIPnet Swedish IP Network
 5515      181        778         127   Sonera Solution Autonomous Sy
 5400      177        289         149   BT Ignite European Backbone
 6746      176         49         154   Dynamic Network Technologies,
  786      174       1794         174   The JANET IP Service
 3269      169       1520          72   TELECOM ITALIA
  719      168        340         100   LANLINK autonomous system
 8866      163         20           7   Bulgarian Telecommunication C
 3300      155        184          89   AUCS Communications Services 
 9121      154        274          42   TTnet Autonomous System
 6830      149        665          32   UPC Distribution Services
25186      143        145         100   France Telecom Transpac's Tra
 8551      140        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      240         99          59   Servicios Alestra S.A de C.V 
 6147      192        110          21   Telefonica Del Peru 
11664      181         20          23   Keytech SA 
14117      152          9           5   Telefonica del Sur S.A. 
 7303      144         69          18   Telecom Argentina Stet-France
22047      143        112           7   VTR PUNTO NET S.A. 
19632      142         14           5   Metropolis Intercom S.A. 
11556      131         64           3   Cable-Wireless Panama 
 6505      130         90          87   Global One Communicaoes Ltda 
19169      119          7          25   Telconet 
 6503      115        148          76   AVANTEL, S.A. 
13999      112         52           9   Mega Cable S.A. de C.V. 
18822      110          7          14   TELEFONICA MANQUEHUE 
10481      101         40           7   Prima S.A. 
21826      101         13          18   INTERCABLE 
22927       97         81          26   TELEFONICA DE ARGENTINA 
23216       96         24          21   RAMtelecom Telecomunicaciones
 5639       95         12           9   Telecommunications Services o

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      263        621         221   The Internet Solution 
 5536      120         15          17   Internet Egypt Network
 8452       99         32           8   TEDATA
 2018       96        295          87   Tertiary Education Network 
 2905       76        266          68   The Internetworking Company o
24835       57         34           6   RAYA Telecom - Egypt
20928       56         16           2   Noor Advanced Technologies AS
 6713       51         54           8   Itissalat Al-MAGHRIB
15475       49         84           4   Nile Online
 9129       42          3           3   UUNET Kenya
 5713       39        148          31   Telkom SA Ltd 
12455       36          6           3   Jambonet Autonomous system
15706       31          8           3   Sudatel Internet Exchange Aut
 8524       25          1           4   AUCEGYPT Autonomous System
16637       22         10          19   Johnnic e-Ventures 
23889       20          5           9   MAURITIUS TELECOM
10798       19          1          11   Standard Bank of South Africa
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      1141         921      Time Warner Telecom
18566       833         826      Covad Communications 
  721      1082         770      DLA Systems Automation Center
 4134       954         762      CHINANET-BACKBONE
 9583       753         739      Sify Limited
 4755       673         608      Videsh Sanchar Nigam Ltd. Aut
27364       554         536      Armstrong Cable Services 
 6197       940         493      BellSouth Network Solutions, 
22773       508         485      Cox Communications, Inc.
 5668       501         478      CenturyTel Internet Holdings,
 3602       550         445      Sprint Canada, Inc. 
 7545       515         443      TPG Internet Pty Ltd
17676       463         365      Softbank BB Corp.
 6467       433         360      E.Spire Communications, Inc. 
20115       651         329      Charter Communications 
19262       436         320      Verizon Global Networks 
 4766       590         312      Korea Telecom (KIX)
11492       312         306      Cable One 
 9443       382         305      Primus Telecommunications
 9929       344         298      China Netcom Corp.

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

Bad AS  Designation  Network              Transit AS  Description
64826   PRIVATE       64.200.250.0/23       7911       Williams Communicati
65050   PRIVATE       168.96.148.0/24       6140       ImpSat
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
65142   PRIVATE       200.32.76.0/24        6140       ImpSat
65142   PRIVATE       200.32.77.0/24        6140       ImpSat
64512   PRIVATE       200.61.48.0/20       11664       Keytech SA 
64512   PRIVATE       200.61.58.0/23       11664       Keytech SA 
64512   PRIVATE       200.80.148.0/23      11664       Keytech SA 
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
192.169.0.0/23        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        /8:17       /9:3       /10:8       /11:15      /12:75      
/13:167     /14:317     /15:608     /16:8468    /17:2674    /18:4541    
/19:10566   /20:11570   /21:9593    /22:13026   /23:13915   /24:91182   
/25:373     /26:312     /27:179     /28:50      /29:29      /30:77      
/31:0       /32:36      

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

  ASN   No of nets  Total ann.   Description
18566      817           833      Covad Communications 
 6197      767           940      BellSouth Network Solutions, 
 7018      706          1501      AT&T WorldNet Services
 2386      604           893      AT&T Data Communications Serv
 9583      570           753      Sify Limited
27364      545           554      Armstrong Cable Services 
 4323      541          1141      Time Warner Telecom
 4766      408           590      Korea Telecom (KIX)
 5668      405           501      CenturyTel Internet Holdings,
  702      365           593      UUNET - Commercial IP service
19916      363           370      OLM LLC 
 1239      362           871      Sprint 
 6198      342           467      BellSouth Network Solutions, 
 7011      330           382      Citizens Utilities 
11492      304           312      Cable One 
 6517      296           318      Yipes Communications, Inc. 
15270      296           320      PaeTec.net -a division of Pae
 6467      287           433      E.Spire Communications, Inc. 
20115      283           651      Charter Communications 
18302      280           295      SK Global co., Ltd

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

   4:7         8:23        9:1        12:1557     13:1        15:9      
  16:2        17:3        18:3        20:4        24:967      30:2      
  32:70       33:1        38:139      40:55       44:4        47:2      
  52:4        55:2        56:3        57:23       58:143      59:60     
  60:71       61:727      62:679      63:1887     64:2815     65:2097   
  66:2956     67:574      68:571      69:1138     70:153      71:13     
  72:285      80:598      81:559      82:442      83:294      84:225    
  85:296      86:76       87:24      128:158     129:168     130:88     
 131:293     132:38      133:1       134:145     135:42      136:137    
 137:70      138:165     139:61      140:399     141:104     142:144    
 143:141     144:196     145:34      146:291     147:110     148:291    
 149:177     150:106     151:65      152:108     153:89      154:5      
 155:141     156:77      157:100     158:167     159:168     160:82     
 161:71      162:219     163:95      164:188     165:192     166:153    
 167:241     168:436     169:145     170:328     171:8       172:1      
 190:1       192:5737    193:3239    194:2428    195:1588    196:650    
 198:3871    199:3293    200:4083    201:230     202:5981    203:6389   
 204:3791    205:2039    206:2451    207:2820    208:2044    209:3347   
 210:1638    211:740     212:1255    213:1328    214:273     215:32     
 216:3640    217:1118    218:212     219:179     220:422     221:237    
 222:123    

End of report




Discussion Communities


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


Merit Network, Inc.