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Weekly Routing Table Report

  • From: Routing Analysis Role Account
  • Date: Fri May 12 14:07:48 2006

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 May, 2006

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

BGP routing table entries examined:                              187926
    Prefixes after maximum aggregation:                          103847
    Unique aggregates announced to Internet:                      92133
Total ASes present in the Internet Routing Table:                 22144
Origin-only ASes present in the Internet Routing Table:           19260
Origin ASes announcing only one prefix:                            9194
Transit ASes present in the Internet Routing Table:                2884
Transit-only ASes present in the Internet Routing Table:             65
Average AS path length visible in the Internet Routing Table:       3.5
    Max AS path length visible:                                      20
    Max AS path prepend of ASN (34527)                               16
Prefixes from unregistered ASNs in the Routing Table:                 8
    Unregistered ASNs in the Routing Table:                           7
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             10
Number of addresses announced to Internet:                   1537532840
    Equivalent to 91 /8s, 164 /16s and 227 /24s
    Percentage of available address space announced:               41.5
    Percentage of allocated address space announced:               60.0
    Percentage of available address space allocated:               69.1
Total number of prefixes smaller than registry allocations:       92673

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

Prefixes being announced by APNIC Region ASes:                    39467
    Total APNIC prefixes after maximum aggregation:               16505
Prefixes being announced from the APNIC address blocks:           37191
    Unique aggregates announced from the APNIC address blocks:    18298
APNIC Region origin ASes present in the Internet Routing Table:    2551
APNIC Region origin ASes announcing only one prefix:                723
APNIC Region transit ASes present in the Internet Routing Table:    390
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              225571808
    Equivalent to 13 /8s, 113 /16s and 243 /24s
    Percentage of available APNIC address space announced:         70.5

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, 121/8, 122/7, 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:                     97394
    Total ARIN prefixes after maximum aggregation:                57662
Prefixes being announced from the ARIN address blocks:            71480
    Unique aggregates announced from the ARIN address blocks:     26470
ARIN Region origin ASes present in the Internet Routing Table:    10699
ARIN Region origin ASes announcing only one prefix:                4012
ARIN Region transit ASes present in the Internet Routing Table:     989
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          18
Number of ARIN addresses announced to Internet:               292694272
    Equivalent to 17 /8s, 114 /16s and 41 /24s
    Percentage of available ARIN address space announced:          75.9

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, 64/5, 72/6, 76/8, 199/8, 204/6,
                       208/7 and 216/8

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                     37578
    Total RIPE prefixes after maximum aggregation:                25126
Prefixes being announced from the RIPE address blocks:            34591
    Unique aggregates announced from the RIPE address blocks:     23239
RIPE Region origin ASes present in the Internet Routing Table:     7989
RIPE Region origin ASes announcing only one prefix:                4186
RIPE Region transit ASes present in the Internet Routing Table:    1317
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               249447620
    Equivalent to 14 /8s, 222 /16s and 68 /24s
    Percentage of available RIPE address space announced:          78.3

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

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

Prefixes being announced by LACNIC Region ASes:                   11350
    Total LACNIC prefixes after maximum aggregation:               3662
Prefixes being announced from the LACNIC address blocks:           9429
    Unique aggregates announced from the LACNIC address blocks:    5479
LACNIC Region origin ASes present in the Internet Routing Table:    684
LACNIC Region origin ASes announcing only one prefix:               224
LACNIC Region transit ASes present in the Internet Routing Table:   131
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        16
Number of LACNIC addresses announced to Internet:              26940672
    Equivalent to 1 /8s, 155 /16s and 21 /24s
    Percentage of available LACNIC address space announced:        40.1

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:                   2131
    Total AfriNIC prefixes after maximum aggregation:               892
Prefixes being announced from the AfriNIC address blocks:          1469
    Unique aggregates announced from the AfriNIC address blocks:    956
AfriNIC Region origin ASes present in the Internet Routing Table:   156
AfriNIC Region origin ASes announcing only one prefix:               49
AfriNIC Region transit ASes present in the Internet Routing Table:   25
Average AfriNIC Region AS path length visible:                      3.4
    Max AfriNIC Region AS path length visible:                       13
Number of AfriNIC addresses announced to Internet:              4072960
    Equivalent to 0 /8s, 62 /16s and 38 /24s
    Percentage of available AfriNIC address space announced:       12.1

