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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Jun 03 14:07:48 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 04 Jun, 2005

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

BGP routing table entries examined:                              163814
    Prefixes after maximum aggregation:                           94933
    Unique aggregates announced to Internet:                      78989
Total ASes present in the Internet Routing Table:                 19783
Origin-only ASes present in the Internet Routing Table:           17224
Origin ASes announcing only one prefix:                            8080
Transit ASes present in the Internet Routing Table:                2559
Transit-only ASes present in the Internet Routing Table:             73
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:                18
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             14
Number of addresses announced to Internet:                   1414258528
    Equivalent to 84 /8s, 75 /16s and 223 /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:       77173

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

Prefixes being announced by APNIC Region ASes:                    33699
    Total APNIC prefixes after maximum aggregation:               15728
Prefixes being announced from the APNIC address blocks:           31597
    Unique aggregates announced from the APNIC address blocks:    15795
APNIC Region origin ASes present in the Internet Routing Table:    2284
APNIC Region origin ASes announcing only one prefix:                668
APNIC Region transit ASes present in the Internet Routing Table:    348
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              186078080
    Equivalent to 11 /8s, 23 /16s and 83 /24s
    Percentage of available APNIC address space announced:         69.0

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575
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:                     88409
    Total ARIN prefixes after maximum aggregation:                53883
Prefixes being announced from the ARIN address blocks:            69080
    Unique aggregates announced from the ARIN address blocks:     25401
ARIN Region origin ASes present in the Internet Routing Table:     9978
ARIN Region origin ASes announcing only one prefix:                3655
ARIN Region transit ASes present in the Internet Routing Table:     941
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          18
Number of ARIN addresses announced to Internet:               249193216
    Equivalent to 14 /8s, 218 /16s and 99 /24s
    Percentage of available ARIN address space announced:          70.7

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:                     31152
    Total RIPE prefixes after maximum aggregation:                21491
Prefixes being announced from the RIPE address blocks:            28231
    Unique aggregates announced from the RIPE address blocks:     18967
RIPE Region origin ASes present in the Internet Routing Table:     6708
RIPE Region origin ASes announcing only one prefix:                3530
RIPE Region transit ASes present in the Internet Routing Table:    1103
Average RIPE Region AS path length visible:                         5.2
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               207269312
    Equivalent to 12 /8s, 90 /16s and 173 /24s
    Percentage of available RIPE address space announced:          72.7

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, 88/8, 188/8, 193/8, 194/7, 212/7
                       and 217/8

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                    8871
    Total LACNIC prefixes after maximum aggregation:               3068
Prefixes being announced from the LACNIC address blocks:           7267
    Unique aggregates announced from the LACNIC address blocks:    4207
LACNIC Region origin ASes present in the Internet Routing Table:    620
LACNIC Region origin ASes announcing only one prefix:               192
LACNIC Region transit ASes present in the Internet Routing Table:   118
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC addresses announced to Internet:              19063584
    Equivalent to 1 /8s, 34 /16s and 227 /24s
    Percentage of available LACNIC address space announced:        56.8

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:                   1659
    Total AfriNIC prefixes after maximum aggregation:               763
Prefixes being announced from the AfriNIC address blocks:          1004
    Unique aggregates announced from the AfriNIC address blocks:    777
AfriNIC Region origin ASes present in the Internet Routing Table:   126
AfriNIC Region origin ASes announcing only one prefix:               35
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:              2280192
    Equivalent to 0 /8s, 34 /16s and 203 /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      910       5146         190   CHINANET-BACKBONE
 1221      753       1438         542   Telstra Pty Ltd
 9583      751         55          61   Sify Limited
 4755      608        246         123   Videsh Sanchar Nigam Ltd. Aut
 4766      595       3413         279   Korea Telecom (KIX)
 7545      501         88          72   TPG Internet Pty Ltd
17676      436       6589          75   Softbank BB Corp.
 9443      370         77          76   Primus Telecommunications
 9929      364        221          48   China Netcom Corp.
 2907      338       1805         315   SINET Japan
10036      322         29         290   C&M Communication Co. Ltd.
17557      314         22         151   Pakistan Telecom
 7474      310        271         213   SingTel Optus Pty Ltd
 4808      308        250         169   CNCGROUP IP network: China169
 9498      306         83          61   BHARTI BT INTERNET LTD.
 4802      286         48         163   Wantree Development
17974      265         65          14   PT TELEKOMUNIKASI INDONESIA
18302      264        108         148   SK Global co., Ltd
17488      256         16           7   Hathway IP Over Cable Interne
 2764      254        238         199   AAPT Limited