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     1133       7079         216   CHINANET-BACKBONE
 4755      909        259          73   Videsh Sanchar Nigam Ltd. Aut
 9583      900        109          16   Sify Limited
 4766      683       4435         304   Korea Telecom (KIX)
 1221      615       1556         471   Telstra Pty Ltd
 9498      566        211          67   BHARTI BT INTERNET LTD.
 7545      531        124          70   TPG Internet Pty Ltd
17488      501         31           7   Hathway IP Over Cable Interne
17676      487       7029         109   Softbank BB Corp.
 9443      450        110          81   Primus Telecommunications
 4802      384         81         175   Wantree Development
17849      347         22         111   Telecommunications Technology
18101      343         85          23   Reliance Infocom Ltd Internet
 2907      336       1749         312   SINET Japan
17557      329         28         158   Pakistan Telecom
 9929      325        221          58   China Netcom Corp.
17974      310        133          16   PT TELEKOMUNIKASI INDONESIA
 7474      299        211         229   SingTel Optus Pty Ltd
 9800      273        410          67   CHINA UNICOM
 9837      266         78         159   Powertel Ltd

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1516       6228         968   AT&T WorldNet Services
 4323     1292        734         256   Time Warner Telecom
 6197     1007        620         473   BellSouth Network Solutions, 
  721      995      21945         304   DLA Systems Automation Center
  174      957       5787         902   Cogent Communications
19029      950        151         109   New Edge Networks 
18566      939        272           8   Covad Communications 
  701      933       8011         774   UUNET Technologies, Inc. 
 2386      873        521         673   AT&T Data Communications Serv
 1239      847       2805         599   Sprint 
  209      707       3563         555   Qwest 
19262      699       2104         165   Verizon Global Networks 
20115      692        606         373   Charter Communications 
22773      660       1745          45   Cox Communications, Inc.
 7011      634        218         412   Citizens Utilities 
11492      630         86          23   Cable One 
  852      582       1085         384   Telus Advanced Communications
19916      563         49          54   OLM LLC 
  855      542        244          64   Canadian Research Network 
 3602      537        127         109   Sprint Canada, Inc. 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      578       1952         454   UUNET - Commercial IP service
 3301      307       1071         293   TeliaNet Sweden
 3352      296       1628          30   Ibernet, Internet Access Netw
 8220      294        474         267   COLT Telecommunications
 3320      286       3989         240   Deutsche Telekom AG
  680      245       2025         242   DFN-IP service G-WiN
 3246      234        504         224   Song Networks
 6746      230         89         206   Dynamic Network Technologies,
 8708      217        275         200   Romania Data Systems S.A.
24863      209         40           9   LINKdotNET AS number
 8551      202        198          24   Bezeq International
 3215      198       1664          94   France Telecom Transpac
 3269      198       2134          72   TELECOM ITALIA
 1257      192        742         167   SWIPnet Swedish IP Network
 8866      180         37          16   Bulgarian Telecommunication C
 6830      175        765          35   UPC Distribution Services
30890      175         16          63   SC Kappa Invexim SRL
  786      171       1778         171   The JANET IP Service
 5400      170        347         140   BT Ignite European Backbone
 9121      168        931          27   TTnet Autonomous System

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      708       1083         222   UniNet S.A. de C.V. 
22047      417        158          11   VTR PUNTO NET S.A. 
11172      324        110          84   Servicios Alestra S.A de C.V 
16814      318         20           8   NSS, S.A. 
 6147      262        126          22   Telefonica Del Peru 
14117      205         12           6   Telefonica del Sur S.A. 
10481      181         72           8   Prima S.A. 
 7303      164         77          21   Telecom Argentina Stet-France
11556      132         80           4   Cable-Wireless Panama 
21826      132         16          21   INTERCABLE 
 6503      129        149          78   AVANTEL, S.A. 
19169      125          8          27   Telconet 
14259      116         10          12   GTD Internet S.A. 
23216      112         21           9   RAMtelecom Telecomunicaciones
 5639      109         12           9   Telecommunications Services o
 6505      109         88          79   Global One Communicaoes Ltda 
 7910      105          7          10   ANDINET ON LINE 
19429      103         58          44   E.T.B. 
18822       98          7           9   TELEFONICA MANQUEHUE 
14571       97         25           3   Internet Group do Brasil 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      278        803         233   The Internet Solution 
 8452      168         60           7   TEDATA
 6713      145        135          11   Itissalat Al-MAGHRIB
 2018      123        314         104   Tertiary Education Network 
 5536      121          8          18   Internet Egypt Network
24835      117         50           7   RAYA Telecom - Egypt
33783      105          6           2   EEPAD TISP TELECOM & INTERNET
 2905       73        155          66   The Internetworking Company o
20928       57         16           2   Noor Advanced Technologies AS
15475       53         84           4   Nile Online
 5713       39        294          35   Telkom SA Ltd 
15706       31          8           3   Sudatel Internet Exchange Aut
33774       30          7          20   AS Number for Telecom Algeria
12455       28          6           3   Jambonet Autonomous system
23889       26          8          11   MAURITIUS TELECOM
 8524       24          1           4   AUCEGYPT Autonomous System
16637       24         14          22   Johnnic e-Ventures 
10798       22          1          13   Standard Bank of South Africa
 2561       19          6           2   Egyptian Universities Network
21280       19          5           5   Swift Global Kenya Ltd.Is an 