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1488       6459         967   AT&T WorldNet Services
  174     1196       5611        1025   Cogent Communications
 4323     1123        647         217   Time Warner Telecom
  721     1109      21787         313   DLA Systems Automation Center
  701     1016       8186         855   UUNET Technologies, Inc. 
 6197      918        498         436   BellSouth Network Solutions, 
 1239      890       2869         645   Sprint 
 2386      856        532         636   AT&T Data Communications Serv
18566      814        224           7   Covad Communications 
  209      653       3505         496   Qwest 
20115      615        507         314   Charter Communications 
 3356      572      10842         437   Level 3 Communications, LLC 
27364      564         43          18   Armstrong Cable Services 
 3561      533       2384         419   Savvis
  852      528       1095         390   Telus Advanced Communications
 3602      527        123         101   Sprint Canada, Inc. 
 5668      489        115          25   CenturyTel Internet Holdings,
22773      488       1188          23   Cox Communications, Inc.
 7725      482         60          15   MediaOne 
 6198      465        386         220   BellSouth Network Solutions, 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      594       2001         486   UUNET - Commercial IP service
 3320      304       3232         241   Deutsche Telekom AG
 3301      297       1085         285   TeliaNet Sweden
 8220      273        469         267   COLT Telecommunications
  680      252       2041         238   DFN-IP service G-WiN
 8708      230        254         214   Romania Data Systems S.A.
 3246      228        490         223   Song Networks
 1257      198        712         174   SWIPnet Swedish IP Network
 5515      178        778         128   Sonera Solution Autonomous Sy
  786      176       1794         176   The JANET IP Service
  719      170        340         102   LANLINK autonomous system
 6746      167         47         146   Dynamic Network Technologies,
 3269      166       1496          69   TELECOM ITALIA
 5400      160        285         136   BT Ignite European Backbone
 8866      156         21          11   Bulgarian Telecommunication C
 3300      153        184          86   AUCS Communications Services 
 6830      137        513          27   UPC Distribution Services
25186      135        137          95   France Telecom Transpac's Tra
 1273      131        170          94   Cable & Wireless Deutschland 
 9051      131          8          30   INCONET Autonomous System

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      390        599         152   UniNet S.A. de C.V. 
16814      265         16           7   NSS, S.A. 
11172      221         98          53   Servicios Alestra S.A de C.V 
11664      195         19          22   Keytech SA 
 6147      190        102          20   Telefonica Del Peru 
 7303      149         68          21   Telecom Argentina Stet-France
14117      136          9           5   Telefonica del Sur S.A. 
 6505      133         90          89   Global One Communicaoes Ltda 
22047      131         96           6   VTR PUNTO NET S.A. 
11556      130         64           3   Cable-Wireless Panama 
13999      113         52           9   Mega Cable S.A. de C.V. 
 6503      107        146          73   AVANTEL, S.A. 
19632      107         14           5   Metropolis Intercom S.A. 
18822      106          7          12   TELEFONICA MANQUEHUE 
19169      102          6          17   Telconet 
10481      101         40           7   Prima S.A. 
22927       97         73          25   TELEFONICA DE ARGENTINA 
23216       95         24          23   RAMtelecom Telecomunicaciones
21826       93         12          19   INTERCABLE 
11311       89          8          18   Sinectis S.A. 