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

  ASN   No of nets  Net Savings Description
 4323      1292        1036      Time Warner Telecom
18566       939         931      Covad Communications 
 4134      1133         917      CHINANET-BACKBONE
 9583       900         884      Sify Limited
19029       950         841      New Edge Networks 
 4755       909         836      Videsh Sanchar Nigam Ltd. Aut
  721       995         691      DLA Systems Automation Center
22773       660         615      Cox Communications, Inc.
11492       630         607      Cable One 
 6197      1007         534      BellSouth Network Solutions, 
19262       699         534      Verizon Global Networks 
19916       563         509      OLM LLC 
 5668       531         508      CenturyTel Internet Holdings,
 9498       566         499      BHARTI BT INTERNET LTD.
17488       501         494      Hathway IP Over Cable Interne
 8151       708         486      UniNet S.A. de C.V. 
  855       542         478      Canadian Research Network 
 7545       531         461      TPG Internet Pty Ltd
 3602       537         428      Sprint Canada, Inc. 
22047       417         406      VTR PUNTO NET S.A. 

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

Bad AS  Designation  Network              Transit AS  Description
65241   PRIVATE       65.90.71.0/24        10794       Bank of America 
65128   PRIVATE       193.110.50.0/24      24652       Juniper Networks, Eu
37890   UNALLOCATED   202.179.160.0/20     17930       Japan Digital Serve 
24409   UNALLOCATED   203.119.29.0/24       9808       Guangdong Mobile Com
65280   PRIVATE       203.197.161.0/24      4755       Videsh Sanchar Nigam
65280   PRIVATE       203.200.14.0/24       4755       Videsh Sanchar Nigam
65280   PRIVATE       203.200.21.0/24       4755       Videsh Sanchar Nigam
36366   UNALLOCATED   216.130.247.0/24       174       Cogent Communication

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
183.206.196.0/24      2188     FR-RENATER-ASTER
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 
192.172.0.0/19         721     DLA Systems Automation Center

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:18       /9:9       /10:9       /11:28      /12:90      
/13:202     /14:361     /15:706     /16:8815    /17:3200    /18:5296    
/19:11633   /20:13071   /21:11325   /22:14552   /23:15646   /24:101883  
/25:387     /26:267     /27:214     /28:64      /29:70      /30:49      
/31:0       /32:31      

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

  ASN   No of nets  Total ann.   Description
18566      922           939      Covad Communications 
19029      881           950      New Edge Networks 
 7018      801          1516      AT&T WorldNet Services
 6197      796          1007      BellSouth Network Solutions, 
 9583      728           900      Sify Limited
 4323      634          1292      Time Warner Telecom
11492      621           630      Cable One 
 2386      597           873      AT&T Data Communications Serv
19916      557           563      OLM LLC 
 7011      543           634      Citizens Utilities 
 4766      493           683      Korea Telecom (KIX)
  855      416           542      Canadian Research Network 
 5668      413           531      CenturyTel Internet Holdings,
15270      394           425      PaeTec.net -a division of Pae
 1239      385           847      Sprint 
  702      359           578      UUNET - Commercial IP service
 6198      357           508      BellSouth Network Solutions, 
 6517      357           387      Yipes Communications, Inc. 
 8151      351           708      UniNet S.A. de C.V. 
17849      347           347      Telecommunications Technology

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

   4:8         8:41       12:1627     13:1        15:12       16:3      
  17:3        18:4        20:43       24:739      25:1        30:2      
  32:59       38:213      40:54       41:1        44:3        47:6      
  52:4        55:1        56:3        57:25       58:149      59:192    
  60:181      61:853      62:762      63:1926     64:3171     65:2254   
  66:3002     67:608      68:657      69:1490     70:328      71:82     
  72:702      73:23       74:34       80:773      81:630      82:602    
  83:391      84:386      85:527      86:393      87:331      88:84     
  89:185     124:273     125:383     128:159     129:187     130:114    
 131:311     132:33      133:8       134:159     135:46      136:178    
 137:75      138:198     139:70      140:468     141:136     142:373    
 143:164     144:227     145:39      146:326     147:136     148:331    
 149:186     150:114     151:85      152:68      153:107     154:6      
 155:198     156:98      157:145     158:161     159:171     160:88     
 161:75      162:261     163:146     164:180     165:213     166:163    
 167:246     168:488     169:128     170:336     171:14      183:1      
 190:72      192:5751    193:3381    194:2613    195:1828    196:845    
 198:3900    199:3229    200:4453    201:934     202:6611    203:6860   
 204:3893    205:2089    206:2401    207:2948    208:2060    209:3788   
 210:1912    211:682     212:1198    213:1468    214:357     215:41     
 216:4147    217:1157    218:272     219:193     220:654     221:358    
 222:147    

End of report




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