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
 2018       91        295          86   Tertiary Education Network 
20928       91         16           2   Noor Advanced Technologies AS
 8452       78         28           6   TEDATA
 2905       74        266          66   The Internetworking Company o
24835       63         34           6   RAYA Telecom - Egypt
 6713       59         54           8   Itissalat Al-MAGHRIB
 9129       40          3           2   UUNET Kenya
12455       38          6           3   Jambonet Autonomous system
 5713       36        142          29   Telkom SA Ltd 
15475       32         84           4   Nile Online
 2609       31         26           3   Tunisia BackBone AS
15706       31          8           3   Sudatel Internet Exchange Aut
 8524       24          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       18          5           6   MAURITIUS TELECOM
 7460       17          3           5   LIA Internet Access 

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

  ASN   No of nets  Net Savings Description
 4323      1123         906      Time Warner Telecom
18566       814         807      Covad Communications 
  721      1109         796      DLA Systems Automation Center
 4134       910         720      CHINANET-BACKBONE
 9583       751         690      Sify Limited
27364       564         546      Armstrong Cable Services 
 4755       608         485      Videsh Sanchar Nigam Ltd. Aut
 6197       918         482      BellSouth Network Solutions, 
 7725       482         467      MediaOne 
22773       488         465      Cox Communications, Inc.
 5668       489         464      CenturyTel Internet Holdings,
 7545       501         429      TPG Internet Pty Ltd
 3602       527         426      Sprint Canada, Inc. 
 6467       424         390      E.Spire Communications, Inc. 
17676       436         361      Softbank BB Corp.
 6140       405         328      ImpSat
 4766       595         316      Korea Telecom (KIX)
 9929       364         316      China Netcom Corp.
20115       615         301      Charter Communications 
 9443       370         294      Primus Telecommunications

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

Bad AS  Designation  Network              Transit AS  Description
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       200.61.48.0/20       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
65024   PRIVATE       213.57.10.0/24       12849       Nonstop Internet Pro

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
192.172.0.0/19         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      /12:72      
/13:158     /14:308     /15:598     /16:8410    /17:2566    /18:4415    
/19:10354   /20:11224   /21:9175    /22:12579   /23:13696   /24:89297   
/25:319     /26:271     /27:140     /28:45      /29:31      /30:78      
/31:0       /32:33      

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

  ASN   No of nets  Total ann.   Description
18566      798           814      Covad Communications 
 6197      749           918      BellSouth Network Solutions, 
 7018      679          1488      AT&T WorldNet Services
 2386      605           856      AT&T Data Communications Serv
 9583      567           751      Sify Limited
27364      555           564      Armstrong Cable Services 
 4323      537          1123      Time Warner Telecom
 7725      453           482      MediaOne 
 4766      412           595      Korea Telecom (KIX)
 5668      403           489      CenturyTel Internet Holdings,
 1239      374           890      Sprint 
  702      366           594      UUNET - Commercial IP service
 6198      340           465      BellSouth Network Solutions, 
10036      322           322      C&M Communication Co. Ltd.
 7011      304           354      Citizens Utilities 
 6467      297           424      E.Spire Communications, Inc. 
 9929      283           364      China Netcom Corp.
 6517      273           295      Yipes Communications, Inc. 
15270      273           293      PaeTec.net -a division of Pae
11456      270           309      Carolina Online, Inc. 

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

   4:3         8:15       12:1551     13:1        15:9        16:2      
  17:3        18:3        20:4        24:1159     30:2        32:69     
  33:4        38:122      40:53       44:3        47:2        52:4      
  55:2        56:3        57:21       58:88       59:41       60:49     
  61:815      62:611      63:1890     64:2752     65:2067     66:2859   
  67:575      68:526      69:1044     70:113      71:8        72:212    
  80:577      81:555      82:408      83:266      84:193      85:246    
  86:19      128:187     129:171     130:85      131:273     132:37     
 133:1       134:150     135:40      136:184     137:69      138:168    
 139:61      140:192     141:101     142:149     143:145     144:183    
 145:33      146:283     147:104     148:302     149:165     150:105    
 151:65      152:107     153:86      154:5       155:143     156:78     
 157:95      158:160     159:171     160:78      161:67      162:205    
 163:86      164:210     165:177     166:159     167:233     168:424    
 169:140     170:310     171:8       172:1       192:5721    193:3181   
 194:2407    195:1547    196:661     198:3934    199:3291    200:3979   
 201:142     202:5670    203:6241    204:3776    205:1998    206:2496   
 207:2808    208:2063    209:3302    210:1702    211:840     212:1205   
 213:1287    214:264     215:31      216:3452    217:1136    218:202    
 219:106     220:377     221:225     222:108    

End of report




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